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An encoding device with signal real time monitoring function

An encoding device and real-time monitoring technology, which is applied in digital video signal modification, pulse modulation TV signal transmission, image communication, etc., can solve the problems of increasing the complexity of system equipment, adding monitoring equipment, and the inconvenience of encoder monitoring. Equipment complexity, reduce use cost, achieve convenient effect

Inactive Publication Date: 2008-04-30
CENT ACADEME OF SVA GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method not only needs to increase the monitoring equipment, which increases the complexity of the system equipment, but also brings great inconvenience to the monitoring of the encoder.

Method used

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  • An encoding device with signal real time monitoring function

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Effect test

Embodiment 1

[0018] The video decoding module decodes the code stream output by the encoding implementation module into a digital YUV signal and sends it to the image size reduction module; the image size reduction module removes 8 pixels from the left and right sides of the original 720×576 large-scale image in the width direction, and then Take 4:1 equal interval down-sampling, directly perform 4:1 equal interval down-sampling in the height direction, reduce it into a small-sized image of 176×144, and transmit the signal to the image frame rate reduction module; the image frame rate reduction module converts the 25fps ( PAL system) high frame rate image, through the equal interval extraction of two frames to keep one frame and reduce it to 9fps low frame rate image, and then output to the display.

Embodiment 2

[0020] The video decoding module decodes the code stream output by the encoding implementation module into a digital YUV signal and sends it to the image frame rate reduction module; the image frame rate reduction module saves a frame with a high frame rate of 29.97fps (NTSC) by two frames at intervals The equal interval extraction reduces the image to 10fps low frame rate, and transmits the signal to the image size reduction module; the image size reduction module converts the original 720×480 large-size image, the width direction and the height direction respectively through 8:1 equal intervals The sampling method is reduced to a small size image of 90×60, and then output to the display.

[0021] The code stream output by the encoding realization module can be displayed in real time on the monitoring window of the display after being processed by the signal monitoring and processing module, so that it is convenient to detect whether the encoder is working normally.

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Abstract

The invention provides a coding device with signal real-time monitoring function. The device comprises a signal capture card, a code implementation module, and a signal monitoring processing module. The signal monitoring processing module decodes the output from the code implementation module, and performs the treatment of minification and frame rate reduction. Finally, the output signal from the signal monitoring processing module is accessed to a display of a coder control mainframe. Therefore, the operator can judge whether the output signal of the coder is correct or wrong by the observation through a small window of the display. The invention can reduce the complexity of system application and the cost as well, and is convenient to operate.

Description

technical field [0001] The invention relates to a digital audio and video encoding device, in particular to an encoding device with a real-time signal monitoring function. Background technique [0002] The encoding device is a device that encodes and compresses the initial data and source of digital audio and video, that is, various input signals input by the acquisition card, such as: composite video signal (composite), serial digital interface (SDI) and S terminal input (S-Video) and other encoded signals into code streams that conform to source standards such as Mpeg2, H.264 / MPEG-4 AVC or AVS. When the encoder is working, in order to ensure the correctness and validity of the receiving terminal signal, it is often necessary to monitor whether the encoder is working normally at the signal transmitting end and whether the encoder has a predetermined output signal. At present, the usual practice is to connect the output signal of the encoder to a terminal device capable of ...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N7/52H04N19/00
Inventor 许昌满
Owner CENT ACADEME OF SVA GROUP
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