Stuart S Cohen

Author:

Stuart E. Cohen

ISBN #:

0804007314

Author:

Stuart B. Cohen

ISBN #:

0250404443

Author:

Stuart Cohen

ISBN #:

0060392274

Author:

Stuart Cohen

ISBN #:

0669027219

Author:

Stuart Cohen

ISBN #:

0671618075

Author:

Stuart Cohen

ISBN #:

0799211850

Author:

Stuart Cohen

ISBN #:

0691053618

Author:

Stuart Cohen

ISBN #:

0823076547

US Patent:

44882939, Dec 11, 1984

Filed:

Dec 23, 1981

Appl. No.:

6/334006

Inventors:

Robert H. Haussmann - Wayne NJ
Stuart B. Cohen - Cedar Grove NJ
Arthur L. Bandini - Harrington Park NJ

Assignee:

International Telephone and Telegraph Corporation - New York NY

International Classification:

H04J 300

US Classification:

370 84

Abstract:

An asynchronous digital TDM multiplexer-demultiplexer combination at one communication terminal is capable of multiplexing N asynchronous input data signals having a random mixture of different bit rates into a transmitted synchronous data stream having a predetermined fixed data format and a given bit rate greater than the sum of the rates of the different rates and to demultiplex N asynchronous output data signals having the same random mixture of the different bit rates from a received synchronous data stream having the data format and the given bit rate, where N is an integer greater than 1. Each of the N channel printed circuit board plug-in receptacles, coupled to a different one of the N input data signals and a different one of N outputs each for a different one of the N output data signals, has plugged therein a selected one of no printed circuit boards, a digital data channel printed circuit board and an FSK channel printed circuit board to process a mixture of digital data signals, teletype signals and FSK signals in the N input data signals and the received data stream, with the mixture of signals being in any random order and mix and the digital channel printed circuit boards and the FSK channel printed circuit boards being plugged in the N receptacles in any random order and mix. The multiplexing and demultiplexing frame synchronization and automatic channel assignment is controlled by a programmable common controller so that the data bits of each of the N input data signals are distributed throughout the time slots of the transmitted and received data stream with equal spacing.

US Patent:

44714807, Sep 11, 1984

Filed:

Dec 23, 1981

Appl. No.:

6/334001

Inventors:

Robert H. Haussmann - Wayne NJ
Stuart B. Cohen - Cedar Grove NJ
Arthur L. Bandini - Harrington Park NJ

Assignee:

International Telephone and Telegraph Corporation - New York NY

International Classification:

H04J 300

US Classification:

370 84

Abstract:

A common controller in the form of a programmed digital sequencer executes a series of instructions to control multiplexing-demultiplexing overhead channel format generation, frame synchronization stuff-destuff operation and automatic channel assignment in a digital TDM multiplexer-demultiplexer combination at one communication terminal to enable multiplexing N input data signals each having a predetermined bit rate into a transmitted synchronous data stream having a predetermined fixed data format and a given bit rate greater than the sum of the predetermined bit rates and to demultiplex N output data signals each having the predetermined bit rate from a received synchronous data stream having the data format and the given bit rate, where N is an integer greater than one. The disclosed common controller can be used with synchronous input and output data signals or for asynchronous input and output data signals wherein the asynchronous input and output data signals are distributed throughout the fixed data format in the time slots thereof evenly due to the automatic channel assignment. The programmed digital sequencer includes program memory means and support logic means coupled to the memory means to supply control signals in response to a plurality of digital codes present in the program memory means for multiplexing, demultiplexing, overhead channel format generation frame synchronization, stuff-destuff control and automatic channel assignment.

US Patent:

40864367, Apr 25, 1978

Filed:

Aug 4, 1976

Appl. No.:

5/711766

Inventors:

Stuart Barry Cohen - Nutley NJ
James Monroe Clark - Cedar Grove NJ
Arthur Howard Magnus - Succasunna NJ

Assignee:

International Telephone and Telegraph Corporation - Nutley NJ

International Classification:

H04J 304

US Classification:

179 15AF

Abstract:

Each of first N flip-flop stages, where N is an integer greater than one, has steered thereto an appropriate one of N bits of the data to be transmitted by a transmit write counter and a first N stage decoder under control of a transmit write clock. A transmit read counter under control of a transmit read clock steers the stored bits to a transmit data bus by means of a first multiplexer and first logic circuitry under control of a transmit read counter and a transmit channel timing signal. Each of second N flip-flop stages has steered thereto an appropriate one of N bits of received data by a receive write counter and a second N stage decoder under control of a receive write clock. A receive read counter under control of a receive read clock steers the stored bits to a receive data bus by means of a second multiplexer and second logic circuitry under control of the receive read counter.

US Patent:

47363592, Apr 5, 1988

Filed:

May 6, 1986

Appl. No.:

6/860374

Inventors:

Stuart B. Cohen - Cedar Grove NJ
Robert Goeb - Spotswood NJ
Ernest J. Oliveira - Livingston NJ

Assignee:

ITT Defense Communications , a division of ITT Corporation - Nutley NJ

International Classification:

H04B 900

US Classification:

370 3

Abstract:

A single fiber optical communication system (SFOCS) allows, in many operational scenarios, one-person deployment and recovery of optical links. Wavelength division multiplexing (WDM) is employed to provide full-duplex, bi-directional transmission. An optical subsystem achieves the wavelength multiplexing and demultiplexing while at the same time allowing for an unpolarized terminal design. Selection by the system of the WDM operating wavelengths between a pair of SFOCS terminals is performed without operator intervention.

US Patent:

48471534, Jul 11, 1989

Filed:

Mar 28, 1988

Appl. No.:

7/173838

Inventors:

Ulrich R. Grigo - Kempen, DE
Stuart L. Cohen - Ardsley NY

Assignee:

Mobay Corporation - Pittsburgh PA

International Classification:

B32B 2728

US Classification:

428412

Abstract:

The invention concerns thermoplastic molding compositions comprising a blend of a polycarbonate resin, a conjugated diene graft polymer and an impact modifying agent characterized in that said conjugated diene graft polymer contains at least some. alpha. -methyl styrene which compositions combine improved impact strength and good HDT values.

US Patent:

39611361, Jun 1, 1976

Filed:

Apr 25, 1975

Appl. No.:

5/571677

Inventors:

Stuart Barry Cohen - Nutley NJ
James Monroe Clark - Cedar Grove NJ
Arthur Howard Magnus - Succasunna NJ

Assignee:

International Telephone and Telegraph Corporation - Nutley NJ

International Classification:

H04L 2718

US Classification:

178 67

Abstract:

A transmit phase locked loop receives data to be transmitted having a bit rate equal to a first given one of a predetermined number of different bit rates. A diphase demodulator responds to the transmit phase locked loop and the data to be transmitted to provide output data for transmission. A receive write timing signal and a receive read timing signal is coupled to a receive phase locked loop to compare the phase relation of the two timing signals. A diphase modulator responds to received data having a bit rate equal to a second given one of the predetermined number of different bit rates and a clock signal provided by the receive phase locked loop to provide output data for utilization. The first given one of different bit rates and the second given one of different bit rates may have equal or different bit rates.

US Patent:

39820777, Sep 21, 1976

Filed:

Apr 7, 1975

Appl. No.:

5/565905

Inventors:

James Monroe Clark - Cedar Grove NJ
Stuart Barry Cohen - Nutley NJ
Arthur Howard Magnus - Succasunna NJ

Assignee:

International Telephone and Telegraph Corporation - Nutley NJ

International Classification:

H04J 304

US Classification:

179 15BV

Abstract:

An asynchronous digital time division multiplexer and demultiplexer combination at one communication terminal is disclosed that will multiplex first N asynchronous source data signals having a first mixture of different bit rates into a transmitted synchronous data stream having a predetermined fixed data format and a given bit rate greater than the total of the bit rates of the source data and to demultiplex second N asynchronous source data signals having a second mixture of different bit rates from a received synchronous data stream having the predetermined fixed data format and the given bit rate. The combination includes an automatic channel assignment circuit to assign channels of the two data streams to the asynchronous source data signals in a manner to minimize temporary data memory regardless of the number of different bit rates by assigning the data signals to channels of the associated one of the two data streams so that the bits of each of the data signals tend to have equal spacing throughout the bits of the associated one of the two data streams. The channel assignment control circuit also includes a means to automatically indicate when the total of the mixture of bit rates has exceeded an allowable maximum.