Did You Know...
...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 4933662 | Comparator having variable width comparisons A method of comparing two binary quantities, which includes comparing corresponding bits of each of the binary quantities and generating comparison signals to indicate equality and inequality of corresponding bits of the quantities. The comparison signals... | 06/12/1990 |
| 4868823 | High speed concurrent testing of dynamic read/write memory array A semiconductor read/write memory device has a normal mode of operation and a test mode. The test mode allows concurrent writing to a number of cells in the cell array so that test patterns may be rapidly loaded. The cell array is split into subarrays and... | 09/19/1989 |
| 4863561 | Method and apparatus for cleaning integrated circuit wafers The described embodiment of the present invention provides a method and device for cleaning the surface of a silicon wafer using dry gases. At least one of the gases provided is excited by passing the gas through a microwave plasma generator or by heating... | 09/05/1989 |
| 4864535 | Entry point address circuit for microcode rom A multiplexer (76) for coupling selected instruction word bits to a microcode memory (22) as entry point addresses. The multiplexer (76) receives sixteen bits from an instruction word register (10) and, for normal word formats, couples the opcode (40) por... | 09/05/1989 |
| 4862243 | Scalable fuse link element A fuse link (50) is formed using a method which offers greater scalability of the general conductor system used to wire the device. An oxide mask (36) having the shape of a desired fuse link is formed over a thin metallization layer (34). A barrier layer ... | 08/29/1989 |
| 4860290 | Logic circuit having individually testable logic modules A modular logic circuit is disclosed, where each of the modules may be selected for testing by means of a scan path within the module made up of serial register latches (SRLs), each SRL being connected to predetermined nodes in the module functional circu... | 08/22/1989 |
| 4855623 | Output buffer having programmable drive current The specification discloses output buffer circuitry (10) for providing selected output driving characteristics. A plurality of input terminals (13, 24 and 30) receive control and data signals. A plurality of interconnected driver transistors (20, 28, 36 a... | 08/08/1989 |
| 4851715 | Schottky-clamped transistor logic buffer circuit A high speed interstage STL buffer (27) is disclosed having a low threshold and high driving capability. A first Schottky-clamped grounded emitter transistor (28) receives input signals through a Schottky steering diode (38) and inverts the input signal. ... | 07/25/1989 |
| 4847792 | Process and apparatus for detecting aberrations in production process operations An apparatus and process for detecting aberrations in production process operations is provided. In one embodiment, operations of a plasma etch reactor (10) are monitored to detect aberrations in etching operations. A reference end-point trace (EPT) is de... | 07/11/1989 |
| 4830981 | Trench capacitor process for high density dynamic ram A dynamic one-transistor read/write memory cell employs a trench capacitor to increase the magnitude of the stored charge. The trench is etched into the silicon surface at a diffused N+ capacitor region similar to the N+ bit line, then thick oxide is grow... | 05/16/1989 |
| 4827448 | Random access memory cell with implanted capacitor region An N-channel MOS random access memory of the one transistor type is disclosed. The cell utilizes an ion implanted area beneath the capacitor dielectric to permit lower bias voltages on the capacitor. In one example, two levels of polycrystalline silicon a... | 05/02/1989 |
| 4823320 | Electrically programmable fuse circuit for an integrated-circuit chip A fuse circuit for an integrated circuit chip which includes a non-volatile memory element, a circuit programmer for the memory element, and a read circuit for detecting the programmed states of the memory element and providing output signal levels corres... | 04/18/1989 |
| 4811202 | Quadruply extended time multiplexed information bus for reducing the `pin out` configuration of a semiconductor chip package A digital processor system includes a processor, a memory and a memory interface between the processor and the memory. The memory stores data in one bit format but addresses the data in a second bit format. The interface to the memory includes a controlle... | 03/07/1989 |
| 4805138 | An unerasable eprom cell An electrically programmable memory cell of a type having a source, a drain, a floating gate and a control gate formed over a face of a semiconductor substrate in which a ring region of material doped similarly to the substrate encloses the source, drain ... | 02/14/1989 |
| 4792747 | Low voltage dropout regulator A high efficiency dropout regulator (60) drives an output transistor (22) with a PNP transistor (52) if the overhead voltage from input (14) to output (26) is below a predetermined voltage. If the overhead voltage exceeds the predetermined voltage, then a... | 12/20/1988 |
| 4792378 | Gas dispersion disk for use in plasma enhanced chemical vapor deposition reactor A chemical vapor transport reactor gas dispersion disk (20) for counteracting vapor pressure gradients to provide a uniform deposition of material films on a semiconductor slice (37). The disk (20) has a number of apertures (22) arranged so as to increase... | 12/20/1988 |
| 4791476 | Device for the composition of color component signals from luminance and chrominance signals and video display device comprising the application thereof A color signal is encoded into luminance and chrominance signals. Relationships between the luminance and chrominance signals, and the color components are computed. A color component signal is generated by matrixing these relationships. In addition, a si... | 12/13/1988 |
| 4787297 | Stacked robotic work cell process station A stacked robotic work cell process station is provided which includes first and second module chambers (14) and (26) which have associated therewith work surfaces (10) and (22). The first module chamber (14) is disposed above the work surface (22) in the... | 11/29/1988 |
| 4783811 | Method and apparatus for determining syllable boundaries In a text to speech system, digital text ASCII is examined for syllable boundaries to help accent generation for speech synthesis, and hyphenation in word processing. Digital allophone code characters in the form of a byte string are compared with prestor... | 11/08/1988 |
| 4782457 | Barrel shifter using bit reversers and having automatic normalization A barrel shifter for a floating point processing unit can be optimized by having an automatic normalization feature. A multi-stage shifting unit is employed with external circuitry to verify that only leading zeros would be shifted out before activating a... | 11/01/1988 |
| 4775870 | Non-impact printer A non-impact printer has a movable printhead carriage for traversing a print medium and has a bracket, also serving as a heat sink, pivotally connected to the printhead carriage. A non-impact printhead is secured to the bracket and positioned to contact t... | 10/04/1988 |
| 4769779 | Systolic complex multiplier A complex multiplier includes a carry-sum systolic array (26) of multiplier cells for processing a multiplicand therethrough in accordance with a modified Booths algorithm. The multiplier performs two multiplications and two addition/substraction operatio... | 09/06/1988 |
| 4766576 | Seismic source vibrator having improved sweep generator A sweep generator for a seismic source vibrator provides for any one of a variety of sweep signals governed by input parameters. Selected analytic functions may be entered which are solved to provide a plurality of sweep parameters. The sweep parameters m... | 08/23/1988 |
| 4758944 | Method for managing virtual memory to separate active and stable memory blocks A pointer, N, indicates an address in a virtual memory space of a demand paged memory including a plurality of virtual address pages and a fixed number of physical memory pages into which blocks of information can be written. A back-up memory store is pro... | 07/19/1988 |
| 4757438 | Computer system enabling automatic memory management operations A computer system is provided which enables automatic memory operations independently of a CPU. The computer system includes a virtual machine and a logical memory system which is accessed by the virtual machine through a binding register unit, enabling t... | 07/12/1988 |
| 4754421 | Multiple precision multiplication device A multiple precision multiplication device includes accumulators coupled to the output of an array multiplier. The accumulators store partial products which are then added back into partial products generating during succeeding multiplication steps. The f... | 06/28/1988 |
| 4753380 | Overdriven tractor-friction paper drive A paper web-moving system includes a friction-type drive roll mechanism cooperatively operating with a detachable tractor drive mechanism. In one embodiment, the paper first passes over and engages a pair of driven tractors at an angle with respect to the... | 06/28/1988 |
| 4745544 | Master/slave sequencing processor with forced I/O An array processor operating in the forced I/O mode includes a master controller (12) for generating sequenced commands for output to slave address generators (52) (54) and (62). The slave (52) and (54) operate in a data processing and a forced I/O mode. ... | 05/17/1988 |
| 4742511 | Method and apparatus for routing packets in a multinode computer interconnect network A method for routing user packets in a multinode interconnect network is disclosed. Each packet has a destination node (10). Each node (10) is connected by input and output lines (12) and has a plurality of packet storage links (34) and (56-60). Each link... | 05/03/1988 |
| 4356040 | Semiconductor device having improved interlevel conductor insulation A semiconductor device and method of manufacture employs an improved insulating layer to laterally separate conductive layers or regions. A relatively thick insulating layer is anisotropically patterned to form an electrode having a thick insulating layer... | 10/26/1982 |
| 4346265 | Annunciator An annunciator is disclosed which has an improved charging circuit for storing the energy of a ring signal received via an improved Schottky diode bridge rectifier, and an oscillator-driven variable divider which actuates an audible output device when the... | 08/24/1982 |
| 4318187 | Phase tolerant magnetic bubble memory sense amplifier A temperature compensated, phase tolerant sense amplifier for use in a magnetic bubble memory system in which current is applied to the detector resistors only during a bubble detect operation.... | 03/02/1982 |
| 4161349 | Beam separating prism system A beam separating prism system for an imaging system having two pairs of prisms, each prism having a 30, 60, and 90 degree triangular cross section and being provided with a partially reflecting region situated between the common boundary of the pair. A n... | 07/17/1979 |
| 4155213 | Strapping apparatus A strapping apparatus for applying a thermoplastic strap about an object by placing an end of the strap away from a supply thereof against the object and wrapping the portion of the strap adjacent that end about the object by rotating the object. Tensioni... | 05/22/1979 |
| 4150997 | Water base fluorescent ink for ink jet printing An ink composition for utilization in ink jet printing comprising an aqueous solution of a fluorescent pigment, a dye solubilizer, and butyl carbitol. The composition is nonflammable and has a relatively stable viscosity.... | 04/24/1979 |
| 4145686 | Data compressor A data compressor with a plurality of serially connected shift registers compressing digital signals received from a data lift for transfer to a storage device which operates at a slower rate than the data lift generates digital signals. The data compress... | 03/20/1979 |
| 4135148 | Character presence detector A character presence detector providing a decision on character presence at the data rate, that is the rate at which the character presence detector receives binary data bits. The binary data bits correspond to the output of a self-scanning photocell arra... | 01/16/1979 |
| 4125255 | Alignment mechanism for processing documents Alignment mechanism for processing documents having a plurality of rotating rollers extending upward from the floor of a horizontal tray which is provided with a longitudinal edge. The axes of the rollers are positioned at approximately 75° angle with re... | 11/14/1978 |
| 4124797 | Apparatus and method for reading randomly oriented characters An apparatus and method for reading randomly oriented characters having a laser producing a narrow beam of coherent light which is focused by a telescope onto indicia located on a written medium. The focus beam of light is directed by a scanner located in... | 11/07/1978 |
| 4106030 | Ink jet printer ink heater An ink temperature control apparatus having an enclosed heat conducting structure with ink circulating therein is provided in a ink jet printer. The temperature control apparatus includes a heating element attached to the structure and thermally engaged w... | 08/08/1978 |
