Program content reproduciton apparatus capable of appropriately notifying viewer of presence of sub content

• US 20070050808A1
• Filed: 09/19/2005
• Published: 03/01/2007
• Est. Priority Date: 08/26/2005
• Status: Abandoned Application

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Ueda, Toru, Matsuyama, Tetsuya, Hagawa, Toshihide
• Application Number:
  US11/228,357
• Publication Number:
  US 20070050808A1
• Time in Patent Office: Days
• US Class Current: 725/31
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/4312 involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
• CPC Class Codes: H04N 21/4314 for fitting data in a restricted space on the screen, e.g. EPG data in a rectangular grid
• CPC Class Codes: H04N 21/4332 by placing content in organized collections, e.g. local EPG data repository interfaces, Database management systems or updating for information retrieval G06F16/23; details of retrieval of video data and associated meta data in video database G06F16/739
• CPC Class Codes: H04N 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• CPC Class Codes: H04N 21/4627 Rights management associated to the content security in data switching network management H04L41/28; security management or policies for network security H04L63/20; access security in wireless networks H04W12/08
• CPC Class Codes: H04N 21/47815 Electronic shopping payment schemes, payment architectures or payment protocols for electronic shopping systems G06Q20/12
• CPC Class Codes: H04N 21/8126 involving additional data, e.g. news, sports, stocks, weather forecasts
• CPC Class Codes: H04N 21/8543 using a description language, e.g. Multimedia and Hypermedia information coding Expert Group [MHEG], eXtensible Markup Language [XML] information retrieval of semistructured data, the underlying structure being taken into account, e.g. mark-up language structure data G06F16/80
• CPC Class Codes: H04N 7/17318 Direct or substantially direct transmission and handling of requests

Abstract

A program content reproduction apparatus obtains a program content and authentication information transmitted from a broadcast station at a broadcast reception unit, and obtains sub content data transmitted from a server at a communication unit. The program content is reproduced and displayed by a program content reproduction unit. The sub content data is stored in a sub content data storage unit and authenticated by a sub content data authentication unit based on the authentication information. If the sub content data is approved, presence of the sub content data is presented on the reproduced program content by a sub content data presence display unit.

Claims

1. A program content reproduction apparatus, comprising:

a broadcast reception unit for obtaining a program content and authentication information;

a program content reproduction unit for reproducing said program content;

a sub content data storage unit for storing sub content data;

a sub content data authentication unit for authenticating the sub content data stored in said sub content data storage unit based on said authentication information; and

a sub content data presence presenting unit for presenting presence of said sub content data during reproduction of said program content by said program content reproduction unit based on a result of authentication by said sub content data authentication unit.

2. The program content reproduction apparatus according to claim 1, wherein

said sub content data presence presenting unit presents solely presence of the sub content data approved by said sub content data authentication unit.

3. The program content reproduction apparatus according to claim 1, wherein

said sub content data presence presenting unit presents, in a different manner, the sub content data approved by said sub content data authentication unit and the sub content data non-approved by the same.

4. The program content reproduction apparatus according to claim 1, wherein

said authentication information is a public key,

said sub content data is additionally provided with electronic signature by means of a secret key paired with said public key, and

said sub content data authentication unit authenticates said sub content data by verifying authenticity of said electronic signature with said public key.

5. The program content reproduction apparatus according to claim 1, further comprising:

a sub content data selection unit for selecting the sub content data of which presence has been presented by said sub content data presence presenting unit; and

a sub content data reproduction unit for reproducing said sub content data selected by said sub content data selection unit.

6. The program content reproduction apparatus according to claim 5, further comprising:

a message creation unit for creating a fixed-format message based on information contained in said sub content data and input by a user; and

a message transmission unit for transmitting said message created by said message creation unit.

7. The program content reproduction apparatus according to claim 1, further comprising an obtaining unit for obtaining said sub content data from other apparatus, wherein

communication means different from said broadcast reception unit and said obtaining unit is employed.

8. A program content reproduction apparatus, comprising:

a broadcast reception unit for obtaining a program content and authentication information;

a program content reproduction unit for reproducing said program content;

a sub content data storage unit for storing sub content data;

a sub content data authentication unit for authenticating the sub content data stored in said sub content data storage unit based on said authentication information; and

a sub content data reproduction unit for reproducing said sub content data approved by said sub content data authentication unit.

9. The program content reproduction apparatus according to claim 8, wherein

said sub content data has priority, and

said sub content data reproduction unit reproduces the sub content data having highest priority if there are a plurality of pieces of sub content data approved by said sub content data authentication unit.