U.S. patent application number 09/139777 was filed with the patent office on 2002-07-18 for interactive television program guide system for determining user values for demographic categories.
Invention is credited to ELLIS, MICHAEL D., HASSELL, JOEL G., KNEE, ROBERT A., REYNOLDS, STEVEN J..
Application Number | 20020095676 09/139777 |
Document ID | / |
Family ID | 26773044 |
Filed Date | 2002-07-18 |
United States Patent
Application |
20020095676 |
Kind Code |
A1 |
KNEE, ROBERT A. ; et
al. |
July 18, 2002 |
INTERACTIVE TELEVISION PROGRAM GUIDE SYSTEM FOR DETERMINING USER
VALUES FOR DEMOGRAPHIC CATEGORIES
Abstract
An interactive television program guide system for determining
user input values for demographic categories is provided. The
system includes user television equipment having a receiver for
receiving program guide information for the interactive television
program guide, a user input receiver for receiving user input from
user interface, such as a remote control, a microprocessor which
utilizes the user input received to determine user values for
demographic categories, and memory for storing the user values
determined. In one illustrative use of the system for targeting
advertisements to a user of the interactive television program
guide, the receiver also receives advertisements, where the
advertisements have preselected values for specified demographic
categories. The user television equipment, preferably using
microprocessor, compares the preselected values for the specified
demographic categories associated with the advertisements with
values of corresponding demographic categories stored in memory to
determine which advertisements should be displayed. Those
advertisements determined to be displayable based upon the
comparison are then displayed.
Inventors: |
KNEE, ROBERT A.; (LANSDALE,
PA) ; REYNOLDS, STEVEN J.; (LITTLETON, CO) ;
ELLIS, MICHAEL D.; (BOULDER, CO) ; HASSELL, JOEL
G.; (ARVADA, CO) |
Correspondence
Address: |
DAVID H. HWANG
FISH & NEAVE
1251 AVENUE OF THE AMERICAS
NEW YORK
NY
10020-1104
US
|
Family ID: |
26773044 |
Appl. No.: |
09/139777 |
Filed: |
August 25, 1998 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
60085750 |
May 15, 1998 |
|
|
|
Current U.S.
Class: |
725/46 ;
348/E7.061; 725/32; 725/35; 725/42 |
Current CPC
Class: |
H04N 21/812 20130101;
H04N 21/8106 20130101; H04N 7/163 20130101; H04N 21/454 20130101;
H04N 7/17318 20130101; H04N 21/44222 20130101; H04N 21/25883
20130101; H04N 21/4662 20130101; H04N 21/4532 20130101; H04N 21/235
20130101 |
Class at
Publication: |
725/46 ; 725/42;
725/32; 725/35 |
International
Class: |
H04N 007/025; G06F
013/00; H04N 005/445; H04N 007/10; G06F 003/00 |
Claims
What is claimed is:
1. A system for targeting advertisements to a user of an
interactive television program guide, which comprises: user
television equipment, including: a receiver for receiving
television program guide information and advertisements for said
interactive television program guide, said advertisements having
preselected values for specified demographic categories; a user
input receiver for receiving user input; a microprocessor which
utilizes said user input received to determine user values for
demographic categories; and memory for storing said user values for
the demographic categories; and said user television equipment
comparing said preselected values for specified demographic
categories associated with said advertisements with values of
corresponding demographic categories stored in said memory to
determine which advertisements should be displayed by said
interactive television program guide.
2. The system of claim 1, wherein said memory is non-volatile
memory.
3. The system of claim 1, wherein said user television equipment
further comprises a remote control for transmitting user input for
reception by said user input receiver.
4. The system of claim 1, wherein the comparison of said
preselected values with said values stored in memory is performed
by said microprocessor.
5. A method for targeting advertisements to a user of an
interactive television program guide, which comprises: receiving
advertisements for said interactive television program guide, said
advertisements having preselected values for specified demographic
categories; receiving user input from user interface; determining
user values for demographic categories utilizing said user input;
storing said user values determined for the demographic categories;
comparing said preselected values for specified demographic
categories associated with said advertisements with stored values
of corresponding demographic categories to determine which
advertisements should be displayed by said interactive television
program guide; and displaying the advertisements determined to be
displayable based upon the comparison.
6. The method of claim 5, which further comprises storing
information concerning television channels and programs necessary
for determining values for demographic categories.
7. The method of claim 5, wherein determining user values for
demographic categories further comprises providing to each
television channel and program having a bearing on at least one
demographic category a predetermined value indicative of said
channel or program's indication of how well the user fits said
demographic category.
8. The method of claim 5, wherein determining user values for
demographic categories further comprises providing to said user
input a weight value indicative of the effect said user input has
on the user values for the demographic categories.
9. The method of claim 5, which further comprises providing default
values for the demographic categories.
10. The method of claim 5, wherein determining user values for
demographic categories further comprises providing a period for
each demographic category.
11. The method of claim 5, which further comprises a decay
procedure to refresh user values for the demographic
categories.
12. A method for targeting advertisements to a user of an
interactive television program guide, which comprises: providing
user television equipment for receiving television program guide
information and advertisements for said interactive television
program guide, said advertisements having preselected values for
specified demographic categories; receiving user input; calculating
user values for demographic categories utilizing said user input;
storing said user values calculated; and comparing said preselected
values for specified demographic categories associated with said
advertisements with stored user values of corresponding demographic
categories to determine which advertisements should be
displayed.
13. A system for selectively displaying advertisements to users of
user television equipment on which an interactive television
program guide is implemented, comprising: means for determining
demographic category data for each user individually; means for
storing said demographic category data for each user in said user
television equipment of that user; means for receiving
advertisements and associated demographic category data with said
user television equipment; and means for displaying certain ones of
the advertisements for each user with said interactive television
program guide based on a comparison between said demographic
category data for the user and said demographic category data
associated with said advertisements.
14. A method for selectively displaying advertisements to users of
user television equipment on which an interactive television
program guide is implemented, comprising: determining demographic
category data for each user individually; storing said demographic
category data for each user in said user television equipment of
that user; receiving advertisements and associated demographic
category data with said user television equipment; comparing
between said demographic category data for the user and said
demographic category data associated with said advertisements; and
displaying certain ones of the advertisements for each user with
said interactive television program guide based on the
comparison.
15. An interactive television program guide system for determining
user values for demographic categories, which comprises: user
television equipment, including: a receiver for receiving
television program guide information for said interactive
television program guide; a user input receiver for receiving user
input; a microprocessor which utilizes said user input received to
determine user values for demographic categories; and memory for
storing said user values for the demographic categories.
16. The system of claim 15, wherein said memory is non-volatile
memory.
17. The system of claim 15, wherein said user television equipment
further comprises a remote control for transmitting user input for
reception by said user input receiver.
Description
[0001] This application claims the benefit of U.S. provisional
application No. 60/085,750, filed May 15, 1998.
BACKGROUND OF THE INVENTION
[0002] This invention relates to interactive television program
guides, and more particularly, to an interactive television program
guide system for determining user values for demographic categories
such that the determined values can be utilized for specified uses,
such as for targeting advertisements.
[0003] Cable, satellite, and broadcast television systems provide
viewers with a large number of television channels. Viewers have
traditionally consulted printed television program schedules to
determine the programs being broadcast at a particular time. More
recently, interactive electronic television program guides have
been developed that allow television program information to be
displayed on a viewer's television.
[0004] Interactive program guides are typically implemented on
set-top boxes. Such program guides allow users to view television
program listings in different display formats. For example, a user
may instruct the program guide to display a grid of program
listings organized in a channel-ordered or a time-ordered list.
Users may also search and sort program listings by theme (e.g.,
movies, sports, etc.) or by title (i.e., alphabetically). A user
may obtain additional information for a program by placing a
highlight region on a desired program listing and pressing an
"info" button. The user may purchase a pay program from the program
guide by placing the highlight region on a program listing and
pressing an "OK" button. Some systems allow the user to select a
program for recording by placing the highlight region on a program
listing and pressing a "record" button.
[0005] The user's interactions with the program guide are
indicative of the user's interests. For example, if the user
purchases a pay-per-view movie, making that purchase shows that the
user is interested in movies of that type. Searching for program
listings in the category "sports" indicates that the user is
interested in sports. Although the user's interactions with the
program guide indicate the user's interests, previously known
program guide systems did not monitor or use this information.
[0006] In commonly-assigned co-pending U.S. patent application No.
09/034,939, filed Mar. 4, 1998, which is incorporated herein by
reference in its entirety, there is described a program guide
system for determining a user's interests by monitoring the user's
interactions with the program guide. The '939 application also
describes utilizing the user's interests to present advertisements
or to take actions in the program guide.
[0007] It would be desirable to be able to provide a systematic
approach for categorizing user information into demographic
categories that could then be used for specified purposes, such as
for targeting advertisements or taking certain actions in the
program guide. As used throughout in the present application,
"demographic categories" means categories of user information, such
as income, age, hobbies, etc., which serve as a basis for
identification and selection. Advantages that would be offered by
such a systematic approach include greater effectiveness and less
cost in achieving a specified purpose. For example, to target
advertisements, the use of demographic categories means more
effective targeting of advertisements and consequently lower costs.
Advertisers could select demographic categories to ensure that the
advertisements target only those users who would most likely be
interested in the products or services they offer.
[0008] It is therefore an object of the present invention to
provide a program guide system which categorizes information
obtained from a user's interaction with the program guide into
demographic categories. Another object of the invention is to
determine user values for the demographic categories. Still another
object of the invention is to provide an interactive television
program guide system which determines user values for the
demographic categories such that advertisers can select specific
demographic categories of significance to ensure that the products
or services they offer will be targeted to those users who will
most likely be interested in purchasing the products or
services.
SUMMARY OF THE INVENTION
[0009] This and other objects of the invention are accomplished in
accordance with the principles of the present invention by an
interactive television program guide system for determining user
input values for demographic categories. The system includes user
television equipment having a receiver for receiving program guide
information for the interactive television program guide, a user
input receiver for receiving user input from user interface, such
as a remote control, a microprocessor which utilizes the user input
received to determine user values for demographic categories, and
memory for storing the user values determined.
[0010] In one illustrative use of the system for targeting
advertisements to a user of the interactive television program
guide, the receiver also receives advertisements, where the
advertisements have preselected values for specified demographic
categories. The user television equipment, preferably using
microprocessor, compares the preselected values for the specified
demographic categories associated with the advertisements with
values of corresponding demographic categories stored in memory to
determine which advertisements should be displayed. Those
advertisements determined to be displayable based upon the
comparison are then displayed.
[0011] Further features of the invention, its nature and various
advantages will be more apparent from the accompanying drawings and
the following detailed description of the preferred
embodiments.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012] FIG. 1 is a diagram of an illustrative system for targeting
advertisements to a user of an interactive television program guide
in accordance with the present invention.
[0013] FIG. 2 is a list of ten exemplary demographic categories and
their values, as well as preselected values for two advertisements
received by the user television equipment of FIG. 1 in accordance
with the present invention.
[0014] FIG. 3 is a table showing four exemplary user inputs and
their predetermined weight values to be utilized by the user
television equipment of FIG. 1 to determine values for demographic
categories in accordance with the present invention.
[0015] FIG. 4 is a table showing exemplary demographic categories
and preselected value and weight factor for each of the channels to
be utilized by the user television equipment of FIG. 1 to determine
values for demographic categories in accordance with the present
invention.
[0016] FIG. 5 is a flowchart showing steps involved in displaying
advertisements based on demographic information in accordance with
the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0017] An illustrative program guide system 30 for use in targeting
advertisements to specified users in accordance with the present
invention is shown in FIG. 1. Although the specified purpose for
which user demographic information is to be utilized is
illustratively shown to be for targeting advertisements, it will be
apparent to one skilled in the art that user demographic
information may also be used for other specified purposes.
[0018] A main facility 32 includes a program guide database 34 for
storing program guide information, such as television program guide
listings data, pay-per-view ordering information, television
program promotional information, etc. The main facility 32 also
includes an advertising database 36 for storing advertising
information. Information from databases 34 and 36 may be
transmitted to a television distribution facility 38 via
communications link 40. There are typically numerous television
distribution facilities 38 to which information from main facility
32 is transmitted in parallel, although only one such television
distribution facility 38 is shown in FIG. 1 to avoid
over-complicating the drawings. Link 40 may be a satellite link, a
telephone network link, a cable or fiber optic link, a microwave
link, a combination of such links, or any other suitable
communications path. If it is desired to transmit video signals
(e.g., for advertising and promotional videos) over link 40 in
addition to data signals, a relatively high bandwidth link such as
a satellite link is generally preferable to a relatively low
bandwidth link such as a telephone line.
[0019] The television distribution facility 38 is a facility for
distributing television signals to users, such as a cable system
headend, a broadcast distribution facility, or a satellite
television distribution facility.
[0020] The program guide information transmitted by the main
facility 32 to the television distribution facility 38 includes
television program listings data, such as program times, channels,
titles, descriptions, etc. Transmitted program information also
includes pay program data, such as pricing information for
individual programs and subscription channels, time windows for
ordering programs and channels, telephone numbers for placing
orders that cannot be impulse ordered, etc. The advertising
information transmitted by the main facility 32 to the television
distribution facility 38 includes text, graphics, video and/or
other (e.g. audio) advertisements for various products and
services. As will be described in greater detail later, the
advertising information may also include preselected values for
demographic categories associated with each advertisement.
[0021] If desired, some of the program guide and advertising
information may be provided using data sources at facilities other
than then main facility 32. For example, data related to pay
program order processing (e.g., billing data and the like) may be
generated by an order processing and billing system that is
separate from the main facility 32 and separate from the television
distribution facility 38. Similarly, advertising information may be
generated by an advertising facility that is separate from the main
facility 32 and the television distribution facility 38.
[0022] Regardless of its source, advertising information may be
maintained on a server 42 within the television distribution
facility 38, if desired. Server 42 may be capable of handling text,
graphics, and video.
[0023] Television distribution facility 38 distributes program
guide and advertising information to user television equipment 44
via communications paths 46. User television equipment may include
a set-top box or may be an advanced television receiver or personal
computer television (PC/TV), if desired. Each communications path
46 may be a satellite link, a telephone network link, a cable or
fiber optic link, a microwave link, a combination of such links, or
any other suitable communications path. Program guide data may be
distributed over an out-of-band channel on path 46, an in-band
digital channel, or any other suitable technique. Advertising
information may be distributed using any of a number of suitable
techniques. For example, text and graphics advertisements may be
distributed over an out-of-band channel using an out-of-band
modulator. Video advertisements may also be distributed in this
manner, although large quantities of video information may be more
efficiently distributed using one or more digital channels on path
46. Such digital channels may also be used for distributing text
and graphics.
[0024] Each user has a receiver unit, which is typically a set-top
box 48, but which may be other suitable television equipment into
which set-top box functionality as will be described herein has
been integrated. Program guide data is distributed to the set-top
boxes 48 periodically. The television distribution facility 38 may
also poll the set-top boxes 48 periodically for certain information
(e.g., pay program account information or information regarding
programs that have been purchased and viewed using
locally-generated authorization techniques).
[0025] Each set-top box 48 is typically connected to an optional
videocassette recorder 50 so that selected television programs may
be recorded. The videocassette recorder 50 is connected to a
television 52. To record a program, the set-top box 48 tunes to a
particular channel and sends control signals to the videocassette
recorder 50 (e.g., using an infrared transmitter) that directs the
videocassette recorder 50 to start and stop recording at
appropriate times.
[0026] An interactive television program guide is implemented on
user television equipment 44 (e.g., on set-top box 48). During use
of the interactive television program guide implemented on the
set-top box 48, television program listings may be displayed on the
television 52. Each set-top box 48, videocassette recorder 50, and
television 52 may be controlled by one or more remote controls 54
or any other suitable user input interface, such as a wireless
keyboard, mouse, trackball, dedicated set of buttons, etc.
[0027] The set-top box 48 includes a microprocessor 60, a user
input receiver 62, and memory 64. Other components of the set-top
box which are needed for implementing a program guide are not
specifically described herein since they are not part of the
present invention. The user input receiver 62 receives user input
from remote control 54 or other user input interfaces. For example,
if user input is to be transmitted by an infrared remote control
signal, then the user input receiver would be an infrared signal
receiver. As will be described in greater detail later, the
microprocessor 60 utilizes the user input signals received by the
user input receiver 62 to calculate values for different
demographic categories.
[0028] The microprocessor 60 also compares the values of the
relevant demographic categories for the user stored in memory 64
with the preselected values associated with each advertisement
received by the set-top box 48 to determine whether the
advertisement is to be displayed on the television 52. Memory 64,
which is preferably non-volatile memory, stores values of the
demographic categories for the user. Memory 64 may also store
information necessary to calculate the values of the demographic
categories for the user. For example, memory 64 may store
information such as the likelihood that a viewer watching the ESPN
channel is a fan of sports. Such information may also be stored in
another memory electrically coupled to the microprocessor 60.
[0029] FIG. 2 is a sample list of the demographic categories and
the values of the demographic categories for the user stored in
memory 64. FIG. 2 also shows the preselected values for two
advertisements received by the set-top box 48. Under the
demographic categories heading, there are shown ten exemplary
predefined demographic categories. These categories are: (1) sports
fan, (2) science fiction fan, (3) parent, (4) dog-lover, (5)
cat-lover, (6) annual income over $20,000, (7) annual income over
$30,000, (8) annual income over $50,000, (9) female age range of
20-35, and (10) male age range of 18-40.
[0030] The value for each of the demographic categories is from 0
to 1. Zero indicates that the user does not fit the demographic
category (or the probability that the user fits the category is
zero). One indicates that the user fully fits the demographic
category (or the probability that the user fits the category is
one). Any value between 0 and 1 indicates that the user partially
fits the demographic category, with a higher number indicating a
correspondingly better fit. The selection of this range is not
significant and any other range (e.g., 1-10) or representation of
the demographic information (e.g., codes, tags, characters or the
like) may be used to carry out the objects of the present
invention. The determination of the values for the demographic
categories will be described later.
[0031] For the exemplary user of FIG. 2, the values for the
demographic categories indicates that the user is a male in the age
group of 18-40, his annual income is over $20,000 but not over
$30,000, he is an unmitigated sports fan, and he is a greater
cat-lover (0.7 value) than a dog-lover (0.5 value).
[0032] Advertisement #1, which for purposes of illustration only
will be assumed to be for a sports utility vehicle, has preselected
values of at least 0.5 for the sports fan demographic category and
1 for the annual income over $30,000 demographic category. Note
that FIG. 2 is not necessarily indicative of what a real advertiser
of sports utility vehicles would select in terms of values or even
demographic categories, but is suitable for purposes of
illustration. The 0.5 preselected value for the sports fan category
means that the advertiser desires to target advertisement #1 to
someone who is at least moderately interested in sports. In
addition, the advertiser desires to target someone who is at least
making $30,000 a year. Since the user in the example of FIG. 2 does
not fit the income category, advertisement #1 would not be
displayed on the user's television 52.
[0033] Advertisement #2, which for purposes of illustration only
will be assumed to be for beer, has preselected values of at least
0.7 for the sports fan demographic category and 1 for the male in
the age group of 18-40 demographic category. The 0.7 preselected
value for the sports fan category means that the advertiser desires
to target advertisement #2 to someone who has at least fairly
significant interest in sports. In addition, the advertiser desires
to target someone who is a male in the age group of 18-40. Since
the user in FIG. 2 fits both categories as demonstrated by the
values, advertisement #2 would be displayed on the user's
television 52.
[0034] The value for each demographic category is reflective of the
characteristics of the user. There are many different ways to
calculate or determine values for such demographic categories. Any
suitable technique for generating information representing the
demographic characteristics of the user may be used if desired. For
example, demographic information on users may be gathered using
surveys (on-line, telephone, door-to-door, mail,
program-guide-based, etc.) or other type of market research. The
following describes one suitable technique for calculating or
determining the values for the demographic categories based on user
inputs in the program guide.
[0035] User inputs received by the user input receiver 62 have
predetermined weight values (WV) associated with them. In FIG. 3,
there are shown four such exemplary user inputs with corresponding
weight values (the selection of value range 0-1 for the weight
values is not significant in and of itself): recording a program
with weight value of 1.0; setting a reminder with weight value of
0.5; tuning to a program and watching for at least five minutes
with weight value of 0.5; and retrieving information about a
program with weight value of 0.25. The weight values are indicative
of the effect the corresponding user inputs have on the values of
the demographic categories. The greater the weight value of a user
input, the greater the values of the demographic categories
associated with such user input. Therefore, according to the
example of FIG. 3, a user who records a program will have greater
values for the pertinent demographic categories than she will
retrieving information about the same program. This is because the
act of recording a program generally indicates a greater level of
interest in the program then just retrieving information for the
program.
[0036] Each channel and program having a bearing on at least one of
the demographic categories may have a preselected value (PV) for
each demographic category associated with it. This preselected
value is indicative of the channel or program's indication of how
well a user fits the demographic category. For example as shown in
FIG. 4, the ESPN channel may have a preselected value of 0.95 (from
value range of 0-1) associated with the sports fan demographic
category since there is a very strong likelihood that a viewer of
ESPN is a sports fan. However, the ESPN channel may have a
preselected value of 0.5 associated with the cat-lover demographic
category since there likely is not a strong connection between the
two. The preselected values may be determined from research,
survey, poll, or any other reliable means. Again, it should be
noted that the selection of value range 0-1 for the preselected
values is not significant in and of itself.
[0037] There is preferably a default value assigned for each
demographic category. For example, the sports fan demographic
category may have a default value of 0.5. The default value may
represent the value for a "typical" user and is utilized in
calculating the value of the demographic category for the user as
will be discussed below.
[0038] Each demographic category may have a period (P), which is
the minimum number of user inputs necessary before the demographic
category value is deemed to be meaningful and reflective of the
user. For example, the sports fan demographic category may have a
period of five.
[0039] Each channel or program having a preselected value for an
associated demographic category may have a predetermined weight
factor (WF). For example, the ESPN channel may have a weight factor
of 2 for the sports fan demographic category as shown in FIG. 4.
The weight factor represents the significance of the channel or
program relative to the period for the demographic category.
[0040] For each user input involving a relevant channel or program,
the value for a demographic category is as follows: 1 V d ( i ) = (
WV * WF * PV ) + ( ( P - ( WV * WF ) ) * V d ( i - 1 ) ) P
[0041] V.sub.d(i-1) is the previous value for the demographic
category and i represents the number of user inputs. Where i=1
(i.e., the first user input involving a relevant channel or program
associated with the demographic category), the V.sub.d(i-1) used
above is the default value for the demographic category. It should
be noted that any other equation or function which properly
reflects the user's interests based on user inputs into the system
can be used to determine values for demographic categories in
accordance with the present invention.
[0042] As an example, the determination of value for the sports fan
demographic category given three user inputs is described. Let's
assume that the three user inputs are as follows: (1) retrieve
information about a sporting event on ESPN; (2) tune in and watch
ESPN for at least five minutes; and (3) record a sporting event
from ESPN. Using the values set forth in the examples provided
above and in FIG. 3, 2 V sports fan ( 1 ) = ( 0.25 * 2 * 0.95 ) + (
( 5 - 0.25 * 2 ) * 0.5 ) 5 = ( 0.475 + 2.25 ) / 5 = 0.545 V sports
fan ( 2 ) = ( 0.5 * 2 * 0.95 ) + ( ( 5 - 0.5 * 2 ) * 0.545 ) 5 = (
0.95 + 2.18 ) / 5 = 0.626 V sports fan ( 3 ) = ( 1 * 2 * 0.95 ) + (
( 5 - 1 * 2 ) * 0.626 ) 5 = ( 1.9 + 1.878 ) / 5 = 0.7556
[0043] After the three user inputs involving ESPN, the value of the
sports fan demographic category is 0.7556, indicating that the user
is very much a sports fan. However, because there have only been
three user inputs received and the predefined period for the sports
fan demographic category is five, the calculated value may not be
significant enough for purposes of targeting advertisements (note
that the calculated value may still be used if desired). If the
calculated value is not to be used for this reason, then the
default value may be used instead.
[0044] It is preferable to target advertisements to users based on
current user information. Therefore, the present invention provides
a decay function to "refresh" the values of the demographic
categories for the user on a periodic basis, such as every seven
days, or based on a specified number of user inputs.
[0045] As an example, let's assume that the value for the sports
fan demographic category stored in memory 64 is 0.8 and the decay
function refreshes the value for the sports fan demographic
category every seven days during which no input action has been
received. If it has been seven days since the last user input
affecting the sports fan demographic category has been received,
the decay function will refresh the value for the sports fan
category to a predetermined value, such as the default value for
the demographic category. The decay function may also use the
formula given above for vd(i), with different values/parameters.
Note that it is preferable to have the microprocessor 60 perform
the decay function.
[0046] In FIG. 2, there is illustrated what may be called the
threshold approach of targeting advertisements to users. That is,
if the preselected value(s) of a demographic category for an
advertisement is met by the value of the demographic category for
the user, then the advertisement is displayed to the user by the
program guide.
[0047] Another approach of targeting advertisements to users may be
called the best fit or closest approach. In this approach, the
"closeness" of the preselected values of the demographic categories
for an advertisement is determined from the values of the
demographic categories for the user. This closeness may be
determined by, for example, calculating the absolute difference
between the preselected value and the user value for each
demographic category, and then adding all of the absolute
differences. Root-mean-square may also be used. The best fit
approach is particularly useful where it is desired to select the
advertisement(s) to be displayed from among many advertisements
transmitted to the user's set-top box.
[0048] It should be noted that the values of the demographic
categories may be based on user information from an external
source. For example, if the user's annual income is determined from
publicly available information or from a form filled out by the
user, then this information can be transmitted to the set-top box
and stored in memory.
[0049] In the illustrative program guide system 30 of FIG. 1, the
set-top box 48 calculates values for the demographic categories,
stores the calculated values and other information necessary to
calculate the values, and compares the values of the relevant
demographic categories for the user with the preselected values
associated with each advertisement to determine whether the
advertisement is to be displayed. The program guide system of the
present invention can be modified in a manner apparent to those
skilled in the art reading the description herein such that any of
these operations performed of the set-top box can be performed
instead at the television distribution facility 38 or the main
facility 32 or at any other location (not shown in FIG. 1).
[0050] Steps involved in displaying advertisements based on
demographic information are shown in FIG. 5. At step 66,
demographic category information for the user is determined using a
suitable technique such as a survey, or by monitoring the user's
actions with the program guide and calculating the demographic
category information based upon the user's actions and preselected
information stored in memory. At step 68, the demographic category
information that is representative of the user's demographic
profile is stored in the user's television equipment 44. At step
70, advertisements with associated demographic category information
(representative of the audiences to which the advertisers desire to
target the advertisements) are distributed to the user television
equipment (e.g., by transmission from main facility 32 and
distribution via television distribution facility 38). At step 72,
the program guide determines which advertisements are to be
displayed for the user by comparing the demographic category
information associated with the advertisements with the user's
demographic category information.
[0051] The foregoing is merely illustrative of the principles of
this invention and various modifications can be made by those
skilled in the art without departing from the scope and spirit of
the invention.
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