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Harper J Whitehouse, Robert W Means, Edwin H Wrench Jr, Jeffrey M Speiser, Allan G Weber: TV bandwidth reduction system using a hybrid discrete cosine DPCM. The United States of America represented by the Secretary of the Navy, Richard S Sciascia, Ervin F Johnston, John Stan, April 1, 1980: US04196448 (174 worldwide citation)

An image-compression system, wherein the image consists of a planar array of data points having various brightness levels, comprises a transmitter and a receiver. The transmitter comprises an analog-digital converter, for converting input analog data into digital data. The cosine transform is taken ...


2
John M McCool, Bernard Widrow, James R Zeidler, Robert H Hearn, Douglas M Chabries: Adaptive line enhancer. The United States of America represented by the Secretary of the Navy, Richard S Sciascia, Ervin F Johnston, John Stan, December 9, 1980: US04238746 (98 worldwide citation)

An input signal X(j) is fed directly to the positive port of a summing function and is simultaneously fed through a parallel channel in which it is delayed, and passed through an adaptive linear transversal filter, the output being then subtracted from the instantaneous input signal X(j). The differ ...


3
James M Alsup, Edward C Jelks: Fix-tracking system. The United States of America represented by the Secretary of the Navy, Harvey Fendelman, Thomas Glenn Keough, John Stan, March 2, 1993: US05191342 (88 worldwide citation)

An apparatus determines the location of a signal source having coordinates x,y). The source may be located as far away as two thousand km and does not require knowledge of ionospheric height or layer structure. The apparatus comprises at least three receivers adapted to receive the signals from the ...


4
James M Alsup, Harper J Whitehouse: Discrete chirp frequency synthesizer. The United States of America represented by the Secretary of the Navy, Richard S Sciascia, Ervin F Johnston, John Stan, July 11, 1978: US04100498 (82 worldwide citation)

An automatic frequency-hop controller for a surface acoustic wave (SAW) shesizer is used with a means for generating two chirp signals, one having a delay with respect to the other. It comprises a SAW device, adapted to receive the chirp signals. The SAW device comprises a substrate and a pair of se ...


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Kirk E Jennings: Decometer. The United States of America represented by the Secretary of the Navy, Richard S Sciascia, Ervin F Johnston, John Stan, January 25, 1977: US04005282 (51 worldwide citation)

A portable decompression computer, which is capable of providing a diver's current depth and safe-ascent depth, comprising a source of energy, for energizing various components of the computer. A micro processor is energized by the energy source. A clock generator times various components of the com ...


7
Robert P Crabb, Robert A Unger, Jim A Gilbreath: Computer memory addressing employing base and index registers. The United States of America represented by the Secretary of the Navy, Richard S Sciascia, Ervin F Johnston, John Stan, April 6, 1976: US03949378 (42 worldwide citation)

A memory addressing system which enables a computer to address a total of 048,575 words (32 times its original capacity) with minimal impact upon existing software. The method employed by this invention involves a new dual usage of the b (index) designator in each instruction word so that in additio ...


8
David W Crain: TV Object locator and image identifier. Richard S Sciascia, Ervin F Johnston, John Stan, April 11, 1978: US04084184 (40 worldwide citation)

A television object locator and image identifier, for use with a TV camera tube, having a lens whose axis is determined by the angles .theta..sub.c and .phi..sub.c. The angle .theta..sub.c forms a dihedral angle between two vertical planes, one of which contains the axis of the lens. The angle .phi. ...


9
Joseph L Mantione: Programmable frequency synthesizer (PFS). The United States of America represented by the Secretary of the Navy, Richard S Sciascia, Ervin F Johnston, John Stan, May 4, 1982: US04328554 (32 worldwide citation)

A programmable frequency synthesizer (PFS) consists of three serially conted stages: an accumulator, a triangle converter, and a sine shaper. The accumulator is the frequency-generating stage of the synthesizer. It consists of an input latch to store the binary programmed frequency, an adder, an out ...


10
James M Alsup, Harper J Whitehouse: Sampled speech compression system. The United States of America represented by the Secretary of the Navy, Richard S Sciascia, Ervin F Johnston, John Stan, May 26, 1981: US04270025 (31 worldwide citation)

A sampled speech compression and expansion system, for two-dimensional prssing of speech or other type of audio signal, comprises transmit/encode apparatus and receive/decode apparatus.