1
Kevin M Klughart: Wireless communication system with parallel polling. Dallas Semiconductor Corporation, Worsham Forsythe Sampels & Wooldridge, June 18, 1991: US05025486 (142 worldwide citation)

A system which can provide short-range wireless data communication between a base station and a portable low-power module. Each portable module has an identification field by which it can be addressed separately. The identification field (which is 64 bits long in the presently preferred embodiment) ...


2
Wendell L Little: Integrated circuit with watchdog timer and sleep control logic which places IC and watchdog timer into sleep mode. Dallas Semiconductor, Worsham Forsythe Sampels & Wooldridge, December 29, 1992: US05175845 (121 worldwide citation)

A system which includes a microprocessor (or microcontroller) and an auxiliary chip which monitors the system power supply voltage and performs related functions for the microprocessor, and also provides a watchdog function to monitor the microprocessor's activity. The auxiliary chip itself can put ...


3
Wendell L Little, Stephen N Grider: Nonvolatile microprocessor with predetermined state on power-down. Dallas Semiconductor, Worsham Forsythe Sampels & Wooldridge, August 17, 1993: US05237699 (98 worldwide citation)

A battery-backed microprocessor which enters a known state on power-down. This is achieved, even if the microprocessor does not permit a single-cycle reset, by providing clock intercept circuitry on chip. When system power failure is detected, the clock intercept circuitry disconnects the external c ...


4
Donald R Dias: Temperature-stabilized oscillator. Dallas Semiconductor Corporation, Worsham Forsythe Sampels & Wooldridge, September 19, 1989: US04868525 (91 worldwide citation)

An oscillator with reduced temperature-dependence. A time-delay circuit uses both a pull-up resistor and a pull-down resistor, of two different types, to charge a capacitor. The material with the smallest available thermal coefficient of resistance (TCR) is used for the pull-up resistor. Another mat ...


5
James E Bartling, Wendell L Little, Kevin E Deierling: Isolation gates to permit selective power-downs within a closely-coupled multi-chip system. Dallas Semiconductor, Worsham Forsythe Sampels & Wooldridge, January 26, 1993: US05182810 (89 worldwide citation)

A battery-backed ancillary power-management chip, in combination with a battery-backed microprocessor or microcontroller, permits a low-power system to achieve a zero-power standby mode with full nonvolatility. The ancillary chip contains transmission gates which can cut off the connection between t ...


6
Michael D Smith: Digital to analog converter using a programmable logic array. Dallas Semiconductor, Worsham Forsythe Sampels & Wooldridge, April 6, 1993: US05200751 (83 worldwide citation)

A digital to analog converter, wherein a time/voltage array is programmable, to determine which of the possible reference voltages will be enabled by which of the control inputs. Anther set of programmable options, in an output connection matrix, determines which of the internal voltage lines will b ...


7
Michael L Bolan, Wendell L Little: Battery-initiated touch-sensitive power-up. Dallas Semiconductor Corporation, Worsham Forsythe Sampels & Wooldridge, September 28, 1993: US05249298 (79 worldwide citation)

A power-switching device (such as a gate-controlled TRIAC) is used to connect and disconnect a computer system's power supply unit from the power-line connection. This power-switching device is controlled by a battery-powered circuit. The battery-powered circuit monitors a contact pad, and powers up ...


8
Clark R Williams, Ching Lin Jiang: Two-mode oscillator. Dallas Semiconductor Corporation, Worsham Forsythe Sampels & Wooldridge, September 22, 1992: US05150079 (76 worldwide citation)

A low-power crystal-controlled CMOS oscillator wherein a long and wide additional transistor is provided in the first stage of the output amplifier. This prevents the output amplifier from diverting too much current from the primary amplifier stage during start-up.


9
Robert D Lee: One-wire bus architecture. Dallas Semiconductor Corporation, Worsham Forsythe Sampels & Wooldridge, May 11, 1993: US05210846 (75 worldwide citation)

A system architecture which provides efficient data communication, over a one-wire bus, with a portable data module which does not necessarily include any accurate time delay circuit whatsoever. The time delay circuit in the module can be extremely crude. An open-collector architecture is used, with ...


10
Robert D Lee, Robert W Mounger, John P Heptig: Low-power RF receiver. Dallas Semiconductor Corporation, Worsham Forsythe Sampels & Wooldridge, September 4, 1990: US04955038 (71 worldwide citation)

A RF receiver with extremely low standby power consumption. To minimize power consumption during standby, the analog input from the antenna circuit (including tank resonator) is connected directly to the inputs of a comparator.