Communication device and method for reducing effects of noise introduction by synchronizing data transfer to a received signal
First Claim
1. A communication device comprising:
- an antenna for detecting a radio frequency signal;
a receiver circuit coupled to the antenna for receiving the radio frequency signal and generating at an output a demodulated signal therefrom;
a signal processing circuit having an input coupled to the output of the receiver circuit for processing the demodulated signal to generate at an output a data signal;
a first electrical communication path coupling the output of the receiver circuit to the input of the signal processing circuit; and
a controller circuit coupled to the output of the signal processing circuit, the controller circuit generating a transfer control signal to control timing of transfer of signals between the receiver circuit, the signal processing circuit and the controller circuit, by;
determining when a predetermined portion of a symbol in the radio frequency signal is at an input to the receiver circuit;
initiating a time delay of a first predetermined period of time upon determining the predetermined portion of a symbol; and
generating the transfer control signal to enable transfer of the data signal for a second predetermined period of time beginning after the first predetermined period of time.
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Accused Products
Abstract
A communication device (100) having a receiver circuit (110), signal processor circuit (120), controller circuit (130), either embodied by integrated circuits or on a single integrated circuit. The transfer of signals between the circuits is timed so as to minimize the effects of noise introduced into any one of the circuits, particularly the receiver circuit (110). The center of a symbol of a received RF symbol is detected and, through hardware control or software control, the transfer of a data signal generated by the signal processor circuit (120), for example, is permitted to occur only during a period(s) of time determined to have minimal effects on the sampling of a symbol in a received signal by the receiver circuit (110).
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Citations
12 Claims
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1. A communication device comprising:
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an antenna for detecting a radio frequency signal; a receiver circuit coupled to the antenna for receiving the radio frequency signal and generating at an output a demodulated signal therefrom; a signal processing circuit having an input coupled to the output of the receiver circuit for processing the demodulated signal to generate at an output a data signal; a first electrical communication path coupling the output of the receiver circuit to the input of the signal processing circuit; and a controller circuit coupled to the output of the signal processing circuit, the controller circuit generating a transfer control signal to control timing of transfer of signals between the receiver circuit, the signal processing circuit and the controller circuit, by; determining when a predetermined portion of a symbol in the radio frequency signal is at an input to the receiver circuit; initiating a time delay of a first predetermined period of time upon determining the predetermined portion of a symbol; and generating the transfer control signal to enable transfer of the data signal for a second predetermined period of time beginning after the first predetermined period of time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for controlling transfer of signals between circuits, including a receiver circuit that receives a radio frequency signal and generates a demodulated signal, a signal processing circuit that processes the demodulated signal and generates a data signal, and a controller circuit that processes the data signal, the method comprising steps of:
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determining a time window when effects of noise introduced into the receiver circuit due to transfer of signals between circuits will be minimized, the step of determining further comprising the substeps of; determining when a predetermined portion of a symbol in the radio frequency signal is received; and initiating a time delay of a first predetermined period of time upon determining the predetermined portion of a symbol; and generating a transfer control signal to enable transfer of information between the circuits during the time window, the step of generating further comprising the substep of; generating the transfer control signal to enable transfer of the data signal for a second predetermined period of time beginning after the first predetermined period of time. - View Dependent Claims (11, 12)
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Specification