Abstract: A tone synthesizer generating a marimba effect in which two percussion notes are sounded alternately an ocatve interval apart, simultaneously with and in response to the playing of a sustained note by depressing a key. The marimba tones are synthesized by alternately, at controlled intervals, calculating master data lists of the amplitude values representative of points on the waveforms of the two marimba tones and converting the respective master lists to analog waveforms by feeding the data in series to a digital-to-analog converter. The master data list for each tone in calculated by multiplying a set of coefficients for each tone with a set of sinusoid values. The coefficients correspond in value to the relative amplitudes of the harmonics of the tone. By sounding one set of coefficients with the odd number harmonics all equal to zero, the two resulting tones sound an octave apart.

Abstract: An electronic clock, particularly a quartz clock, with a timer signal transmitting stage, an indicator system which at least contains a minute counter and an hour counter, as well as a decoding stage and a digital indicator board, and an alarm system which at least contains a presettable counter associated with the minutes and a presettable counter associated with the hours, the outputs of which presettable counters are able to be locked on the indicator system, and a coincidence stage for comparison of the output signals of the counters of the indicator system with those of the alarm system. Each counter of the alarm system constitutes a forward-rearward-counter, and switches are provided for selection of the counting direction.

Abstract: In an electronic organ system having a plurality of tone generators one for each note to be sounded, and a time constant circuit for establishing first and second decay characteristics for each note, the first of which has a longer decay period than the second, a key-down detector for sensing the operated condition of any key of the keyboard, and a circuit operative in response to the key-down detector to cause the sounded notes to have the longer decay characteristic so long as any key of the keyboard is depressed and to cause the sounded notes to have the shorter decay characteristic when all keys are released, for producing a pseudo-reverberation effect.

Abstract: A keyboard type electronic musical instrument which is provided with a keyboard having an arrangement of keys corresponding to an arrangement of letter names based on the scale of the equal temperament of 12 degrees, a sound signal generator for generating sound signals of frequencies defined for the letter names, first and second gate circuit means having gate circuits respectively supplied with the sound signals from the sound signal generator, a first mixer for mixing the outputs from the gate circuits of the first gate circuit means, a frequency multiplier circuit for frequency multiplying the output from the gate circuits of the second gate circuit means, and a second mixer for mixing the outputs from the frequency multiplier circuit and the first mixer. The sound signals supplied to the gate circuits of the second gate circuit means have higher or lower frequencies than the sound signals supplied to the corresponding gate circuits of the first gate circuit means.

Abstract: An analog quartz timepiece having a manually operated external control member, and a correction signal generation circuit controlled by the external control member to generate low speed and high speed correction signals when the external control member is actuated for a short period of time and for a predetermined time interval, respectively, by which a stepping motor is driven at a selected speed to perform time correction. The timepiece alo includes a click mechanism operative to shift an hours hand step-wise from any optional position without affecting a minutes hand and a seconds hand. The timepiece further includes a seconds zero-reset mechanism operative to reset the seconds hand to zero.

Abstract: A key code generator for electronic musical instruments which has a group of memories respectively corresponding to blocks of key switches and temporarily storing their closed state, a block detector for detecting the memories corresponding to the blocks that even one key switch is in its closed state, a priority selector for sequentially designating the detected blocks in the order of priority, a block designating gate means for supplying clock pulses to the memories corresponding to the designated blocks to serially derive therefrom their information in accordance with the output from the priority selector, an encoder for encoding the output from the priority selector into a binary code, a counter for counting the clock pulses outputted from the block designating gate means, means for gating the count value of the counter and the binary code designating each block with the serial output read out of each memory, means for detecting a change in the binary code, and means for resetting the counter with the out

Abstract: A switch mechanism for a wristwatch having a case and a substrate mounted in the case, which comprises conductive contact means disposed on the substrate to be in registration with a switch position of the switch mechanism, stepped bore means provided in alignment with the contact means, a diaphragm assembly including a flange, an embossed portion integral with the flange, and a contact element provided on a bottom wall of the embossed portion to be in alignment with the contact means, pressure ring means for compressing the flange to retain the diaphragm assembly in place while providing a water-tight sealing effect, and push-button means disposed in the stepped bore means and normally engaging the embossed portion of the diaphragm assembly, said push-button means being movable to press the embossed portion and the contact element toward the contact means to close the switch mechanism when the push-button means is depressed.

Abstract: A watch case and band in combination comprising a back portion containing on the outer periphery thereof first locking means; a center portion comprising a portion of the band containing therein an opening sufficient in size to allow a watch module to pass therethrough and having in the outer periphery of the band around said opening a plurality of smaller openings in alignment with said first locking means; and a top portion having in the outer periphery thereof second locking means located so as to mate with said first locking means locking through said plurality of smaller openings in said band.

Abstract: An automatic winding device for weight driven clocks wherein the driving unit is contained inside a suspended winding weight, has a roller to wind a flexible pulling means upon and a motor within the suspended winding weight actuated by switch means in the zone of the lower end position and upper end position of the winding weight. The device of this invention provides desired traditional clock weight appearance while providing efficient, modern winding and adjusting of the clock.

Abstract: A string vibration transducer bridge for an electric string instrument including a plurality of string tension mechanism provided side by side in the bridge and which are adjustably movable along the direction of the string and includes a plurality of string supporting electrode parts which are slidably movable along the direction of the string and rotatable along a direction perpendicular to the string, a plurality of independent piezoelectric transducers which each engage with an undersurface of an electrode part, and a plurality of piezoelectric transducer pushing mechanisms for pushing the piezoelectric transducers against the electrode parts whereby the tension of the string may be adjusted by both the string tension mechanism and the transducer pushing mechanism and the vibration from each string is independently sensed.

Abstract: An electronic musical instrument comprises a plurality of musical tone forming systems capable of producing musical tones of different tone qualities. A priority is established between the respective musical tone forming systems and one which is of a highest priority among one or more such systems selected by a performer is automatically selected and a musical tone can be produced only from this selected system of the highest priority. The electronic musical instrument is capable also of producing musical tones from a plurality of predetermined systems simultaneously when the priority is rendered nonoperative thereby to produce an ensemble effect.

Abstract: An internal correction circuit is provided to correct the timepiece error caused by the crystal oscillator frequency changes. The timepiece operates by frequency dividing the oscillator frequency to obtain a predetermined operating frequency. The correction circuit is operated by the user on any initialization point, such as the start of any minute from a reference time source to generate a first input signal. The user at any following minute of the reference time source generates a second input signal.The correction circuit counts a first and second number of time units of different lengths between the first and second input signals. The circuit then forms a division ratio from the first and second numbers. That ratio is used to change the frequency divider division ratio to adjust the watch for the crystal frequency error just calculated.

Abstract: A toy timing device including an escapement-like mechanism regulating the movement of a movable portion toward a position on a housing toward which it is biased by the alternate slipping and sticking of parts of a rubber band extending over ribs on the movable portion as the rubber band parts move along a continuous surface of the housing.

Abstract: A digital alarm timepiece comprising an oscillator circuit for generating a standard time signal, a frequency dividing circuit, time counting circuits for counting output signals of the dividing circuit to provide a time signal, alarm time memory counting circuits for setting a selected alarm time, display means for selectively displaying the time signal and the set alarm time, alarm sound generating means and a coincidence circuit for activating the alarm sound generating means upon occurrence of coincidence between the set time of the alarm and the time signal has circuit means including manually operable switch means for amending the count of the time counting ciruits, to correct the time signal and for amending the count of the alarm time memory counting circuits to set a selected alarm time and means for activating the alarm sound generating means whenever the switch means is operated to amend the count of one or another of the counting means.

Abstract: An organ circuit and method of operation in which a detecting system detects combinations of keys played in the accompaniment portion of the keyboard arrangement of an electronic organ and through associated circuitry causes a respective chord to sound regardless of the particular position of the depressed keys or the particular chord inversion represented by the depressed keys.

Abstract: An electronic timepiece adapted to perform time correction in response to a train of time correction pulses transmitted from another electronic timepiece. The electronic timepiece comprises a detecting means to detect the train of time correction pulses; a writing-in signal generator circuit to generate writing-in signals in synchronism with a synchronizing signal contained in the train of time correction pulses, and a writing-in gate circuit means to perform writing-in of the train of time correction pulses into a timekeeping circuit of the timepiece as new current time data in response to the writing-in signals.

Abstract: A programmable voice characteristic memory system for programming any number of different specifications in an electronic digital organ. Digital information which defines voice characteristics in an electronic digital organ is stored in a read-write specification memory. Voice characteristic information may be selectively written into the specification memory from an external data inputting device such as a punched card reader or from an external non-volatile read-write memory such as a magnetic tape. Information stored in the specification memory may be transferred to and recorded on the external non-volatile read-write memory for permanent storage and future use. Voice characteristic information stored in the specification memory may also be accessed by the digital organ to generate musical tones in conventional fashion.

Abstract: An electronic battery-powered watch including an oscillator followed by a chain of frequency divider stages, said chain being composed of two parts with an interface circuit between said two parts, said interface circuit multiplying by a predetermined amount the voltage of the battery and the amplitude of the pulses issued from the last stage of the first part of the division chain in order to feed and control the second part of the chain and the decoding and display circuits of the watch.

Abstract: A time-keeping system of the type having an electromechanically driven, analog-type time display, has a purely electrical integral hour reset feature. The system comprises an analog time display including hour and minute hands driven through a mechanical transmission by a fast-response electromechanical motor. A stable oscillator generates a high frequency time base signal. A chain of frequency dividers coupled to the oscillator develops a time-keeping signal at a minute-related frequency for driving the analog time display in a normal time-keeping mode, and for developing hour reset pulses at a frequency much higher than one pulse per second for driving the analog time display during an integral hour reset operation.

Abstract: A method of making electrical devices, and the electrical devices made thereby, comprising the steps of: stamping from a sheet of metal a pattern of conductors configured to connect circuit components together in a relationship which forms a useful product, such as a watch, with the terminals of each of said circuit components being adjacent and connectable to appropriate terminating means formed in said pattern of conductors when said circuit components have predetermined positions adjacent said pattern of conductors; encapsulating said pattern of conductors with plastic having cavities and apertures formed therein, the cavities each having a configuration and a location to receive one of said circuit components therein in said predetermined positions and with said terminating means extending into said cavities to terminate the terminals of said circuit components; forming at least some of said component terminals on the surface of said components in positions to bend over the terminating means when the comp