Trigger circuit unit for operating light emitting members such as leds or motors for use in personal ornament or toy in synchronization with music

#1. Field of the Invention

#The present invention relates to a trigger circuit and an operating circuit formed into a unit for transmitting a trigger electric signal in synchronization with the timing of signals of medium or low frequency sounds such as a drum or vocal which constitute the main portion of played or broadcasted music and which are selected from the overall frequency components included in the music so as to operate a light emitting member such as LEDs or a motor for use in a personal ornament or a toy in synchronization with the above-mentioned music.

#2. Related Art

#FIG. 1 is a functional block diagram which illustrates an example of a trigger circuit unit according to the present invention;

#FIG. 2 is a plan view which illustrates an example in which the trigger circuit unit according to the present invention is formed on a circuit substrate;

#FIG. 3 is a front elevational cross sectional view which illustrates the circuit unit shown in FIG. 2;

#A preferred embodiment of the present invention will now be described. FIG. 1 is functional block diagram which illustrates an embodiment of a trigger circuit unit according to the present invention. FIG. 2 is a plan view which illustrates an example of a structure so arranged that the trigger circuit unit according to the present invention is formed on a circuit substrate. FIG. 3 is a front elevational cross sectional view which illustrates an example of the circuit unit shown in FIG. 2. FIG. 4 is a plan view which illustrates another example so arranged that the trigger circuit unit according to the present invention is formed on a circuit substrate. FIG. 5 is a backside view of the circuit unit shown in FIG. 4. FIG. 6 is front elevational cross sectional view which illustrates the circuit unit shown in FIG. 4. FIGS. 7 to 9 respectively are functional block diagrams which illustrate examples of connections established with the basic trigger output of the functional block shown in FIG. 1 so as to regularly operating a plurality of members to be operated. FIG. 10 is a functional block diagram which illustrates a PLL circuit. FIG. 11 is a functional block diagram which illustrates another example of the trigger circuit unit according to the present invention and arranged in such a manner that the filter of the functional block shown in FIG. 1 is omitted and the PLL functional block is inserted into the structure in place of the wave detecting circuit and a forward-directional voltage generating circuit. FIG. 12 is a functional block diagram which illustrates an example of a photoelectric conversion circuit to be inserted into a forward circuit block of the functional block shown in FIG. 1. Referring to FIGS. 1 to 11, symbol SW represents a power switch, reference numeral 9 represents a power supply such as a battery connected to each of the circuit blocks shown in FIGS. 1 and FIGS. 7 to 11 via the aforesaid switch SW so as to supply electric power to the circuit blocks.

#In the circuit unit shown in FIG. 1 according to the present invention, reference numeral 1 represents a pickup circuit composed of a capacitor microphone or a piezoelectric device or the like. The pickup circuit 1 picks up signals of atmospheric sound of played music or the like so as to convert the signal into an electric signal of the sound of the music. Incidently, the present invention is not limited to the capacitor microphone. Furthermore, if the piezoelectric device is used in place of the microphone, the filter constant of a filter circuit 2 to be described later or the degree of the amplification of a limit amplifier circuit 3 must be changed in order to compensate the characteristics of the piezoelectric device which transmits a low level output in response to a low frequency sound of 1 KHz or lower and which efficiently responds to a high frequency sound.

#Reference numeral 2 represents a filter circuit composed of a capacitor and a resistor selected so as to cut both of the high frequency component and the low frequency component of the signals of the sound of music picked up by the pickup circuit 1. That is, the filter circuit 2 is mainly composed of a capacitor and a resistor so selected to pass only the medium and low frequency band from about 100 to 800 Hz of a general audible frequency band ranged from about 20 to 20 KHz and to cut the frequency bands across the aforesaid band.