Patent · US Expired

Remote control arrangement using pulse spacing modulator

US4232297A · kind A · utility

7Cited by

7References

4Claims

0Family size

Assignee

ITT Industries · US

Inventors

Albrecht Gerlach · Freiamt, DE
Dieter Holzmann · Glückstadt, DE
Guenter Lindstedt · Glückstadt, DE
Rolf D. Burth · Emmendingen, DE

Key dates

Filing date	Dec 15, 1978
Grant date	Nov 4, 1980
Priority date	—
Expiry date	Dec 15, 1998

Classification

Technology area (CPC G)Physics
CPC primaryG08C19/28
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

A remote control arrangement uses pulse code modulation for transmission as in infrared remote control arrangements. A feature of the arrangement is that only one quartz oscillator is necessary and is used in the receiver part. The receiver measures the first pulse width transmitted and, dependent on that, defines the measured period of a control circuit. A primary feature is that the arrangement is provided with a prepulse having a threefold pulse width before the start pulse thereby allowing the preamplifier of the receiver to be in its normal operating area when the start pulse occurs.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.