1
Guoxiao Guo Guoxiao Guo
Guoxiao Guo, Jie Yu: Zoned servo system. Western Digital Technologies, July 3, 2012: US08213106 (112 worldwide citation)

A disk drive includes a plurality of servo zones of different servo frequencies and a read channel. The disk drive also includes a frequency detector operable to determine a servo frequency associated with a servo sector. The read channel includes a voltage-controlled oscillator operable to provide ...


2
William N Reining: Apparatus and method for restricting the discharge of fasteners from a tool. Intellectual Property, Quarles & Brady, October 29, 2002: US06471106 (309 worldwide citation)

A device for discharging fastening elements, and a method of preventing a device from discharging fastening devices into human flesh, are disclosed. The device includes a coil proximate a location of discharge, a capacitive element coupled in parallel with the conductive coil to form a resonant tank ...


3
Lin S Lee: Mandarin speech input method for Chinese computers and a mandarin speech recognition machine. National Science Council, Cushman Darby & Cushman, June 15, 1993: US05220639 (164 worldwide citation)

A method of inputting Chinese characters into a computer directly from Mandarin speech which recognizes a series of monosyllables by separately recognizing syllables and Mandarin tones and assembling the recognized parts to recognize the mono-syllable using Hidden Markov Models. The recognized mono- ...


4
Fuyun Ling, Thomas A Sexton, Gene Bruckert: Method and apparatus for coherent communication reception in a spread-spectrum communication system. Motorola, Richard A Sonnentag, Kevin A Buford, April 8, 1997: US05619524 (150 worldwide citation)

A method and apparatus is provided for facilitating coherent communication reception. A received reference symbol coded spread spectrum communication signal is despread with a spreading code to derive a stream of reference samples and a stream of data samples. The channel response is estimated by ut ...


5
Frederick K Blades: Method and apparatus for detecting arcing in AC power systems by monitoring high frequency noise. Siemens Energy & Automation, March 17, 1998: US05729145 (130 worldwide citation)

Arcing in an AC power system is detected by monitoring the power waveform for wideband high-frequency noise, and examining the detected noise for patterns of variation in its amplitude synchronized to the power waveform. A narrowband, swept-frequency detector and synchronous averaging may be employe ...


6
Rishi Mohindra: Direct conversion receiver. U S Philips Corporation, Michael E Marion, December 10, 1996: US05584068 (124 worldwide citation)

A direct conversion receiver for FSK modulated digital signals has two quadrature signal paths (I, Q) and an a.f.c. loop for controlling a local frequency generator. A control signal for the a.f.c. loop is produced by an offset frequency detector, and is in the form of a unipolar series of pulses ha ...


7
Roger W Jelliffe, Jack D Crone: Infusion controlling apparatus and method. University of Southern California, Nilsson Robbins Dalgarn Berliner Carson & Wurst, January 5, 1982: US04308866 (109 worldwide citation)

Portable electronic medical apparatus for controlling the flow rate of a fluid for medically treating a patient may receive flow rate information representing sequences of up to 20 flow rates and their durations from an individual and from an electronic data processor, and operate continuously witho ...


8
John B Berry, James R Booth, Keith B Hardin, John P Richey: Method and apparatus for providing a clock generation circuit for digitally controlled frequency or spread spectrum clocking. Lexmark International, John A Brady, April 2, 2002: US06366174 (104 worldwide citation)

An improved clock generation circuit is provided that operates with a single input clock frequency, and includes a Phase Locked Loop circuit (PLL) with a digital accumulator in the feedback loop, in which either the Most Significant Bit or the Carry Bit of the binary adder is used as the modulated f ...


9
Yoichiro Minami: Direct conversion receiver with dithering local carrier frequency for detecting transmitted carrier frequency. NEC Corporation, Sughrue Mion Zinn Macpeak & Seas, February 25, 1992: US05091921 (99 worldwide citation)

An FSK receiver includes first and second channel paths to which the received FSK signals are applied. Each channel path includes a mixer circuit, a low-pass filter connected to the mixer circuit, and a limiting amplifier connected to the low-pass filter. A voltage-controlled oscillator generates a ...


10
Sidney J Fox, Filip J Yeskel, William J Zimmermann Jr: Universal thresholder/discriminator. International Business Machines Corporation, Joscelyn G Cockburn, Carl M Wright, November 19, 1985: US04554593 (97 worldwide citation)

Image processing system for reproducing on a bilevel medium documents having mixed formats (text, halftone, and continuous tone) by selective thresholding of scanned pel values based on detected characteristics of the material to be reproduced. The characteristics of interest for each pel include it ...