Receiving apparatus, receiving method, and supplying medium

• US 20050163485A1
• Filed: 03/24/2005
• Published: 07/28/2005
• Est. Priority Date: 03/29/1999
• Status: Abandoned Application

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Hirai, Jun
• Application Number:
  US11/089,356
• Publication Number:
  US 20050163485A1
• Time in Patent Office: Days
• US Class Current: 386/214
• CPC Class Codes: H04N 2005/91314 the copy protection signal being a pulse signal inserted in blanking intervals of the video signal, e.g. pseudo-AGC pulses, pseudo-sync pulses
• 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 2005/91371 the video color burst signal being modified
• CPC Class Codes: H04N 21/4135 external recorder interface circuits between an apparatus for recording television signals and a television receiver H04N5/775
• CPC Class Codes: H04N 21/4147 PVR [Personal Video Recorder] H04N5/76 takes precedence ; arrangements for broadcast with accumulation-type receivers H04H20/40
• CPC Class Codes: H04N 21/426 Internal components of the client ; Characteristics thereof H04N5/44 takes precedence
• CPC Class Codes: H04N 21/42646 for reading from or writing on a non-volatile solid state storage medium, e.g. DVD, CD-ROM
• CPC Class Codes: H04N 21/4347 Demultiplexing of several video streams
• CPC Class Codes: H04N 21/4348 Demultiplexing of additional data and video streams
• CPC Class Codes: H04N 21/44016 involving splicing one content stream with another content stream, e.g. for substituting a video clip
• CPC Class Codes: H04N 21/4627 Rights management associated to the content security in data switching network management H04L41/28; security management or policies for network security H04L63/20; access security in wireless networks H04W12/08
• CPC Class Codes: H04N 21/8355 involving usage data, e.g. number of copies or viewings allowed
• CPC Class Codes: H04N 5/775 between a recording apparatus and a television receiver
• CPC Class Codes: H04N 5/85 on discs or drums
• CPC Class Codes: H04N 9/8042 involving data reduction

Abstract

Digital television broadcast signals are received and AV signals are reproduced in a common apparatus. A digital television signal is received and is separated into a compressed first video signal, a compressed first audio signal, and first copyright protection information. An AV signal is reproduced from a recording medium and is separated into a second compressed video signal, a second compressed audio signal, and second copyright protection information. The first signals and information are selected when a received operation command is a command to select the digital television broadcast channel, and the second signals and information are selected when the received operation command is a command to reproduce data. The selected signals and information are decoded to generate a decoded video signal, a decoded audio signal, and a copyright protection signal, and the copyright protection signal is added to the decoded signals to limit copying.

Claims

1. A method of receiving digital television broadcast signals and reproducing AV signals in a common apparatus, said method comprising:

receiving at least one operation command provided by a user;

determining whether the received operation command is a command to select a digital television broadcast channel or a command to reproduce data;

when the received operation command is a command to select a digital television broadcast channel;

receiving a digital television broadcast signal, and

separating the received digital television broadcast signal into a first video signal coded in a compressed form according to a predetermined method, a first audio signal coded in the compressed form, and first copyright protection information;

when the received operation command is a command to reproduce data;

reproducing an AV signal from a recording medium, and

separating the reproduced signal into a second video signal coded in the compressed form, a second audio signal coded in the compressed form, and second copyright protection information;

selecting the first video signal, the first audio signal, and the first copyright protection information when the received operation command is the command to select the digital television broadcast channel and selecting the second video signal, the second audio signal, and the second copyright protection information when the received operation command is the command to reproduce data;

decoding the selected video signal, the selected audio signal, and the selected copyright protection information to generate a decoded video signal, a decoded audio signal, and a copyright protection signal; and

adding the copyright protection signal to the decoded video signal and to the decoded audio signal to limit the copying of the decoded video signal and the decoded audio signal.

2. A method according to claim 1, wherein the predetermined method is a method according to the MPEG-2 standard.

3. A method according to claim 1, wherein the recording medium is a DVD.

4. A method according to claim 1, further comprising recording the received digital television broadcast signal onto the recording medium.

5. A method according to claim 1, further comprising displaying an image based on the decoded video signal and emitting sound based on the decoded audio signal.