Digital information recording-reproducing apparatus

• US 20070154175A1
• Filed: 03/14/2007
• Published: 07/05/2007
• Est. Priority Date: 06/07/1993
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Arai, Takao, Okamoto, Hiroo, Amada, Nobutaka, Noguchi, Takaharu, Yamazaki, Shigeru
• Granted Patent: US 8,472,785 B2
• Time in Patent Office: Days
• US Class Current: 386/259
• CPC Class Codes: G11B 15/1875 adaptations for special effects or editing signal processing or indexing therefor G11B27/00
• 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 20/00188 involving measures which result in a restriction to authorised devices recording or reproducing contents to/from a record carrier
• CPC Class Codes: G11B 20/0021 involving encryption or decryption of contents recorded on or reproduced from a record carrier
• CPC Class Codes: G11B 20/00246 wherein the key is obtained from a local device, e.g. device key initially stored by the player or by the recorder
• CPC Class Codes: G11B 20/00557 wherein further management data is encrypted, e.g. sector headers, TOC or the lead-in or lead-out areas
• CPC Class Codes: G11B 20/00695 said measures preventing that data are read from the recording medium
• CPC Class Codes: G11B 20/0071 involving a purchase action
• CPC Class Codes: G11B 20/0084 wherein the usage restriction can be expressed as a specific time or date
• CPC Class Codes: G11B 2220/90 Tape-like record carriers
• CPC Class Codes: G11B 27/3027 used signal is digitally coded
• CPC Class Codes: G11B 27/3036 Time code signal
• CPC Class Codes: G11B 5/00813 magnetic tapes
• CPC Class Codes: H04N 5/765 Interface circuits between an apparatus for recording and another apparatus
• CPC Class Codes: H04N 5/78263 for recording on tracks inclined relative to the direction of movement of the tape
• CPC Class Codes: H04N 5/919 by dividing samples or signal segments, e.g. television lines, among a plurality of recording channels
• CPC Class Codes: H04N 5/9201 involving the multiplexing of an additional signal and the video signal
• CPC Class Codes: H04N 5/9261 involving data reduction
• CPC Class Codes: H04N 5/9265 with processing of the sound signal

Abstract

A digital information recording-reproducing apparatus which records and reproduces a digital information signal transmitted together with an additional information includes a discriminator which discriminates a type of the digital information signal based on the additional information, a recorder which generates control information based on the additional information, adds the control information to the digital information signal, and records the digital information signal having the control information added thereto, a reproducer which reproduces the recorded digital information signal recorded by the recorder, and a controller which controls reproduction based on the control information. When the discriminator discriminates the type of the digital information signal as being a specific type and the digital information signal is recorded by the recorder, the reproducer reproduces the digital information signal.

Claims

1. A digital information recording-reproducing apparatus which records and reproduces a digital information signal transmitted together with an additional information, comprising:

a discriminator which discriminates a type of the digital information signal based on the additional information;

a recorder which generates control information based on the additional information, adds the control information to the digital information signal, and records the digital information signal having the control information added thereto;

a reproducer which reproduces the recorded digital information signal recorded by the recorder; and

a controller which controls reproduction based on the control information;

wherein when the discriminator discriminates the type of the digital information signal as being a specific type and the digital information signal is recorded by the recorder, the reproducer reproduces the digital information signal.

2. A digital information recording-reproducing apparatus according to claim 1, wherein the recorded digital information signal is an encrypted digital information signal, and wherein, when the type of the recorded digital information signal is the specific type, the reproducer decrypts the encrypted digital information signal.

3. A digital information recording-reproducing apparatus which records and reproduces a digital information signal transmitted together with an additional information, comprising:

a discriminator which discriminates a type of the digital information signal based on the additional information;

a recorder which generates control information to be used for reproduction control based on the additional information, adds the control information to the digital information signal, and records the digital information signal having the control information added thereto;

a reproducer which reproduces the digital information signal recorded by the recorder; and

a controller which controls reproduction based on the control information;

wherein when the type of the digital information signal is the specific type and the recorded digital information signal was not recorded by the recorder, the reproducer inhibits reproduction of the recorded digital information signal.

4. A digital information recording-reproducing apparatus according to claim 3, wherein the recorded digital information signal is an encrypted digital information signal, and wherein, when the type of the recorded digital information signal is the specific type, the reproducer decrypts the encrypted digital information signal.