Patents by Inventor Akito Yamamoto

Akito Yamamoto has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10315435
    Abstract: A printing apparatus including: a first nozzle group including a first and third nozzles which ejects a first liquid; and a second nozzle group including a second nozzle which ejects a second liquid, in which, when an ejection state of the liquid ejected from the one nozzle which belongs to the first nozzle group is abnormal, complementation is performed using complementation modes of a first complementation mode that increases the amount of a liquid to be ejected from the first nozzle instead of allowing the one nozzle to eject the liquid, a second complementation mode that increases the amount of the liquid to be ejected from the second nozzle instead of allowing the one nozzle to eject the liquid, and a third complementation mode that increases the amount of the liquid to be ejected from the third nozzle instead of allowing the liquid to be ejected from the one nozzle.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: June 11, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Akito Sato, Yuko Yamamoto, Yuichi Yoneyama
  • Publication number: 20040222284
    Abstract: A protecting device for an automatic money handling machine, includes an upper surface of the automatic money handling machine being formed flat, a base plate, a housing space for housing the automatic money handling machine being formed under the base plate, the base plate having an opening through which the automatic money handling machine is passed, and the opening continuing to the housing space. The automatic money handling machine is usually held over the opening by a supporting device so as to protrude above the base plate. The supporting function of the supporting device is cancelable. The automatic money handling machine drops downwardly into the housing space so as not to protrude above the base plate when the supporting function of the supporting device is canceled. It is impossible to take away money contained in the automatic money handling machine even by means of heavy construction or destruction machines.
    Type: Application
    Filed: July 28, 2003
    Publication date: November 11, 2004
    Inventors: Akito Yamamoto, Hiroyuki Hagiwara
  • Patent number: 6546336
    Abstract: A portable position detector is equipped with a pedometer, a geomagnetic sensor, and an acceleration sensor. With the pedometer, the moved distance of a walker is detected by a calculation of “the number of steps×the length of a step”. With the walking time per step detected with the acceleration sensor, the length of a step is corrected so that it corresponds to the walking state. The moved direction of the walker is detected with the geomagnetic sensor. With this, the moved position of the walker is accurately detected by self-contained navigation. Particularly, even in the case where the position detector is located in a forest or between buildings where a signal cannot be received from a global positioning system (GPS) due to high buildings, banks, and forests, the position detector with a portable size and weight applicable to a walker can know with a practically sufficient degree of accuracy the position of a person carrying this portable detector by self-contained navigation.
    Type: Grant
    Filed: September 23, 1999
    Date of Patent: April 8, 2003
    Assignee: Jatco Corporation
    Inventors: Yoshio Matsuoka, Akito Yamamoto
  • Patent number: 6361435
    Abstract: A general purpose combined harvester and thresher comprising a first rotor (51) and a second rotor (52) provided in a thresh unit (5) and arranged longitudinally in parallel to each other with axes thereof right and left, and a first receiving net (55) and a second receiving net (56) arranged below the respective rotors to define a first treating chamber (D1) and second treating chamber (D2). A grain tank (79) is arranged above the threst unit (5), a base end of a discharge auger (83) is arranged outside the grain tank (79), an engine (84) is arranged behind the grain tank (79), and a transmission casing (85) is arranged below the engines A tooth bar (T1) is provided on an outer peripheral surface of the first rotor (51) facing a grain rod inlet (36), and a screw vane (53) has a pitch (P) equal to a width of a rear end of a feeder housing (35). A terminal end of a return conveyor (81) for returning of a second product communicates with the first treating chamber (D1).
    Type: Grant
    Filed: June 19, 2000
    Date of Patent: March 26, 2002
    Assignee: Yanmar Agricultural Equipment Co., Ltd.
    Inventors: Akito Yamamoto, Kenji Hamada, Masami Nakamura, Toshinori Kirihata, Jun Terashima, Junichi Masano, Yuichi Shinpuku
  • Patent number: 5408645
    Abstract: A circuit and method for detecting a failure in a microcomputer are disclosed in which a watch-dog timer monitors an internal state of the microcomputer at an internal node representing the internal state and an error detection signal used to inform the failure of the microcomputer is output when a particular internal state to be generated on the internal node within a predetermined period of time. Particularly, in a preferred embodiment where the internal node is an output portion of a microprogram memory, microinstructions are monitored which serves as control signals used within or externally to the microcomputer.
    Type: Grant
    Filed: June 25, 1992
    Date of Patent: April 18, 1995
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Hiroshi Ikeda, Akito Yamamoto
  • Patent number: 5305216
    Abstract: A vehicle control apparatus comprises various sensors sensitive to vehicle operating parameters for producing signals having values sensed for the respective vehicle operating parameters. The vehicle control apparatus also comprises a transition detector. The transition detector includes a memory for storing threshold values specified for the respective vehicle operating parameters, and a comparator for comparing the sensed values with the respective threshold values in a predetermined sequence to sense a transition in one of the vehicle operating parameters when the value sensed for the one vehicle operating parameter is in a range defined by the threshold value specified for the one vehicle operating parameter. The transition detector is coupled to a control unit for controlling the automotive vehicle for the sensed transition.
    Type: Grant
    Filed: October 31, 1991
    Date of Patent: April 19, 1994
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kazuma Okura, Akito Yamamoto
  • Patent number: 5214349
    Abstract: A color selection electrode device mounts: a color selection electrode composed of filaments for regulating the position which an electron beam of the cathode ray tube reaches on a pair of U-shaped frame bodies between which the color selection electrode is stretched. Support pieces are provided for connecting both end portions of the pair of frame bodies and holding the frame bodies at a predetermined space. The color selection electrode is a metal electrode which is composed of, for example, a multiplicity of filaments. The support pieces are composed of an elastic material and are bent due to the load which is applied to the frame bodies, thereby shortening the distance between the frame bodies. In this state, the color selection electrode is stretched between the frame bodies and both ends thereof are welded to the frame bodies. Thereafter, when the load is removed, a predetermined tension is uniformly applied to the color selection electrode by the elastic restoring force.
    Type: Grant
    Filed: October 24, 1991
    Date of Patent: May 25, 1993
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Shigeki Sakata, Akito Yamamoto, Mizuki Murata
  • Patent number: 5019964
    Abstract: A device for data interfacing between a transmitter having a processing unit and a receiver having another processing unit in which data is automatically fetched from a bus connected to the processing unit in the transmitter and transmitted to a data transmission line and the data from the data transmission line is held in the receiver. The processing unit in the transmitter does not participate in the data transmission and the other processing unit in the receiver can fetch the reception data at any time. Thus loads imposed on the processing units in the transmitter and in the receiver can greatly be reduced.
    Type: Grant
    Filed: August 25, 1987
    Date of Patent: May 28, 1991
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Akito Yamamoto, Takashi Ueno, Akio Sumizawa
  • Patent number: 5019799
    Abstract: A self-monitoring system for an automotive electronc control system such as an engine control system, an electronic anti-skid control system or electronic automatic transmission control system is adapted to check each segment of the electronic control system in order to detect faulty segments. To detect faulty segments, the self-monitor system checks inputs and outputs of the electronic control system. The checked data is stored in a memory which is not erased when the power supply is turned off. The self-monitoring system is associated with another automotive microcomputer which includes a display unit. The other automotive microcomputer is adapted to display the results of the checking operation of the self-monitoring system in response to a display request manually inputted from a manual unit to display identification of the fault segment and/or error condition thereof.
    Type: Grant
    Filed: April 15, 1987
    Date of Patent: May 28, 1991
    Assignee: Nissan Motor Company, Limited
    Inventors: Katsunori Oshiage, Akio Hosaka, Akito Yamamoto
  • Patent number: 4956807
    Abstract: A watchdog timer works in concert with special computer program features to monitor program execution and reset the computer in case of malfunction. The computer CPU is programmed to periodically output one of an alternating pair of values to a register which holds the value for a comparator. The output value is compared to a predetermined value equal to one of the alternating output value. When the compared values are equal, the comparator outputs a reset signal to a counter. The counter counts clock pulses and if it counts to its full capacity before being reset by the comparator output, it outputs a reset signal which causes the computer to restart program execution. A second comparator may be provided to compare the alternating values to a reference value equal to the other values. Thus the comparators check for proper output of both signals and reset the counter only in response to receipt of both values.
    Type: Grant
    Filed: December 16, 1983
    Date of Patent: September 11, 1990
    Assignee: Nissan Motor Company, Limited
    Inventors: Akio Hosaka, Akito Yamamoto
  • Patent number: 4777920
    Abstract: A system and method for controlling ignition timing of an internal combustion engine controls the ignition timing in accordance with the measured intensity of knocking when such occurs. The system corrects the ignition timing by a retardation amount related to the intensity of knocking. The system monitors engine vibration over a period in which knocking cannot occur and over the period after TDC in which knocking may occur and compares the vibration intensity levels to produce a statistical measure of knocking intensity. If the measured intensity reflects a high probability of severe knocking, ignition is retarded immediation to an extent related to the measured intensity. If knocking is absent to a high probability, ignition timing is advanced to a fixed extent. When only light knocking is detected, the measured intensity is monitored over numerous ignition cycles until the cumulative intensity level reflects a high probability either of desirable trace knocking or moderately disruptive knocking.
    Type: Grant
    Filed: January 23, 1987
    Date of Patent: October 18, 1988
    Assignee: Nissan Motor Company, Limited
    Inventors: Katsunori Oshiage, Akito Yamamoto, Yuji Nakajima
  • Patent number: 4739469
    Abstract: A highly reliable, fail-safe circuit for a control system wherein a controlled device will always receive a control signal derived from a main control circuit when the main control circuit operates normally even if a back-up control circuit backing up at least one function of the main control circuit which is a minimum requirement for an operation of the controlled device fails or wherein a controlled device will receive a control signal derived from the back-up control circuit when the main control circuit fails. Replacement of the control signal from the main control circuit with a back-up control signal from the back-up circuit is carried out only when the back-up circuit outputs a particular signal at or near a predetermined frequency or alternatively when the back-up circuit outputs a plurality of parallel logical signals in a predetermined combination.
    Type: Grant
    Filed: April 18, 1985
    Date of Patent: April 19, 1988
    Assignee: Nissan Motor Company, Limited
    Inventors: Katsunori Oshiage, Akito Yamamoto, Toshimi Abo
  • Patent number: 4693221
    Abstract: In an internal combustion engine, a spark timing control device adjusts spark timing in accordance with detected value of vibration in combustion pressure. A sensor detects vibration in combustion pressure within the engine. The detected combustion pressure vibration is converted into a correlation value relating to combustion condition of the engine. The current correlation value is compared to a reference value corresponding to the correlation value which was obtained during idling operation of the engine. This comparison is to determine whether or not a malfunction of the spark timing control device occurs. The spark timing is controlled in accordance with the detected combustion pressure vibration and also with the determination as to whether or not a malfunction of the spark timing control device occurs.
    Type: Grant
    Filed: July 31, 1986
    Date of Patent: September 15, 1987
    Assignee: Nissan Motor Company, Limited
    Inventors: Yuji Nakajima, Akito Yamamoto
  • Patent number: 4640250
    Abstract: A method and apparatus for controlling knock level in an internal combustion engine having knock induced vibrations and valve noises. Engine knock is decided when the knock induced vibration level exceeds at least one of the valve noise level and a limiting level. A basic value for the timing of ignition of the engine is calculated based upon engine operating parameters. The basic value is modified according to the result of the engine knock decision in a manner to operate the engine close to its knock level.
    Type: Grant
    Filed: February 6, 1985
    Date of Patent: February 3, 1987
    Assignee: Nissan Motor Company, Limited
    Inventors: Akio Hosaka, Akito Yamamoto
  • Patent number: 4551803
    Abstract: An electronic engine control apparatus includes a digital computer which receives sensor signals indicative of various engine operating parameters and calculates corresponding settings of actuators used to control the energy conversion process of an internal combustion engine. The apparatus has a memory for storing and holding data independently of an ignition switch being turned off. The apparatus includes a data input for inputting data specifying a function to be performed, a memory location and a numeral. The computer is programmed to perform the function using the numeral and the memory location. The function to be performed may include modifying data in the memory location in accordance with the numeral.
    Type: Grant
    Filed: July 15, 1982
    Date of Patent: November 5, 1985
    Assignee: Nissan Motor Company, Limited
    Inventors: Akio Hosaka, Akito Yamamoto, Katsunori Oshiage
  • Patent number: 4532594
    Abstract: An electronic control system for an automotive vehicle including an engine control system for controlling the engine operation using a microcomputer and a vehicle driving information system for preparing and displaying various driving information using another microcomputer, wherein a back up program is assembled into each microcomputer for backing up at least the critical jobs of the partner microcomputer when the partner fails so as to ensure continuing, safe operation of the vehicle.
    Type: Grant
    Filed: July 9, 1982
    Date of Patent: July 30, 1985
    Assignee: Nissan Motor Company, Limited
    Inventors: Akio Hosaka, Akito Yamamoto, Katsunori Oshiage
  • Patent number: 4527248
    Abstract: In an engine speed sensing device, angle pulses produced when the crankshaft rotates through a predetermined angle are counted by a counter for a predetermined interval. The count of angle pulses is read into a central processing unit of a digital computer at the end of each set time interval in response to a control signal which both updates the angle pulse count and signals the processing unit to read the count.
    Type: Grant
    Filed: December 23, 1981
    Date of Patent: July 2, 1985
    Assignee: Nissan Motor Company, Limited
    Inventors: Sadao Takase, Katsunori Oshiage, Akito Yamamoto, Akio Hosaka
  • Patent number: 4502446
    Abstract: A fail-safe system for an engine control system is capable of performing a fail-safe operation when a crank angle sensor fails. When the crank angle sensor malfunctions, at least one of a crank reference signal and a crank position signal will be absent. The fail-safe system prevents the engine from stalling even when one of the crank reference signal and the crank position signal is absent. The fail-safe operation will be carried out when the absence of the crank reference signal and/or the crank position signal is detected. In the fail-safe operation, a fail-safe signal is produced for controlling engine operation as a replacement for an engine control signal from the engine control system under normal conditions. The signal value of the fail-safe signal may be variable in accordance with an engine operating condition derived from an engine control parameter other than the crank angle sensor signals.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: March 5, 1985
    Assignee: Nissan Motor Company, Limited
    Inventors: Hidetoshi Kanegae, Katsunori Oshiage, Akito Yamamoto, Akio Hosaka
  • Patent number: 4437342
    Abstract: A fault diagnostic system is arranged to detect faults in a fuel system of an engine with an electronic fuel injection system by monitoring the quantities of fuel consumed during a time interval. To do this, the consumption quantity of fuel is determined from a decrease of the residual quantity of fuel remaining in a fuel tank which is detected by a fuel gauge. On the other hand, the fuel injection quantity is determined independently by summing the length of the injector open time of each injection. Then, the fuel consumption quantity and the fuel injection quantity during the same time interval are compared. If the difference therebetween is larger than a predetermined permissible range, it is decided that there is some fault somewhere in the fuel system, and an indication signals is produced.
    Type: Grant
    Filed: June 15, 1982
    Date of Patent: March 20, 1984
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Akio Hosaka, Akito Yamamoto, Katsunori Oshiage
  • Patent number: 4428348
    Abstract: A digital control system for an internal combustion engine uses a two stage register. The register is used to store digital data representative of sensed engine operating conditions and to feed such data to a programmable digital computer for processing. Processing time is improved by reading only one register containing the most significant data bits of the stored data for engine parameters having a relatively narrow dynamic range and reading both registers, containing all data bits of the stored data for engine parameters having a relatively large dynamic range.
    Type: Grant
    Filed: December 7, 1981
    Date of Patent: January 31, 1984
    Assignee: Nissan Motor Company, Limited
    Inventors: Sadao Takase, Akito Yamamoto, Katsunori Oshiage, Akio Hosaka