Patents Examined by Susan Wieland
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Patent number: 5479351Abstract: A GPS receiver comprises a data output port for communicating time code information formatted according to standards published by the Society of Motion Picture and Television Engineer (SMPTE). Such time code information is input to independent sound, film and video recorders at a performance event to create tracks on each recording for re-synchronizing the pictures and sounds in post-performance editing.Type: GrantFiled: December 23, 1994Date of Patent: December 26, 1995Assignee: Trimble Navigation LimitedInventors: Arthur Woo, David S. Sprague
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Patent number: 5479345Abstract: A method and apparatus for selecting gear shift points wherein vehicle speed and grade are monitored by :sensors which provide data which is used to calculate vehicle acceleration adjusted to compensate for the effect of vehicle grade. A gross vehicle weight value is determined from the adjusted acceleration value. Based on the determined gross vehicle weight and the existing grade, the horse power required to sustain the current GVW and grade with zero acceleration is calculated. Also the current GVW and grade are used to determine the rate of vehicle speed loss during the torque interrupt period in order to predict the engine speed in the new gear and calculate the horse power available from the engine at shift completion.Type: GrantFiled: November 2, 1993Date of Patent: December 26, 1995Assignee: Eaton CorporationInventor: Marcel Amsallen
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Process and circuit arrangement for the reduction of disadvantageous effects of engine stall torques
Patent number: 5477456Abstract: For the reduction of disadvantageous effects of engine stall torques on the braking behavior of a vehicle which is equipped with a brake unit having an anti-lock control system, the brake slip of the driven wheels is monitored independently of any actuation of the brake. In the event of a rotational behavior of the driven wheels which is typical of the effect of engine stall torques, in particular in the event of a brake slip at the driven wheels exceeding a limit value, brake pressure existing in the wheel brakes of the driven wheels is maintained constant or reduced, or, if the braking action has not yet commenced, the supply of brake pressure into the wheel brakes of the driven wheels is prevented.Type: GrantFiled: June 27, 1994Date of Patent: December 19, 1995Assignee: ITT Automotive Europe GmbHInventors: Helmut Fennel, Jean-Claude Schwartz, Otto Determann, Robert Schmidt, Norbert Ehmer -
Patent number: 5477460Abstract: Switching characteristics of system components are represented and summed so that their effects on the overall system can be observed during the design process. Full simultaneous switching analysis is provided at the earliest levels of design containing minimal level of design data by a method of computing net based simultaneous switching noise levels which supports packages ranging from the smallest chip level to the largest board level. The simultaneous switching activity is computed based on interaction between each driver and each other driver between each component and each other component, with consideration to the spatial inter-relationship net, within a higher level component, to determine each component's drivers effect on itself as well as the coupling effect between drivers on different components. The analysis involves computing simultaneous switching noise by associating a characteristic triangle with each driver application configuration. The characteristic triangle.Type: GrantFiled: December 21, 1994Date of Patent: December 19, 1995Assignee: International Business Machines CorporationInventors: Charles K. Vakirtzis, George A. Katopis, Gerald W. Mahoney, Craig R. Selinger, Bradley D. McCredie, Wiren D. Becker
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Patent number: 5473543Abstract: A shift timing detecting system for detecting the start of a shift of an automatic transmission A in terms of a change in the R.P.M. of a predetermined rotary member after a shift command has been outputted. The shift timing detecting system comprises: a detector for detecting a change in the output R.P.M. of the automatic transmission; an arithmetic processor for arithmetically processing the change in the output R.P.M. with different coefficients to determine two processed values: a comparator for comparing the two processed values: and a shift start decider 5 for deciding the start of the shift on the basis of the result of the comparison. Since the shifting situation can be grasped from the change in the output torque accompanying the start of the shift and the change in the output R.P.M. caused by the former change, the start of the shift can be accurately detected without any time delay.Type: GrantFiled: August 12, 1994Date of Patent: December 5, 1995Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kazutoshi Nozaki, Kunihiro Iwatsuki, Hidehiro Oba, Yoshinobu Nozaki, Tetsuo Hamajima
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Patent number: 5471393Abstract: The Driver's Associate assists a driver of a vehicle to more efficiently reach a desired destination, to record the route driven, and to provide driving summary reports. The present invention uses a unique method for tracking the dead-reckoned coordinate of the vehicle by using a sum-of-squares or .chi..sup.2 minimization algorithm for plotting the navigation route, tracking the vehicle through the road map database, and for normalizing the vehicle's location between the dead-reckoned coordinate and the roadway projected coordinate. The present invention also uses a Singular Value Decomposition method for optimizing the normalization process so that we can track a vehicle's location more accurately than other navigation devices.Type: GrantFiled: January 26, 1994Date of Patent: November 28, 1995Inventor: Joe Bolger
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Patent number: 5471388Abstract: A method and apparatus for preventing vehicle handling instabilities, in which a vehicle yaw angular velocity required value (.mu..sub.soll) is formed from measured quantities (vehicle velocity, steering wheel angle). The vehicle yaw angular velocity actual value (.mu..sub.ist) is formed from at least one sensor signal, the difference between the yaw angular velocity required value (.mu..sub.soll) and the yaw angular velocity actual value (.mu..sub.ist) is determined by subtracting the yaw angular velocity actual value (.mu..sub.ist) from the yaw angular velocity required value (.mu..sub.soll), and the handling situation or the vehicle yaw behavior to be detected is determined from this difference. The time derivative of the difference is formed to determine whether the vehicle exhibits understeer or oversteer. The slip threshold value (.sigma..sub.Type: GrantFiled: July 13, 1992Date of Patent: November 28, 1995Assignee: Mercedes-Benz AGInventors: Adam Zomotor, Walter Klinkner, Erich Schindler, Frank-Werner Mohn, Thomas Wohland
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Patent number: 5471390Abstract: A differential limiting torque control system for an automotive vehicle with an anti-skid brake control system (ABS) and a limited slip differential (LSD), comprises sensors for detecting a deceleration, a lateral acceleration, and a drive-wheel speed difference between the right and left drive wheels, and an active LSD controller responsive to both the detected deceleration and the detected lateral-acceleration for deriving a first target torque and responsive to the detected drive-wheel speed difference for deriving a second target torque. The controller adjusts a differential limiting torque applied to the LSD to a higher one of the first and second target torques, only during operation of the ABS.Type: GrantFiled: July 5, 1994Date of Patent: November 28, 1995Assignee: Nissan Motor Co., Ltd.Inventor: Hiroki Sasaki
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Patent number: 5469367Abstract: A machine methodology for designing asynchronous circuits utilizes a modular approach for the synthesis of asynchronous circuits from signal transition graphs, partitions the signal transition graph into a number of simpler and more manageable modules. Each modular graph is then individually solved. The results of the small graphs are then integrated together to provide a solution to the asynchronous circuit design problem as defined by a given asynchronous behavioral specification. A satisfiability solver for Boolean output function utilizing a binary decision diagram is incorporated in one embodiment which is comprised of a structural SAT formula preprocessor and a complete, incremental SAT processor which is specifically designed to find an optimal solution. The preprocessor compresses a large size SAT formula representing a circuit into a number of smaller SAT formulas. Each small size SAT formula is then solved by the BDD SAT processor.Type: GrantFiled: June 6, 1994Date of Patent: November 21, 1995Assignee: University Technologies International Inc.Inventors: Ruchir Puri, Jun Gu
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Patent number: 5467272Abstract: An integrated wiring system having a plurality of terminal control units and a central controlling unit (including computational processing means) for transferring information to and from the terminal control units. An input/output control unit is provided for executing communication control based on plural communication protocols with a plurality of different information processing speeds for communicating with the terminal control units. In a preferred embodiment, the input/output control units have a plurality of transmission controlling programs corresponding to the plurality of terminal control units, and the frequencies of execution of the respective terminal controlling programs are different from one another.Type: GrantFiled: January 21, 1994Date of Patent: November 14, 1995Assignee: Hitachi, Ltd.Inventors: Tatsuya Yoshida, Shigeru Oho
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Patent number: 5467276Abstract: A navigation apparatus which includes an input section, a central processing section, a display section and a memory section is mounted on a moving object. When an initial or current position and destination of the moving object are provided to the central processing section, the apparatus produces two or more possible routes along which the moving object can move to reach the destination after starting from the current position by using map data stored in the memory section. The initial or current position, destination and possible routes are repeatedly calculated and indicated on a screen of the display section. The two or more possible routes are repeatedly produced by a processor and calculation/retrieval circuitry. A connection route existing between the two or more possible routes may be retrieved and repeatedly indicated. Furthermore, a possible area containing the possible routes may be retrieved and repeatedly indicated.Type: GrantFiled: November 18, 1993Date of Patent: November 14, 1995Inventor: Toshio Tsuyuki
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Patent number: 5465218Abstract: An LSI element placement method of placing elements in accordance with an order in which branches are arranged, each branch being constituted by an element array included in a circuit diagram having first and second terminals, the method including a partial circuit extraction step of sequentially extracting data of a predetermined number of branches included in the circuit diagram from the first terminal side of the circuit diagram so as to overlap the data by a predetermined number, and an element placement step of performing an element placement operation based on a genetic algorithm in the extracted partial circuit data, thereby generating an element placement result including placement coordinate data of all elements included in the partial circuit data.Type: GrantFiled: February 10, 1994Date of Patent: November 7, 1995Assignee: Kabushiki Kaisha ToshibaInventor: Keiichi Handa
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Patent number: 5463554Abstract: A navigation system installed in vehicle includes: a measurement unit for measuring current position of the vehicle and outputting current position data; a map data storage unit for storing map data; a display unit for displaying information; display control unit for representing, on the display unit, a map on the basis of the map data and position of the vehicle on the basis of the current position data; a transit point storage unit for storing transit point data corresponding to transit points on a way from start point to destination point; a guide unit for representing guide information on the basis of the transit point data; a distance calculation unit for calculating transit point distances from the current position to each of the transit points on the basis of the current position data and the transit point data; a comparison unit for comparing the transit point distances with a reference distance and for detecting a special transit point whose transit point distance is smaller than the reference distanType: GrantFiled: June 16, 1994Date of Patent: October 31, 1995Assignee: Pioneer Electronic CorporationInventors: Morio Araki, Katsuyoshi Hayashi, Yukiko Habu
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Patent number: 5463553Abstract: A navigation apparatus is provided with: a measuring device for measuring a present position of a movable body to output a present position information; a storing device for storing map information; a displaying device having a display picture plane, for displaying various information on the display picture plane; a display controlling device for controlling the displaying device to display a target position information, which is set as information indicating a target position, and the present position information on the map information; a judging device for judging whether a distance between the present position and the target position is within a predetermined value; and a calculating device for calculating a middle position between the present position and the target position when the distance is within the predetermined value, to output middle position information, the display controlling device controlling the displaying device to display the target position information and the present position informatiType: GrantFiled: June 16, 1994Date of Patent: October 31, 1995Assignee: Pioneer Electronic CorporationInventors: Morio Araki, Katsuyoshi Hayashi, Yukiko Habu
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Patent number: 5461578Abstract: A power bus having power slits embodied therein. The present invention includes three embodiments. The first embodiment is directed to generic power buses. Each power bus has a first axis, along which power flows, and a second axis. Each of the power slits have an identical maximum width and minimum length. Power slits located along the first axis are separated from one another by a first minimum value, and power slits located along the second axis are separated from one another by a second minimum value. The first and second minimum values are selected as a function of electron flow and photolithography. The second embodiment is a continuation of the first embodiment and is directed to an apparatus with a plurality of power buses in which two buses overlap at 90.degree. angles. The overlap area of the apparatus is void of power slits, but has holes at intersection points of a set of pointer lines. The pointer lines are imaginary lines eminating from the power slits.Type: GrantFiled: August 11, 1994Date of Patent: October 24, 1995Assignee: Seiko Epson CorporationInventors: Chong M. Lin, Tatao Chuang, Tran Long, Hy Hoang
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Patent number: 5457632Abstract: A system for controlling a steering angle of a vehicle, such as a steering angle of a rear steering wheel, the system having a yaw rate sensor for detecting a yaw rate of the vehicle, an actuator electrically controlled to change the steering angle of the vehicle, and a controller for controlling the actuator to control the steering angle on the basis of an input which includes at least a component derived from the detected yaw rate. The controller includes a detector for detecting an abnormality of a value of the yaw rate detected by the yaw rate sensor, and a limiter for limiting an amount of change in the steering angle to within a predetermined tolerable range when the abnormality is detected.Type: GrantFiled: January 19, 1994Date of Patent: October 10, 1995Assignee: Toyota Jidosha Kabushiki KaishaInventors: Shinichi Tagawa, Hiroshi Nakashima, Yasuo Uehara, Hideo Inoue
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Patent number: 5452225Abstract: A computer implemented method that first simulates the electronic circuit of each cell type within a circuit cell library using combinations of input transition time and load capacitances. The method reduces the results of the simulation to one of several models for the cell type. The method then reads an actual circuit description of the electronic circuit, and applies the models to the actual cells used in the circuit to determine signal delay through the circuit.Type: GrantFiled: January 24, 1994Date of Patent: September 19, 1995Assignee: Hewlett-Packard CompanyInventor: Mark E. Hammer
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Patent number: 5452212Abstract: A navigation system for use in a vehicle including a route-calculating section and a route guide control section. The route-calculating section searches for an optimum route according to conditions set for the search. The guide control section provides displays necessary to guide the driver of the vehicle, and guides the driver by speech. This guide control has a landmark name-setting section which sets the names of landmarks according to information about the landmarks, the information retrieved from a guidance information storage section according to information about the present position from a present position-determining section. A display section displays a whole route map indicating the selected route according to instructions from the route guidance control section. At the same time, the names of the landmarks are presented on the display section.Type: GrantFiled: August 17, 1993Date of Patent: September 19, 1995Assignee: Aisin AW Co., Ltd.Inventors: Shoji Yokoyama, Kyoumi Morimoto, Mitsuhiro Nimura, Akimasa Nanba, Hiroyoshi Masuda
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Patent number: 5450325Abstract: A cyclocomputer for use on a bicycle displays route instructions stored in the cyclocomputer, displays two dimensional graphs on the face of the cyclocomputer, and is capable of exporting and importing information to and from other computers or cyclocomputers. The route instructions may be displayed with symbols such as left arrow, right arrow and up arrow or with alphanumeric characters. The displayed instruction is advanced to the next instruction automatically when a predetermined distance has been measured by the odometer or by the press of a button. Button presses may advance or review the displayed instructions. The distance to the next instruction point is constantly displayed. Importing information may be accomplished with an infrared link which communicates to many cyclocomputers at one time. Recorded data, such as speed, pedal cadence, or heart rate, may be displayed over distance or time, with the graphs being marked for each instruction point.Type: GrantFiled: March 9, 1992Date of Patent: September 12, 1995Inventor: Angel L. Rodriguez
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Patent number: 5450344Abstract: A GPS receiver comprises a data input/output port for communication of datum-less position fixes in an earth-centered, earth-fixed (ECEF) coordinate style to avoid the errors associated with not communicating the datum choice with latitude longitude data communication formats.Type: GrantFiled: April 22, 1994Date of Patent: September 12, 1995Assignee: Trimble Navigation LimitedInventors: Arthur Woo, David S. Sprague