Jeffrey L Sanders

US Patent:

6741705, May 25, 2004

Filed:

Feb 23, 2000

Appl. No.:

09/511082

Inventors:

Mark R. Nelson - Plano TX
K. Paul Clark - Frisco TX
Charles A. Munro - Coppell TX
Jeffrey A. Sanders - Plano TX

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04K 100

US Classification:

380257, 379 9324, 713193

Abstract:

A system is provided for securing voice mail messages. The system includes a packet network and a telephony device that is coupled to the packet network. The system also includes a voice mail system that is coupled to the packet network and that receives a voice mail message from a caller attempting to communicate with a user of the telephony device. The voice mail system encrypts the voice mail message using a public key associated with the telephony device and stores the encrypted voice mail message in an open file system coupled to the packet network.

US Patent:

58617361, Jan 19, 1999

Filed:

Dec 1, 1994

Appl. No.:

8/348670

Inventors:

Marco Corsi - Dallas TX
Nicolas Salamina - Dallas TX
Jeffrey W. Sanders - Plano TX
Michael R. Kay - Richardson TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

G05F 1575

US Classification:

323273

Abstract:

A voltage regulator circuit (10) is provided. Regulator circuit (10) includes an amplifier (18) with an emitter follower output stage (26). Emitter follower stage (26) is coupled to a gate of a PMOS transistor (28). The source of transistor (28) is coupled to an input voltage at a power supply rail (12). Regulator (10) provides an output at node (14) at a drain of transistor (28). The output at node (14) is divided by resistors (30 and 34) and provided in a negative feedback loop to an input of amplifier (18). A reference voltage (22) is also provided to a second input of amplifier (18) such that the output at node (14) is a regulated voltage.