System and apparatus for performing broadcast and localcast communications
First Claim
Patent Images
1. A mobile device, comprising:
- a real-time component comprising;
a system timing function,a real-time event dispatching function, anda digital radio that is configured to receive information content in a localcast-mode and in a broadcast-mode, and to transmit information content in a localcast-mode;
wherein the broadcast mode operates on a subcarrier of a wide area transmitting channel and the localcast mode operates on a directly modulated main channel that is different from the wide area transmitting channel at which the broadcast mode operates;
a digital control and processing circuit that generates receive commands in response to tracking information received on broadcast mode such that the tracking information is received on a different channel than the mobile device transmits on, wherein the receive commands describe a receive frequency, antenna tuning parameters, and a duration of capture time;
an antenna assembly configured to be tuned in response to the receive commands;
a microcomputer assembly;
a random access memory;
a nonvolatile memory; and
a microprocessor-controlled user interface.
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Abstract
Described is a communication system including mobile communication devices. In the described system, the mobile devices may be wrist-worn watches such as are in common use today, except that the watches are specially configured to receive data in a “broadcast” mode and transmit and/or receive data in a “localcast” mode. The localcast mode includes the ability to transmit and receive data in a peer-to-peer fashion, allowing mobile devices to communicate directly with each other. The ability to combine two of these communication modes in a small, integrated and hence inexpensive and low-power package provides many advantages over existing personal communication device solutions.
90 Citations
18 Claims
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1. A mobile device, comprising:
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a real-time component comprising; a system timing function, a real-time event dispatching function, and a digital radio that is configured to receive information content in a localcast-mode and in a broadcast-mode, and to transmit information content in a localcast-mode;
wherein the broadcast mode operates on a subcarrier of a wide area transmitting channel and the localcast mode operates on a directly modulated main channel that is different from the wide area transmitting channel at which the broadcast mode operates;a digital control and processing circuit that generates receive commands in response to tracking information received on broadcast mode such that the tracking information is received on a different channel than the mobile device transmits on, wherein the receive commands describe a receive frequency, antenna tuning parameters, and a duration of capture time; an antenna assembly configured to be tuned in response to the receive commands; a microcomputer assembly; a random access memory; a nonvolatile memory; and a microprocessor-controlled user interface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A mobile device, comprising:
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means for receiving a signal that is arranged to receive a first broadcast signal from a broadcast transmitter when the mobile device is in a broadcast mode, is arranged to receive a first localcast signal from a localcast transmitter when the mobile device is in a localcast mode, is arranged to generate receive commands in response to tracking information received when the device is in the broadcast mode such that the tracking information is received on a different channel than the mobile device transmits on, wherein the receive commands describe a receive frequency, antenna tuning parameters, and a duration of capture time, and is arranged to be tuned in response to the receive commands; and means for transmitting a signal that is arranged to transmit information from the mobile device when the device is in the localcast mode. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A mobile device, comprising:
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a digital processing circuit that generates receive commands in response to received tracking information received when the device is in a broadcast mode such that the tracking information is received on a different channel than the mobile device transmits on, wherein the receive commands describe a receive frequency and a duration of capture time; an antenna assembly configured to be tuned in response to the receive commands; a transceiver that is coupled to the antenna assembly, wherein the transceiver is arranged to provide communication over the antenna assembly in one of the broadcast mode and a localcast mode;
wherein the broadcast mode operates on a wide area channel and the localcast mode operates on a local area channel that is different from the wide area channel; anda microcomputer assembly that is coupled to the antenna assembly, wherein the microcomputer assembly is arranged to control operation of the transceiver in both the broadcast mode and the localcast mode. - View Dependent Claims (16, 17, 18)
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Specification