ZC0302 Просмотр технического описания (PDF) - Unspecified

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ZC0302

VGA & CIF USB PC Camera Controller

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2. Architecture

2.1. ZC0302 Block Diagram

EEPROM

EEPROM

Interface

ZC0302

VGA & CIF USB PC Camera Controller

MIC

Audio

Interface

System Controller

PC

HOST

ZC0302

FIGURE 2 BLOCK DIAGRAM OF ZC0302

Figure 2 shows the block diagram of ZC0302. The ISP block receives RGB raw data from CMOS image sensor

interface and performs various image processing tasks such as white balance, color correction, gamma correction,

histogram equalization and so on. The Sub-sample & Raster block handles the input image data scaling and

converts input image data to 8x8 block data format required by DCT module. The JPEG Encoder block compresses

the image data from ISP block into JPEG format data. The compressed image data is then transferred to PC host

via USB Device Controller (UDC) block for display.

The Audio Interface takes the audio input in mono 16-bit PCM format, and then transfers it to PC Host through the

audio streaming pipe in UDC.

2.2. CMOS Image Sensor Interfaces

Support sensors from most CMOS image sensor vendors including Agilent, Hynix, IC Media, TASC, PixArt,

Photobit, OmniVision, and Century

9bit/8bit camera input interface

5

Mar. 2002

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