Remote controlled switch

• US 4,935,733 A
• Filed: 01/07/1988
• Issued: 06/19/1990
• Est. Priority Date: 01/07/1988
• Status: Expired due to Fees

• Current Assignee: Toshio Hayashi
• Original Assignee: Toshio Hayashi
• Inventors: Munekata, Mitsuo
• Primary Examiner(s): Yusko, Donald J.
• Assistant Examiner(s): Magistre, Dervis
• Application Number:
  US07/142,134
• Time in Patent Office: 894 Days
• Field of Search: 340/825.57, 340/825.63, 340/825.71, 340/825.72, 340/825.44, 340/825.69, 367/197, 455/600, 455/603, 358/194.1, 307/118
• US Class Current: 340/12.22
• CPC Class Codes: G08C 19/28 using pulse code

Abstract

A remote control receiver responds to a coded signal from a transmitter by actuating a switch that in turn acts to deliver power to a load or device connected to it. This switch responds not to one specific signal using a particular format, but instead it acts in response to any existing signal originating from any of a plurality of remote control transmitters. This switch, therefore, allows a remote control transmitter intended solely for activating and controlling a single device to control any such device provided the switch is attached to it in the manner disclosed.

Claims

1. A remote control infrared receiver for use with a remote control infrared transmitter characterized by a cyclic control signal in which each cycle includes a reader code and a user selectable variable custom and data code for actuating one of several possible functions in a first controlled device, comprising:

memory circuit means for stretching the reader pulse code and shaper circuit means for converting said stretched pulse to an output signal;

wherein said memory circuit means comprises capacitor charging means and capacitor discharge means driving said shaper circuit means, said discharge means having a discharge time greater than the interval between reader code pulses in successive cycles; and

wherein said shaper circuit means comprises amplifier means for deriving a constant amplitude output of duration greater than the cycle time of said control signal;

whereby said cyclic pulsed control signal is converted by said receiver to a constant amplitude pulse of minimum duration greater than said cycle time independently of the pulse coding content of the received signal; and

switch means selectively responsive to a signal having said minimum duration.

2. A remote control receiver comprising:

sensor means for detecting a transmitted control signal;

switch means for controlling power to a load;

said switch means actuated by an input voltage in excess of a given level and of a minimum duration; and

circuit means connected between said sensor means and said switch means for converting a pulse coded signal having variable pulse coded content sensed by said sensor means to said input voltage of amplitude and duration sufficient for actuating said switch means irrespective of the pulse coded content of said coded signal.

3. The receiver of claim 2 wherein said pulse coded signal is a cyclic signal each cycle including a plurality of code pulses and wherein said circuit means comprise amplifier means having an output connected for actuating said switch means, capacitor means connected to an input of said amplifier means, first means connected to said sensor means for charging said capacitor means and second means for discharging said capacitor, said first and second means characterized by time constants such that said amplifier means is driven responsive to a portion of each said cycle to an output of amplitude sufficient to actuate said switch means and duration in excess of said pulse code cycle, whereby different transmitted pulse code cycles of said pulse coded signal are all converted to the same output signal for actuating said switch means.

4. A remote control infrared receiver for use with a transmitter characterized by a cyclic control signal in which each cycle includes a repeating reader code and a variable data code intended to control operation of a multiplicity of functions in a first device, comprising:

infrared sensor means for detecting the transmitted control signal;

switch means for controlling power to a second device, said switch means actuatable by a control voltage in excess of a given level and of a minimum duration; and

amplifier means having an output connected for actuating said switch means, capacitor means connected to an input of said amplifier means, first means connected to said sensor means for charging said capacitor means and second means for discharging said capacitor, said first and second means characterized by time constants such that said amplifier means is driven responsive to said repeating reader code portion of said pulse cycle to an output of amplitude sufficient to actuate said switch means and duration is excess of said pulse code cycle, whereby a plurality of transmitted pulse code cycles of said pulse coded signal are converted to constant level signal of duration greater than said variable data code portion of each said cycle for acturating said switch means irrespective of the variable data coded content of said pulse code cycles.

5. The receiver of claim 4 wherein said first means comprise first diode means and first resistor means connected in series between said sensor means and said capacitor means for charging said capacitor means, and said second means comprise second diode means and second resistor means likewise mutually in series but in parallel with said first diode means and first resistor means for discharging said capacitor means, said capacitor means defining with said second resistor means a time constant substantially greater than with said first resistor means.

6. A remote comtrol receiver for use with a remote control transmitter emitting a pulse coded control signal characterized by a cyclic pulse sequence adapted to control a first device, said receiver comprising:

integrating circuit means for integrating said pulse code sequence having variable pulse code sequences to a given output waveform having a duration greater than the pulse sequence cycle time, and switch actuating means driven by said waveform for controlling a second device responsively to said control signal but independently of said variable pulse code sequences.