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Data transfer device and transfer control method

A technology for controllers and sending devices, applied in the fields of electrical digital data processing, digital recording/reproduction, television, etc.

Inactive Publication Date: 2011-06-22
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, it takes even more time to obtain EDID information

Method used

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  • Data transfer device and transfer control method
  • Data transfer device and transfer control method
  • Data transfer device and transfer control method

Examples

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Embodiment Construction

[0030] Preferred embodiments of the data transmission device and data transmission control method according to the present invention will be described in detail below with reference to the accompanying drawings. figure 1 A state is shown in which a video / audio transmission device 101 such as a DVD player or a DVD recorder and a reception device 106 such as a digital television or an AV amplifier are connected to each other through a first interface 110 (HDMI).

[0031] The video / audio transmission device 101 includes a controller (microcomputer, etc.) 103 for controlling the system and a transmitter 102 for controlling video and audio data to be transmitted. The transmitter 102 includes a video / audio transmitter 105 , a device information acquisition unit 112 and a control register 113 .

[0032]The video / audio transmitter 105 plays the role of a TDMS transmitter that stops and starts transmission of video and audio data using a transmission method called TMDS (Minimum Transi...

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Abstract

A video / audio transmitting device according to the present invention comprises a transmitter, a controller for controlling the transmitter, and a plurality of memory elements, wherein the transmitter comprises a video / audio transmitter for transmitting a video / audio signal to a receiving device outside and a device information obtaining unit for receiving from the receiving device device information including information relating to a receiving function of the receiving device and transmitting the received information to the controller. The plurality of memory elements temporarily stores therein the device information. The controller performs parallel processing of writing the device information in at least one of the plurality of memory elements and reading the device information from atleast one of the other memory elements and controls the transmitter based on the device information sequentially read from the plurality of memory elements in the parallel processing.

Description

technical field [0001] The present invention relates to a data transmission device and a data transmission control method, and more particularly to a device for acquiring and transmitting information related to a receiving device. Background technique [0002] In recent years, HDMI (High Definition Multimedia Interface) communication has been adopted in order to transmit video data and audio data from a transmitting device, examples of which are DVD players and DVD recorders, to receiving devices, such as digital televisions and amplifier. When the sending device detects that it is connected to the receiving device via an HDMI cable, it retrieves a data structure called EDID (Extended Display Identification Data) from the peer device (receiving device) by means of DDC (Display Data Channel) communication, and then sends an Video data and audio data of the peer device connected to itself, in which, in a data structure called EDID, performance (including information related t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/765G09G5/00G06F13/14G06F13/38G11B20/10H04N7/173H04N21/435H04N21/436
Inventor 森山英一岩本清孝
Owner PANASONIC CORP