Transceiver for wireless in-building communication sytem
First Claim
1. A transceiver used for a wireless in-building communication system comprising:
- a housing to be fitted with a fluorescent-lamp luminaire having two lamp sockets to which AC power supply voltage is supplied;
at least one lamp base projected from said housing so as to be engaged with said lamp socket, for receiving the AC power supply voltage from said luminaire;
means for radiating/receiving electromagnetic wave, disposed on a surface of said housing or in said housing, said radiating/receiving means including a first radiating/receiving means for radiating/receiving electromagnetic wave with a directional pattern of a small half-power beam width, and a second radiating/receiving means for radiating/receiving electromagnetic wave with a directional pattern of a large half-power beam width, and first radiating/receiving means being used for wireless transmission with a transmit-receive bus interface means, said second radiating/receiving means being used for wireless transmission with at least one user transceiver;
a power conversion circuit disposed in said housing, for converting the AC power supply voltage received via said lamp base into DC voltage having a predetermined voltage value; and
at least one transmit-receive circuit disposed in said housing and coupled with said radiating/receiving means so as to execute transmit-receive operation, said transmit-receive circuit being operated by the DC voltage supplied from said power conversion circuit.
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Accused Products
Abstract
A transceiver used for a wireless in-building communication system has a housing which can be fitted with a luminaire having at least one lamp socket to which AC power supply voltage is supplied. At least one lamp base is projected from the housing and is capable of being engaged with the lamp socket so as to receive the AC power supply voltage from the luminaire. A member for radiating/receiving light or electromagnetic wave is disposed on a surface of the housing or in the housing. A power conversion circuit is disposed in the housing so as to convert the AC power supply voltage received via the lamp base into DC voltage having a predetermined voltage value. At least one transmit-receive circuit is disposed in the housing and is coupled with the radiating/receiving member so as to execute transmit-receive operation. The transmit-receive circuit is operated by the DC voltage supplied from the power conversion circuit.
105 Citations
13 Claims
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1. A transceiver used for a wireless in-building communication system comprising:
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a housing to be fitted with a fluorescent-lamp luminaire having two lamp sockets to which AC power supply voltage is supplied; at least one lamp base projected from said housing so as to be engaged with said lamp socket, for receiving the AC power supply voltage from said luminaire; means for radiating/receiving electromagnetic wave, disposed on a surface of said housing or in said housing, said radiating/receiving means including a first radiating/receiving means for radiating/receiving electromagnetic wave with a directional pattern of a small half-power beam width, and a second radiating/receiving means for radiating/receiving electromagnetic wave with a directional pattern of a large half-power beam width, and first radiating/receiving means being used for wireless transmission with a transmit-receive bus interface means, said second radiating/receiving means being used for wireless transmission with at least one user transceiver; a power conversion circuit disposed in said housing, for converting the AC power supply voltage received via said lamp base into DC voltage having a predetermined voltage value; and at least one transmit-receive circuit disposed in said housing and coupled with said radiating/receiving means so as to execute transmit-receive operation, said transmit-receive circuit being operated by the DC voltage supplied from said power conversion circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification