Patents Assigned to Casio Computer
  • Keyswitch structure
    Patent number: 4570039
    Abstract: In a keyswitch structure, a number of recesses are formed in a lower case, and a projection with a flat top surface is formed inside each of the recesses. The recesses communicate with each other by means of grooves formed on the lower case, and fixed contacts are provided on the projections. A pattern is formed on the under surface of a flexible substrate put on the lower case so that movable contacts, included in the pattern, face the fixed contacts. An elastic sheet with a number of buttons is put on the flexible substrate, and the flexible substrate and the elastic sheet are fixedly held between an upper case and the lower case. When any of the buttons of the elastic sheet is pushed, the elastic sheet and the flexible substrate are elastically deformed to bring the movable contacts into contact with the fixed contacts.
    Type: Grant
    Filed: July 23, 1984
    Date of Patent: February 11, 1986
    Assignee: Casio Computer Co., Ltd.
    Inventors: Hiroshi Osawa, Isao Kurashima, Yoshio Kawai
  • Optical reading apparatus
    Patent number: 4567360
    Abstract: An optical reading apparatus of the invention has a light source and a light-receiving unit for receiving light reflected from a data recording medium on which data is recorded and for producing an electrical signal corresponding to an intensity of received light. The light source is driven by a driving circuit. An electrical signal from the light-receiving unit is recognized by a recognizing circuit. The apparatus also has a time counter for producing a signal of a constant period and a detection circuit for detecting if the electrical signal is produced from the light-receiving unit. The driving circuit turns on/off the light source at a proper timing in accordance with ON and OFF signals supplied from a signal generating circuit.
    Type: Grant
    Filed: October 17, 1983
    Date of Patent: January 28, 1986
    Assignee: Casio Computer Co., Ltd.
    Inventor: Shigeru Yamada
  • Electronic musical instrument
    Patent number: 4566363
    Abstract: A through hole is formed in the top wall of an inhalation hole which communicates with the outside by means of an elongate channel. The through hole is closed by an elastic member having a bulging portion. A projection is formed in the center of the bulging portion, and retains the extreme end of a movable contact of a contact mechanism. A fixed contact is fixed on a circuit board. When the bulging portion is depressed downward by inhalation, the movable contact is brought into touch with the fixed contact to produce an input signal.
    Type: Grant
    Filed: February 24, 1984
    Date of Patent: January 28, 1986
    Assignee: Casio Computer Co., Ltd.
    Inventor: Yoneaki Arai
  • Waveform data read signal generating apparatus
    Patent number: 4563932
    Abstract: A note ROM is addressed in response to a note code signal generated from a note code generator, and basic data is read out from the note ROM. The basic data is shifted by one higher bit and is thus doubled, and the shifted data is supplied to the A terminals of a full-adder. The basic data read out from the note ROM is supplied to the B terminals of the full-adder. The full-adder generates integer multiple data which has a value three times that of the basic data. This integer multiple data is decremented by one every time a clock is generated. When the integer multiple data becomes zero, a one-shot waveform data read clock signal is generated through an inverter.
    Type: Grant
    Filed: March 26, 1984
    Date of Patent: January 14, 1986
    Assignee: Casio Computer Co., Ltd.
    Inventor: Takuya Sunada
  • Electronic cash register
    Patent number: 4564904
    Abstract: An electronic cash register comprises first and second memories for storing the total accumulated sales data, and a start data storing memory for storing a time period corresponding to when a settlement operation of the second memory is to be performed. During the course of the settlement operation of the first memory, the cash register checks as to whether the time period has terminated or not. When it is lapsed, the settlement operation of the second memory is automatically executed.
    Type: Grant
    Filed: January 11, 1985
    Date of Patent: January 14, 1986
    Assignee: Casio Computer Co., Ltd.
    Inventor: Akira Kumagai
  • Interconnectable electronic game apparatus
    Patent number: 4564923
    Abstract: Electronic game apparatus which is interconnectable with other like game apparatus to enable two or more players to participate with their own apparatus, includes a keyboard section and a memory for storing a game program. Processing circuitry operates continuously to decode and implement the game program, according to data entered by the keyboard section. The processing circuitry also controls operations in the other like electronic game apparatus, when the apparatus is linked with such other apparatus through interconnect circuitry forming a part of the apparatus.
    Type: Grant
    Filed: October 26, 1981
    Date of Patent: January 14, 1986
    Assignee: Casio Computer Co., Ltd.
    Inventor: Harumi Nakano
  • Waveform information generating system
    Patent number: 4562763
    Abstract: A waveform step counter receives an output clock from a tone clock generator and an envelope status signal from an envelope counter. The waveform step counter generates an address signal for performing predetermined address skip, and a waveform memory is accessed in accordance with this address signal. Since the address signal performs the predetermined address skip, waveform information read out from the waveform memory indicates a timbre different from the original information stored in the memory.
    Type: Grant
    Filed: January 16, 1984
    Date of Patent: January 7, 1986
    Assignee: Casio Computer Co., Ltd.
    Inventor: Youzi Kaneko
  • Liquid crystal television receiver
    Patent number: 4562478
    Abstract: Within a case a main television circuit, a liquid crystal display panel for producing an image on a front side thereof, an EL light illuminating panel and a driving circuit which is driven to cause said EL light illuminating panel to emit light are accommodated. The EL light illuminating panel is mounted on the reverse side of said crystal display panel so as to emit light through and out of the front side of the panel.
    Type: Grant
    Filed: February 14, 1983
    Date of Patent: December 31, 1985
    Assignee: Casio Computer Co., Ltd.
    Inventors: Yukinori Hirasawa, Osamu Kameda
  • Automatic accompaniment apparatus
    Patent number: 4561338
    Abstract: A ROM has 16 memory locations of addresses No. 0 to No. 15. Bass pattern data for the first bar are stored in the memory locations of the addresses No. 0 to No. 7, and bass pattern data for the second bar are stored in the memory locations of the addresses No. 8 to No. 15. The memory locations of the addresses No. 0 to No. 7 are specified by respective counts "0" to "7" of a hexadecimal counter, and the memory locations of the addresses No. 8 to No. 15 are specified by respective counts "8" to "15" of the counter. The output of the counter for the counts "8" to "15" is supplied through a gate circuit to the ROM. The gate circuit is inhibited by the output of a chord designating key section.
    Type: Grant
    Filed: August 17, 1984
    Date of Patent: December 31, 1985
    Assignee: Casio Computer Co., Ltd.
    Inventor: Hiroko Ohno
  • Sheet-like compact electronic equipment
    Patent number: 4558427
    Abstract: A sheet-like compact electronic device includes an electronic parts assembly in which a semiconductor integrated circuit chip, a display element and a dry cell are arranged on a sheet-like board. The electronic parts assembly is flexible and is sandwiched between a sheet-like upper cover and a sheet-like lower cover. The upper cover is flexible and has a display window, and the lower cover is also flexible and has a flat lower surface.
    Type: Grant
    Filed: February 22, 1983
    Date of Patent: December 10, 1985
    Assignee: Casio Computer Co., Ltd.
    Inventors: Eiichi Takeuchi, Kazuya Hara
  • Automatic accompaniment generating apparatus
    Patent number: 4539882
    Abstract: A plurality of tone data indicative of the pitch and duration of a series of tones forming the melody of a number are stored in a performance memory by operating a key input section. Accompaniment chord data can be automatically obtained from an automatic chord generating circuit according to the tone data stored in the performance memory in which the accompaniment chord data thus obtained are stored together with melody data.
    Type: Grant
    Filed: December 21, 1982
    Date of Patent: September 10, 1985
    Assignee: Casio Computer Co., Ltd.
    Inventor: Keiji Yuzawa
  • LSP Voice synthesizer
    Patent number: 4541111
    Abstract: An LSP synthesizer (Line Spectrum Pair) includes an LSP voice synthesizer digital filter arranged for parallel operation upon voice parameters and excitation information, to obtain an LSP synthesized sound. The LSP voice synthesizer digital filter includes at least a parallel multiplier and a parallel adder. The parallel multiplier divides data into a set of upper bits and a set of lower bits and multiplies the upper and lower bits separately at specified different timings. The multiplication results are supplied to a delay circuit which adjusts timings of the multiplication results. These multiplication results are synthesized by the parallel adder to obtain a single piece of data.
    Type: Grant
    Filed: July 7, 1982
    Date of Patent: September 10, 1985
    Assignee: Casio Computer Co. Ltd.
    Inventors: Susumu Takashima, Takao Kanke, Naoki Inagaki, Kazumasa Fukushima
  • Electronic musical instrument
    Patent number: 4538496
    Abstract: The differentiation data of a basic waveform is read out from a differentiated value waveform memory at a clock timing corresponding to a musical scale of an operated play key, and it is multiplied by an envelope value of a musical sound waveform to form a musical sound waveform differentiation value. In parallel therewith, the differentiation data is accumulated at the clock timing to form a compensative value. The compensative value is added with the musical sound waveform differentiation value at the point of time at which the envelope value is changed to cancel a DC component which would otherwise develop in a produced musical sound waveform. The musical sound waveform differentiation values thus compensated are accumulated, and are subjected to digital-to-analog conversion, so that the musical sound waveform free from the DC component is produced.
    Type: Grant
    Filed: July 26, 1983
    Date of Patent: September 3, 1985
    Assignee: Casio Computer Co., Ltd.
    Inventor: Koutarou Hanzawa
  • Tone color setting apparatus
    Patent number: 4538495
    Abstract: Musical tone color setting apparatus is arranged so that when a program/preset switch, a feet switch envelope switch and modulation switch are actuated together with a selected key of a ten-key input unit, program tone color data obtained by combining data selected from three groups of tone color data is stored in a tone color data memory. A tone color data corresponding to the program tone color data stored in the memory is later read out from a ROM, and a music sound having a tone color corresponding to the tone color data is generated from a loudspeaker in response to operation of a keyboard.
    Type: Grant
    Filed: October 22, 1984
    Date of Patent: September 3, 1985
    Assignee: Casio Computer Co., Ltd.
    Inventor: Kunio Sato
  • Envelope control apparatus
    Patent number: 4537110
    Abstract: Under the presence of an internally generated mandolin clock (MDN) or an externally generated mandolin clock (MDN'), an envelope clock (ENV-CLK) obtained in accordance with a lower bit output having three-bit signals (including the LSB) is supplied through AND gates to an envelope counter. The counter is set in an up count state in response to an output from a flip-flop set in response to a key on pulse. When a carry signal is generated by the envelope counter, the counter is set in a down count state. In the latter case, the fourth-bit signal from the LSB of the output from the binary counter is gated through the AND gate. The envelope counter counts down the envelope clock (ENV-CLK) having a period twice that of the envelope clock (ENV-CLK) in the up count state.
    Type: Grant
    Filed: September 14, 1983
    Date of Patent: August 27, 1985
    Assignee: Casio Computer Co.
    Inventors: Keiichi Sakurai, Hideaki Ishida, Kohtaro Hanzawa
  • Touch response apparatus for electronic musical apparatus
    Patent number: 4535669
    Abstract: A touch response apparatus for an electronic musical instrument wherein a nonlinear analog-to-digital conversion is effected using a single A/D converter in correspondence with a plurality of keys, and wherein touch data are proportional to the period of time and amplitude value of an envelope waveform.
    Type: Grant
    Filed: July 8, 1983
    Date of Patent: August 20, 1985
    Assignee: Casio Computer Co., Ltd.
    Inventor: Youji Kaneko
  • Electronic musical instrument
    Patent number: 4534257
    Abstract: A plurality of channels for generating musical tones are provided in LSI chips. A CPU allots a performance mode selected by select switches to the channel or channels. The melody sounds or accompaniment allotted to the channels are generated by a time divisional processing under control of the CPU. The generated sounds are sounded through a loudspeaker, after being subjected to processing by a mixing circuit.
    Type: Grant
    Filed: August 27, 1984
    Date of Patent: August 13, 1985
    Assignee: Casio Computer Co., Ltd.
    Inventor: Tsuyoshi Mitarai
  • Bar code recognition apparatus
    Patent number: 4533825
    Abstract: A bar code recognition apparatus comprises a manual scanner for reading each code bar, a comparison circuit for comparing a width value detection signal to a reference value to produce a width value amplitude comparison signal, a ratio circuit for making a ratio between one and another of said width value detection signals to produce a ratio signal, and a character decoder for decoding the comparison signal and the ratio signal. Accordingly, one character output is provided corresponding to the width value detection signal of a detected code bar.
    Type: Grant
    Filed: June 15, 1983
    Date of Patent: August 6, 1985
    Assignee: Casio Computer Co., Ltd.
    Inventor: Shigeru Yamada
  • Electronic wristwatch with printer function
    Patent number: 4525075
    Abstract: An electronic wristwatch with a printer has a printing head which is arranged inside a wristwatch case with a recording paper loading portion and which performs printing on the recording paper. The printing head is moved by an operation member, and a displacement thereof is detected by a detecting portion. A print control circuit controls printing of the printing head in accordance with a speed corresponding to the displacement detected by the detecting portion.
    Type: Grant
    Filed: November 8, 1984
    Date of Patent: June 25, 1985
    Assignee: Casio Computer Co., Ltd.
    Inventor: Kazunori Kita
  • Electronic musical instrument for reading out and performing musical tone data previously stored
    Patent number: 4522100
    Abstract: An electronic musical instrument for reading out and performing musical tone data previously stored in a memory is disclosed. In the musical instrument, pitch data of a musical piece or pieces are previously stored in the memory. Desired pitch data stored are read out by operating a corresponding key arranged on a keyboard. A tone generator forms a musical tone signal on the basis of the pitch data for sounding the musical tone. When the keyboard is functionally divided into two groups, the musical tone for melody and/or accompaniment of the musical piece may be read out through the operation of the functionally divided keyboard.
    Type: Grant
    Filed: September 7, 1982
    Date of Patent: June 11, 1985
    Assignee: Casio Computer Co., Ltd.
    Inventor: Hiroshi Ishii