JPH0389486U

JPH0389486U -

Info

Publication number: JPH0389486U
Application number: JP14875189U
Authority: JP
Priority date: 1989-12-26
Filing date: 1989-12-26
Publication date: 1991-09-12

Description

[Brief explanation of drawings]

第１図は、本考案の実施例の全体構成図、第２
図は、センサ部、センサ制御部の詳細な構成図、
第３図は、センサ部、センサ制御部の動作タイミ
ングチヤート、第４図は、従来例の構成図、第５
図は、従来例の動作説明図である。１……センサ部、１０１……光センサ、１０１
Ａ１〜１０１Ａ８……発光素子、１０１Ｂ１〜１
０１Ｂ８……受光素子、１０２……信号発生回路
、１０２Ａ……キヤリア信号発生器、１０２Ｂ１
〜１０２Ｂ８……変調器、１０２Ｃ１〜１０２Ｃ
８……電流増幅器、１０３……センス信号発生回
路、１０３Ａ１〜１０３Ａ８……検波器、１０３
Ｂ１〜１０３Ｂ８……ラツチ、２……センサ制御
部、２０１……スイツチ信号発生器、２０２……
ラツチ信号発生器、２０３……駆動制御信号発生
器、３……発音制御部、４……発音部。 FIG. 1 is an overall configuration diagram of an embodiment of the present invention, and FIG.
The figure shows a detailed configuration diagram of the sensor section and sensor control section.
Fig. 3 is an operation timing chart of the sensor section and sensor control section, Fig. 4 is a configuration diagram of a conventional example, and Fig. 5
The figure is an explanatory diagram of the operation of the conventional example. 1... Sensor section, 101... Optical sensor, 101
A1-101A8...Light emitting element, 101B1-1
01B8... Light receiving element, 102... Signal generation circuit, 102A... Carrier signal generator, 102B1
~102B8...Modulator, 102C1~102C
8... Current amplifier, 103... Sense signal generation circuit, 103A1 to 103A8... Detector, 103
B1-103B8...Latch, 2...Sensor control unit, 201...Switch signal generator, 202...
Latch signal generator, 203... Drive control signal generator, 3... Sound generation control section, 4... Sound generation section.

Claims

[Claims for Utility Model Registration] 1. Consisting of a musical tone generating means for generating musical tones, and a plurality of pairs of light emitting elements and light receiving elements arranged in parallel, the light beam emitted from the light emitting elements is sensed by the corresponding light receiving element. an input sensing means for driving the respective input sensing means; a driving means for driving each of the input sensing means; determining whether or not a performance is being performed based on the output of each of the input sensing means, and controlling the operation of the driving means based on the determination result. and a sound generation control means for controlling the musical tone generating means and generating a corresponding musical tone based on the output of each of the input sensing means obtained by the driving operation of the driving means. An electronic musical instrument. 2. The drive control means is configured to have either a first state in which the drive means drives only at least one predetermined one of the input sense means, or a second state in which the drive means drives all of the input sense means. and when the driving means is in the first state,
controlling the driving means to be in the second state when the at least one predetermined input sensing means detects interruption of the light beam, and the driving means is in the second state; To,
If the interruption of the light beam is not detected in any of the input sensing means for a predetermined period of time,
The drive means is controlled to be in the first state, and the sound generation control means is controlled so that the drive means is in the second state.
2. The musical tone generating means is controlled based on the output of each of the input sensing means obtained by the driving operation of the driving means, and the corresponding musical tone is generated when the musical tone generating means is in the state of electronic musical instruments. 3. The electronic musical instrument according to claim 1, wherein the driving means repeatedly drives each of the input sensing means in a time-division manner.