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This article describes a selectable multiple port scanning array which solves the problems of limited applicability of a multiple port scanner and data formatting of a multiple port scanner.
English (United States)
This text was extracted from a PDF file.
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This is the abbreviated version, containing approximately
61% of the total text.
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Selectable Multiple Port Scanning Array
This article describes a selectable multiple port scanning array which solves
the problems of limited applicability of a multiple port scanner and data formatting
of a multiple port scanner.
This invention pertains to, but is not limited to, a time delay and integration
scanning array 10 which converts the incident light into charge which is then
collected and transferred parallel to an output register 11. In the output register
11 the charge is moved serially to the output amplifiers 12, 13, 14 and 15 where
the charge is converted into a voltage.
In prior-art devices a single output amplifier was used with the entire output
register, and thus a minimum time necessary to access one piece of information
was the sum of the amplifier reset time, the amplifier settling time and the data
acquisition time which typically is the conversion time for an analog-to-digital
converter, but could be the setting time for a high speed sample and hold circuit.
The present invention comprises the addition of an extension 11a on the
output of register 11 so that the information is transferred serially from the output
register 11 into the extension 11a and then can be fed out through the multiple
ports 12, 13, 14 and 15 either serially or in parallel. If desired, only one or more
of these multiple output ports need be selected for the information to be
transmitted out of the system. For example, if only port, say output port 12, were