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CX3: CSI-2 to USB 3.0 Solution for HD Video Slide 2

Here is a list of terms that are used in this presentation: Bandwidth is defined as resolution × frame rate × color depth. For common video standards, bandwidth requirement can be easily calculated as such. For example: 1080p video requires 1.5 Gbps, 720p requires 664 Mbps and VGA requires 147 Mbps. Compression is the act of applying mathematical algorithm to a high-resolution image to reduce the bandwidth requirement for transferring that image. To compress an image requires a compression engine that is a dedicated hardware such as FPGA or ASIC. But the resulting image quality is compromised due to compression artifacts introduced during the process. CSI-2 (camera serial interface version 2.0) is a specification that defines a standard serial interface between an image sensor and an image processor. CSI-2 has gained significant popularity due to large adoption in consumer applications such as the embedded webcam in PCs and smart phones. The Image signal processing (ISP) is the process of converting raw pixels into standard video data format. ISP is hardware integrated into an image sensor or an image processor. It can also be implemented as software running on a host system. The Mobile Industry Processor Interface (MIPI) is the industry body that governs the CSI-2 specification.

PTM Published on: 2015-03-23