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Method and electronic device for decoding compressed image data and auxiliary recording device

An electronic device and image data technology, applied in the direction of data recording, recording carrier type, recording information storage, etc., can solve the problem of long time

Inactive Publication Date: 2002-02-20
SONY COMPUTER ENTERTAINMENT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the time required to compress the data to be recorded on disc is not a big problem

Method used

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  • Method and electronic device for decoding compressed image data and auxiliary recording device
  • Method and electronic device for decoding compressed image data and auxiliary recording device
  • Method and electronic device for decoding compressed image data and auxiliary recording device

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Embodiment Construction

[0051] Description of preferred embodiments

[0052] Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to denote the same elements respectively, and repeated description of the same elements will be omitted here. [General entertainment system]

[0053] figure 1 This is a block diagram schematically showing an example of a circuit configuration of a main part of a typical video game device as an entertainment system.

[0054] The entertainment system 1 broadly includes a control system 50 with a central processing unit (CPU) 51 and its peripheral systems; a graphics system 60 with a graphic processing unit (graphic processing unit, hereinafter) for drawing in a frame buffer 63 Abbreviated as GPU) 62; A sound system 70 has a sound processing unit (sound processing unit, hereinafter referred to as SPU) for producing music, sound effect...

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Abstract

It is an object of the present invention to provide a method of and an electronic device for decoding compressed data and auxiliary recording device in a processing for coding compressed information recorded in recording medium, and which allow the future updates and improvement and real-time decoding. A method for decoding compressed image data recorded in an optical disk includes the steps of recording program data, which can perform partial decoding, in addition to the compressed image data, in the optical disk in advance, recording the program data temporally in a memory card installed removably in an electronic device, recording the program data recorded in the memory card into a main memory within the electronic device then, reading the compressed image data from the optical disk into the electronic device, using a decoding unit configured within the electronic device to decode the compressed image data partially and decoding the compressed image data having decoded partially by the program data, which is recorded in a memory in the electronic device and can perform partial decoding.

Description

field of invention [0001] The present invention relates to a method and electronic device for decoding compressed image data and an auxiliary recording device. Background of the invention [0002] Take a video game device as an example of an entertainment system. For example, in entertainment systems such as video game devices, optical discs such as CD-ROM and DVD-ROM are used as recording media for recording game programs. Such an optical disc records image information and sound (audio) information constituting a game. In general, the content of image information is extremely large. It is therefore impractical to record the contents of image information in an optical disc. [0003] Therefore, image data is usually encoded and compressed to be recorded in an optical disc. [0004] In order to load an optical disc with recorded compressed image data into a video game device and reproduce the image data recorded on the optical disc, it is necessary that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/41H04N5/85H04N5/92H04N9/82
CPCH04N9/8205G11B20/00007A63F13/95G11B2220/2545G11B2220/2562
Inventor 久夛良木健
Owner SONY COMPUTER ENTERTAINMENT INC