Reproducing/recording apparatus

• US 7,587,125 B2
• Filed: 05/18/2001
• Issued: 09/08/2009
• Est. Priority Date: 05/19/2000
• Status: Expired due to Fees

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Komoda, Koichi
• Primary Examiner(s): Tran; Thai
• Assistant Examiner(s): Hasan; Syed Y
• Application Number:
  US10/031,360
• Publication Number:
  US 20020150389A1
• Time in Patent Office: 3,035 Days
• Field of Search: 386/94, 386/33, 386/45, 386/46, 386/52, 386/70, 386/81, 386/82, 386/112, 386/125, 360/60, 360/15, 380/201, 380/203, 380/204, 705/51, 705/57, 713/161, 713/165
• US Class Current: 386/252
• CPC Class Codes: G11B 20/00007 Time or data compression or expansion audio compression based on psychoacoustics G10L19/00; data processing for reproducing audio data at different playback speeds G10L21/04; video compression H04N19/00; data compression per se H03M7/30
• 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 20/0021 involving encryption or decryption of contents recorded on or reproduced from a record carrier
• CPC Class Codes: G11B 20/00666 involving a step of erasing or nullifying data, e.g. data being overwritten with a random string
• 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 20/10 Digital recording or reproducing
• CPC Class Codes: H04N 2005/91328 the copy protection signal being a copy management signal, e.g. a copy generation management signal [CGMS]
• CPC Class Codes: H04N 2005/91364 the video signal being scrambled
• CPC Class Codes: H04N 5/765 Interface circuits between an apparatus for recording and another apparatus
• CPC Class Codes: H04N 5/913 for scrambling ; for copy protection

Abstract

A playback unit (3) reproduces contents which are recorded on a video cassette tape (2), and a recording unit (6) records the contents on another video cassette tape (7) and, simultaneously, an erasing unit (5) erases the contents from the video cassette tape (2).

Thereby, the copy-inhibited contents recorded on the video cassette tape (2) can be transferred to the other video cassette tape (7) without copying the contents.

Claims

1. A playback/recording apparatus for performing transfer of contents recorded on an erasable storage medium, between apparatuses:

said playback/recording apparatus comprising a playback/erasing apparatus as a first apparatus, a recording apparatus as a second apparatus, and a transmission line such as a transmission cable or the like for connecting the first and second apparatuses;

said first apparatus comprising;

a first authentication means for performing mutual authentication and transfer of contents between itself and the second apparatus;

a playback means for reproducing contents recorded on a first storage medium, and outputting the reproduced contents;

a detection means for detecting copyright information of the contents;

an erasing means for erasing the contents from the first storage medium; and

an encryption means for encrypting the output from the playback means, and outputting the encrypted data; and

said second apparatus comprising;

a second authentication means for performing mutual authentication and transfer of contents between itself and the first apparatus;

a decryption means for decrypting the encrypted data; and

a recording means for recording the contents on a second storage means;

wherein, when performing transfer of the contents, mutual authentication is carried out between the first authentication means and the second authentication means, the contents are reproduced by the playback means and outputted and, when the output of the detection means indicates that the contents are copy-inhibited, data of the contents are encrypted by the encryption means and outputted, the contents are erased from the first storage medium by the erasing means, the encrypted data are decrypted by the decryption means and outputted, and the contents are recorded on the second storage means by the recording means, thereby transferring the contents.

2. The playback/recording apparatus defined in claim 1, further comprising a temporary storage means for temporarily storing the contents;

wherein the contents are temporarily stored in the temporary storage means.

3. A playback/erasing apparatus as a first apparatus, which is one of components of a playback/recording apparatus for performing transfer of contents recorded on an erasable storage medium, between the first apparatus and a second apparatus, comprising:

a first authentication means for performing mutual authentication and transfer of contents between itself and the second apparatus;

a playback means for reproducing contents recorded on a first storage medium, and outputting the reproduced contents;

a detection means for detecting copyright information of the contents; and

an erasing means for erasing the contents from the first storage medium;

wherein, when performing transfer of the contents, mutual authentication is carried out between the first authentication means and the second apparatus, and the contents are reproduced by the playback means and outputted and, when the output of the detection means indicates that the contents are copy-inhibited, the contents are erased from the first storage medium by the erasing means.

4. The playback/erasing apparatus as the first apparatus defined in claim 3, further comprising a first control means for controlling the playback means and the erasing means;

wherein the playback means and the erasing means are controlled by the first control means, thereby performing transfer of the contents.

5. The playback/erasing apparatus as the first apparatus defined in claim 3, wherein mutual authentication by the first authentication means is also carried out during transfer of the contents, and the transfer of the contents is continued when mutual authentication is established.

6. The playback/erasing apparatus as the first apparatus defined in claim 3, further comprising a transfer instruction means for sending an instruction for transferring the contents, to the first apparatus;

wherein transfer of the contents is carried out according to the instruction of the transfer instruction means.

7. A playback/erasing apparatus as a first apparatus, which is one of components of a playback/recording apparatus for performing transfer of contents recorded on an erasable storage medium, between the first apparatus and a second apparatus, comprising:

a first authentication means for performing mutual authentication and transfer of contents between itself and the second apparatus;

a playback means for reproducing contents recorded on a first storage medium, and outputting the reproduced contents;

a detection means for detecting copyright information of the contents;

an erasing means for erasing the contents from the first storage medium; and

an encryption means for encrypting the output of the playback means, and outputting the encrypted data;

wherein, when performing transfer of the contents, mutual authentication is carried out between the first authentication means and the second apparatus, and the contents are reproduced by the playback means and outputted and, when the output of the detection means indicates that the contents are copy-inhibited, the data of the contents are encrypted by the encryption means and outputted, and the contents are erased from the first storage medium by the erasing means.

8. The playback/erasing apparatus as the first apparatus defined in claim 7, further comprising a temporary storage means for temporarily storing the contents;

wherein the contents are temporarily stored in the temporary storage means.