Video data reproducing apparatus and method utilizing acquired data structure including video data and related reproduction information, non-transitory recording medium containing the data structure and non-transitory recording medium storing control program for causing computer to operate as reproducing apparatus

• US 8,798,440 B2
• Filed: 03/30/2010
• Issued: 08/05/2014
• Est. Priority Date: 10/10/2003
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Kiyama, Jiro, Kizuki, Hideaki, Ohizumi, Katsushi
• Primary Examiner(s): Harvey, David
• Application Number:
  US12/798,243
• Publication Number:
  US 20100195973A1
• Time in Patent Office: 1,589 Days
• Field of Search: 386/248, 386/291, 386/239, 386/240
• US Class Current: 386/248
• CPC Class Codes: G11B 20/00086 Circuits for prevention of unauthorised reproduction or copying, e.g. piracy indicating unauthorised use of record carriers in general G11B23/28; scrambling for television signal recording H04N5/913; network architectures or network protocols for network security H04L63/00; cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
• CPC Class Codes: G11B 20/00173 wherein the origin of the content is checked, e.g. determining whether the content has originally been retrieved from a legal disc copy or another trusted source
• CPC Class Codes: G11B 20/0021 involving encryption or decryption of contents recorded on or reproduced from a record carrier
• CPC Class Codes: G11B 20/00282 the key being stored in the content area, e.g. program area, data area or user area key stored in a management area G11B20/00297
• CPC Class Codes: G11B 20/00492 wherein content or user data is encrypted
• CPC Class Codes: G11B 20/00695 said measures preventing that data are read from the recording medium
• CPC Class Codes: G11B 20/10 Digital recording or reproducing
• CPC Class Codes: G11B 2220/20 Disc-shaped record carriers
• CPC Class Codes: G11B 27/10 Indexing; Addressing; Timing or synchronising; Measuring tape travel
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/329 on a disc [VTOC]
• CPC Class Codes: G11B 27/34 Indicating arrangements indicating means incorporated in magazine or cassette G11B23/046 and G11B23/0875; indicating measured values in general G01D
• CPC Class Codes: G11B 27/36 Monitoring, i.e. supervising the progress of recording or reproducing for digital recording G11B20/00 and s.gr.; for monitoring, testing or measuring of TV recorders of the type covered by H04N5/76 and subgroups, see H04N17/06
• CPC Class Codes: H04N 5/85 on discs or drums

Abstract

A video disk player includes (i) a disk reading section for reading out video data, a program, synchronization timing information from an optical disk; (ii) a clock for generating a clock signal; (iii) a decoder for converting, in accordance with the clock signal, the video data into decompressed video data for reproduction output; (iv) a video reproducing section including a synchronization control section for transmitting, in accordance with the clock signal, a synchronization control signal to the program executing section at a timing specified by a field timing contained in the synchronization timing information, and (v) a program executing section for executing a program in accordance with the synchronization control signal received from the synchronization control section. This makes it possible to efficiently execute the program in synchronization with reproduction of AV data or the like.

Claims

1. A reproducing apparatus, comprising:

a data acquiring section for acquiring (i) video data, (ii) a play list indicating an order in which the video data is reproduced, (iii) a program to be executed in synchronization with reproduction of the video data, and (iv) program management information for controlling execution of the program;

a decoding section for decoding the video data; and

a program executing section for executing the program,

the program management information including (i) program specifying information specifying the program and (ii) play list specifying information specifying the play list, and

the reproducing apparatus (i) instructing the program executing section to execute the program specified by the program specifying information included in the program management information which is acquired by the data acquiring section, and (ii) instructing the decoding section to start decoding the video data in the order indicated by the play list specified by the play list specifying information included in the program management information;

wherein each of the sections is implemented, at least in part, with hardware.

2. A method for reproducing video data on a reproducing apparatus including:

a decoding section for decoding the video data; and

a program executing section for executing a program,

the method comprising the steps of;

(A) acquiring (i) video data, (ii) a play list indicating an order in which the video data is reproduced, (iii) a program to be executed in synchronization with the reproduction of the video data, and (iv) program management information which is for controlling execution of the program and includes (a) program specifying information for specifying the program and (b) play list specifying information for specifying the play list; and

(B) (i) instructing the program executing section to execute the program specified by the program specifying information included in the program management information which is acquired in step (A), and (ii) instructing the decoding section to start decoding the video data in the order indicated by the play list specified by the play list specifying information included in the program management information;

wherein each of the sections is implemented, at least in part, with hardware.

3. A non-transitory content recording medium on which video data, a play list indicating an order in which the video data is reproduced, a program to be executed in synchronization with reproduction of the video data, and program management information for controlling execution of the program are stored

the program management information including (i) program specifying information specifying the program and (ii) play list specifying information specifying the play list, and

the program management information having a data structure such that the program management information causes a reproducing apparatus having acquired the program management information to (a) provide an instruction to execute the program specified by the program specifying information included in the program management information and to (b) provide an instruction to start decoding the video data in the order indicated by the play list specified by the play list specifying information included in the program management information.

4. A non-transitory computer-readable recording medium on which a control program for causing a computer to operate as a reproducing apparatus including a decoding section for decoding video data and a program executing section for executing a program are stored, the control program causing the computer to execute the steps of:

(A) acquiring (i) video data, (ii) a play list indicating an order in which the video data is reproduced, (iii) a program to be executed in synchronization with reproduction of the video data, and (iv) program management information which is for controlling execution of the program and includes (a) program specifying information for specifying the program and (b) play list specifying information for specifying the play list; and

(B) (i) instructing the program executing section to execute the program specified by the program specifying information included in the program management information which is acquired in step (A), and (ii) instructing the decoding section to start decoding the video data in the order indicated by the play list specified by the play list specifying information included in the program management information; and

wherein each of the sections is implemented, at least in part, with hardware.