Broadcasting system and reception apparatus

• US 20010049822A1
• Filed: 11/30/2000
• Published: 12/06/2001
• Est. Priority Date: 12/01/1999
• Status: Active Grant

• Current Assignee: Saturn Licensing LLC (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Oishi, Hiroaki, Yano, Hajime, Kanota, Keiji, Yokota, Junichi, Fujino, Toyomi, Yoshida, Tadao
• Granted Patent: US 7,908,619 B2
• Time in Patent Office: Days
• US Class Current: 725/34
• CPC Class Codes: H04N 21/2353 specifically adapted to content descriptors, e.g. coding, compressing or processing of metadata
• CPC Class Codes: H04N 21/4335 Housekeeping operations, e.g. prioritizing content for deletion because of storage space restrictions storage management, e.g. defragmentation G06F3/0604; unloading stored programs G06F9/445; storage management in file systems G06F16/10; buffering arrangements in a network node or in an end terminal in packet networks H04L49/90
• CPC Class Codes: H04N 21/4532 involving end-user characteristics, e.g. viewer profile, preferences monitoring of user activities for profile generation for accessing a video database G06F16/739; user profiles in network data switching protocols H04L67/306; processing of user preferences or user profiles in wireless networks H04W8/18
• CPC Class Codes: H04N 21/454 Content or additional data filtering, e.g. blocking advertisements
• CPC Class Codes: H04N 21/4826 using recommendation lists, e.g. of programs or channels sorted out according to their score
• CPC Class Codes: H04N 21/812 involving advertisement data advertising per se G06Q30/02
• CPC Class Codes: H04N 5/76 Television signal recording
• CPC Class Codes: H04N 7/163 by receiver means only
• CPC Class Codes: H04N 9/8205 involving the multiplexing of an additional signal and the colour video signal

Abstract

A broadcasting system 1 provides a digital content to be broadcast with an attribute vector A thereof. A filter 12 is assigned with a selection vector S indicating user'"'"'s taste. The filter 12 performs a standardized inner product operation between the selection vector S and the attribute vector A for selecting and recording broadcast programs.

A=(a₁, a₂, a₃, . . . , a_n)

S=(s₁, s₂, s₃, . . . , s_n) $P=\frac{A·S}{AS}$

Claims

1. A broadcasting system comprising:

a broadcasting station for broadcasting a digital content together with attribute information indicating an attribute thereof; and

a plurality of reception apparatuses having reception means for receiving said digital content and attribute information broadcast from a broadcasting station, a recording medium for recording received digital contents and attribute information, output means for outputting received digital contents, and selection means for selecting digital contents by comparing selection information indicating users'"'"'s taste with attribute information assigned to digital contents, wherein

said attribute information is expressed with an n-dimensional vector A comprising attribute items as elements each indicative of attribute intensities for a digital content;

said selection information is expressed with an n-dimensional vector S comprising user'"'"'s taste items as elements each indicative of taste intensities;

item types and orders for said attribute information and said selection information correspond to those for an attribute information'"'"'s vector A and a selection information'"'"'s vector S; and

said reception apparatus'"'"'s selection means performs an inner product operation between an attribute information'"'"'s vector A attached to a broadcast digital content and a selection information'"'"'s vector S and determines whether to select that digital content based on an inner product operation result.

2. A broadcasting system according to

claim 1

, wherein said reception apparatus'"'"'s selection means finds a selection value P based on the following equation and selects a digital content based on the size of this selection value P:

A=(a₁, a₂, a₃, . . . , a_n)

S=(s₁, s₂, s₃, . . . , s_n)

$P=\frac{A·<br><br>S}{<br><br>A<br><br><br><br>\text{\hspace{1em}<br><br>}<br><br><br><br>S<br><br>}$

where

$A·<br><br>S=\underset{k=1}{\overset{n}{\sum <br><br>}}<br><br>a_k<br><br>S_k$

$<br><br>A<br><br>=\sqrt{\underset{k=1}{\overset{n}{\sum <br><br>}}<br><br>a_k^2}$

$<br><br>S<br><br>=\sqrt{\underset{k=1}{\overset{n}{\sum <br><br>}}<br><br>S_k^2}$

in which neither A nor S is 0 vector.

3. A broadcasting system according to

claim 1

, wherein said selection information'"'"'s vector S is found from a vector A of attribute information attached to a plurality of digital contents selected by a user.

4. A broadcasting system according to

claim 3

, wherein said selection information'"'"'s vector S is found according to the following equation:

5. A broadcasting system according to

claim 3

, wherein said selection information'"'"'s vector S is found according to the following equation:

6. A broadcasting system according to

claim 3

, wherein said selection information'"'"'s vector S is found by averaging vectors A for attribute information attached to a plurality of digital contents reproduced by a user for a specified time or more.

7. A broadcasting system according to

claim 3

, wherein said selection information'"'"'s vector S is found by averaging vectors A for attribute information attached to a plurality of digital contents reserved by a user.

8. A broadcasting system according to

claim 3

, wherein said selection information'"'"'s vector S is found by averaging vectors A for attribute information attached to a plurality of digital contents reproduced by a user for a specified time or more, averaging vectors A for attribute information attached to a plurality of digital contents reserved by a user, assigning a weight to each average, and combining these weights.

9. A broadcasting system according to

claim 1

, wherein said reception apparatus'"'"'s selection means selects a digital content based on a vector S of selection information corresponding to a plurality of users.

10. A reception apparatus comprising:

reception means for receiving said digital content and attribute information broadcast from a broadcasting station;

recording medium for recording received digital content and attribute information;

output means for outputting received digital content; and

selection means for selecting a digital content by comparing selection information indicating user'"'"'s taste with attribute information attached to the digital content, wherein

said attribute information is expressed with an n-dimensional vector A comprising attribute items as elements each indicative of attribute intensities for a digital content;

said selection information is expressed with an n-dimensional vector S comprising user'"'"'s taste items as elements each indicative of taste intensities;

item types and orders for said attribute information and said selection information correspond to those for an attribute information'"'"'s vector A and a selection information'"'"'s vector S; and

said selection means performs an inner product operation between an attribute information'"'"'s vector A attached to a broadcast digital content and a selection information'"'"'s vector S and determines whether to select that digital content based on an inner product operation result.

11. A reception apparatus according to

claim 10

, wherein said selection means finds a selection value P based on the following equation and selects a digital content based on the size of this selection value P:

A=(a₁, a₂, a₃, . . . , a_n)

S=(s₁, s₂, s₃, . . . s_n)

$P=\frac{A·<br><br>S}{<br><br>A<br><br><br><br>\text{\hspace{1em}<br><br>}<br><br><br><br>S<br><br>}$

where

$A·<br><br>S=\underset{k=1}{\overset{n}{\sum <br><br>}}<br><br>a_k<br><br>S_k$

$<br><br>A<br><br>=\sqrt{\underset{k=1}{\overset{n}{\sum <br><br>}}<br><br>a_k^2}$

$<br><br>S<br><br>=\sqrt{\underset{k=1}{\overset{n}{\sum <br><br>}}<br><br>S_k^2}$

in which neither A nor S is 0 vector.

12. A reception apparatus according to

claim 10

, wherein said selection information'"'"'s vector S is found from a vector A of attribute information attached to a plurality of digital contents selected by a user.

13. A reception apparatus according to

claim 12

, wherein said selection information'"'"'s vector S is found according to the following equation:

14. A reception apparatus according to

claim 12

, wherein said selection information'"'"'s vector S is found according to the following equation:

15. A reception apparatus according to

claim 12

, wherein said selection information'"'"'s vector S is found by averaging vectors A for attribute information attached to a plurality of digital contents reproduced by a user for a specified time or more.

16. A reception apparatus according to

claim 12

, wherein said selection information'"'"'s vector S is found by averaging vectors A for attribute information attached to a plurality of digital contents reserved by a user.

17. A reception apparatus according to

claim 12

, wherein said selection information'"'"'s vector S is found by averaging vectors A for attribute information attached to a plurality of digital contents reproduced by a user for a specified time or more, averaging vectors A for attribute information attached to a plurality of digital contents reserved by a user, assigning a weight to each average, and combining these weights.

18. A reception apparatus according to

claim 10

, wherein said selection means selects a digital content based on a vector S of selection information corresponding to a plurality of users.