Jong K Lee

US Patent:

53794451, Jan 3, 1995

Filed:

Nov 1, 1991

Appl. No.:

7/786834

Inventors:

Donald S. Arnstein - Fairfax VA
Jong W. Lee - Herndon VA

Assignee:

Comsat - Bethesda MD

International Classification:

H04B 116

US Classification:

455 134

Abstract:

Improved automatic gain control for an amplifier is obtained by controlling the size of a null zone in a drive signal for the amplifier. The size of the null zone is controlled by estimating strength of an interference signal, and dynamically varying the size of the null zone based on the estimated strength of the interference signal. As a result, the amplifier rarely saturates, regardless of signal strength. The invention is useful to reduce the harmful effects of jamming or interference.

US Patent:

58569219, Jan 5, 1999

Filed:

Jun 7, 1995

Appl. No.:

8/482396

Inventors:

Young Il Kim - Gaithersburg MD
Ki B. Kang - Centreville VA
Young C. Cheon - Gaithersburg MD
Jong Ky Lee - Gaithersburg MD

Assignee:

Samsung Electronics Co., Ltd. - Suwon

International Classification:

G05B 1500

US Classification:

364132

Abstract:

A system bus architecture for intermodular communications is disclosed. The system bus architecture comprises a backplane bus with associated memory and a plurality of control registers. A master system processor module is coupled to the backplane bus via a master bus controller. The master system processor module contains a central processing unit in selective communication the master bus controller. A plurality of slave modules are also coupled to the backplane bus via respective slave bus controllers. Each of the slave modules has a slave central processing unit in selective communication the slave bus controller. The master and slave bus controllers are in selective communication with the bus memory, the plurality of control registers, and the respective central processing units, to transmit and receive data through the backplane bus.

US Patent:

20180295096, Oct 11, 2018

Filed:

Feb 26, 2018

Appl. No.:

15/905767

Inventors:

- Tysons VA, US
Jong Lee - Ashburn VA, US
Mukul Gandhi - Manassas VA, US

International Classification:

H04L 29/12
H04L 12/733
H04L 12/26

Abstract:

A system and method to estimate and to limit usage time of network applications by a centrally located router is provided. The router first modifies the Domain Name System (DNS) protocol's Time To Live (TTL) values to a fix value, then it counts the number of DNS queries for an application. Number of queries multiplied by the fixed TTL value gives estimated duration of the application.