Thomas D Housten

58567429, Jan 5, 1999

Jun 12, 1997

8/873902

Salomon Vulih - Meshanic NJ
Stanley Frank Wietecha - South Bound Brook NJ
John A. Olmstead - Cape May Court House NJ
Thomas D. Housten - Somerville NJ

Harris Corporation - Melbourne FL

G05F 316
G05F 304

323315

A circuit for generating a bandgap voltage that is insensitive to temperature. The circuit includes an amplifier with a feedback loop having a high impedance output current mirror controlled by transistors connected to an output from the amplifier. The current mirror provides proportional currents to a pair of resistors that are connected to inputs to the amplifier, a first input receiving a temperature sensitive voltage from a first of the resistors, and a second input receiving a voltage that is a combination of a temperature sensitive voltage across a second of the resistors and a temperature sensitive offsetting voltage. The second resistor may be tapped to provide a selectable bandgap voltage. A reference voltage for operating the generator may be obtained from a voltage division of supply voltage by two resistors of the same type.

56100930, Mar 11, 1997

Sep 13, 1995

8/527548

Salomon Vulih - Neshanic NJ
George R. Briggs - Princeton NJ
Thomas D. Housten - Somerville NJ

Harris Corporation - Melbourne FL

H01L 218246

437 51

Methods of increasing the number of possible network configurations available during the manufacture of an integrated circuit hybrid balance network containing a fixed number of selectable network configurations in the manufactured network by including a network element selection layer programmable during the manufacturing process. The programming may be accomplished using ROM matrices programmed during or subsequent to the manufacturing process, or alternatively may be accomplished by the programming of the metal masks interconnecting the semiconductor portions of the IC without the necessity for changing the semiconductor masks.

57177368, Feb 10, 1998

Nov 3, 1995

8/552379

Salomon Vulih - Neshanic NJ
Thomas David Housten - Somerville NJ

Harris Corporation - Melbourne FL

H04M 124
H04M 308
H04M 322

379 3

A telephone system coder/decoder (CODEC) having improved access for testing CODEC components and a method of testing a CODEC in which a test signal is not contaminated by passage through CODEC filters. Input test pads are positioned between the receive channel filters and the connection of the receive channel to the hybrid balance network, and an output test pad is positioned between the transmit channel filters and the connection of the transmit channel to the hybrid balance network. Test signals selectively applied to the test pads or to CODEC terminals indicate operation of receive programmable gain section, hybrid balance network frequency response, hybrid balance network echo cancellation, and the transmit buffer, buffer splitter and transmit programmable gain section in the transmit channel. The test signals do not go through the transmit and receive filters.