Patents Assigned to Fisher Berkeley Corporation
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Patent number: 5818617Abstract: An optical data communication and location apparatus for at least one location in a facility having at least one receiver at said at least one location. A plurality of portable transmitters provides optical wireless data links with the receiver. Each of the transmitters has a power supply with circuitry for transmitting data packets over said optical wireless data links to the receiver. The circuitry for transmitting data packets generates a data code having at least two time frames, each of the at least two times frames being divided into at least two data time slots. Each frame has exactly one pulse in one data time slot whereby in each data packet, there is encoded n-bits of binary data where 2.sup.n is equal to the number of time slots in each frame.Type: GrantFiled: February 4, 1997Date of Patent: October 6, 1998Assignee: Fisher Berkeley CorporationInventor: Robert T. Shipley
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Patent number: 5745272Abstract: An optical data communication and location apparatus for at least one location in a facility having at least one receiver at said at least one location. A plurality of portable transmitters provides optical wireless data links with the receiver. Each of the transmitters has a power supply with circuitry for transmitting data packets over said optical wireless data links to the receiver. The circuitry for transmitting data packets generates a data code having at least two time frames, each of the at least two times frames being divided into at least two data time slots. Each frame has exactly one pulse in one data time slot whereby in each data packet, there is encoded n-bits of binary data where 2.sup.n is equal to the number of time slots in each frame.Type: GrantFiled: October 15, 1996Date of Patent: April 28, 1998Assignee: Fisher Berkeley CorporationInventor: Robert T. Shipley
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Patent number: 5633742Abstract: An optical data communication and location apparatus for at least one location in a facility having at least one receiver at said at least one location. A plurality of portable transmitters provides optical wireless data links with the receiver. Each of the transmitters has a power supply with circuitry for transmitting data packets over said optical wireless data links to the receiver. The circuitry for transmitting data packets generates a data code having at least two time frames, each of the at least two times frames being divided into at least two data time slots. Each frame has exactly one pulse in one data time slot whereby in each data packet, there is encoded n-bits of binary data where 2.sup.n is equal to the number of time slots in each frame.Type: GrantFiled: September 21, 1995Date of Patent: May 27, 1997Assignee: Fisher Berkeley CorporationInventor: Robert T. Shipley
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Patent number: 5062151Abstract: Personnel locating system for use in a facility having a plurality of rooms having doorways therein comprised of a plurality of portable transmitters. Each of the transmitters includes a battery and each generates an infrared signal. The system also comprises a plurality of fixed receivers positioned to cover different rooms at a facility. Each room has a receiver therein positioned to accept infrared radiation from a substantial portion of the volume of the room. Each receiver is capable of sensing and storing any of the infrared signals generated by the transmitters during any time the transmitters are located anywhere in the facility including when located within a room. The system also includes apparatus for polling the receivers to determine the location of any transmitter independent of the previous location of the transmitter.Type: GrantFiled: April 27, 1990Date of Patent: October 29, 1991Assignee: Fisher Berkeley CorporationInventor: Robert T. Shipley
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Patent number: 4728928Abstract: Call switch for use by hospital patients and staff members to summon aid in wet areas such as shower and bath areas. An actuating magnet is positioned on the front side of a waterproof panel for controlling the operation of electronic circuitry mounted in a dry area behind the panel. The magnet is carried by a slide for movement between rest and tripped positions, and a pull cord is connected to the slide by a breakaway member which permits the cord to separate from the slide when a patient becomes entangled in the cord or the pull on the cord otherwise exceeds a predetermined limit.Type: GrantFiled: May 8, 1986Date of Patent: March 1, 1988Assignee: Fisher Berkeley CorporationInventor: Robert T. Shipley
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Patent number: RE35035Abstract: Personnel locating system for use in a facility having a plurality of rooms having doorways therein comprised of a plurality of portable transmitters. Each of the transmitters includes a battery and each generates an infrared signal. The system also comprises a plurality of fixed receivers positioned to cover different rooms at a facility. Each room has a receiver therein positioned to accept infrared radiation from a substantial portion of the volume of the room. Each receiver is capable of sensing .[.and storing.]. any of the infrared signals generated by the transmitters during any time the transmitters are located anywgere in the facility when located within a room. The system also includes apparatus .[.for polling.]. .Iadd.coupled to .Iaddend.the receivers to determine the location of any transmitter independent of the previous location of the transmitter.Type: GrantFiled: October 28, 1993Date of Patent: September 12, 1995Assignee: Fisher Berkeley CorporationInventor: Robert T. Shipley