Leonard Barba Zuckerman Deceased2444 Seebode Ct, North Bellmore, NY 11710

4290086, Sep 15, 1981

Jun 18, 1980

6/160776

David R. Spencer - Melville NY
Leonard Zuckerman - Dix Hills NY

Litton Systems, Inc. - Melville NY

H04N 110

358293

In an optical scanning system the position of a scanning beam is determined by a grating across which the beam is traced and then retraced to start again. The first grate is detected by first filtering the relatively low frequency input signals generated as the beam traces across the grating and the relatively high frequency signals generated as the beam retraces across the grating. The filter passes the low frequency signals, excludes the high frequency signals and accentuates the changes between high and low frequency signals which occur as the beam reaches either end of the grating. By applying the filtered signal to a gating arrangement, it is possible to eliminate one plurality of the signals generated as the beam falls upon the end of the grating. The remaining plurality of signals is further applied to a gate which detects the first grate signal to the exclusion of all others for providing an accurate indication of the start of scan of the optical system.

3958104, May 18, 1976

Aug 18, 1975

5/605496

Leonard Zuckerman - Whitestone NY

Servo Corporation of America - Hicksville NY

G06K 710
B01D 2324
G11B 2504

235 6111E

A system is provided for time multiplexing a plurality of optical scanners. The system includes at least two electro-optical detection systems, each including means for receiving an image of an object and producing an electrical signal output in response to the sensing of an image, mirror means movable to scan a first location and reflect an image of any object at the first location to the first detection system and to scan a second location to reflect an image of any object at the second location to the second detection system and means for moving the mirror to continuously scan the first and second locations. The system further includes means for processing the electrical signal outputs of the detection system and switch means for alternately connecting the outputs of the first and second detection system to the processing means.

4410270, Oct 18, 1983

Apr 20, 1981

6/255589

Leonard Zuckerman - Dix Hills NY

Litton Systems, Inc. - Hauppauge NY

G01B 1126
H04N 104

356152

An angle position transducer is shown which is utilized within an optical scanning system that projects a rotating beam of light from a single point and reflects that light from a radial reflector back toward the point. The transducer includes a wedge shaped mask which is arranged between a pair of photodetectors mounted to the left and right of the mask. A second mask limits the amount of light which lands upon the photodetectors during the extreme left or right-hand rotation of the light beam. The output of the photodetectors is combined in an add and subtract circuit to produce a linear output signal which indicates the position of the rotating light beam from its far right to its far left-hand rotational position.

4449046, May 15, 1984

Mar 12, 1982

6/357500

Leonard Zuckerman - Dix Hills NY
Colin Taddonio - Port Jefferson Station NY

Litton Systems, Inc. - College Park MD

H01J 4014

250235

A circuit is shown for use within an optical scanning system utilizing at least two scanning beams for scanning a grating and a document. A high frequency reference signal is applied to a counter which also receives the grating signal. The grating signal is delayed by a counter to assure that the grating signal has been synchronized with the reference signal. As the scan across the document hits a reference target, a picture element signal is generated which is also applied to the counter. The counter is enabled upon receipt of a positive going signal from both the reference signal and the picture element reference signal. As the reference signal is a much higher frequency than the picture element signal, any error in misalignment between the grating whose signal is synchronized with the reference signal and the target is eliminated by the high frequency reference signal. A further delay counter within the circuit eliminates errors caused by the width of the target signal. An additional counter is utilized to assure that the scan line signal is terminated at the same point after each successive scan.

3999043, Dec 21, 1976

Jun 2, 1975

5/582758

Charles Reiss - W. Sayville NY
Leonard Zuckerman - Dix Hills NY

Servo Corporation of America - Hicksville NY

G06K 714
H04B 104

235 6111E

A circuit for producing an output pulse of predetermined amplitude and a width equal to the mid amplitude width of an input pulse from an electro-optical label reading system is provided. The present circuit comprises delay line means having a first output terminal and a second output terminal with the signal at the second output terminal being delayed twice the time of the delay at the first terminal. The first output terminal of the delay line is connected to an amplifier operative to double the amplitude of the signal applied thereto. The output of the amplifier is connected to one input of each of first and second comparators with the other input to the comparators respectively connected to the input signal source and the second terminal of the delay line. The output of the comparators is connected to the input to an AND gate with the output from the AND gate providing the desired pulse width information.

4891628, Jan 2, 1990

Dec 29, 1988

7/291528

Leonard Zuckerman - Dix Hills NY

G08B 1902

340582

A matter sensing apparatus includes a piezoelectric transducer, having a face susceptible to matter accretions at a surface for which matter accretion detection is desired. The electrical circuit of the transducer is coupled in the feedback path of an amplifier to establish an oscillator that oscillates at frequencies determined by the resonant frequency of the transducer and the loading on its face. The oscillator signals are converted to binary signals and utilized with binary signals, provided by a thermostat, that a representative of temperatures above or below a selected temperature to provide signals indicative of whether ice or other matter has accredited on the surface.