Communication system having automatic addressing
First Claim
1. A communication system comprising:
- at least one master transceiver for transmitting master messages, each of said master messages having an address for identifying the master transceiver transmitting said master message; and
at least one slave transceiver for acquiring a particular address from a first of said master messages received unsolicited after turn on of the slave transceiver;
receiving subsequent said master messages having said particular address and ignoring said subsequent master messages not having said particular address until the slave receiver is turned off; and
acquiring a new address from a first of new said master messages received unsolicited after a new turn on of the slave transceiver and using said new address for receiving subsequent said new master messages having said new address and ignoring said subsequent new master messages not having said new master address.
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Accused Products
Abstract
A communication system, method, and multiple master and slave transceivers having automatic addressing and collision avoidance. A master transceiver is programmed with its address by a user through a host. After being turned on, a slave transceiver acquires its address as the address of the first message it receives from a master transceiver. The master and the slave transceivers then communicate in each direction and ignore other messages by using that address until the slave transceiver is turned off. When the slave transceiver is turned on again, it acquires a new address of the address of the first new message it receives from a master transceiver, not necessarily the same master transceiver. The transceivers communicate with a signal having an on-condition having different lengths for representing different symbols. A transmitting transceiver detects a collision when it detects a signal on-condition during the longer of the different lengths while it is transmitting a signal on-condition of the shorter of the different lengths.
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Citations
14 Claims
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1. A communication system comprising:
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at least one master transceiver for transmitting master messages, each of said master messages having an address for identifying the master transceiver transmitting said master message; and at least one slave transceiver for acquiring a particular address from a first of said master messages received unsolicited after turn on of the slave transceiver;
receiving subsequent said master messages having said particular address and ignoring said subsequent master messages not having said particular address until the slave receiver is turned off; and
acquiring a new address from a first of new said master messages received unsolicited after a new turn on of the slave transceiver and using said new address for receiving subsequent said new master messages having said new address and ignoring said subsequent new master messages not having said new master address. - View Dependent Claims (2, 3, 4, 5)
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6. A communication method for acquiring an address in a transceiver, comprising steps of:
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transmitting master messages, each of said master messages having an address for identifying a master transceiver transmitting said master message; in a slave transceiver, acquiring a particular address from a first of said master messages received unsolicited after turn on of said slave receiver; in said slave transceiver, receiving subsequent said master messages having said particular address and ignoring said subsequent master messages not having said particular address until the slave receiver is turned off; acquiring a new address from a first of new said master messages received after a new turn on of said slave transceiver; receiving subsequent said new master messages having said new address; and ignoring said subsequent new master messages not having said new address. - View Dependent Claims (7, 8, 9, 10)
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11. A transceiver having collision avoidance, comprising:
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a transmitter for transmitting a certain signal having one of a first symbol and a second symbol during a certain symbol transmission time, said first symbol indicated by an on-condition during a first segment of said symbol transmission time, said second symbol indicated by said on-condition during a second segment of said symbol transmission time, at least a portion of said second segment not coincident with any portion of said first segment; a receiver for receiving said certain signal; and a collision detector coupled to the receiver and the transmitter for detecting a collision when said on-condition is detected during said portion of said second segment of said symbol transmission time while said first symbol is being transmitted. - View Dependent Claims (12)
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13. A method of collision avoidance in a transceiver, comprising steps of:
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transmitting a certain signal having one of a first symbol and a second symbol during a certain symbol transmission time, said first symbol indicated by an on-condition during a first segment of said symbol transmission time, said second symbol indicated by said on-condition during a second segment of said symbol transmission time, at least a portion of said second segment not coincident with any portion of said first segment; receiving said certain signal; and detecting a collision when said on-condition is detected during said portion of said second segment of said symbol transmission time while said first symbol is being transmitted. - View Dependent Claims (14)
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Specification