LOW POWER WIRELESS SHORT RANGE TRANSMISSION SYSTEM
First Claim
1. A wireless short range transmission system comprising:
- a controller;
a first oscillator;
a transmitter that comprises;
a phase-lock loop frequency synthesizer for receiving a reference signal from the first oscillator and a first modulation signal from the controller, wherein the phase-lock loop frequency synthesizer is configured to be turned on by the first modulation signal for generating a carrier signal based on the reference signal; and
a power amplifier for receiving the carrier signal from the phase-lock loop frequency synthesizer and a second modulation signal, wherein the power amplifier is configured to be turned on and off by the second modulation signal in order to generate a modulated signal based on the carrier signal, wherein the power amplifier is turned on after the phase-lock loop frequency synthesizer is stabilized and the phase-lock loop frequency synthesizer is turned off with the power amplifier or after the power amplifier has been turned off; and
an antenna for transmitting the modulated signal.
1 Assignment
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Accused Products
Abstract
A wireless short range transmission system comprises a controller, a first oscillator, a transmitter, and an antenna. The transmitter comprises a phase-lock loop frequency synthesizer for receiving a reference signal from the first oscillator and a first modulation signal. The phase-lock loop frequency synthesizer is configured to be turned on by the first modulation signal for generating a carrier signal based on the reference signal. The transmitter further comprises a power amplifier for receiving the carrier signal from the phase-lock loop frequency synthesizer and a second modulation signal. The power amplifier is configured to be turned on/off by the second modulation signal to generate a modulated signal based on the carrier signal. The power amplifier is turned on after the phase-lock loop frequency synthesizer is stabilized and the phase-lock loop frequency synthesizer is turned off with the power amplifier or after the power amplifier has been turned off.
17 Citations
20 Claims
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1. A wireless short range transmission system comprising:
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a controller; a first oscillator; a transmitter that comprises; a phase-lock loop frequency synthesizer for receiving a reference signal from the first oscillator and a first modulation signal from the controller, wherein the phase-lock loop frequency synthesizer is configured to be turned on by the first modulation signal for generating a carrier signal based on the reference signal; and a power amplifier for receiving the carrier signal from the phase-lock loop frequency synthesizer and a second modulation signal, wherein the power amplifier is configured to be turned on and off by the second modulation signal in order to generate a modulated signal based on the carrier signal, wherein the power amplifier is turned on after the phase-lock loop frequency synthesizer is stabilized and the phase-lock loop frequency synthesizer is turned off with the power amplifier or after the power amplifier has been turned off; and an antenna for transmitting the modulated signal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A wireless keyboard comprising:
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a controller; a first oscillator; a transmitter that comprises; a phase-lock loop frequency synthesizer for receiving a reference signal from the first oscillator and a first modulation signal from the controller, wherein the phase-lock loop frequency synthesizer is configured to be turned on by the first modulation signal for generating a carrier signal based on the reference signal; a power amplifier for receiving the carrier signal from the phase-lock loop frequency synthesizer and a second modulation signal, wherein the power amplifier is configured to be turned on and off by the second modulation signal in order to generate a modulated signal based on the carrier signal, wherein the power amplifier is turned on after the phase-lock loop frequency synthesizer is stabilized and the phase-lock loop frequency synthesizer is turned off with the power amplifier or after the power amplifier has been turned off; and an antenna for transmitting the modulated signal; and a key matrix coupled to the controller. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A wireless short range transmission system comprising:
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an oscillator to generate a reference clock signal; a controller to send a first modulation signal and a second modulation signal following the first modulation signal; a phase-lock loop frequency synthesizer to be turned on in response to the first modulation signal and turned off in response to a falling edge of the second modulation signal, the phase-lock loop frequency synthesizer to generate a carrier signal based on the reference clock signal; and a power amplifier to generate a modulated signal based on the carrier signal, the power amplifier to be turned on in response to a rising edge of the second modulation signal and turned off in response to a falling edge of the second modulation signal. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification