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Wireless transceiver with multiple independent modulating transmitters

  • US 20070013544A1
  • Filed: 07/14/2005
  • Published: 01/18/2007
  • Est. Priority Date: 07/14/2005
  • Status: Abandoned Application
First Claim
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1. A wireless transceiver with multiple independent modulating transmitters capable of successively transmit two or more different output RF with different predetermined carrier frequency but modulating with same signal control code in operating remote control, comprising:

  • a control key unit including a plurality of control keys;

    a memory unit to memorize and store signal control codes that correspond respectively to the control keys;

    a code-copied unit comprising a receiver and a demodulator, the receiver is capable of receiving a RF signal transmitted from a target remote-controlled device limited with predetermined identified carrier frequency, and the demodulator is to demodulate the received RF signal to obtain a signal control code;

    a microcontroller unit is a programmable microprocessor with I/O pins including functions of receiving the demodulated signal control code output from the code-copied unit and having the demodulated signal control code stored to the memory unit;

    retrieving corresponding stored signal control code from thee memory unit in response to a corresponding control key of the control key unit being pressed; and

    successively outputting the same retrieved corresponding stored signal control code from two or more I/O pins of the microcontroller unit; and

    a modulating transmitter means to successively transmit two or more different output RF is constituted with two or more independent modulating transmitters, each is respectively connected to corresponding I/O pins of the microcontroller unit and provided with a modulator to generate a carrier signal with predetermined different carrier frequency selected from one of 300 MHz, 305 MHz, 310 MHz, 315 MHz, 390 MHz and 433.9 MHz, and to modulate the carrier signal with the same retrieved corresponding stored signal control code output from the microcontroller unit for producing an output RF signal.

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