KR900008784Y1 - Remotecontrol mute and pause combined use circuit - Google Patents

Abstract

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Description

Remote control mute and pose combination circuit

The accompanying drawings are detailed views showing an embodiment of the mute and pose combination circuit of the present invention.

* Explanation of symbols for main parts of the drawings

2: integrated device for receiving remote control 3: cassette deck selection unit

4: flip-flop 5: mute control unit

6: pose control unit 7: pose clearing unit

MT / PA: Mute / Pose Signal M: Motor

SW2: Stop switch

The present invention is equipped with a cassette deck, AM receiver, FM receiver, Phono, AUX and CDP (Compact Disc Player), such as a component system, and the like. The present invention relates to a remote control mute and pause combination circuit for performing a mute function and a pause function.

In the conventional remote control, a key for instructing the cassette deck to stop moving the tape and a command for muting the voice signal output of the AM receiver, the FM receiver, the phono, the AUX and the CDP are separately provided. there was.

However, the pause function and the mute function are the same functions that ultimately prevent the audio signal from being outputted. As a result, two function keys need to be attached to the remote control, and the configuration of the internal circuit of the remote control becomes complicated. There is a problem that the receiving unit for receiving the transmission signal is also complicated.

The present invention provides a mute and pose combination circuit that installs a mute / pose key on a remote control and uses a mute function and a pose function in response to pressing the mute / pose key. It will be described in detail by the accompanying drawings to the invention as follows.

1 is a detailed view showing an embodiment of a mute and pause circuit of the present invention, as shown therein, a function selection integrated device 1 for selecting an operation function, and a remote controller for receiving and processing a transmission signal of a remote control; Cassette deck comprising a receiving integrated device 2, a selection switch SW1 for discriminating the selection of the cassette deck, a light emitting diode LD, resistors R1-R3, diodes D1, D2, and transistor TR1 A flip-flop (4) which toggles according to a mute / pose signal (MT / PA) output by the selection discriminating unit (3), the remote control receiving integrated device (2), and outputs a mute and pause control signal; A mute control section 5 made of a noar gate NR1, a diode D3, and a transistor TR2 which mute the output of the audio signal in accordance with the output signals of the deck selection discriminating section 3 and the flip-flop 4; Cassette tapes according to the output signals of the cassette deck selection discriminating section 3 and the flip-flop 4 A pause control unit 6 including an inverter 11, a no-gate NR2, diodes D4 and D5, resistors R4-R6, and transistors TR3 and TR4 that temporarily store driving of the motor M to travel. And a resistor (R7-R10) that clears the flip-flop (4) in response to the selection signal output from the cassette deck selection discriminating unit (3) and the inversion of the cassette deck and the stop switch (SW2) of the cassette deck. ), The capacitor C, the transistors TR5 and TR6, the noar gate NR3, and the pause clear portion 7 composed of the diode D6.

In the above, the selection switch SW1 is arbitrarily connected when the user selects the cassette deck, and the stop switch SW2 is connected at the constant speed, fast forward and rewind of the cassette deck, and is opened when the stop and the tape are completed.

In the description of the drawings, reference numeral EQ is an equalizer amplifier, MAMP is a main amplifier, and B + is an operating power supply.

The present invention configured as described above selects the cassette deck selection unit 3 when the user selects the AM receiver, the FM receiver, phono, AUX, CDP, etc. without the cassette deck selected when the operating power source B + is applied. If the switch SW1 is not connected, the high potential is input to the input terminal of the function selection integrated device 1, so that the function selection integrated device 1 recognizes that the cassette deck is not selected, and the light emitting diode LD ) Does not light up.

Then, since the operating power source B + is applied to the base of the transistor TR1 through the resistor R1 and the diode D2 and turned on, the collector potential of the transistor TR1 becomes low potential, and the low potential is muted. 5) is applied to one input terminal of the noah gate NR1.

In such a state, when the remote control receiving integrated device 2 outputs a high potential mute / pose signal (MT / PA) by pressing the mute / pose key of the remote control, the output mute / pose signal (MT / PA) The output terminal Q is applied to the clock terminal CK of the flip-flop 4 because it is toggled. Output high potential and low potential, respectively The low potential of is applied to the other input terminal of the noble gate NR1.

Accordingly, both input terminals of the noah gate NR1 become low potential, and the high potential that he outputs and outputs the high potential is applied to the base of the transistor TR2 through the diode D3, so that the transistor TR2 is turned on. The voice signal output from the equalizer amplifier EQ is grounded through the transistor TR2, and the voice signal is muted.

In this state, when the remote control receiving integrated device 2 outputs a high potential mute / pose signal (MT / PA) by pressing the mute / pose key of the remote control, the flip-flop 4 is toggled again to output terminal ( Q) Since the low potential and the high potential are respectively output, the NOA gate NR1 outputs the low potential so that the transistor TR2 is turned off and the audio signal is normally output.

The low potential, which is the collector potential of the transistor TR1, is inverted to a high potential through the inverter 11 of the pause control unit 6, and then applied to the base of the transistor TR3 through the diode D5 and the resistor R4. In addition, it is applied to one input terminal of the noah gate NR3 of the pause clear unit 7.

Therefore, as the transistor TR3 is turned on and the transistor TR4 is turned on and the stop switch SW2 is connected to the cassette deck for constant speed playback, fast forward and rewind, the motor M is driven to drive the tape. Noah gate NR3 continues to output a low potential regardless of the potential applied to the other input terminal thereof so that flip-flop 4 is not cleared.

On the other hand, when the user connects the selector switch SW1 to select the cassette deck, the operating power source B + flows to the selector switch SW1 through the resistor R1 and the light emitting diode LD so that the light emitting diode LD is provided. Is lit to indicate the selection of the deck, and the low potential is input to the function selection integrated device 1 so that the function selection integrated device 1 performs the selection operation of the cassette deck.

Then, the operating power source B + flows through the resistor R2 and the diode D1 to the selection switch SW1, and a low potential is applied to the base of the transistor TR1 so that the collector potential of the transistor TR1 is turned off. Becomes a high potential, and the high potential is applied to one input terminal of the noble gate NR1 and is inverted to a low potential through the inverter 11 and applied to one input terminal of the noble gates NR2 and NR3. ) Keeps outputting low potential regardless of the potential applied to the other input terminal thereof, the transistor TR2 is turned off and the audio signal is normally output, and the noah gates NR2 and NR3 are applied to the potential applied to the other input terminal thereof. Therefore, high potential or low potential is output.

At this time, the output terminal Q of the flip-flop 4 Assuming that the low potential and the high potential are respectively output, the NOA gate NR2 outputs the high potential so that the transistor TR2 is turned on and the transistor TR3 is turned on.

Therefore, when the stop switch SW2 is connected by pressing the constant speed playback button, fast forward button and rewind button of the cassette deck, the motor M is driven to drive the tape. As the stop switch SW2 is connected, the transistor TR5 is turned on, the transistor TR6 is turned off, and a high potential is applied to the other input terminal of the noah gate NR3, so that the noah gate NR3 outputs a low potential. Is not cleared.

In this state, when the mute / pose key of the remote control is pressed and the mute / pose signal MT / PA is output from the remote control receiving integrated device 2, the flip-flop 4 is toggled so that its output terminal Q is used. Since the high potential and the low potential are respectively output, the noble gate NR2 outputs the low potential.

Therefore, since the transistor NR3 is turned off and the transistor NR4 is turned off, the driving of the motor M is stopped and the pause function is performed.

In such a state, when the mute / pose key of the remote control is pressed and the mute / pose signal MT / PA is output again from the remote control receiving integrated device 2, the flip-flop 4 is toggled so that its output terminal Q Since the low potential is output, the NOA gate NR2 outputs a high potential, the transistors TR3 and TR4 are turned on, and the motor M is driven to release the pause operation.

Then, when the driving of the tape is completed while the motor M is driven and the tape is running, the stop switch SW2 is opened. Since the transistor TR5 is turned off and the transistor TR6 is turned on, the NOA gate NR3. The low potential is applied to both input terminals of) so that the high potential is output, and the output high potential is applied to the clear terminal CL of the flip-flop 4 through the diode D6 so that the flip-flop 4 is applied. Cleared to the initial operation state.

As described in detail above, by performing a mute function and a pause function with one mute / pose key of the present invention, the remote control is simplified, the configuration of an internal circuit and a receiver for receiving a signal of the remote control are simplified. Has the effect of.

Claims (1)

Toggle between a cassette deck selection discrimination unit (3) for discriminating the selection of cassette decks and a mute / pose signal (MT / PA) output by the remote control receiving integrated device (2) as the mute / pose keys of the remote control are pressed. A flip-flop 4 for outputting a mute and pause control signal, a mute control unit 5 for muting the output of a voice signal according to the output signals of the cassette deck selector 3 and the flip-flop 4; Switching of the pause control unit 6 for stopping driving of the motor M of the cassette deck according to the output signals of the cassette deck selection discriminating unit 3 and the flip-flop 4, and the stop switch SW2 of the cassette deck. And a pause clear unit (7) for clearing the flip-flop (4) according to the output signal of the cassette deck selection discriminating unit (3).