System and method for modulation on demand in a computing device
First Claim
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1. A system for modulation on demand comprising:
- a processor located in a computing device;
a memory device located on said computing device;
a system bus within said computing device connecting the processor and the memory device;
an analog front end connected to the system bus, the analog front end comprising;
logic configured to measure an intermessage period starting with signal energy absence on a communication channel and ending with signal energy presence on the communication channel; and
logic configured to determine, based on the intermessage period, if a plurality of received samples that is received after the intermessage period will be processed.
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Abstract
A system and method for modulation on demand in a computing device, such as a personal computer, allows a central processor located in a computing device to perform the processing necessary to accomplish data communications without the need for an external processor. The system and method uses a novel modulation and accomplishes that modulation on the processor of a general purpose computing device.
21 Citations
25 Claims
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1. A system for modulation on demand comprising:
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a processor located in a computing device;
a memory device located on said computing device;
a system bus within said computing device connecting the processor and the memory device;
an analog front end connected to the system bus, the analog front end comprising;
logic configured to measure an intermessage period starting with signal energy absence on a communication channel and ending with signal energy presence on the communication channel; and
logic configured to determine, based on the intermessage period, if a plurality of received samples that is received after the intermessage period will be processed. - View Dependent Claims (2, 3, 4)
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5. A system for modulation on demand comprising:
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a processor located in a computing device;
a memory device located on said computing device;
a system bus within said computing device connecting the processor and the memory device;
an analog front end connected to the system bus, the analog front end comprising;
logic configured to measure an intermessage period starting with signal energy absence on a communication channel and ending with signal energy presence on the communication channel;
logic configured to determine a transmit time, the transmit time based on signal energy presence detected after the intermessage period exceeds a predetermined minimum, and based on a last received message length; and
logic configured to transmit, at the transmit time, a message comprising a plurality of transmit samples. - View Dependent Claims (6, 7, 8)
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9. A system for half duplex modulation on demand comprising:
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a processor located in a computing device;
a memory device located on said computing device;
a system bus within said computing device connecting the processor and the memory device;
an analog front end connected to the system bus, the analog front end comprising;
an intermessage timer configured to start when no energy is detected on a communications channel and to expire at a maximum time allowed between received messages; and
logic configured to restart the intermessage timer when energy is detected on the communications channel, and further configured to enable, upon a first condition, a transfer of received samples to the processor, wherein the first condition comprises an expiration of the intermessage timer and detection of energy after the expiration. - View Dependent Claims (10, 11, 12, 13)
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14. A system for half duplex modulation on demand comprising:
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a processor located in a computing device;
a memory device located on said computing device;
a system bus within said computing device connecting the processor and the memory device;
an analog front end connected to the system bus, the analog front end comprising;
an intermessage timer configured to start when no energy is detected on a communications channel and to expire at a maximum time allowed between received messages, and defining an intermessage period; and
a poll detector configured to detect signal energy presence after the intermessage period exceeds a predetermined minimum. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A receiver of a signal containing modulated information wherein a portion of the received signal is demodulated in real time and the remainder is demodulated at a later times.
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25. A transmitter of a signal containing modulated information wherein a transmission response to a received poll is created from a data stored in memory as a predetermined, pre-modulated signal.
Specification