Abstract: A video signal analog-to-digital converter for an image display device comprises a reference signal generator, which can detect variations of the average level of a video signal and generate a variable upper and a variable lower reference potential in accordance with the variations detected. An analog-to-digital converting circuit A/D converts the video signal between present variable upper and lower reference potentials to produce a digital code signal. Brightness control of an LC display panel is done according to the digital code signal.

Abstract: An electronic musical instrument employs a novel technique to produce a musical sound. A major part of a musical sound producing section of the electronic musical instrument is constructed by digital circuitry which is well adapted for an LSI fabrication. The electronic musical instrument comprises a volume control means to digitally perform a volume control to increase or decrease a performance volume, a period counting means to count one cycle of a musical sound wave by a plurality of counting steps in order to form a musical sound wave under digital control, a period control means to control the period counting means in accordance with the scale represented by depressed performance key, and a means to instruct the rise and the fall of a musical sound wave by a value which is an integral multiple of a control value of the volume control means, for each block including a predetermined number of counting steps.

Abstract: A sound generating device for a jogger has a generator circuit for generating pace signals the frequencies of which are different from each other in correspondence with different tempos and for generating reference clock pulses, a time counter for receiving and counting the reference clock pulses, and circuits for selectively supplying pace signals the frequencies of which are different from each other and which are supplied from the generator circuit. In response to an instruction signal generated by a switching operation, the time counter starts counting. Simultaneously, based on a selected pace signal from the generator circuit, a desired pace sound can be produced.

Abstract: A printing apparatus includes an electronic cash register body provided with a keyboard including entry keys and subtotal-closing key. An associated central processing unit includes registers for storing data to be printed and sends printing data furnished by key operation. When the subtotal-closing key is actuated, a recording sheet held in a printing section is caused to move forward a pre-determined distance after printing is completed, and a setting mark is printed on the recording sheet. The setting mark allows the recording sheet to be aligned with the printing section so that printing will continue from the next successive data line when the recording sheet is reinserted in the printing section.

Abstract: The present invention provides a touch response apparatus for an electronic keyboard instrument wherein, in controlling a touch response state by detecting a key depression speed in the electronic keyboard instrument, the touch response states of keys are detected by detection means smaller in number than the keys, and the difference of detection outputs attributed to the different mounting positions of the contacts of a white key and a black key is also compensated.

Abstract: Electronic equipment has a memory which stores input data to be displayed. The data read out from the memory is formed as a corresponding character pattern signal and is output from a character pattern generator. The character pattern signal generated by the character pattern generator is displayed in n characters at a display section in response to a first mode signal which is supplied by a mode switching section. The mode switching section supplies different display mode signals determined by the contents of the data to be displayed. The character pattern signal from the character pattern generator is displayed in m characters (n<m) at the display section in response to a second mode signal supplied by the mode switching section.

Abstract: In an LSI chip including a control section and a tone generating section, a plurality of tones are simultaneously produced in a time division basis processing for a plurality of channels. The control section is coupled to a keyboard and a performance memory via bus lines, and the control section controls the tone generating section such that a tone having specified tone color and pitch is selectively provided for a particular channel.

Abstract: An electronic register of the invention has, at an input unit, at least a first selection key which is operated for performing the normal registering, a second selection key which is operated for performing single item registering for accumulating sales data according to both classification and payment type, and keys for designating the item number codes. A memory has a first memory for storing sales data input by the operation of the keys in memory locations according to the item number codes, and a second memory for storing the sales data according to the payment types. When the first selection key is operated, the normal registering is performed. When the second selection key is operated, the sales data is stored in the first memory and is printed on a receipt sheet in the single item registering mode and the receipt is issued. The sales data is also classified according to the payment types and stored in the second memory.

Abstract: A key data entry system for an electronic musical instrument comprises a keyboard having a plurality of user operable chord specification keys, a detector for detecting the key operation state of the chord specification keys, a first specifying device for specifying a particular one of the operated chord specification keys and a second specifying device for specifying the number of chord specification keys operated at one time. Further provided is a chord designating device which designates the root note and the kind of a chord to be produced as a function of the particular one of the operated chord specification keys and the number of chord specification keys operated at one time. In one implementation, one type of chord is produced when only one chord specification key is operated, a second type of chord is produced when two of the chord specification keys are operated together and a third type of chord is produced when three or more of the chord specification keys are operated together.

Abstract: An electronic translating machine with an extended memory includes a basic memory for storing a number of codes corresponding to words constituting a dictionary in a predetermined order, and an extended memory which is arranged separately from the basic memory and which stores in a predetermined order codes corresponding to words different from the codes stored in the basic memory. When addresses are accessed, the code of a corresponding word is read out from the basic memory and the code of a corresponding word is also read out from the extended memory. These codes are compared in a comparator in a control stage of a control circuit. The comparator selects one code according to a predetermined order. The words of the codes read out from the basic memory and the extended memory are sequentially displayed at a display section in the order of words listed in a dictionary.

Abstract: An electronic fighting sport game apparatus includes stamina data memory sections which store initial and current stamina data of fighters or boxers. A stamina data arithmetic section reads out the current stamina data of the attacked boxer from the stamina data memory section when one of the boxers delivers a clean punch. The readout stamina data is decreased by a predetermined amount. The decreased stamina data is stored again in the stamina data memory section. The action or movement of the boxers is performed in accordance with stamina data. The winner or loser is judged by determining whether the final stamina data of a boxer is larger or smaller than that of his opponent.

Abstract: A resonance characteristic control unit is provided with a first memory for storing first data corresponding to poles of a digital filter under a non-resonance condition, and a second memory for storing second data corresponding to poles of the filter under maximum resonance amplitude condition. The data stored in these memories are read out to calculate a filter coefficient corresponding to the resonance amplitude. The calculated resultant data is supplied to the digital filter to obtain a filtered output which is provided with a desired resonance characteristic.

Abstract: A time display device includes a memory, in which a plurality of successive time data items are memorized. With the operation of an external manual switch, two or more time data items among those memorized in the memory are read out and supplied to an optical display unit. Two or more time data items are simultaneously displayed in the optical display unit.

Abstract: Basic frequency data is preliminarily stored in a ROM. Tuning data obtained from a tuning counter according to manual operation of a rotary switch, and basic frequency data out from the ROM are processed in a CPU to form modified frequency data, which is stored in a RAM. The modified frequency data stored in the RAM is selectively read out according to the operation of the keyboard, so that a tuned note sound is produced from a loudspeaker.

Abstract: An electronic cash register for printing designated data includes a keyboard having a plurality of keys. The keyboard has a switch for designating a write-in mode and a read-out mode and a plurality of keys including ten keys, function keys, etc. The data coupled by the operation of these keys are stored in the journal memory. The data to be read out in the read mode are stored in a register included in a CPU. The CPU performs a comparison of the data from the journal memory and the designated data read out from the register in the CPU in its calculating section and, when the compared data coincide, the read-out designated data are output for display in a display section or printing in a printing section.

Abstract: A voice data output apparatus for an electronic cash register comprises in turn a voice output circuit which in turn judges as to whether or not the input money data is a first registered number and which outputs a greeting voice, e.g., "WELCOME" when it is in fact the first registered number. A CPU is connected to an input circuit, a print circuit, a display circuit, a RAM and the voice output circuit through chip designating signal lines, an R/W signal line, an address bus line, and a data bus line. Chip designating signals are supplied from the CPU to the above-mentioned respective circuits for selecting a circuit to be used among these circuits. The display circuit and the voice output circuit are selected by the same chip designating signal.

Abstract: An electronic keyboard musical instrument is capable of inputting rhythmic patterns by setting desired rhythmic patterns in memory circuits using the keys of keyboards. The set rhythmic patterns operate a rhythm source circuit when read out from the memory circuits during performance and thereby output rhythm sounds.

Abstract: A voice data output apparatus having a voice output circuit which audibly produces an operator guidance to show the next operation to an operator and repeats the vocal sound of the operator guidance until an operation is performed in an input circuit in accordance with the operator guidance. A CPU is connected to a print circuit, a display circuit, a RAM, the input circuit and the voice output circuit, through chip designating signal lines, a read/write signal line, an address bus line, and a data bus line. The CPU transfers chip designating signals to the respective circuits to select the circuit to be used. The display circuit and the voice output circuit are selected by the same chip selecting signal. The voice output circuit has a CPU which has at least a register for storing inputted data and a plurality of memory areas for arithmetic operation.

Abstract: An electronic dictionary stores words of a first language and words of a second language, in a first dictionary memory and a second dictionary memory, respectively. The stored words in the first and second dictionary memories can be displayed selectively as source language words at a display section upon operation of a search key on a keyboard. Either a word of the first language or a word of the second language is displayed as a corresponding object language word on the display section, after the source language word displayed at the display section is translated in response to a translation instruction.

Abstract: Code data representing a plurality of note frequencies are stored in a first ROM and are selectively read out according to key operation of a keyboard. With the operation of a key, predetermined control data is also obtained, and this control data is cumulatively added to or subtracted from the code data as an initial value, whereby a note frequency signal corresponding to the operated key is obtained. Portions of the waveform of the resultant note frequency signal where there is a sharp change in amplitude are interpolated with a sine wave stored in a second ROM.