Neil H Tender

US Patent:

61818259, Jan 30, 2001

Filed:

Dec 2, 1994

Appl. No.:

8/352836

Inventors:

Roderick J. Ragland - Bethesda MD
Spiros S. Dimolitsas - Gaithersburg MD
Franklin L. Corcoran - Rockville MD
Neil H. Tender - Potomac MD

Assignee:

Comsat Corporation - Bethesda MD

International Classification:

G06K 936

US Classification:

382239

Abstract:

Compression and decompression methods for transmitting facsimile images in which the facsimile image is compressed in both vertical and horizontal directions are implemented using two dimensional maximum differences algorithms. Asymmetrical and fractional image compression are provided by controlling the number of lines, i. e. , rows or columns, being compressed and by controlling the bit segment length used during each differences determination. The compressed facsimile image is decompressed by selecting a reference bit in the decompressed facsimile image and expanding the bit in both vertical and horizontal directions in accordance with a binary value of bits near the selected reference bit. A transmission channel adapted to serially perform the encoding and decoding functions is also described.

US Patent:

20160164598, Jun 9, 2016

Filed:

Dec 9, 2014

Appl. No.:

14/564838

Inventors:

- Germantown MD, US
Tariq MUHAMMAD - Germantown MD, US
Neil H. TENDER - Bethesda MD, US
Esmail H. CHITALWALA - Germantown MD, US
Alex SAAD - Vienna VA, US

International Classification:

H04B 10/079

Abstract:

An apparatus for inline monitoring of transmit signals is disclosed. The apparatus includes a processor, and one or more fiber optic lines for supplying a transmit signal to/from a remote transmission station. The processor is configured to receive input for selecting one or more fiber optic lines for examination, determine at least one property of the transmit signal to be monitored, and retrieve information corresponding to the at least one property for a predetermined period of time. The processor is further configured to output a visual representation of the retrieved information, perform an analysis of the retrieved information and the visual representation, and facilitate identification of at least one status associated with the transmit signal based, at least in part, on the analysis.