1
Harry M O Sullivan: Portable hybrid communication system and methods. Spectrum Information Technologies, Sixbey Friedman Leedom & Ferguson, November 20, 1990: US04972457 (408 worldwide citation)

A laptop device includes a personal computer, a cellular transceiver, a speakerphone, and a hybrid communications control unit. The device has connectors for attaching a headset, cellular control unit, land telephone line, and additional speakers and microphones. The microprocessor-controlled hybrid ...


2
Terry L Douglas: Voice-actuated, speaker-dependent control system for hospital bed. August 2, 1994: US05335313 (191 worldwide citation)

A voice-actuated environmental operator system of the kind which enables a user/patient to use simple voice commands to control a plurality of hospital environment room functions including operation of selected bed movement and room environment functions associated with a provided multi-function hos ...


3
Thomas Georgopulos, Donald R Laturell: Credit card-sized modem with modular DAA. AT&T, October 10, 1995: US05457601 (88 worldwide citation)

A PCMCIA credit card sized modem for use with a portable computer includes a modular data access arrangement (DAA). The modem includes a substantially rectangular modem frame configured for mounting within the case of the portable computer. The frame has a first end configured to interface with the ...


4
Dale E Folwell, Raphael Rahamim: Modem with digital isolation. Rockwell International Corporation, H Frederick Hamann, George A Montanye, Tom Streeter, November 29, 1994: US05369666 (77 worldwide citation)

The MODEM WITH DIGITAL ISOLATION removes the relatively large heavy isolation transformer from the Data Access Arrangement and substitutes two tiny pulse transformers between the Integrated Analog and Digital Signal Processor with multiplexers and demultiplexers to eliminate analog distortion and mu ...


5
David K Long: Telephone circuit to control off-hook status during receipt of caller-ID signal. Sierra Semiconductor Corporation, Burns Doane Swecker & Mathis, December 27, 1994: US05377260 (69 worldwide citation)

A telephone system includes a data modem that is coupled to a control microprocessor and a Data Access Arrangement (DAA) for detecting a Caller ID. The detected information is used to select a specific action dependent upon the specific Caller ID. Only one relay is needed with no other parts to conn ...


6
Walker C Morris: Method and apparatus for transmission of data and voice. Intelligence Technology Corporation, W Thomas Timmons & Kelly Timmons, August 11, 1998: US05793843 (54 worldwide citation)

A modem-controller for auto switching and controlling the transmission and receiving of voice and error-free transmission of standard data signals, fax data signals and voice communications over telephone line service, radio frequency networks, satellite systems, as well as cellular telephone system ...


7
Raphael Rahamim, Robert W Frankland: Data access arrangement with telephone interface. Rockwell International Corporation, William C Cray, Susie H Oh, August 4, 1998: US05790656 (51 worldwide citation)

A data access arrangement (DAA) interface for alternately coupling a telephone set to a modem for operation in conjunction with and independent of the central office power supply line. The DAA interface provides an enhanced power supply to supply adequate power to the telephone set when the telephon ...


8
Walker C Morris: Method and apparatus for transmission of data and voice. W Thomas Timmons & Kelly Timmons, September 1, 1998: US05802483 (49 worldwide citation)

A modem-controller for auto switching and controlling the transmission and receiving of voice and error-free transmission of standard data signals, fax data signals and voice communications over telephone line service, radio frequency networks, satellite systems, as well as cellular telephone system ...


9
Scott N Fritz: Temperature compensation for trans-hybrid loss in a miniaturized data access arrangement. Silicon Systems, Hecker & Harriman, April 9, 1996: US05506900 (48 worldwide citation)

Method and apparatus for temperature compensation of transhybrid loss in a data access arrangement (DAA) is provided. A thermal compensation device is situated in proximity to a thermally sensitive device. If devices which dissipate substantial power cause heating of the thermally sensitive device a ...


10
Hessam Mohajeri: Transformerless data access arrangement. S3 Incorporated, Fenwick & West, February 23, 1999: US05875235 (41 worldwide citation)

A transformerless data access arrangement (DAA) device facilitates data transfer between a high speed modem device and a central office telephone line (i.e., a phone line). The DAA device uses D/A and A/D converters in conjunction with a pair of nonlinear opto-couplers that function as an isolation ...