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INDEPENDENT TRANSFER FOR BILINEAR SENSOR ARRAYS

IP.com Disclosure Number: IPCOM000025756D
Original Publication Date: 1987-Oct-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 59K

Publishing Venue

Xerox Disclosure Journal

Abstract

In standard use, bi-linear sensor array designs clock out data derived at the sensor sites simultaneously from each row. This arrangement creates problems in Y-direction magnification, changing scan speed without changing scan time, and in asynchronous operation of scanning devices incorporating the design. These problems arise out of the fixed spacing between the two rows of sensors.

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XEROX DISCLOSURE JOURNAL

INDEPENDENT TRANSFER FOR Proposed Classification BILINEAR SENSOR ARRAYS U.S. C1.358/213 Pierre A. Lavallee
Ronald G. Matteson
Richard H. Tuhro

Int. C1. H04N 3/14

In standard use, bi-linear sensor array designs clock out data derived at the sensor sites simultaneously from each row. This arrangement creates problems in Y-direction magnification, changing scan speed without changing scan time, and in asynchronous operation of scanning devices incorporating the design. These problems arise out of the fixed spacing between the two rows of sensors.

In accordance with the present proposal, data is transferred independently from each row of the bi-linear sensor. To accomplish the independent transfer, separate transfer gates are provided for each sensor row. Analog storage registers on the chip are eliminated, and a charge dump capability is provided to eliminate charge information accumulated at the sensors during a partial integration time, and to permit re-commencing integration without waiting for a transfer pulse.

By providing for the independent transfer of data from each row of such devices, the timing of data transfer is adjustable, allowing the Y-direction sam ling and scan s eed to be chan ed while leaving integration time

without signal degradation. The system enables magnification, change in scan speed, or asynchronous operation.

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P tered. Off-chip cf igital storage a1 B ows operation in a stopjstart mode

Volume 12 Number 5 Septem...