Double-buffered systems and methods
What is claimed is: 1. A system, comprising: an oscillator connected to provide a plurality of output pulses at a substantially regular interval; a counter chain; user memory connected to be read from... Read More
Inventors: Rodriguez, Louis; Deierling, Kevin E.;, Assignee: Dallas Semiconductor Corporation (Dallas, TX) |
Electronic musical instrument with a note detector capable of detecting a plurality of notes sounded simultaneously
It is therefore an object of the present invention to provide a digitalized note detector which obtains respective notes of one or more input sounds in a short time, and operates in a stabilized manne... Read More
Inventors: Iwaooji, Makoto;, Assignee: Casio Computer Co., Ltd. (Tokyo, JP) |
Optical RF spectrum analyzer
The present invention encompasses an optical RF spectrum analyzer which is suitable for determining the real-time spectral frequency content of radar return signals. The optical RF spectrum analyzer i... Read More
Inventors: Oh, Tae Kwan;, Assignee: The United States of America as represented by the Secretary of the Navy (Washington, DC) |
Method of digital demodulation of a composite signal
In order to alleviate these drawbacks, the invention proposes a method of digital demodulation of a composite signal comprising a first omnidirectional baseband signal, a first subcarrier at a first f... Read More
Inventors: Riccardi, Guy; Calvano, Philippe; Nicolas, Jean-Luc;, Assignee: Thomson - CSF (Paris, FR) |
Microprocessor based BCH decoder
Accordingly, it is an object of the present invention to provide an improved BCH decoding apparatus and method which is based on microprocessor circuits, is relatively inexpensive, and performs the BC... Read More
Inventors: Foster, Robert I.; Longbrake, Beth A.;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Microprocessor with novel instruction for signaling event occurrence and for providing event handling information in response thereto
The present invention provides a method and apparatus for signaling the occurrence of an event in a microprocessor via a microinstruction issued to an execution unit upon detection of a condition givi... Read More
Inventors: Boggs, Darrell D.; Rodgers, Scott D.;, Assignee: Intel Corporation (Santa Clara, CA) |
Compare and exchange operation in a processing system
In one embodiment, the present invention involves for providing a read-modify-write operation by the use of an instruction, in which two of the three required source operands are specified in the inst... Read More
Inventors: Mittal, Millind; Waldman, Eval;, Assignee: Intel Corporation (Santa Clara, CA) |
Serial communications interface that supports multiple interface standards
OF THE PREFERRED EMBODIMENT In brief overview, FIG. 1 is a block diagram of an embodiment of a DTE 10 having a DTE interface apparatus 12 and cable to communicate with a DCE 22, 26, 30, 34 using any ... Read More
Inventors: Cohen, Gary L.; Smader, Scott Kingsley;, Assignee: Telebit Corporation (Cupertino, CA) |
Transparent memory mapping mechanism for a digital signal processing system
The present invention is directed to a digital processing system which can operate in any one of three addressing modes. The system includes first and second digital processors each of which being ope... Read More
Inventors: Andrews, Lawrence P.; Arias, Derrick L.; Linger, Judith M.; Mandalia, Baiju D.; Ortega, Oscar E.; Sinibaldi, John C.;, Assignee: International Business Machines Corporation (Armonk, NY) |
Locking of computer resources
We claim: 1. A computer processor comprising: one or more registers R1 for holding values that identify locks for computer resources, wherein each register R1 is modifiable by a locking operation only... Read More
Inventors: Joy, William N.; O'Connor, James Michael; Tremblay, Marc;, Assignee: Sun Microsystems, Inc. (Palo Alto, CA) |
Digital error measuring circuit for shading and registration errors in television cameras
The invention combination overcomes the shortcomings of the prior art error measurement systems by providing digital means for accurately and reliably detecting spatial scan errors and video levels wi... Read More
Inventors: Griesshaber, Karl H.;, Assignee: Ampex Corporation (Redwood City, CA) |
Transparent error detection in half duplex modems
OF THE INVENTION In reference now to FIG. 1, a local modem 100 is connected to a remote modem 200 through a two-wire communication channel 300 for exchanging data between DTE's (data terminal equipme... Read More
Inventors: Betts, William L.; Martinez, Kenneth;, Assignee: Paradyne Corporation (Largo, FL) |
Adaptive per-survivor processor
OF PREFERRED EMBODIMENTS The Viterbi algorithm or its sub-optimal algorithms that utilizes Per-Survivor Processing (PSP) technique typically requires a mechanism to choose the best channel estimation... Read More
Inventors: Sadjadpour, Hamid R.;, Assignee: AT&T Corp (New York, NY) |
Image sensing apparatus having function of automatically matching focus and exposure in response to video signal
Therefore, an object of the present invention is to provide an image sensing apparatus which can satisfactorily perform automatic focusing control and automatic iris control so that the amount of ligh... Read More
Inventors: Takuma, Masao; Kawakami, Kiyotada;, Assignee: Sanyo Electric Co., Ltd. (Osaka, JP) |
Signal processing circuit for a simultaneous electronic endoscope apparatus
Accordingly, it is an object of the present invention to eliminate the above-described problems in the related art and to provide a signal processing circuit of a simultaneous electronic endoscope app... Read More
Inventors: Suzuki, Shigeo; Okada, Fujio;, Assignee: Fuji Photo Optical Co., Ltd. (Saitama, JP) |
Multiple parallel digital data stream channel controller architecture
Thus, a general purpose of the present invention is to provide a peripheral I/O controller supporting multiple, parallel variable bandwidth data streams over a high total bandwidth data transfer path ... Read More
Inventors: Gifford, James K.; Begur, Sridhar; Lewis, Adrian; Spencer, Donald J.; Kilbourn, Thomas E.; Gochnauer, Daniel B.;, Assignee: Diamond Multimedia Systems, Inc. (San Jose, CA) |
Method of calibrating and determining the rotational and fluid delivery velocities of a peristaltic fluid pump
Accordingly, it is an object of the present invention to provide a control for a peristaltic pump which can be used for a dual operation, either as a flow meter or as a dispenser. The accuracy of the ... Read More
Inventors: Wolff, Donald L.; McCauley, Porter T.; Stiefel, Paul; Takacs, Gyoergy J.; Adams, Roman A.;, Assignee: Cole-Parmer Instrument Company (Chicago, IL) |
Asynchronous gain adjustment for PRML disk drive systems
OF THE PREFERRED EMBODIMENT In FIG. 1 there is shown a partly schematic block diagram of parts of a data storage disk file 10 including a data storage medium generally designated as 12 and an interfa... Read More
Inventors: Coker, Jonathan D.; Galbraith, Richard L.;, Assignee: International Business Machines Corporation (Armonk, NY) |
Signal quality detector and methods thereof
OF A PREFERRED EMBODIMENT Generally the instant disclosure deals with a signal quality detector and analogous methods thereof that are arranged and constructed for operation on a signal, preferably a... Read More
Inventors: Chen, Weizhong;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Sampled amplitude read channel employing a user data frequency synthesizer and a servo data frequency synthesizer
In a sampled amplitude read channel for reading user data and embedded servo data in a magnetic disk storage device, a plurality of components including a timing recovery circuit, an automatic gain co... Read More
Inventors: Tuttle, Tyson; Vishakhadatta, Diwakar; Hein, Jerrel P.; Welland, David R.; Reed, David E.; Behrens, Richard T.; Bliss, William G.; Romano, Paul M.; Dudley, Trent O.; Zook, Christopher P.;, Assignee: Cirrus Logic, Inc. (Fremont, CA) |
Fast charge and thermal asperity compensation circuit
Broadly, the present invention comprises a read circuit for an MR head providing rapid differential recovery of the circuit during initial activation to the read mode and also following thermal asperi... Read More
Inventors: Barber, Earl J.; Castellucci, Gregg R.;, Assignee: International Business Machines Corp. (Armonk, NY) |
Digital signal processor with efficiently connectable hardware co-processor
This invention is a data processing system including a digital signal processor core and a co-processor. The co-processor has a local memory within the address space of the said digital signal process... Read More
Inventors: Hocevar, Dale E.; Gatherer, Alan; Lemonds, Jr., Carl E.; Hung, Ching-Yu;, Assignee: Texas Instruments Incorporated (Dallas, TX) |
Image signal restoring apparatus
It is a general object of this invention to provide an image signal restoring apparatus which is capable of solving the above-stated problems. It is a more specific object of the invention to provide ... Read More
Inventors: Hoshi, Hidenori; Fukuzawa, Keiichi; Ishii, Yoshiki;, Assignee: Canon Kabushiki Kaisha (Tokyo, JP) |
Two-stage mono-mode optical fibre laser
According to a first aspect the present invention provides a laser comprising: an optical source to provide a pump signal at a wavelength of .lambda..sub.1 ; a first waveguide portion which when optic... Read More
Inventors: Wyatt, Richard; Armitage, Jonathan R.;, Assignee: British Telecommunications PLC (London, GB2) |
Amplitude modulation of control signals over electrical power lines utilizing the response of tuning fork filters
We claim: 1. An apparatus for transmitting signals over an existing power network comprising a transmitter (A) and a receiver (B) adapted to be connected to said network, a power source for each of sa... Read More
Inventors: Lechner, Heinz; Taillens, Jean-Francois;, Assignee: Transec Financiere S.A. (Luxembourg, LU) |
Transformer coupler for communication over various lines
In accordance with the present invention, apparatus for power-line communications is disclosed. The power-line communication apparatus comprises; modulator and demodulator means for modulating or demo... Read More
Inventors: Abraham, Charles;, Assignee: |
Video signal monitoring device and method
What is claimed is: 1. A device for distinguishing odd numbered horizontal sync pulses from even numbered horizontal sync pulses in a video signal in which the horizonal sync pulses are divided into a... Read More
Inventors: Blair, Bruce A.;, Assignee: Lenco, Inc. (Jackson, MO) |
Infrared video camera shading correction device
Accordingly, it is an object of the invention to provide an infrared video camera shading correction device which is capable of maintaining a right shading correction even if the inside temperature of... Read More
Inventors: Seto, Toshiki;, Assignee: Mitsubishi Denki K.K. (Tokyo, JP) |
Method of adjusting read-out condition and/or image processing condition for radiation image
The primary object of the present invention is to provide a method of adjusting a read-out condition and/or an image processing condition for a radiation image, which enables obtaining a visible repro... Read More
Inventors: Shimura, Kazuo;, Assignee: Fuji Photo Film Co., Ltd. (Kanagawa, JP) |
Signal waveform display device
It is an object of this invention to provide such a useful device for enabling the waveform of a video signal to be indicated on a display part of a television receiver. A first aspect of this inventi... Read More
Inventors: Suzuki, Motoyuki; Yamade, Shigemitsu;, Assignee: Matsushita Electric Industrial Co., Ltd. (Osaka, JP) |
I/O Systems 
