Robert M Heil

US Patent:

7308016, Dec 11, 2007

Filed:

Dec 11, 2003

Appl. No.:

10/733975

Inventors:

Robert H. Heil - Redondo Beach CA, US

Assignee:

Raytheon Company - Waltham MA

International Classification:

H04B 1/00

US Classification:

375130, 375142, 375150, 380255

Abstract:

A system for inhibiting a potential interference source in a communications system. The system includes a first mechanism for incorporating a code within a signal. A second mechanism employs the code to decode the signal. A third mechanism for selectively prevents detection by the second mechanism of a subsequent signal employing the code. In a specific embodiment, the third mechanism incorporates a predetermined delay after receipt of the signal by the second mechanism. The predetermined delay is sufficient to prevent detection by the second mechanism of the subsequent signal employing the code. The code is a function of a time value associated with the signal. The subsequent signal incorporates the code and lacks a corresponding accurate time value due to the predetermined delay. Consequently, rebroadcast of the subsequent signal, which is a delayed signal, is less likely to interfere with the system communications.

US Patent:

44132212, Nov 1, 1983

Filed:

Dec 18, 1980

Appl. No.:

6/217897

Inventors:

Fred Benjamin - Fullerton CA
Robert H. Heil - Harbor City CA

Assignee:

Christie Electric Corporation - Torrance CA

International Classification:

G01R 3136

US Classification:

320 48

Abstract:

The capacity of a battery is determined while charging the battery by measuring the time it takes the battery voltage to decrease to a selected voltage level during discharging intervals interspersed between charging intervals. The state-of-charge is also determined by measuring the voltage level during a discharge interval while monitoring the duration of the charge cycle. Additionally, faulty cells of the battery are detected by measuring the voltage of the individual cells at the end of a discharging interval during the charging of the battery.