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Video data processing device

A technology for video data and processing devices, applied in the field of video data processing devices, can solve the problems of no image display on the display, intermittent display, long time consumption, etc.

Inactive Publication Date: 2011-09-21
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] But after cutting off the high-speed channel connection between display 10 and video data processing device 20, it is necessary to establish a high-speed channel connection between display 10 and video data processing device 30. On the one hand, multiple interactions are required to realize physical connection, logical connection and resource connection. On the other hand, for the wireless communication of some video data processing devices, the physical connection is highly sensitive to direction (that is, has high directivity), and each connection must be physically redirected, which takes a long time
Therefore, based on the invention described in Patent Document 1, when video data is transmitted in a wireless communication system with a limited frequency band, there will inevitably be a display gap for a period of time, that is, there will be no image display on the display.

Method used

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no. 1 Embodiment approach

[0042] image 3 It is a diagram showing the configuration of the video data processing device 100 according to the first embodiment. Such as image 3 As shown, the video data processing device 100 includes: a video input unit 101 , a processing unit 102 , a transmission unit 103 and a controller 104 . The transmission unit 103 has a high-speed path unit (HRP) 103A and a low-speed path unit (LRP) 103B, and these two units can perform data transmission independently of each other. Moreover, the low-speed channel unit 103B is connected to the processing unit 102 .

[0043] Next, the processing flow of the video data processing device 100 according to the first embodiment will be described.

[0044] First, the first coded video data B is received from the video input section 101 of the video data processing device 100 . In addition, the low-speed channel unit 103B of the transmission unit 103 is used as an input channel, and the second coded video data A is received from an ex...

no. 2 Embodiment approach

[0049] Figure 4 It is a diagram showing the configuration of the video data processing device 200 according to the second embodiment. The video data processing device 200 according to the second embodiment is the same as the video data processing device 100 according to the first embodiment except that a selection section 202 and a decoding section 203 are provided instead of the processing section 102 .

[0050] that is, image 3 As shown, the video data processing device 200 includes: a video input unit 201 , a selection unit 202 , a decoding unit 203 , a transmission unit 204 and a controller 205 . The transmission unit 204 has a high-speed path unit (HRP) 204A and a low-speed path unit (LRP) 204B, and the two units can perform data transmission independently of each other. Furthermore, the low-speed channel unit 204B of the transmission unit 204 is connected to the selection unit 202 .

[0051] Next, the processing flow of the video data processing device 200 according...

no. 3 Embodiment approach

[0057] Figure 5 It is a diagram showing the configuration of the video data processing device 300 according to the third embodiment. Video data processing device 300 according to the third embodiment is the same as video data processing device 100 according to the first embodiment except that decoding units 302A and 302B and selecting unit 303 are provided instead of processing unit 102 .

[0058] that is, Figure 5 As shown, the video data processing device 300 includes: a video input unit 301 , decoding units 302A, 302B, a selection unit 303 , a transmission unit 304 and a controller 305 . The transmission unit 304 has a high-speed path unit (HRP) 304A and a low-speed path unit (LRP) 304B, and the two units can perform data transmission independently of each other. In addition, the low-speed path unit 304B of the transmission unit 304 is connected to the decoding unit 302B.

[0059] Next, the processing flow of the video data processing device 300 according to the third ...

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Abstract

The invention discloses a video data processing device, which is a video data processing device with a transmission unit, wherein electric wave on a frequency band only provided with limited high-speed channels is used in the transmission unit; original video data are wirelessly transmitted to a video display device; the video data processing device is provided with a processing unit; and the processing unit is used for decoding any one of first coded video data and second coded video data received from the outside, and outputting the decoded original video data to the transmission unit.

Description

technical field [0001] The present invention relates to a video data processing device. Background technique [0002] In recent years, along with the development of wireless transmission technology, a video data processing device equipped with a transmission unit is proposed, which uses radio waves on a frequency band with only a limited number of high-speed channels to wirelessly transmit video raw data to a video display device ( Video raw data) (see Patent Document 1). [0003] For example, in the prior art mentioned above, such as figure 1 As shown, the video data processing devices 20 and 30 of DVD, STB (TV set-top box) etc. wirelessly transmit respective uncompressed data (such as sound, image signal, etc.) to the display 10 . Here, the wireless transmission is performed at a high rate (for example, 3 Gbps or higher) by establishing highway connections between the video data processing devices 20 and 30 and the display 10 . [0004] However, due to international res...

Claims

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Application Information

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IPC IPC(8): H04N5/765H04N7/26
Inventor 藤井由纪夫东嶋重树顾锦华
Owner HITACHI LTD
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