A real-time deserialization processing method of cmos image sensor data signal
An image sensor and data signal technology, applied in the field of real-time processing of CMOS image sensor output data signals, can solve problems such as long-term overhead, and achieve the effects of low hardware resource overhead, high real-time performance, and simple logic circuit structure
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[0027] The technical principle and specific implementation of the present invention will be further described in detail below.
[0028] Step 1: Generate three clocks with the same phase from the input data bit clock DCLK, namely the bit clock DCLK, the half frame clock DCLK1 and the frame clock DCLK2.
[0029] Clock generation can be realized by using the clock management unit generally provided by FPGA. The bit clock is used for data bit latching, the half-frame clock is used for latching data at twice the frame frequency, and the frame clock is used for latching data at a frame frequency. The frame length depends on the number of quantization bits of the CMOS image sensor. For example, a CMOS sensor with a quantization precision of 12 bits has a data frame length of 12 bits, that is, 6 DCLK cycles. Multiple clocks with the same phase and different frequencies are used to transfer data from the higher frequency data bit clock domain to the lower frequency data frame clock dom...
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