Felix J Houvig

US Patent:

57087016, Jan 13, 1998

Filed:

Jul 17, 1995

Appl. No.:

8/503190

Inventors:

Felix Houvig - Wayne PA
Chandrakant Bhailalbhai Patel - Hopewell NJ

Assignee:

Elcom Technologies Corporation - Malvern PA

International Classification:

H04M 160
H04M 900
H04M 1104

US Classification:

379173

Abstract:

A power line telephone communications system having an ON HOOK digital voiceband messaging feature by which selected information contained in an incoming call to a telephone is received prior tc the telephone being lifted off its hook. The incoming ring signals, ON HOOK digital voiceband messaging and information signals are conducted by a base unit to the power line for transmission to an extension unit to which a telephone is connected.

US Patent:

44173032, Nov 22, 1983

Filed:

Feb 25, 1981

Appl. No.:

6/237835

Inventors:

Simon Korowitz - Hatfield PA
Kurt R. Leichter - King of Prussia PA
Felix J. Houvig - Wayne PA

Assignee:

Leeds & Northrup Company - North Wales PA

International Classification:

G06F 1516

US Classification:

364200

Abstract:

A bus structure for the interconnection between a data bus capable of transferring a plurality of words and a local bus which can carry only one word. This structure includes latches for storing the plurality of words for simultaneous transfer over the data bus or for sequential transfer over the local bus as required. Control logic operates to perform the necessary control over this interconnection to effect the required operation.

US Patent:

45204888, May 28, 1985

Filed:

Nov 2, 1981

Appl. No.:

6/317083

Inventors:

Felix J. Houvig - Wayne PA
Ronald H. Rowlands - Collegeville PA

Assignee:

Honeywell, Inc. - Minneapolis MN

International Classification:

H04B 360

US Classification:

375 5

Abstract:

A communication system for communicating analog and digital data with a process variable, e. g. , pressure, transmitter over the two wires which supply power to the transmitter apparatus. The digital communication operation is half-duplex, bit serial transmission and is represented by the currents and voltages in the transmitter communication loop which are selectively introduced between process variable analog data transmissions of 4-20 ma. A plurality of bit cells are provided for each data word or byte between a start bit and a parity bit cell. Following the completion of transmission of the digital data, a predetermined time period is introduced to enable the resumption of transmission of process variable data. Multiple byte digital data transmission can also be effected between process variable analog transmissions by having a byte spacing less than the predetermined time period preceeding the 4-20 ma process variable transmissions. Thus, this method of communication provides for selective alternate digital and analog communications with the digital communications being achieved by variations of the current in the communication loop between the 4-20 ma limits, while the analog data is represented by a corresponding direct current magnitude between the 4-20 ma limits.

US Patent:

43039847, Dec 1, 1981

Filed:

Dec 14, 1979

Appl. No.:

6/104590

Inventors:

Felix J. Houvig - Wayne PA

Assignee:

Honeywell Inc. - Minneapolis MN

International Classification:

G06F 1520

US Classification:

364571

Abstract:

A sensor correction circuit uses a programmable read only memory (PROM) for storing characterizing information for an associated sensor or transducer. The information is stored in the 1. times. 2048 bit configuration. The programmable read-only memory (PROM) has its parallel outputs connected to corresponding inputs of a 2048 bit shift register. The programmable read-only memory and the shift register are located in an electronic circuit housing, along with a power supply and sensor signal handling electronics, attached to the sensor structure to form an integral package therewith. An isolation interface is mounted on the housing and is connected between the circuit within the housing and an external data processing and interrogating system which may include a microprocessor. The programmable read-only memory is used to store sensor characterizing information for providing sensor correction data to the microprocessor controlled data processing system and to supply this information upon demand by the data processing system to the shift register for read-out through the isolation interface to the interrogating data processing system. The isolation interface may include signal isolators used to transmit the signals for controlling the programmable read-only memory and the shift register and for supplying power to the power supply to energize the shift register and the sensor signal handling electronics.