Start signal generating apparatus

Patent metadata

Field	Value
Publication number	US-9503980-B2
Application number	US-201314369028-A
Country	US
Kind code	B2
Filing date	Feb 25, 2013
Priority date	Mar 7, 2012
Publication date	Nov 22, 2016
Grant date	Nov 22, 2016

Abstract

Besides a time constant circuit 5 that imposes a frequency limit on a wireless signal detected by a power detecting circuit 4 at a preset time constant Ta, there is provided a time constant circuit 8 that imposes a frequency limit on the wireless signal at a time constant Tb greater than the time constant Ta. When the signal level of an intermittent operation signal supplied from a signal input terminal 1 is H level or when a threshold processing circuit 6 decides that the level of the wireless signal is higher than a threshold Th, a logic unit 3 supplies a control signal that instructs starting to the power detecting circuit 4 , time constant circuits 5 and 8 and threshold processing circuits 6 and 9.

First claim

What is claimed is:

1. A start signal generating apparatus comprising:
a wireless signal detecting circuit that executes detection processing of a wireless signal;
a first time constant circuit that imposes a first frequency limit on the wireless signal detected by the wireless signal detecting circuit at a preset first time constant;
a first level decision circuit that decides on whether a first level of the wireless signal on which the first frequency limit is imposed by the…

Assignees

• Hirai Akihito
• Takahashi Yoshinori
• Taniguchi Eiji
• Mitsubishi Electric Corp

Inventors

• Hirai Akihito
• Takahashi Yoshinori
• Taniguchi Eiji

Classifications

• H04B17/318

  Electricity · mapped topic

• H04W52/0225 Primary

  Electricity · mapped topic

• H04W52/0245

  Electricity · mapped topic

• H04B1/16

  Electricity · mapped topic

• H04W52/0229

  Electricity · mapped topic