Abstract: A thermally enhanced chip carrier package with a built-in heat sink for semi-conductor integrated circuit chips. A circuit substrate is formed of a suitable thermoplastic such as PPS or LCP with a center opening and a metal attachment ring for attaching a heat sink to either the top or bottom thereof with solder. A casing is further formed on the substrate outwardly of the aperture and the heat sink mounted thereacross, the casing being comprised of the suitable thermoplastic and being chemically fused to a portion of the circuit substrate to create a moisture seal therebetween. An encapsulant for filling the cavity within the casing and a lid may also be utilized to further secure and seal the chip mounted to the heat sink secured therein.
Type:
Grant
Filed:
February 6, 1995
Date of Patent:
July 22, 1997
Assignee:
Amkor Electronics, Inc.
Inventors:
John R. McMillan, William H. Maslakow, Abram M. Castro
Abstract: An encoding method and apparatus for conditioning video signal to reduce contouring in images reproduced from compressed video signal involves preconditioning the video signal, prior to completion of compression, to effectively amplify noise in portions of the video signal representing relatively smooth image areas. In an exemplary embodiment, a memory is programmed at respective address locations to remap amplitude values of a digitized signal applied as addresses to the memory. The programming is arranged to enlarge a range of lower amplitude values, and to effectively pass higher amplitude values unaltered.
Abstract: A blood pressure measuring system includes a transducer having first and second sensors adapted to be mounted above the artery of a patient with the second sensor more distal relative to the direction of blood flow than the first sensor. A processor digitizes the signals from the first and second sensors and determines when the second signal is phase shifted about 90 degrees relative to the first signal for determining the occurrence of the Korotkoff sound. The transducer comprises a film of a material having piezoelectric properties and at least two spaced apart electrodes on one surface of the film and a third electrode on the opposite side and opposed to the two electrodes.
Abstract: An improvement on locomotive bubble-type fuel level measuring systems tests or monitors the integrity of the bubble-type pneumatic system by observing the rate of bubble formation, in addition to gauging fuel level. A bubble-type fuel level detection system bubbles a volume of air through a bubble tube. As air exits from the bottom of the tube, bubbles form in the fuel. These bubbles cause small variations in back-pressure in the tube as each bubble grows in size and eventually breaks free from the opening in the tube. The frequency these variations is proportional to the airflow or bubble rate at the bottom of the bubble tube such that pneumatic leaks or other problems can be detected by declaring a problem condition if the bubble rate falls below a predetermined threshold.
Abstract: A remote control access system which may be in the form of a security system or a convenience system for buildings and vehicles to thereby enable access opening and closing of buildings and vehicles. The system is operable on a remote control basis and comprises one or more hand held remote transmitters and a receiver unit located at or near the building or in the vehicle. The receiver is operable in conjunction with a control unit which contains a microprocessor capable of performing control functions and decoding functions. The remote control access system is unique in that it enables the user to electronically program into or delete from the receiver a digital code or so-called encoding signal from any of a plurality of transmitters. Each transmitter may contain not only different numbers of digital codes, but also a code generated by an entirely different method of encoding.
Abstract: A sub-que code (Q subcode) data read circuit for a compact disc reproduction apparatus is capable of converting sub-que code data of serial bits output from the compact disc-digital signal processor of a CD-ROM drive into parallel bytes and adjusting positions of bits in the parallel bytes, thereby enabling a microcomputer to read the sub-que code data through the sub-que code data read circuit without directly reading the data. Accordingly, the load of the microcomputer can be reduced, thereby enabling data processing at a high speed. In particular, the program used in the microcomputer can be simplified so that the CD-ROM drive can reproduce data at a high speed.
Abstract: A deflection waveform correction signal generator comprises a parabolic shaped signal generator and first and second sawtooth shaped waveform generators. The first horizontal frequency sawtooth shaped waveform is generated by a clipped retrace pulse. The first sawtooth generator has an output coupled to an integrating circuit for generating a parabolic shaped signal. The sawtooth generator and sawtooth waveform integrator are reset at a horizontal rate by reset pulses of differing duration. The different duration of reset pulses results in the parabolic signal having regions of non-parabolic shape. A control loop is coupled to the integrator and measures and maintains a pulse duration generated responsive to the parabolic signal. A control current is generated responsive to the pulse duration and is coupled to the integrator input to cause the parabolic shaped signal to be generated at a predetermined time interval.
Abstract: A local bus interface for providing high-speed data transfer between the local bus of a personal computer and one or more data storage devices. The local bus interface bypasses the standard expansion bus (ISA, EISA, Micro Channel) on the personal computer, is directly connected to the local bus, and is transparent to the system software.
Abstract: A modular jack for interfacing a modular plug with a printed circuit board. The jack has a first outer housing segment and a second outer housing segment with a plurality of contacts embedded within the second segment and having pin portions projecting therefrom about one terminal end and contact portions projecting therefrom about the other terminal end with the contact portions being insertable within the first housing segment to make interface contact and mating with a male plug. The modular jack may include a shield with an electrically conductive compliant member about the edge of the shield to make interface electrical connection with a panel when the modular jack is mounted in place.
Abstract: A slider of a closed-type compressor in which friction and abrasion of an inside circumferential surface of a slider shell and an outside circumferential surface of the slider can be reduced by forming a circular arc at both portions where the outside circumferential surface of the slider contacts the inside circumferential surface of the slider shell. The slider of the closed-type compressor has a circular arc portion at the inside portion of both ends of the outside circumferential surface of the slider and both outside portions of a central groove of the slider, respectively.
Abstract: An apparatus for positioning a workpiece comprises a plurality of pedestals each comprising a first portion having a first width, a second portion having a second width greater than the first width, and a chamfered portion interposed between the first and second portions. The inventive apparatus further comprises a support having a plurality of holes therein for receiving the plurality of pedestals, the support further having a plurality of chamfered portions with one the chamfered portion about a periphery of each the hole. A base urges the chamfered portions of the pedestal away from the chamfered portions of the support.
Abstract: Polymers, oligomers or copolymers, having a dendrimer structure and containing electronegative heteroatoms, such as etheric oxygens, capable of complexing with cationic species, for use in ionically-conductive polymeric electrolytes, Relatively high ambient conductivity is a feature of such electrolytes.
Type:
Grant
Filed:
June 6, 1996
Date of Patent:
July 15, 1997
Assignee:
Gould Electronics Inc.
Inventors:
Mark L. Daroux, David W. Kurz, Morton Litt, Anastasios Melissaris, Donald G. Pucci
Abstract: An improved tension arm driving apparatus for a video cassette tape recorder capable of achieving a stable tape running state by preventing a tape jog in a high speed tape rewinding mode, includes a loading gear member for winding a tape around a head drum, and a high speed winding member for rotating upper and lower gears at the same time in cooperation with the loading gear member, so that the upper and lower gears integrally rotate in the high speed winding mode and tape jogging is prevented during the high speed winding mode.
Type:
Grant
Filed:
November 15, 1995
Date of Patent:
July 15, 1997
Assignee:
LG Electronics Inc.
Inventors:
Haksun Hwang, Inki Cheon, Sang Jig Lee, Pohyoung Koh, Hyeoksoo Park, Sungwoo Choi
Abstract: A method of indicating a degree of incoming threat to an electronically secured area consists of the steps of sensing via sensor a degree of threat delivered to a secured area and generating an electric signal proportional to the degree of threat; analyzing the signal to determine if it is a low degree of threat or a high degree of threat; and producing either a first pulse representing low degree of threat or separately producing the first pulse and a second pulse representing a signal having both low degree of threat and high degree of threat.
Abstract: In order to simplify the quick and easy re-construction of a clean room which is constructed of prefabricated panels that are adapted to be connected to stud members, and to avoid the use of screws and bonds, a trim system which features a plurality of different trims is provided. By selecting a suitable trim from the plurality, and fitting it onto an edge of a panel by way of a channel or receiving portion provided thereon, it is possible to use existing studs and double finger T-clips to combine a variety of different panels together while taking advantage of a propriety type connection flanges which may be formed on some of the panels which are available.
Type:
Grant
Filed:
January 11, 1995
Date of Patent:
July 8, 1997
Assignees:
Sony Corporation, Sony Electronics Inc.
Abstract: A method and system for compressing video in a manner characteristic of photographic film compression. One embodiment of the invention is a video camera including circuitry for compressing the raw video signals generated thereby to introduce film-like compression characteristics thereto. Such video camera preferably includes controls allowing smooth, gradual, film-like compression of video image data recorded thereby, in response to user variation of no more than a small number of compression parameters. In other embodiments, the invention is a video post-production editing system which performs film-like compression on an analog or digital video signal. Such compression can be performed to match the dynamic range of a first, film-derived video segment to that of a second, non-film-derived video segment. Preferably, the invention implements film-like compression digitally, by employing digital circuitry.
Type:
Grant
Filed:
October 12, 1993
Date of Patent:
July 8, 1997
Assignees:
Sony Corporation, Sony Electronics, Inc.
Abstract: A system and method for analyzing an electrocardiogram (ECG) acquires ECG time series data from an examinee's ECG signal in a real time, subjects the acquired ECG time series data to a base line filtering, reconstructs an ECG attractor on the basis of the base line-filtered time series data by use of qualitative and quantitative analysis methods, and derives a correlation dimension value on the basis of the reconstructed ECG attractor, whereby the examinee's health and psychological conditions can be accurately diagnosed on the basis of the reconstructed attractor and correlation dimension value.