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Apparatus and method of data processing through serial bus

a serial bus and data processing technology, applied in the field of data processing, can solve the problems of cumbersome operation and more unstable data transmission, and achieve the effect of effective use of bus resources

Inactive Publication Date: 2005-03-10
VICTOR CO OF JAPAN LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010] A purpose of the present invention is to provide an apparatus and a method of processing data that is received or to be transmitted through a serial bus, that achieve effective usage of bus resources.

Problems solved by technology

On the other hand, the narrower the transmission band, the more unstable is the data transmission due to violation of the communication protocols.
Furthermore, a user has to set the data recording mode for each input MPEG2TS, which is a cumbersome operation.

Method used

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  • Apparatus and method of data processing through serial bus
  • Apparatus and method of data processing through serial bus

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Embodiment Construction

[0022] Preferred embodiments according to the present invention will be disclosed with reference to the attached drawings.

[0023]FIG. 1 shows a block diagram of a recording and reproducing apparatus according to the present invention.

[0024] An MPEG2TS is input to or output from an IEEE1394 interface (IF) 1 through a 1394 serial bus.

[0025] The input MPEG2TS is supplied to a signal processor 2 for error correction, etc. The output of the signal processor 2 is supplied to a recorder / reproducer 3 for modulation. The modulated MPEG2TS is stored in a storage medium 4.

[0026] The stored MPEG2TS is then retrieved and demodulated by the recorder / reproducer 3, and applied error correction, etc., by the signal processor 2. The MPEG2TS is supplied to and output from the IEEE13941F 1 through the 1394 serial bus. Or, the MPEG2TS is supplied to an MPEG processor 5 and decoded to be an output video signal.

[0027] On the other hand, an input video signal is encoded by the MPEG processor 5, and the...

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Abstract

Data is received which is transmitted through a serial bus in a predetermined transmission band. The serial bus is preferably in conformity with the IEEE 1394 standards. One of recording modes for different recording rates is selected in accordance with the transmission band of the received data. The data is recorded in the selected recording mode. Data is reproduced which has been recorded in a recording mode for a predetermined recording rate. A transmission band is allocated, based on the recording mode, for transmitting the data through a serial bus.

Description

BACKGROUND OF THE INVENTION [0001] The present invention relates to processing of data that is received or to be transmitted through a serial bus. Particularly, this invention relates to recording and reproducing data that is input through a serial bus, and also outputting the video data through the same bus in conformity with the IEEE (Institute of Electrical and Electronics Engineers) 1394 standards. This serial bus is called 1394 serial bus hereinafter. [0002] Video tape recorders (VTRs) are well known audio and video equipment that encode video signals under the DV (Digital Video) standards defined in the IEC (International Electrotechnical Commission) 61883 standards, and outputs the encoded video signals through the 1394 serial bus. [0003] The DV standards define the SD (Standard Definition) mode and HD (High Definition) mode. The SD mode offers recording and reproduction of video signals having definition, such as, NTSC (National Television System Committee) video signals. Th...

Claims

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Application Information

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IPC IPC(8): H04L12/40G06F13/38H04L12/64H04N5/765H04N5/781H04N7/24H04N9/79H04N9/804H04N19/102H04N19/134H04N19/60H04N21/2381H04N21/4363H04N21/438
CPCH04L12/40058H04L12/40065H04L12/40117H04N9/7921H04N21/4381H04N21/2381H04N21/4363H04N21/43632H04N9/8042
Inventor SHINDO, TOMOYUKI
Owner VICTOR CO OF JAPAN LTD