INFORMATION PROCESSING APPARATUS AND METHOD

• US 20080075175A1
• Filed: 08/17/2007
• Published: 03/27/2008
• Est. Priority Date: 09/27/2006
• Status: Abandoned Application

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: TAKAHASHI, Takanori, Shibata, Shojiro, Koyabu, Kyohei, Shirane, Keita
• Application Number:
  US11/840,668
• Publication Number:
  US 20080075175A1
• Time in Patent Office: Days
• US Class Current: 375/240.28
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence
• 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

Abstract

An information processing apparatus that decodes a plurality of coded streams includes a decoder configured to decode the plurality of coded streams and a control unit configured to control the decoding of the plurality of coded streams so that the start of decoding a subject frame among frames forming the plurality of coded streams is delayed by an amount equal to a delay time, which is the longest pre-processing time among pre-processing times necessary for starting decoding the frames after an instruction to decode the subject frame is given.

Claims

1. An information processing apparatus that decodes a plurality of coded streams, comprising:

decoding means for decoding the plurality of coded streams; and

control means for controlling the decoding of the plurality of coded streams so that the start of decoding a subject frame among frames forming the plurality of coded streams is delayed by an amount equal to a delay time, which is the longest pre-processing time among pre-processing times necessary for starting decoding the frames after an instruction to decode the subject frame is given.

2. The information processing apparatus according to claim 1, further comprising storage means for storing video signals obtained as a result of performing decoding by the decoding means.

3. The information processing apparatus according to claim 1, wherein the control means delays the start of decoding the subject frame by an amount equal to the delay time which is determined by a bit rate of the plurality of coded streams.

4. The information processing apparatus according to claim 3, wherein the decoding means includes a first decoder that decodes a first coded stream and a second decoder that decodes a second coded stream, and

the control means delays the start of decoding a subject frame among frames forming the first coded stream and the second coded stream by an amount equal to the delay time which is determined by a higher bit rate of bit rates of the first coded stream and the second coded stream.

5. The information processing apparatus according to claim 1, wherein the plurality of coded streams are streams in conformity with MPEG standards, and

the delay time is determined on the basis of a time necessary for inputting the plurality of coded streams into the decoding means and a time necessary for decoding another frame which is decoded before the subject frame.

6. The information processing apparatus according to claim 1, wherein the delay time is an integral multiple of a length of a display cycle of the frames forming the plurality of coded streams, and

the decoding means counts a time before the decoding of the subject frame is started by decrementing the delay value by every duration equal to the length of the display cycle on the basis of a clock signal synchronizing with the display cycle.

7. An information processing method for decoding a plurality of coded streams, comprising the steps of:

controlling the decoding of the plurality of coded streams so that the start of decoding a subject frame among frames forming the plurality of coded streams is delayed by an amount equal to a delay time, which is the longest pre-processing time among pre-processing times necessary for starting decoding the frames after an instruction to decode the subject frame is given; and

decoding the plurality of coded streams.

8. An information processing apparatus that decodes a plurality of coded streams, comprising:

a decoder configured to decode the plurality of coded streams; and

a control unit configured to control the decoding of the plurality of coded streams so that the start of decoding a subject frame among frames forming the plurality of coded streams is delayed by an amount equal to a delay time, which is the longest pre-processing time among pre-processing times necessary for starting decoding the frames after an instruction to decode the subject frame is given.