Texas Instruments MC-1000WU-20A manual CCD Array

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The CCD Array

5.1 The CCD Array

The TC215 is a full-frame charge-coupled device (CCD) image sensor that provides very-high-resolution image acquisition for image processing applications such as robotics vision, medical x-ray analysis, and metrology.

The image format of the sensor measures 12.0 mm horizontally by 12.2 mm vertically; the image area diagonal is 17.2 mm. The image area contains 1017 active lines with 1000 active pixels per line. Six additional dark reference lines give a total of 1024 lines in the image area, and twenty-four additional dark reference pixels per line give a total of 1024 pixels per horizontal line. The pixels are 12 mm square and form precise rows and columns, horizontally and vertically, allowing precise image geometry measurements.

The CCD is a solid-state device, which requires no external adjustment or regular maintenance. Unlike a conventional pickup tube, there are no electromagnetic alignment routines to be observed because there is no electron beam involved.

The full-frame image sensor should be used with a shutter or with strobed illumination to prevent smearing of the image during readout. After image capture (integration time), the readout is accomplished by transferring the charge one line at a time into two serial registers, each of which contains 512 data elements and 12 dummy elements. The typical pixel rate is 20 mega-pixels per second using both serial registers. Operating the TC215 at the typical data rate of one field per frame generates video at a continuous 15 frames per second in the TV mode of operation.

5-2

CCD Circuit Description

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Contents MC-1000WU-20A High-Resolution Camera Users Guide Important Notice Read This First About This ManualTrademarks If You Need Assistance Page Contents Figures TablesGeneral Description TopicFeatures ±1. MC-1000WU-20A Interface Options and Mode Selection IntroductionPhysical Description Equipment Supplied Equipment Required But Not Supplied Specifications Specifications ±1. Specifications±1. Specifications Interface Circuit ±1. Input Interface Circuit of VD, HD, and MCKInstallation ±1. Auto Iris Connector Pin Assignment Interface Assignments±4. AUX Connector Pin Assignment Installation Procedure Mounting the CameraPost-Installation Test Installation Operation General Operating Procedures Turn-On ProcedureFigure B±1. TV Internal Mode External Operation See Appendix BOperation CCD Circuit Description CCD Array Cleaning Instructions Cleaning Functional Block Diagram Functional Block Diagram Figure A±1. Functional Block DiagramTiming Diagrams Timing Diagrams Figure B±1.TV Internal Mode see NoteFigure B±2.TV External Mode Figure B±5.Shutter Internal Mode Figure B±6.Shutter External Mode Figure B±8.HD Input Waveform Important Notice