High-definition serial digital interface data converting method and device
A digital serial interface and data technology, applied in the field of high-definition digital serial interface data conversion methods and devices, can solve problems such as reducing video quality, and achieve the effects of small delay, rich solutions, and improved system compatibility
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Embodiment 1
[0050] figure 2 A flow of a high-definition digital serial interface data conversion method provided by the first embodiment of the present invention is shown, and only parts related to the embodiment of the present invention are shown for convenience of description.
[0051] The embodiment of the present invention describes the technical solution of the present invention from the side where parallel 4:2:2 YCbCr video data is converted into parallel 4:2:0 YCbCr video data, including:
[0052] Step S201, writing the upper 8 bits of the luminance Y data in the parallel 4:2:2 YCbCr video data into the high-order luminance cache, and writing the lower 2 bits into the low-order luminance cache;
[0053] Step S202, delete the chroma Cb data of half the number of lines in the YCbCr video data, and write the upper 8 bits of the chroma Cr data into the high-order chroma cache, and write the lower 2-bit data into the low-order chroma buffer, and write The other half of the chroma Cr d...
Embodiment 2
[0064] image 3 A high-definition digital serial interface data conversion method provided by the second embodiment of the present invention is shown, and only parts related to the embodiment of the present invention are shown for convenience of description.
[0065] Step S301, perform line load balancing on the connected high-definition digital serial interface data, and convert it into a pair of high-speed differential digital signals;
[0066] Step S302, performing serial-to-parallel conversion on the differential digital signal to obtain parallel 4:2:2 YCbCr video data, and extracting a clock signal and a corresponding synchronization information status indication therefrom.
[0067] The above three steps are the pre-order steps for realizing data conversion, and the purpose is to obtain parallel 4:2:2 YCbCr video data with invalid data removed. Firstly, the HD-SDI signal transmitted by the high-definition video camera is load-balanced to convert it into a pair of high-sp...
Embodiment 3
[0079] Figure 5 The flow of a high-definition digital serial interface data conversion method provided by the third embodiment of the present invention is shown, and only the parts related to the embodiment of the present invention are shown for convenience of description.
[0080] Embodiments of the invention describe the technical solution of the present invention from the side where parallel 4:2:0 YCbCr video data is converted into parallel 4:2:2 YCbCr video data, including:
[0081] Step S501, write the upper 8 bits of the luminance Y data in the parallel 4:2:0 YCbCr video data into the second high-order luminance buffer, write the lower 2 bits into the second low-order luminance buffer, and write the chrominance Cb data The upper 8 bits of the chroma Cr data are written into the second high-order chroma buffer, and the lower 2 bits are written into the second low-order chroma buffer.
[0082] Need to obtain the YCbCr video data of parallel 4:2:0 before realizing this st...
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Abstract
Description
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