Abstract: The present invention relates to a copying apparatus capable of changing the copying magnification, by moving and positioning optical members such as lens and mirror and changing the scanning speed of the scanning optical system, wherein the moving and positioning of optical members and the selecting of the scanning speed can be attained by a single motor.

Abstract: In a recording apparatus of this invention, liquid crystal light shutter operates by using the double frequency drive. The double frequency drive employs a higher frequency f.sub.H and lower frequency f.sub.L. The dielectric anisotropy becomes positive in the case of the lower frequency f.sub.L than crossover frequency f.sub.C and becomes negative in the case of the higher frequency f.sub.H than the frequency f.sub.C of liquid crystal material. The driver circuit of liquid crystal light shutter includes a delay circuit (146). Both a recording data delayed through the delay circuit (146) and a recording data formed without going through the delayed circuit (146) are produced in an LSI, to be supplied to write selecting electrodes and signal electrodes of the liquid crystal light shutter, thereby driving the liquid crystal light shutter in a time sharing manner.

Abstract: An electronic cash register is provided with a box protruding from its back. The box has a frame portion for fixing the box to the electronic cash register. By fitting the frame portion on the electronic cash register, the box is fixed to the electronic cash register housing so as to project from its back. The electronic cash register is further provided with engaging portions on its back. Panels for advertisement are removably retained by means of the engaging portions.

Abstract: In an automatic music playing apparatus, musical data entered at a keyboard are temporarily stored in a RAM and are sequentially recorded on a magnetic tape. The RAM has a memory capacity larger than the longest musical data to be recorded on the magnetic tape and has memory areas which are all accessed by a CPU. The musical data is then recorded in a predetermined data area on the magnetic tape.

Abstract: Tone data produced by operating a keyboard is stored in a RAM to be saved into a tape recorder through an interface. Of a plurality of music numbers saved in the tape recorder a selected one is loaded into the RAM through the interface. A tone generator converts the tone data from the RAM into a tone signal which is sounded from a loudspeaker. The save and load operations are all controlled by a CPU.

Abstract: In response to the data input from a keyboard, a tone clock generator generates a tone clock signal. The tone clock signal is counted by a waveform step counter. The output of the counter is used for making an access to a waveform memory. The waveform memory stores first and second waveform data of which the periods respectively are divided into a different number of addresses. One of the first and second waveform data read out from the waveform memory by the output of the counter is selected, according to the key-in data.

Abstract: In a handy reader/printer apparatus for reading recorded information from a desired portion of a medium to be read and printing read information on a desired portion of a medium to be printed, the apparatus has a housing having an opening in a lower surface thereof and placed on the medium to be read or printed such that the desired portion of the medium can be fitted in the opening, a reader unit, arranged in the housing, for reading the recorded information of the desired portion of the medium to be read fitted in the opening while the housing is placed on the medium, a printer unit, arranged in the housing, for printing data in the desired portion of the medium to be printed fitted in the opening while the housing is placed on the medium, a memory for storing data read by the reader unit upon operation of the reader unit, and a readout unit for reading out the storage data from the memory as the printing data to the printer unit upon operation of the printer unit.

Abstract: Melody information representing pitches and durations of tones is stored in a first area of a RAM whose addresses are designated by a first address counter of an address register. Performance information representing tone colors, vibrato, etc. is stored in a second area of the RAM whose addresses are designated by a second address counter of the address register, while the stored melody information is read out and reproduced. The melody information and performance information stored in the respective areas of the RAM are read out in associated relation with respect to one another, to be sounded from loudspeakers.

Abstract: A small piece of electronic equipment having an initializing function to be driven by a battery has an arthmetic memory and a special check data memory. When a specific key to designate the clear processing is operated in a key input section, it discriminates the checked data stored in the check data memory by an arithmetic operating section which judges if the check data has been replaced by another. If the checked data is found to be not replaced by another in accordance with its discrimination result signal, a control signal which allows the clear processing to clear the contents of the partial memory area of the arithmetic memory is generated by control circuits. If the checked data is found to be replaced by another, a control signal for permitting initialization processing to be executed is generated.

Abstract: First and second voltages of different levels are supplied to first and second key switches, which are consecutively turned on with the depression of a performance key on a keyboard. The output terminals of the first and second key switches are commonly connected to a common connection node, which is in turn commonly connected to input terminals of first and second buffers having different input threshold levels. A tone signal with a touch response is obtained through a response data generating circuit according to the outputs of the buffer circuits.

Abstract: In an apparatus which calculates tabulated data in at least one of lateral and vertical directions; a tabulated data totalizing and calculating apparatus comprising discriminating means to discriminate a sort of a ruled line which demarcates the tabulated data, to determine whether it is a single straight line, double line, dotted line and so on, and calculating means to perform addition, subtraction, multiplication, division and other calculations of the tabulated data in at least one of the lateral and vertical directions on the basis of information produced by the discriminating means. The apparatus includes the output means to display a result obtained by the calculating means at a predetermined position.

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.

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 a 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: Rhythm sound data which represents a rhythm sound such as a percussion sound, is synthesized with envelope data by a gate circuit which functions as a multiplier. The synthesized data is supplied to a D/A converter and converted to an analog signal. A percussion sound with a rhythm pattern corresponding to the analog signal is produced at a speaker.

Abstract: A portable television reciever of the panel type, having a pocketable size, is provided with about 1/8 the number of scanning electrodes as effective T.V. picture scanning lines, and a panel type picture display device with a double matrix array in which two picture element electrodes lying on each of the signal electrodes commonly provided in the direction of the width of said scanning electrodes are disposed in opposition to each other. A display circuit is driven at a duty cycle expressed as follows: ##EQU1## where A is the number of fields constituting one frame, B is the number of horizontal periods for a video signal assigned to a scanning electrode; and C is the number of scanning lines.

Abstract: An electronic calculator with a check function has at least two display parts. A calculating formula inputted with keys is continuously indicated on one display part. At the same time, operated result data corresponding to the data indicated on the one display part is indicated on the remaining display part. Some data of the inputted calculating formula may be amended during the display and replay of the formula, and the corrected final result data is indicated on the display.

Abstract: A data reader has a data reading means for reading data from a recording medium and producing an analog signal. The data reader also has a switching circuit having one terminal connected to the output terminal of the reading means. When the potential difference across the two terminals of the switching circuit falls within a predetermined range, the switching element is turned off. The switching element is turned on when the potential difference falls outside the predetermined range. The reader further has a hold circuit connected to the switching circuit and for holding a potential applied thereto. The reader also has a comparator which compares the analog signal from the data reading means with the potential held by the hold circuit and which produces a digital signal.

Abstract: A key-in device has a key-in section with a matrix array of keys. A key-actuated signal corresponding to a handwritten character input by the key-in section is input to an input pattern memory of a character recognition section, where an input pattern is formed and stored. The character recognition section has a standard pattern memory, having stored the standard pattern of a character to be recognized. A first feature detecting section extracts feature data from the input pattern in the input pattern memory. A first matching section detects a standard pattern coincident with the feature data extracted from the first standard pattern memory, and produces the character data input by the key-in section as a recognizable character.

Abstract: Digital pan-pot data supplied from a CPU is supplied to first and second analog multiplexers, and control signals are selected among a plurality of control signals obtained by dividing an output from a reference voltage generator to have mutually complementary relationship, are supplied from the first and second analog multiplexers through low-pass filters to control signal input terminals of first and second VCAs. An output of the first VCA is supplied to a right loudspeaker as an R-channel musical signal, and an output of the second VCA is supplied to a left loudspeaker as an L-channel musical sound signal, respectively.