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

• US 8,792,026 B2
• Filed: 03/30/2010
• Issued: 07/29/2014
• Est. Priority Date: 10/10/2003
• Status: Expired due to Fees

• 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:
  US12/798,242
• Publication Number:
  US 20100189406A1
• Time in Patent Office: 1,582 Days
• Field of Search: 386/248, 386/291, 386/239, 386/240, 386/241, 386/201, 386/228
• US Class Current: 348/248
• 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 program for reproducing the video data, (iii) a play list or play lists each indicating (a) the video data to be reproduced by the program and (b) an order in which the video data is reproduced, and (iv) program management information for controlling execution of the program; and

a program executing section for executing the program,

the program management information including specifying information which specifies the play list to be reproduced by the program, and

the reproducing apparatus selectively permitting the program, which is to be executed by the program executing section, to reproduce the play list specified by the specifying information, and, when the program is not permitted to reproduce the play list, terminating execution of the program.

2. The reproducing apparatus as set forth in claim 1,

wherein:

the data acquiring section acquires plural pieces of the program management information for controlling a plurality of programs, respectively and

for each of the programs, the reproducing apparatus permits the program, which is controlled by corresponding one of the plural pieces of program management information, to reproduce the play list specified by the specifying information included in the corresponding one of the plural pieces of program management information.

3. A non-transitory computer-readable recording medium on which a control program for causing a computer to operate as a reproducing apparatus is stored, the control program causing the computer to execute the steps of:

(A) acquiring (i) video data, (ii) a program for reproducing the video data, (iii) a play list or play lists each indicating (a) the video data to be reproduced by the program and (b) an order in which the video data is reproduced, and (iv) program management information for controlling execution of the program, the program management information including specifying information which specifies the play list to be reproduced by the program;

(B) executing the program; and

(C) selectively permitting the program, which is executed in step (B), to reproduce the play list specified by the specifying information, and, when the program is not permitted to reproduce the play list, terminating execution of the program.

4. A method of reproducing video data on a reproducing apparatus, comprising the steps of:

(A) acquiring (i) video data, (ii) a program for reproducing the video data, (iii) a play list or play lists each indicating (a) the video data to be reproduced by the program and (b) an order in which the video data is reproduced, and (iv) program management information for controlling execution of the program, the program management information including specifying information which specifies the play list to be reproduced by the program;

(B) executing the program; and

(C) selectively permitting the program, which is executed in step (B), to reproduce the play list specified by the specifying information, and, when the program is not permitted to reproduce the play list, terminating execution of the program.