| Patent Number |
Title Of Patent |
Date Issued |
| RE32759 |
Backup material for small bore drilling |
October 4, 1988 |
| A backup material for small bore drilling in hard .[.crystalline.]. materials, such as multilayer circuit boards containing polyimide/glass, polyimide kevlar or modified epoxy BT/glass, includes at least one layer of hard crystalline material. Standard LCOA material with an additional |
| D287233 |
Hydroponic trough |
December 16, 1986 |
|
| D252635 |
Portable learning unit |
August 14, 1979 |
|
| 5740035 |
Self-administered survey systems, methods and devices |
April 14, 1998 |
| Self-administered survey devices include a display, an input device, a memory and a control device which controls the display to show at least one survey question and control the memory to store a response to the at least one question. A system and method for carrying out self-administer |
| 5235414 |
Non-obtrusive programming monitor |
August 10, 1993 |
| A meter for unobtrusively monitoring the tuning of a home entertainment center. The device is able to work with remote controls of components of the center. The present invention receives signals from the remote control(s), decides to which component the signal was intended, sends an |
| 5153882 |
Serial scan diagnostics apparatus and method for a memory device |
October 6, 1992 |
| A scan diagnostics apparatus and method is useful in connection with the memory integrated circuit. A shift register is provided which can receive data in parallel from the input register and output the data serially. The shift register can receive serial data and output in parallel eith |
| 5067106 |
Radiation detection and signal delay circuitry for protecting recorded data |
November 19, 1991 |
| A radiation hardened or fail safe circuit is coupled between a peripheral data storage device, for example a disk drive, and its associated controller. The circuit includes an AND logic gate with two inputs: a write enable signal from the controller; and a sensing input logic signal |
| 5027355 |
Logic circuit and design method for improved testability |
June 25, 1991 |
| A method for designing integrated circuits for improved testability. A main logic function operable in initialization and test modes is defined in terms of component logic macros. Testability circuitry for generating CLEAR, CLEAR0 and CLEAR1 testability signals is also defined. The CLEAR |
| 5019899 |
Electronic data encoding and recognition system |
May 28, 1991 |
| The disclosure relates to an apparatus and method for creating digital signatures from frames of selected video segments such as TV commercials by a digitizing, compression and selection process which produces a multi-digit signature from each frame. The signatures are stored in a me |
| 4999771 |
Communications network |
March 12, 1991 |
| Data messages are transmitted between host data processors and a communications processor. Data messages from a communications processor are transformed for the host processor to which the message is assigned. Data messages from a host processor are transformed for the communications |
| 4970643 |
Mechanism for lock-up free cache operation with a remote address translation unit |
November 13, 1990 |
| It is known to use a miss information holding register in a cache memory organization to store the details of a CPU load request on a cache miss so that the cache may accept subsequent requests pending the receipt of data in respect of the first request. In the subject invention, this |
| 4958371 |
Method and apparatus for determining when a telephone handset is off-hook |
September 18, 1990 |
| Apparatus in an automatic telecommunications system which communicates between a central location and at least one remote location over the switched telephone network, senses changes in loading of the telephone line which correspond to a telephone going off-hook, to serve as an indic |
| 4958214 |
Protective carrier for semiconductor packages |
September 18, 1990 |
| An assembly is disclosed for releasably mounting a semiconductor package with respect to a rigid carrier, in a predetermined alignment with the carrier to protect the package leads and position the leads for electrical testing. Two substantially identical dielectric frames are positioned |
| 4941119 |
Method and apparatus for predicting an overflow in an integer multiply |
July 10, 1990 |
| An overflow prediction scheme is provided to operate in parallel with an integer multiply within a computer to predict overflow conditions of the resultant register. The operands to be multiplied are examined to determine the position of the most significant bit. The position values |
| 4931722 |
Flexible imbedded test system for VLSI circuits |
June 5, 1990 |
| A logic chip contains a plurality of ranks of flip-flops with combinational logic elements connected in between the flip-flop ranks. Each flip-flop has at least two distinct data paths. The first path is for the normal passage of data to combinational logic units following the rank of |
| 4922434 |
Linear interpolation for a component placement robot |
May 1, 1990 |
| Linear interpolation is applied to each pair of placement coordinates in a data driven surface mount component placement robot in order to eliminate component misplacement due to board artwork dimensional inaccuracies. The linear interpolation algorithm is derived by measuring the actual |
| 4922184 |
Apparatus and process for the simultaneous continuity sensing of multiple circuits |
May 1, 1990 |
| An apparatus for simultaneously testing multiple integrated circuits includes a sensing circuit associated with each of the tested circuits. Each sensing circuit includes a differential amplifier with its positive input connected to the input of the test circuit, and its inversion input |
| 4912709 |
Flexible VLSI on-chip maintenance and test system with unit I/O cell design |
March 27, 1990 |
| This application describes a peripheral cell structure for VLSI chips that requires the use of standard cells having both input and output capability connected to nearly all of the signal carrying pins. The cells function is alterable (to input or output and to where the data input signa |
| 4912552 |
Distributed monitoring system |
March 27, 1990 |
| A system is disclosed which may be used for collecting television channel tuning data, household purchase data, VCR channel usage data and the like; on site at a plurality of preselected households, wherein the system concentrates and transmits the collected data to a central site in a f |
| 4905371 |
Method for cleaning process control |
March 6, 1990 |
| An apparatus and method for a cleaning process control is disclosed. The apparatus includes a printed wire circuit board that is made on a Pyrex glass or other transparent substrate. Components are attached to the printed wire circuit board and then the circuit card assembly which is |
| 4897764 |
Conductive cooling cup module |
January 30, 1990 |
| A metal heat spreading cup, hereinafter referred to as a "conductive cup module" ("CCM"), is utilized as part of the interface between at least one semiconductor being cooled and a pedestal, sometimes referred to as a "boss", coupled to a cooling medium. The semiconductor being cooled is |
| 4879672 |
Method and apparatus for testing runout velocity and acceleration on a surface |
November 7, 1989 |
| Disclosed is a Runout Velocity and Acceleration tester which converts an analog acceleration signal to a digital signal. The individual bits of digital data are then transformed into an exponential function. The exponential function that results is then solved for the worst case acce |
| 4878197 |
Data communication apparatus |
October 31, 1989 |
| A data communications apparatus transfers data between two channels, the data formats of each being incompatible with the other. Index registers receive index addresses from each channel to access a pointer in a pointer RAM. The pointer addresses a data location in a data RAM to permit d |
| 4860288 |
Clock monitor for use with VLSI chips |
August 22, 1989 |
| This application teaches that more accurate measurements of clock skew can be had by providing a clock monitor pin directly connected to the clock bus internal to the VLSI chip. |
| 4847800 |
Input register for test operand generation |
July 11, 1989 |
| Sequential faults are not tested for adequately when using test input operands generated in the chip from a random number generator to test the logic circuits in a very large scale integrated (VLSI) chip. Accordingly this application teaches the efficient construction of a test operand |
| 4845741 |
Modem ringing supression circuit |
July 4, 1989 |
| An automatic telecommunication system includes a central location and at least one remote location where a data reporting system including a modem is situated. The central location establishes communications over the switched telephone network to the modem coupled to a telephone line at |
| 4827611 |
Compliant S-leads for chip carriers |
May 9, 1989 |
| A compliant S-shaped lead for resiliently supporting an integrated circuit chip package in spaced relation generally parallel to a printed circuit board. The S-lead bends and twists to absorb forces which would otherwise be exerted on solder joints due to temperature cycling and vibratio |
| 4820927 |
Electron beam source employing a photo-emitter cathode |
April 11, 1989 |
| A scanned electron beam system employs an electron beam source using an NEA activated photo-emitter as the cathode. The activated photo-emitter cathode produces a pre-shaped electron beam having a relatively small spot focussed on a target plane. The beam is selectively deflected to scan |
| 4816904 |
Television and market research data collection system and method |
March 28, 1989 |
| A data gathering system includes a plurality of remote units which are controlled from a central location. Each of the remote units is attached to a television receiver which is generally but not necessarily attached to a cable system. Each of the remote units can function to determine |
| 4791602 |
Soft programmable logic array |
December 13, 1988 |
| A programmable logic array is constructed of independently controllable logic building blocks of two types and special output logic to perform desired logic functions. The first building block is a functional element which is capable of performing any logical function of its input data t |
| 4785412 |
Double precision approximate quotient network |
November 15, 1988 |
| A double precision approximate quotient network determines the quotient of a 2n bit number and an n bit number where the n bit number has a value of 2.sup.n-1 -2, 2.sup.n-1 -1, 2.sup.-1, or 2.sup.n+1. Apparatus determines the 2's complement and 2 times the 2's complement of the n most |
| 4785161 |
Laser machining for producing very small parts |
November 15, 1988 |
| This invention teaches a method for producing small machined parts by laser including a description of how to avoid sensitive edges of the work piece being machined and how to control beam size for maintaining uniform cavity depth over a relatively long work piece and also how to generat |
| 4782273 |
Automatic part location and mechanical testing of part insertion |
November 1, 1988 |
| This invention provides for a method and apparatus for assembly of complex systems by human operators with the assistance of automatic machinery. The machinery employes a lighted probe to direct the operator to insert a part of the lighted location and the machinery tests for proper seat |
| 4779198 |
Audience monitoring system |
October 18, 1988 |
| Each doorway or passageway between rooms in which a device may be located is fitted with another device which detects motion and the direction of the motion through the passage. Each room is equipped with a signal emitter that is controlled by the motion detector at the room's passage. |
| 4771251 |
Ring oscillator |
September 13, 1988 |
| An improved ring oscillator for VLSI chips is shown, formed at the chip periphery. It may have specific initiation gates and have additional parasitic capacitance added to the ring to enhance accuracy. The circuit elements used for the ring are the same as those used for more centralized |
| 4761731 |
Look-ahead instruction fetch control for a cache memory |
August 2, 1988 |
| Certain stored program digital computer systems employ a single central memory to which requests are made for individual instruction words stored within it. Certain types of these memories employ address queues in which requests may be temporarily stored when requests come in more rapidl |
| 4755147 |
Flex head connector with ground plane |
July 5, 1988 |
| A flexible head connector with a ground plane for connecting a daughter board to a mother board. |
| 4739398 |
Method, apparatus and system for recognizing broadcast segments |
April 19, 1988 |
| A method, apparatus and system are provided for recognizing broadcast segments, such as commercials, in real time by continuous pattern recognition without resorting to cues or codes in the broadcast signal. Each broadcast frame is parametized to yield a digital word and a signature |
| 4736520 |
Process for assembling integrated circuit packages |
April 12, 1988 |
| Automatic manufacture of integrated circuit packages including a leadless chip carrier is facilitated by providing, in strip form, flexible tape circuitry having a dielectric layer and a conductive layer. Through selective etching, regularly spaced central openings are formed in the |
| 4734041 |
Electrical power connector |
March 29, 1988 |
| An electrical power connector for PC boards or bus bars having low insertion force and low voltage drop across the connector. The connector features a female receptacle having a double set of opposing rows of multipoint spring contacts mating with a two-tiered male plug. The spring c |
| 4728799 |
Height measurement and correction method for electron beam lithography system |
March 1, 1988 |
| An improved method of height measurement and correction for a two-stage deflection ("fly's eye" lens) electron beam accessed lithography system is provided which employs a height measuring transducer such as a capacitance gauge or an optical gauge and a two position fiducial calibration |
| 4718019 |
Election beam exposure system and an apparatus for carrying out a pattern unwinder |
January 5, 1988 |
| In an electron beam system in which the beam is exposed in selected prescribed patterns on a target surface, stored pattern data specifies the location of the pattern as coordinates on the target plane of a reference point in the pattern, specifies the shape of the pattern as a code |
| 4708660 |
Connector for orthogonally mounting circuit boards |
November 24, 1987 |
| A connecting device is disclosed for electrically and mechanically linking multiple circuit boards arranged in two perpendicular stacks. The connecting device includes two identical connectors, each with a plurality of outwardly extended electrical socket contacts, and a pair of opposite |
| 4694178 |
Multiple channel electron beam optical column lithography system and method of operation |
September 15, 1987 |
| The invention provides an improved direct-write/read charged particle beam lithography/readout system employing multiple channel charged particle beam optical columns wherein a plurality of individually controlled, single deflector stage charged particle beam optical columns are operated |
| 4686531 |
Capacitance height gage applied in reticle position detection system for electron beam lithograp |
August 11, 1987 |
| A capacitance height gage for positioning the reticle of an electron beam lithography apparatus. The gage includes a hybrid circuit substrate carrying four measuring and two reference capacitor circuits. Each has a driven plate, the four measuring plates disposed opposite the object |
| 4683366 |
All electrostatic electron optical sub-system for variable electron beam spot shaping and method |
July 28, 1987 |
| An all-electrostatic variable spot charged particle (electron) beam shaping sub-system which is compact and of much smaller size than known similar systems designed for the same purpose and operating with magnetic lenses. The improved electrostatic variable spot-shaping sub-system does n |
| 4677458 |
Ceramic IC package attachment apparatus |
June 30, 1987 |
| An integrated circuit package includes a leadless ceramic chip carrier and four connectors mounted thereto. The chip carrier has a rectangular surface with a plurality of conductive pads at its periphery. Each connecter includes a set of elongate conductive arms attached to the conta |
| 4675528 |
Method for measurement of spotsize and edgewidth in electron beam lithography |
June 23, 1987 |
| The technique of measuring the spotsize and edgewidth of an electron beam by incrementally scanning the beam through discrete scan locations across a sharp edge is improved by processing the resulting beam current signals directly rather than the differentiated beam current signal. A lin |
| 4667301 |
Generator for pseudo-random numbers |
May 19, 1987 |
| Pseudo-random numbers (PRNs) have great importance in data processing and encryption. The standard technique for generating PRNs on computers at the present time involves software implementation of recursively computing PRN.sub.n+1 =(PRN.sub.n)(b) mod M, in real number field which means |
| 4667108 |
Impedance matched and thermally cooled deflection amplifiers for charged particle beam apparatus |
May 19, 1987 |
| An improved deflection amplifier interconnection circuit structure for charged particle beam write/read apparatus having a deflector stage wherein the charged particle apparatus is mounted within an evacuated housing by a support member. Transmission line-type printed wiring conducto |
