Remote control receiver

US4198620A · kind A · utility

Assignee

• Preh, Elektrofeinmechanische Werke Jakob Preh, Nachf. GmbH & Co. · DE

Inventors

• Alfred Vogt · Freiensteinau, DE
• Bernd Veith · Bad Neustadt an der Saale, DE
• Anton Rüttiger · Wildflecken, DE

Key dates

• Filing date: Aug 17, 1978
• Grant date: Apr 15, 1980
• Expiry date: Aug 17, 1998

Classification

• Technology area (CPC H): Electricity
• CPC primary: H03J9/04
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

Apparatus for receiving remote control signals which comprise an alternat sequence of two chronologically successive pulses, the first pulse having a first predetermined frequency and the second pulse having a second frequency manually selected from a predetermined number of frequencies, each of the predetermined number of frequencies representing a command to be carried out. The receiver comprises a signal detector, a signal amplifier and a circuit for decoding the remote control signal into a group signal dependent on the first frequency and a command signal dependent on the second frequency. A controllable gate is provided for gating the command signal from the decoding circuit to a command signal register having a command signal input for each of the commands, and an input for blocking each command signal output. Means coupled to the command signal outputs implement the commands. A circuit responsive to the group signal controls the gate, while a circuit responsive to receipt of a command signal in the register causes the remaining command signal inputs to be locked.