JPS6319960Y2 - - Google Patents

Description

[Detailed description of the invention] This invention uses DC voltage as the control signal in an autofunction system, so that when two or more devices are in operation,
This invention relates to a stop warning display device for an auto-function system, in which the function switches to the last operated device and operates the display means, and the display means of other operating devices flashes as a stop warning.

In general, autofunctions use DC voltage or pulse signals as control signals, but the former does not always enable the device operated last (last one priority). In addition, more complicated operations may be required than manual switching using a function switch. On the other hand, the latter allows last-one priority operation.

In either case, in a system configuration in which a stop signal is not issued from the amplifier side, two or more devices may continue to operate, and the user must manually stop the device, but there is a high risk of forgetting to do so.

This invention was developed in consideration of the above points, and when two or more devices are operating, if the function has not been switched to that device, the display means blinks, and the user is prompted to stop the device. An object of the present invention is to provide a stop warning display device for an autofunction system that can prevent a user from forgetting to stop the system manually by displaying a warning.

Embodiments of the stop warning display device for an autofunction system of this invention will be described below with reference to the drawings.

The figure is a circuit diagram showing the configuration of one embodiment.
T ₁ and T ₂ in the figure are input terminals. The tape count signal TC is input to the input terminal T ₁ , and the phono count signal is input to the input terminal T ₂ .
The PC is now being input. Both the tape count signal TC and the phono count signal PC are active low DC signals.

Input terminal T ₁ is inverter IN ₁ , pulse generator P ₁
to the input terminal _D1 of the latch circuit _L1 . Similarly, input terminal T ₂ is connected to the inverter.
latch circuit L ₂ via IN ₂ and pulsing circuit P ₂
is connected to input terminal D _{2 of} Latch circuit L ₁ ,
Each of _L2 uses a D type flip-flop circuit.

Each output terminal of the above-mentioned pulsing circuits P ₁ and P ₂ is connected to the first and second input terminals of a two-input OR gate OR ₁ , and the output terminal of this OR gate OR ₁ is connected to a latch circuit L ₁ , L _{2 .} are connected to the clock input terminals CK ₁ and CK ₂ .

The output of the output terminal Q ₁ of the latch circuit L ₁ is the output of the switch S ₁
It is designed to control and also to be sent to the first input terminal of a two-input OR gate _OR2 . Output terminal ₁ of latch circuit L ₁ is a resistor
It is connected to the base of transistor Tr ₂ via R ₁ .

Further, the output of the output end _Q2 of the latch circuit _L2 is designed to control the switch _S2 , and
It is adapted to be sent to the first input terminal of the input OR gate _OR3 . The output terminal _Q2 of the latch circuit _L2 is connected to the base of the transistor _Tr6 via a resistor _R2 .

The output terminal of the above inverter IN ₁ is an OR gate OR ₂
The output terminal of the inverter IN ₂ is connected to the second input terminal of the OR gate OR ₃ . The output terminal of this OR gate OR ₂ is connected to the base of a transistor Tr ₄ via a resistor R ₃ , and the output terminal of the OR gate OR ₃ is connected to the base of a transistor Tr ₈ via a resistor R ₄ .

On the other hand, reference numeral 1 is a flip-flop circuit (hereinafter abbreviated as FF), and the output of this FF1 is connected to the base of transistor Tr ₁ via resistor R ₅ , and is connected to the base of transistor Tr 1 via resistor R ₆ . Connected to the base of Tr ₅ .

The emitter of transistor Tr ₁ is a transistor
It is connected to the collector of transistor Tr ₂ , and the collector of transistor Tr ₁ is connected to power supply terminal T ₃ via resistor R ₇ . A voltage of +8V is applied to the power supply terminal _T3 .

The collector of transistor Tr ₁ is connected through a resistor R ₈ to the base of transistor Tr ₃ . The emitter of transistor Tr ₃ is a transistor
It is connected to the collector of Tr ₄ and the transistor
The collector of Tr ₃ is connected to the light-emitting diode D ₁ (used as a display means), the power terminal via the resistor R ₉
Connected to _T3 .

Also, the collector of transistor Tr ₅ is connected to resistor R ₁₀
is connected to the power terminal T ₃ through
It is connected to the base of transistor Tr ₇ through resistor R ₁₁ . The emitter of transistor Tr ₅ is connected to the collector of transistor Tr ₆ .

The emitter of transistor Tr ₇ is a transistor
It is directly connected to the collector of Tr ₈ , and the collector of transistor Tr ₇ is connected to the power supply terminal T ₃ via a light emitting diode D ₂ (used as a display means) and a resistor R ₁₂ .

The emitters of the transistors Tr ₂ , Tr ₄ , Tr ₆ and Tr ₈ are connected to the power supply terminal T ₄ . A voltage of -8V is applied to the power supply terminal _T4 .

On the other hand, T ₅ and T ₆ each indicate an input terminal. Input terminal _T5 is designed to receive a phono signal (playback signal from a record);
The playback signal from the tape is input to _T6 .

The phono signal input to input terminal _T5 is sent to a power amplifier (not shown) via equalizer amplifier 2 and switch _S2 , and the reproduction signal input to input terminal _T6 is sent to a power amplifier (not shown). The signal is sent to this power amplifier via switch _S1 .

Next, the operation of the stop warning display device for the autofunction system of this invention constructed as described above will be explained. Now, when the play switch (not shown) of the tape deck is operated and the tape deck is activated, the tape count signal TC changes from high level (hereinafter referred to as "H") to low level (hereinafter referred to as "H").
(referred to as "L") and is applied to the inverter _IN1 via the input terminal _T1 . By applying this "L" tape count signal TC to the inverter _IN1 , the output of the inverter _IN1 becomes "H".

The output of this inverter IN ₁ is converted into pulses by the pulse generator P ₁ and is then applied to the input terminal D ₁ of the latch circuit L ₁ .
is applied to the clock input terminals CK 1 and CK ₂ of the latch circuits L ₁ and L ₂ through the OR gate OR _{1 .}
A pulse in the positive direction is applied to .

As a result, the output of the output terminal _Q1 of the latch circuit _L1 becomes "H", and the output terminal becomes "L". Since the output of the output terminal _Q1 becomes "H", the switch _S1 (function switch section) is turned on. In other words, the function becomes the tape position.

At the same time, the "H" output of the output terminal _Q1 of the latch circuit _L1 is applied to the base of the transistor _Tr4 through the OR gate _OR2 and the resistor _R3 , thereby turning it on. At this time, the base voltage is applied to the transistor Tr ₃ via the resistors R ₇ and R ₈ , and the transistor Tr ₃ is also in an on-enabled state. Therefore, by turning on the transistor Tr ₄ , the transistor Tr ₃ turns on, and the light emitting diode D ₁ lights up through the transistors Tr ₃ and Tr ₄ .

In this state, when the player's start switch (not shown) is operated to put it into operation, the phono count signal PC is input to the input terminal _T2 as "L", and is inverted by the inverter _IN2. hand,
A phono count signal of "H" appears at its output terminal. This "H" phono count signal PC is pulsed by the pulse generator _P2 and sent to the latch circuit _L2.
is applied to the input terminal D _{2 of} .

At the same time, a positive pulse is applied from the output of the pulsing circuit _P2 to the clock input terminals _CK1 , _CK2 of the latch circuits _L1 , _L2 through the OR gate _OR1 .
At this time, the input terminal _D1 of the latch circuit _L1 is "L"
Therefore, the output terminal _Q1 of the latch circuit _L1 is at "L" and the output terminal ₁ is at "H", so that the switch _S1 is turned off. As a result, the tape is released from its functional state.

In addition, due to the "H" output of the output terminal ₁ of the latch circuit L ₁ , the transistor Tr ₂ is turned on, and FF1
The output of FF1 is applied to the base of transistor Tr ₁ through resistor R ₅ , and this transistor Tr ₁
Due to the output, the light emitting diode D ₁ repeats the on and off state and enters a blinking state. In other words, the display operation of the tape function state is stopped.

On the other hand, since a positive pulse is applied to the input terminal D ₂ and the clock input terminal CK ₂ of the latch circuit L ₂ ,
The output terminal Q ₂ of the latch circuit L ₂ is "H", and the output terminal ₂
is "L", transistor Tr ₆ is off, and transistor Tr ₅ is also off.

Also, the output of the output terminal _Q2 of the latch circuit _L2 is "H".
Therefore, switch _S2 is activated and the function enters the phono state. Then, this "H" output causes the transistor to pass through the OR gate _OR3 .
Tr ₈ is turned on, transistor Tr ₇ is connected to resistor R ₁₀ ,
A base bias is applied via _R11 , transistor _Tr7 is also turned on, and light emitting diode _D2 is turned on. As a result, the function in the phono state is displayed.

Also, the output terminal of inverter IN ₁ , that is, A
The dot remains on unless the tape deck is stopped, and the light emitting diode _D1 continues to blink as the transistor _Tr1 turns on and off (according to the output of FF1).

As described above, according to the stop warning display device of the autofunction system of this invention, when two or more devices are in operation, the function switches to the last operated device, lights up the display means, and Since the indicator light of other operating devices flashes as a stop warning, it is possible to prevent the user from forgetting.

[Brief explanation of the drawing]

The figure is a circuit diagram showing the structure of one embodiment of the stop warning display device for the autofunction system of this invention. Tr ₁ to _{Tr 8} ...transistor, _R1 to _R12 ...resistance, 1...flip-flop circuit, 2...equalizer amplifier, _S1 to _S2 ...switch, _L1 to _L2 ...
...Latch circuit, P ₁ ~ P ₂ ... Pulse circuit, IN ₁ ,
IN ₂ ...Inverter, OR ₁ ~ OR ₃ ...OR gate.

Claims (1)

[Scope of utility model registration request] A plurality of holding means each holding the operating state of the two or more devices and controlling the function switching of the device that last became in the operating state among the two or more devices; and the two or more devices. A lighting display is performed by the output of the holding means corresponding to the device that last became operational among the devices, and a number of display means corresponding to the devices are displayed, and even though the device is in the operational state among the two or more devices, A stop warning display device for an autofunction system, comprising means for blinking the display means corresponding to a device whose function has not been switched.