Alexander C Ross

US Patent:

43957650, Jul 26, 1983

Filed:

Apr 23, 1981

Appl. No.:

6/256697

Inventors:

Bryan S. Moffitt - Eatontown NJ
Alexander R. Ross - Allentown PA

Assignee:

Bell Telephone Laboratories, Incorporated - Murray Hill NJ

International Classification:

G11C 700

US Classification:

365174

Abstract:

In a memory array, dual port capability is achieved by an arrangement of the memory cells such that for each cycle of the memory operation two accesses may be performed. This result is achieved by taking advantage of the bit line precharging interval. A second bit line accessing pair is added to each memory element, and each cycle is split so that when one bit line is in the accessing mode, the other bit line is in the precharging mode. Using this technique the speed of the memory is effectively doubled.

US Patent:

43822959, May 3, 1983

Filed:

Apr 23, 1981

Appl. No.:

6/256970

Inventors:

Bryan S. Moffitt - Eatontown NJ
Alexander R. Ross - Allentown PA

Assignee:

Bell Telephone Laboratories, Incorporated - Murray Hill NJ

International Classification:

H04M 356
G06F 700
H04Q 1104

US Classification:

370 68

Abstract:

A time slot interchanger is disclosed for selecting and buffering digital signals between buses. The arrangement is particularly useful in forming conferences in a distributed digital time division system. In one embodiment, a clock is used to generate time signals corresponding to time slots of the first bus. These signals are sequentially provided to an associative memory and when a match occurs between the provided signal and a priorly stored time slot identity, an enable signal is provided. The enable signal has a time identity with a first bus time slot and a physical identity with a particular second bus time slot. The enable signal is used to gate into a second memory the time slot signal associated with the time identity at the storage location in the second memory corresponding with the particular time slot of the second bus associated with the enable signal. The signal samples are then sequentially removed from the second memory.

US Patent:

44975740, Feb 5, 1985

Filed:

Jun 13, 1983

Appl. No.:

6/503818

Inventors:

Joseph Tarsia - Cedar Knolls NJ
Alexander S. Ross - Cedar Knolls NJ
Marina Gertsek - Cedar Knolls NJ

Assignee:

Kenro Corporation - NJ

International Classification:

G03B 2762

US Classification:

355 76

Abstract:

In a color-slide duplicator having a housing containing a light source which illuminates an opening in a housing wall, and a support for a camera above the housing for photographic reproduction of a slide to be duplicated; an assembly for supporting the slide comprises a carrier plate releasably and adjustably secured by magnets to the housing wall so as to span the illuminated opening which registers, at least in part, with an aperture in the carrier plate, and first and second parallel guide bars having undercut, beveled edges facing toward each other and being arranged on the carrier plate at opposite sides of the aperture in the latter, with one of the guide bars being movable laterally and resiliently urged in the direction toward the other guide bar, such guide bars being included in a quick-release mechanism by which the slide to be duplicated is positioned and held against the carrier plate over the aperture therein. In the case of a slide having a rigid frame, opposing side edges of the frame can be directly engaged by the beveled guide bar edges. When the slide is an unmounted flexible film, a bearing and masking plate with an aperture registering, at least in part, with the carrier plate aperture is engaged, at opposing side edges, by the beveled guide bar edges to be urged thereby against the carrier plate with the flexible film held flat between the carrier and bearing plates.