Charge coupled device based inspection system and method
First Claim
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1. In an inspection system including a charge coupled device (CCD) having pixels arranged in horizontal rows and vertical columns and a storage device for storing digital information transferred from said CCD;
- an improvement for transferring data from said CCD to said storage device comprising;
memory means for storing the number of horizontal rows of pixels and the number of vertical columns of pixels of said CCD;
first means for selectively setting said number of rows of pixels into said memory means;
second means for selectively setting said number of columns of pixels into said memory means; and
waveform generator means responsive to said memory means for transferring data from said CCD to said storage device in accordance with the numbers of rows and columns set in said memory means whereby different sizes of CCDs can be used in said system by changing the settings on said first and second means for setting.
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Abstract
An inspection system utilizing a CCD includes a CCD data transfer generator which allows the changing of the CCD without redesigning the system. The numbers of horizontal rows and vertical columns of pixels of the CCD are set into a digital memory and into a waveform generator. The waveform generator provides horizontal scanning and vertical scanning waveforms in accordance with the row and column settings whereby the CCD can be replaced with a different size CCD and new numbers set into the memory and waveform generator.
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Citations
11 Claims
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1. In an inspection system including a charge coupled device (CCD) having pixels arranged in horizontal rows and vertical columns and a storage device for storing digital information transferred from said CCD;
- an improvement for transferring data from said CCD to said storage device comprising;
memory means for storing the number of horizontal rows of pixels and the number of vertical columns of pixels of said CCD; first means for selectively setting said number of rows of pixels into said memory means; second means for selectively setting said number of columns of pixels into said memory means; and waveform generator means responsive to said memory means for transferring data from said CCD to said storage device in accordance with the numbers of rows and columns set in said memory means whereby different sizes of CCDs can be used in said system by changing the settings on said first and second means for setting. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- an improvement for transferring data from said CCD to said storage device comprising;
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9. A method of transferring analog data to a digital storage device from a charge coupled device (CCD) having X horizontal rows of pixels and Y vertical columns of pixels wherein X and Y can be changed when said CCD is changed comprising the steps of:
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setting said number of rows into a first counter and providing the output of said first counter to a control memory; setting said number of columns into a second counter and providing the output of said second counter to said control memory; coupling said control memory to a waveform generator to select horizontal and vertical data transfer modes to selectively make one horizontal or one vertical transfer of data in said CCD; and triggering said control memory with said waveform generator at the end of each data transfer to select another data transfer. - View Dependent Claims (10, 11)
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Specification