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| Number | Title | Issue Date |
| 4224856 | Waveshape memory type keyboard electronic musical instrument In a keyboard electronic musical instrument of waveshape memory type wherein different waveshapes read out from memories are mixed together at a variable mixing ratio according to variable parameters and then converted to a musical tone, the variable para... | 09/30/1980 |
| 4193038 | Key input apparatus A key input apparatus is provided with a plurality of input operation keys and a time signal generating circuit which in correspondence to the number of these input keys performs a step operation to generate in turn a different timing signal. Input signal... | 03/11/1980 |
| 4190826 | Multidevice position digital encoder At least one movable device is mechanically coupled to a coupling device which moves in response to the motion of the movable device. The coupling device moves in a path which closely parallels the path of a time-varying, propagating electric field. Upon ... | 02/26/1980 |
| 4182210 | Keying system for an electronic musical instrument A keying system for an electronic musical instrument in which the absolute value of the amplitude of a musical tone signal generated with a predetermined periodicity is detected so that gating of the musical tone signal is allowed only when the amplitude ... | 01/08/1980 |
| 4170768 | Key code generator 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 ... | 10/09/1979 |
| 4161128 | Electronic musical instrument An electronic musical instrument comprises a circuit for generating a stepwise envelope waveform which modulates a musical tone waveform signal, a detecting circuit for detecting the phase of the musical tone waveform signal where the amplitude of the mus... | 07/17/1979 |
| 4148017 | Device for detecting a key switch operation A device for detecting a key switch operation capable of detecting an operating state of a plurality of key switches which are commonly connected with respect to each row line (block line) at one terminal thereof and commonly connected with respect to eac... | 04/03/1979 |
| 4143327 | Method and apparatus for generating tone signals and the like A method and apparatus for generating tone signals and the like in which a given frequency is employed for controlling a counter arrangement at a frequency which is equal to the frequency of the given signal multiplied by a factor other than a whole numbe... | 03/06/1979 |
| 4137810 | Digitally encoded top octave frequency generator A LSI (large scale integrated circuit) device is disclosed which generates 12 output frequencies related to each other by a multiple of the twelfth root of two from a common time base without the use of parallel divider or shift register strings. The outp... | 02/06/1979 |
| 4136595 | Single bus keyboard An inexpensive single bus keyboard circuit for voltage controlled electronic musical instruments. The keyboard signal voltage is sampled and stored after each depression of a key, or release of a key when other keys are held in a depressed state, and a ga... | 01/30/1979 |
| 4132139 | Rhythm selection switch assembly for electronic musical instruments A rhythm selection switch arrangement mounted on the operation panel of an electronic musical instrument. The switch arrangement comprises a plurality of on-off push changeover switches arranged successively and a changeover push switch disposed adjacent ... | 01/02/1979 |
| 4114497 | Electronic musical instrument having a coupler effect An electronic musical instrument is of a type wherein musical tone waveforms are stored in a memory as their sampled amplitudes and sequentially and repetitively read out to constitute tone waveforms. A key depression brings forth key code in a digital re... | 09/19/1978 |
| 4108035 | Musical note oscillator The disclosure describes an improved digital oscillator for use in an electronic musical system capable of converting electrical tone signals into corresponding sound waves. The oscillator includes an adder, accumulator and multiplexer for selectively tra... | 08/22/1978 |
| 4106383 | Register arrangement for an electronic musical instrument A register arrangement is provided for an electronic musical instrument (such as an electronic organ) whereby the various functional units of the instrument are actuated by electronic selector switches each one of which in turn has a control conductor to ... | 08/15/1978 |
| 4099437 | Remote control wireless keyboard musical instrument A musical instrument which comprises (i) a portable transmitter unit, (ii) a receiver unit, and (iii) a standard or modified piano, electronic organ, or other keyboard musical device. The transmitter unit has sixty keys, each of which corresponds to a key... | 07/11/1978 |
