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SIMPLE ATTACHMENT TO REVERSE THE SCAN-LINE ORIENTATION FOR SENSOR ELECTRONICS PRINTED WIRE BOARD ASSEMBLY

IP.com Disclosure Number: IPCOM000024773D
Original Publication Date: 1982-Feb-28
Included in the Prior Art Database: 2004-Apr-03
Document File: 2 page(s) / 55K

Publishing Venue

Xerox Disclosure Journal

Abstract

In copying or facsimile systems that use CCD scanners, the resolution may be doubled by using two CCD arrays, end to end. A peoblem arises in that some systems scan from the bottom to the top of the page, while others scan from top to bottom.

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XEROX DISCLOSURE JOURNAL

SIMPLE ATTACHMENT TO REVERSE THE SCAN-LINE ORIENTATION FOR SENSOR ELECTRONICS PRINTED WIRE BOARD ASSEMBLY
James E. Handy

Proposed Classification
U.S. C1. 250/578

Int. C1. HOlj 40/14

In copying or facsimile systems that use CCD scanners, the resolution may be doubled by using two CCD arrays, end to end. A peoblem arises in that some systems scan from the bottom to the top of the page, while others scan from top to bottom.

In order to use the same CCDs and electronics for both applications without designing two separate circuit boards, a small circuit board is sandwiched between the CCDs and the electronic printed wire board assembly. This circuit board will convert the signal orientation from a "bottom to top" scanline orientation to a Yop to bottom" scanline orientation. This reversal attachment can be fabricated as a three-layer board. Compared with a reversing set of cables, a board controls stray capacitances and provides the noise immunity required to drive CCDs at an 8 MHz pixel rate. Other advantages of this simple attachment are that it costs less to manufacture and assemble than the alternatives.

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    XEROX DISCLOSURE JOURNAL Volume 7 Number 1 January/February 1982

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