Patents Assigned to Casio Computer
  • Electronic musical instrument with keyboard
    Patent number: 4361067
    Abstract: Predetermined keys in a keyboard are used as reading keys for specifying the reading of note codes memorized in a memory section under the control of a function changing switch. Sounds corresponding to the note codes memorized in the memory section are delivered from a loudspeaker with a plurality of different volume levels set in the order of arrangement of the keys set as the reading specification keys.
    Type: Grant
    Filed: December 4, 1980
    Date of Patent: November 30, 1982
    Assignee: Casio Computer Co., Ltd.
    Inventor: Hiroshi Ishii
  • Electronic self-study device
    Patent number: 4358273
    Abstract: An electronic self-study device in which problems are randomly generated comprises input keys by means of which a user inputs an answer to a displayed problem, and a review key which is depressed by a user to again display a problem incorrectly answered by the user. The device includes a judging means which judges whether or not the answer inputted by the user is correct, and a problem storing means is responsive to the judging means for storing a problem to which a wrong answer has been inputted. Further provided is a problem read-out control device which is responsive to operation of the reviewing key for causing the problem to which an incorrect answer was given to again be displayed so that the user may again answer the problem to which an incorrect answer has been given.
    Type: Grant
    Filed: December 3, 1980
    Date of Patent: November 9, 1982
    Assignee: Casio Computer Co., Ltd.
    Inventor: Haruo Yamamoto
  • Key input indicating tone generating apparatus for small-sized electronic devices
    Patent number: 4354246
    Abstract: In a key input indicating tone generating system for small-sized electronic devices, key switches are classified into a plurality of groups according to their function. When key switches belonging to a group of key switches are operated, music tones are generated. When the key switches of at least one of the remaining groups of key switches are operated, tones different from the above mentioned tones are produced.
    Type: Grant
    Filed: December 12, 1979
    Date of Patent: October 12, 1982
    Assignee: Casio Computer Co., Ltd.
    Inventor: Hidetaka Fujisawa
  • Musical instrument type-selecting system for an electronic musical instrument
    Patent number: 4348932
    Abstract: An electronic musical instrument of simple arrangement wherein a plurality of musical tones of different musical instrument types are preset; musical tones of a desired musical instrument type is first selected; musical tones belonging to the selected one of the plural musical instrument types are played by performance keys; the performance keys are concurrently used for selection of musical tones of the desired musical instrument type, and which comprises a changeover switch for determining the application of the performance keys for the original purpose or for selection of a desired musical instrument type, thereby eliminating the necessity of providing separate musical instrument type-selecting key or keys in addition to the performance keys.
    Type: Grant
    Filed: November 25, 1980
    Date of Patent: September 14, 1982
    Assignee: Casio Computer Co., Ltd.
    Inventor: Toshio Kashio
  • Automatic rhythm accompaniment system
    Patent number: 4344345
    Abstract: An automatic rhythm accompaniment system comprises memory units storing a plurality of rhythm patterns and a designating switch for selecting a desired rhythm pattern. A memory unit is further contained in the system for previously storing chord progress data and further storing control data to fill in an ad-lib rhythm. Therefore, the rhythm accompaniment system may perform the ad-lib rhythm in place of the rhythm pattern by the switch designation for each measure. Additionally, the accompaniment based on the chord progress data may also be performed automatically.
    Type: Grant
    Filed: December 12, 1980
    Date of Patent: August 17, 1982
    Assignee: Casio Computer Co., Ltd.
    Inventor: Shigenori Sano
  • Automatic performing apparatus
    Patent number: 4341140
    Abstract: In an automatic performing apparatus, an amount of change in a motion of a moving element provided in a baton is detected, and the detected change amount is converted into an electrical signal. A tempo clock signal generator provided in the apparatus is driven by the electrical signal to produce a tempo clock signal for reading out musical data preset in a memory. A volume level of a musical tone is set by a control section on the basis of the data of a peak level of the change amount in the motion of the baton. The tone data stored in the memory is read out on the basis of the tempo clock and is automatically sounded as a musical sound, at the set volume level.
    Type: Grant
    Filed: January 22, 1981
    Date of Patent: July 27, 1982
    Assignee: Casio Computer Co., Ltd.
    Inventor: Hideaki Ishida
  • Electronic calculator with musical note generation
    Patent number: 4336598
    Abstract: When a key of a key-in section is operated and when an operation unit produces the result of operation, a display is performed on the basis of the keyed-in data and the operation result data stored in the memory unit, while at the same time the notes corresponding to the data are sounded under control of a sound control circuit.
    Type: Grant
    Filed: November 27, 1979
    Date of Patent: June 22, 1982
    Assignee: Casio Computer Co., Ltd.
    Inventor: Mikio Yanagawa
  • Electronic musical instrument with means for selecting tone clock numbers
    Patent number: 4332181
    Abstract: A circuit for obtaining a musical-scale frequency in an electronic musical instrument comprises a multi-stage binary counter for counting reference clock signals to obtain a respective musical-scale frequency based on the tempered scale, circuit means for taking a plurality of specific different count values from the binary counter, and selection circuit means for selecting the output of the circuit means according to each musical-scale.
    Type: Grant
    Filed: December 13, 1979
    Date of Patent: June 1, 1982
    Assignee: Casio Computer, Co., Ltd.
    Inventor: Toshio Kashio
  • Voltage selector circuit
    Patent number: 4324991
    Abstract: In a voltage selector circuit, a plurality of supply voltages are respectively supplied to a plurality of switching elements formed of MOS transistors. The plurality of switching elements are turned on and off according to the voltage levels of input signals supplied thereto, and a voltage waveform signal corresponding to one selected among the supply voltages is taken out from a common output terminal. The substrate electrode of a specified one of the switching elements is supplied with a corresponding supply voltage as the substrate voltage in response to a voltage change of the voltage waveform signal taken out selectively, thereby reducing power loss in the circuit.
    Type: Grant
    Filed: December 12, 1979
    Date of Patent: April 13, 1982
    Assignee: Casio Computer Co., Ltd.
    Inventor: Nobuo Tamaki
  • Electronic timepiece having an alarm unit
    Patent number: 4322830
    Abstract: An alarm device for electronic watches has a memory for storing data representing a specified date. When the user operates a switch on that day, the device sounds an alarm to tell the user the specified date has arrived.
    Type: Grant
    Filed: November 20, 1979
    Date of Patent: March 30, 1982
    Assignee: Casio Computer Co., Ltd.
    Inventor: Eiji Nakazawa
  • Unused program number indicating system for a small program type electronic calculator
    Patent number: 4317183
    Abstract: An unused program number-indicating system for a small program type electronic calculator, wherein input program data are all stored in a program data memory. A detection circuit detects a program number corresponding to the program data read out of the program data memory, and used and/or unused program numbers are displayed in the prescribed form by control circuits.
    Type: Grant
    Filed: December 11, 1979
    Date of Patent: February 23, 1982
    Assignee: Casio Computer Co., Ltd.
    Inventors: Tomohiro Shimizu, Yoshinobu Muranaga
  • Electric apparatus for displaying a plurality of key symbols on a single passive display
    Patent number: 4313108
    Abstract: An electric apparatus is adapted to display a plurality of key symbols on a single passive display. A keyboard includes a plurality of input keys for selectively inputting at least numeral data and function data and input keys operated to selectively display key symbols representing numerals, functions, etc. A single passive liquid crystal display is arranged below the keyboard. A plurality of electrodes are arranged on the predetermined areas of the single passive display and the key symbols corresponding to the functions are selectively displayed, by a key operation, on the electrodes.
    Type: Grant
    Filed: December 4, 1979
    Date of Patent: January 26, 1982
    Assignee: Casio Computer Co., Ltd.
    Inventor: Junichi Yoshida
  • Electronic cash register with single printer for printing receipts and a journal
    Patent number: 4312037
    Abstract: An electronic cash register provides printing data printed on a recording sheet in the form of a receipt or a journal. The electronic cash register is provided with a single printer to print printing data on a recording sheet to issue a receipt, and memory means for temporarily storing the printing data for a journal inputted with the receipt issuings. The printing data is read out from the memory means by operating a specified key and the read-out data is printed on a recording sheet to thereby issue a journal with the same single printer.
    Type: Grant
    Filed: December 11, 1979
    Date of Patent: January 19, 1982
    Assignee: Casio Computer Co., Ltd.
    Inventor: Tooru Yamakita
  • Data-recording device
    Patent number: 4310861
    Abstract: A data-recording device wherein a plurality of tracks are concentrically provided on the recording surface of a rotatable magnetic recording medium. A plurality of sector-starting positions are arranged on the respective tracks at a given circumferential interval to detect the extent to which the magnetic recording medium has been rotated, and one sector-starting position among the sector-starting positions of the respective tracks is used as a point at which the writing or reading of data is to be commenced.
    Type: Grant
    Filed: September 4, 1979
    Date of Patent: January 12, 1982
    Assignee: Casio Computer Co., Ltd.
    Inventor: Toshio Kashio
  • Power supply device with voltage dropping means
    Patent number: 4308609
    Abstract: A power supply system for an electronic device having a battery power source, a logic circuit, a voltage dropping circuit which drops the voltage of the battery power source to produce a dropped voltage, and a load circuit to drop the output voltage of the battery power source comprises a voltage switch circuit for supplying selectively the output voltage from the power source and the dropped voltage from the voltage dropping circuit to the logic circuit as a drive voltage. In the system, the logic circuit is usually operated by the output voltage from the dropping voltage circuit. When the load circuit operates, it is operated by the output voltage from the battery power source.
    Type: Grant
    Filed: December 4, 1979
    Date of Patent: December 29, 1981
    Assignee: Casio Computer Co., Ltd.
    Inventor: Nobuo Tamaki
  • System for generating sample tones on an electronic musical instrument
    Patent number: 4306482
    Abstract: In an electronic musical instrument which is arranged to produce musical tones belonging to the selected one of many different types of musical instruments and having a number of player-operable selection keys respectively corresponding to the number of types of musical instrument sounds desired, the improvement wherein means is provided for generating a sample tone belonging to that type of musical instrument specified by one of the above-mentioned selection keys at a prescribed pitch and period simply by depressing only once a particular selection key, without taking the trouble of successively depressing individual performance keys, thereby facilitating the selection of a desired type of musical instrument by the player.
    Type: Grant
    Filed: January 23, 1980
    Date of Patent: December 22, 1981
    Assignee: Casio Computer Co., Ltd.
    Inventor: Toshio Kashio
  • Key input control apparatus
    Patent number: 4302816
    Abstract: A key input control apparatus is provided with a key input unit having a plurality of keys including a special key with an entry function and a calculation designating function. The output signals provided from keys depressed in the key input unit are stored in a memory unit in the order of the key depressions. When the special key is depressed, a logic circuit executes a given calculation designating function assigned to the special key in accordance with the output signal, which has been stored corresponding to the kinds of the keys in the memory unit, taken out from the memory unit. The operation specified by the logic circuit is executed by an arithmetic logic circuit. Data keyed in from the key input unit or result of the operation executed on the basis of the data keyed in is displayed by a display unit.
    Type: Grant
    Filed: June 20, 1979
    Date of Patent: November 24, 1981
    Assignee: Casio Computer Co., Ltd.
    Inventor: Haruo Yamamoto
  • Wrist watch
    Patent number: D263452
    Type: Grant
    Filed: March 10, 1980
    Date of Patent: March 23, 1982
    Assignee: Casio Computer Co., Ltd.
    Inventor: Masao Wada
  • Digital wrist watch or the like
    Patent number: D265295
    Type: Grant
    Filed: July 15, 1980
    Date of Patent: July 6, 1982
    Assignee: Casio Computer Co., Ltd.
    Inventor: Masao Wada
  • Wrist watch or the like
    Patent number: D266230
    Type: Grant
    Filed: March 10, 1980
    Date of Patent: September 21, 1982
    Assignee: Casio Computer Co. Ltd.
    Inventor: Kaoru Tsukahara