Record/reproduction apparatus for recording/reproducing multi-channel signals in different areas of a recording medium

• US 5,587,978 A
• Filed: 04/15/1993
• Issued: 12/24/1996
• Est. Priority Date: 04/16/1992
• Status: Expired due to Term

• Current Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Inventors: Ishida, Masayuki, Hirai, Nobuaki, Tsukamoto, Manabu, Ishida, Yoshinobu, Endo, Kazuhito
• Primary Examiner(s): Epps, Georgia Y.
• Assistant Examiner(s): HUBER, PAUL W
• Application Number:
  US08/046,143
• Time in Patent Office: 1,349 Days
• Field of Search: 369/47, 369/54, 369/58, 369/32, 369/60, 369/52, 369/48, 369/49, 369/59, 369/30, 369/33, 360/18, 360/19.1, 360/20, 360/22, 360/23, 360/24
• US Class Current: 369/124.01
• 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 20/00768 wherein copy control information is used, e.g. for indicating whether a content may be copied freely, no more, once, or never, by setting CGMS, SCMS, or CCI flags
• CPC Class Codes: G11B 20/00992 Circuits for stereophonic or quadraphonic recording or reproducing
• CPC Class Codes: G11B 20/10527 Audio or video recording; Data buffering arrangements G11B20/12 - G11B20/18 take precedence
• CPC Class Codes: G11B 20/1803 by redundancy in data representation
• CPC Class Codes: G11B 20/1809 by interleaving
• CPC Class Codes: G11B 2020/10592 specifically adapted for recording or reproducing multichannel signals
• CPC Class Codes: G11B 2220/20 Disc-shaped record carriers
• CPC Class Codes: G11B 2220/2529 Mini-discs
• CPC Class Codes: G11B 2220/2545 CDs
• CPC Class Codes: G11B 2220/65 wherein solid state memory is used for storing indexing information or metadata
• CPC Class Codes: G11B 27/005 Reproducing at a different information rate from the information rate of recording for television signals H04N5/783
• 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 27/11 by using information not detectable on the record carrier
• 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: G11B 7/28 Re-recording, i.e. transcribing information from one optical record carrier on to one or more similar or dissimilar record carriers

Abstract

A digital signal which is recorded on a recording medium with being encoded is duplicated to another recording medium without being decoded. An audio signal is recorded and/or reproduced using data recorded in a TOG of the recording medium. A first data signal (2-channel audio signal) is intermittently recorded on and/or reproduced from a first area of the recording medium, and a second data signal (other 2-channel audio signal) is intermittently recorded on and/or reproduced from a second area of the recording medium during a period in which the first data signal is not recorded or reproduced.

Claims

1. A recording/reproducing apparatus for recording data signals having a compressed data amount and recording signals having continuous addresses on a recording medium, and reproducing the data signals, comprising:

data signal input means for encoding and compressing a continuous input signal, output as a first data signal;

recording means for recording the first data signal on the recording medium;

reproduction means for reproducing a second data signal from the recording medium;

recording/reproduction control means for recording a first portion of the first data signal in a first area of the recording medium, for reproducing a first portion of the second data signal from a second area, for recording a second portion of the first data signal, following an end address of the first portion of the first data signal, into the first area of the recording medium, and for reproducing a second portion of the second data signal from the second data area, thereby alternately recording the first data signal and reproducing the second data signal; and

data signal output means for expanding and decoding at least the first and second portions of the second data signal to produce a continuous output signal.

2. The recording/reproducing apparatus of claim 1, wherein the first data signal includes a first channel and a second channel, wherein said recording means intermittently records the first channel and the second channel, such that the second channel is recorded when the recording of the first channel is not conducted, to thereby continuously record the first data signal on the recording medium;

and

the second data signal includes a third channel and a fourth channel, wherein said reproducing means intermittently reproduces the third channel and the fourth channel, such that the fourth channel is reproduced when reproduction of the third channel is not conducted, to thereby continuously reproduce the second data signal from the recording medium.

3. The recording and reproducing apparatus according to claim 1, wherein

said data signal output means outputs said continuous output signal simultaneously with receipt of said continuous input signal by said data signal input means.

4. A recording/reproduction apparatus for recording data signals having a compressed data amount and for recording signals having continuous addresses on a recording medium and reproducing the data signals, comprising:

data signal input means for encoding and compressing a first group of channels of a multi-channel data signal, output as a first data signal, said first group of channels being represented by a continuous input signal;

recording means for recording the first data signal on the recording medium;

reproducing means for reproducing a second data signal from the recording medium;

recording/reproduction control means for recording a first portion of the first data signal into a first area of the recording medium, for reproducing a first portion of the second data signal from a second area of the recording medium, for recording a second portion of the first data signal, following an end address of said first portion of the first data signal, into the first area of the recording medium, and for reproducing a second portion of the second data signal from the second data area, thereby alternately recording the first data signal and reproducing the second data signal; and

data signal output means for expanding and decoding at least the first and second portions of the second data signal to produce a continuous output signal representing a second group of channels of the multi-channel data signal.

5. The recording/reproducing apparatus of claim 4, wherein the multi-channel data signal is a four channel signal and the first group of channels includes two channels and the second group of channels includes two channels.

6. The recording/reproducing apparatus of claim 5, wherein the four channel signal is a four channel audio signal.

7. The recording/reproducing apparatus of claim 5, wherein said recording means intermittently records a first channel of the first group of channels, and a second channel of the first group of channels such that the second channel of the first group of channels is recorded when recording of the first channel of the first group of channels is not conducted, to thereby continuously record the first data signal on the recording medium;

and

said reproducing means intermittently reproduces a first channel of the second group of channels and a second channel of the second group of channels, such that the second channel of the second group of channels is reproduced when reproduction of the first channel of the second group of channels is not conducted, to thereby continuously reproduce the second data signal from the recording medium.

8. The recording and reproducing apparatus according to claim 4, wherein

said data signal output means outputs said continuous output signal simultaneously with receipt of said continuous input signal by said data signal input means.