Transmitting and recording method, reproducing method, and reproducing apparatus of information and its recording medium

• US 6,693,966 B2
• Filed: 09/24/2002
• Issued: 02/17/2004
• Est. Priority Date: 06/20/1994
• Status: Expired due to Fees

• Current Assignee: Hitachi Maxell Limited (Hitachi, Ltd.)
• Original Assignee: Hitachi, Ltd.
• Inventors: Takeuchi, Toshifumi, Nakamura, Masafumi
• Primary Examiner(s): BRITTON, HOWARD W
• Application Number:
  US10/252,581
• Publication Number:
  US 20030021348A1
• Time in Patent Office: 511 Days
• Field of Search: H04/N.578, H04/N.756, 375/240.28, 348/512, 348/515, 348/518, 386/39, 386/65, 386/85, 386/96, 386/101, 386/104, 386/112
• US Class Current: 375/240.28
• CPC Class Codes: G11B 20/10527 Audio or video recording; Data buffering arrangements G11B20/12 - G11B20/18 take precedence
• CPC Class Codes: G11B 2220/2545 CDs
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/3063 Subcodes
• CPC Class Codes: H04N 21/236 Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream multiplexing of data packets for data networks, e.g. RTP/UDP H04L65/00
• CPC Class Codes: H04N 21/434 Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream demultiplexing of data packets for data networks, e.g. RTP/UDP H04L65/00
• CPC Class Codes: H04N 5/85 on discs or drums
• CPC Class Codes: H04N 9/8042 involving data reduction
• CPC Class Codes: H04N 9/8205 involving the multiplexing of an additional signal and the colour video signal
• CPC Class Codes: H04N 9/8216 using time division multiplex

Abstract

An apparatus for recording and reproducing digitally compressed data in the form of divided data in and from a recording medium. A data processing circuit adds reference time information indicating an output reference time during a reproducing process to each of the divided data in the digitally compressed data. A recording circuit records the divided data with the added reference time information in the recording medium. A reproducing circuit reproduces the divided data with the added reference time information from the recording medium. A rearranging circuit rearranges and outputs the reproduced divided data on a time axis according to the reproduced reference time information such that a time interval between adjacent divided data as outputted from the rearranging circuit is equal to a time interval between respective output reference times of the adjacent divided data.

Claims

1. An apparatus for recording and reproducing digitally compressed data in the form of divided data in and from a recording medium, comprising:

a data processing circuit which adds reference time information indicating an output reference time during a reproducing process to each of the divided data in the digitally compressed data;

a recording circuit which records the divided data with the added reference time information in the recording medium;

a reproducing circuit which reproduces the divided data with the added reference time information from the recording medium; and

a rearranging circuit which rearranges and outputs the reproduced divided data on a time axis according to the reproduced reference time information such that a time interval between adjacent divided data as outputted from the rearranging circuit is equal to a time interval between respective output reference times of the adjacent divided data.

2. An apparatus according to claim 1, further comprising a memory which stores the divided data with the added reference time information reproduced by the reproducing circuit;

wherein the rearranging circuit rearranges and outputs reproduced divided data read out from the memory.

3. An apparatus according to claim 1, wherein the digitally compressed data includes video signal data and audio signal data.

4. A method for recording and reproducing digitally compressed data in the form of divided data in and from a recording medium, comprising the steps of:

adding reference time information indicating an output reference time during a reproducing process to each of the divided data in the digitally compressed data;

recording the divided data with the added reference time information in the recording medium;

reproducing the divided data with the added reference time information from the recording medium; and

rearranging and outputting the reproduced divided data on a time axis according to the reproduced reference time information such that a time interval between adjacent divided data as outputted is equal to a time interval between respective output reference times of the adjacent divided data.

5. A method according to claim 4, further comprising the step of storing the divided data with the added reference time information reproduced in the reproducing step in a memory;

wherein the rearranging and outputting step includes the step of rearranging and outputting reproduced divided data read out from the memory.

6. A method according to claim 4, wherein the digitally compressed data includes video signal data and audio signal data.

7. A method of recording and reproducing digitally compressed data in the form of divided data in and from a recording medium, comprising the steps of:

adding rearranging information which is used for rearranging a time interval between reproduced divided data to each of the divided data in the digitally compressed data;

recording the divided data with the added rearranging information in the recording medium;

reproducing the divided data with the added rearranging information from the recording medium; and

rearranging and outputting the reproduced divided data on a time axis according to the reproduced rearranging information.

8. A method according to claim 7, wherein the step of rearranging and outputting the reproduced divided data includes the step of rearranging and outputting the reproduced divided data on a time axis according to the reproduced rearranging information such that a time interval between adjacent divided data as outputted is equal to a time interval between the adjacent divided data when the adjacent divided data were recorded in the recording medium.