JPH0725914Y2 - Car audio system - Google Patents

Description

[Detailed Description of the Invention] [Outline] In a vehicle audio device of a deck priority type for exclusively operating a radio receiver and a cassette deck, when the deck is set to a silent operation mode such as fast-forward, the radio receiver is turned on. It is operated to avoid the silence in the passenger compartment, and when the deck completes the silent operation, the deck is placed in the standby mode to continue the operation of the radio receiver to avoid an unintended interruption of radio broadcasting. .

[Industrial application field]

The present invention relates to an on-vehicle audio device for exclusively operating a radio receiver and a cassette deck.

[Prior Art] The car audio equipment is equipped with a radio receiver as standard equipment, and when a cassette deck is added to this, the power of the radio receiver is automatically turned off simply by inserting a cassette tape into the deck. At the same time, it is general to use a deck priority type for starting the reproduction of the tape.

[Problems to be solved by the device]

When the cassette deck is set to the silent operation mode such as fast forward (FF) or rewind (REW) with the above-mentioned deck priority type on-vehicle audio device, not only the tape is not played during that time, but also the radio receiver is stopped. As a result, the vehicle interior is silent for several tens of seconds.

In order to avoid such a silent state, there is a method of automatically restarting the operation of the radio receiver when the deck enters the silent operation mode.

However, this method stops the operation of the radio receiver again and returns the deck to the play mode when the deck completes the silent operation, so that even if the listener is interested in the contents of the radio broadcast, the continuation is listened to. There is a drawback that you can not do it.

The present invention provides the tape deck with a standby mode (a state in which the operation is suspended while the cassette tape is accommodated).
It is intended to continue the operation of the radio receiver even when the deck completes the silent operation.

[Means for Solving the Problems]

According to the present invention, when the cassette pack is inserted into the cassette deck (CS) while the radio receiver (AR) is operating, the power of the radio receiver (AR) is turned off and the deck (CS) is set to the reproduction mode ( In the on-vehicle audio device to be set to PLAY), when it is detected that the deck (CS) is in the silent operation mode (FF, REW, APS, etc.), the radio receiver (AR) is turned on. When the control means and the deck (CS) detect that the operation in the silent operation mode has been completed, the deck (CS) is kept in the standby mode (STB) with the radio receiver (AR) powered on. When the second control means for switching the reproduction switch (SW7) is operated and the deck (CS) is switched from the standby mode (STB) to the reproduction mode (PLAY), the radio receiver (AR) ) And a third control means for turning off the power It is characterized by the fact that it becomes

[Action]

If the cassette deck is provided with a standby mode, it is possible to go through the standby mode without directly switching from the silent operation mode to the playback mode. By operating the radio receiver in this standby mode, unintentional interruption of radio broadcasting can be avoided. Since the standby mode can be switched to the reproduction mode by a switch operation, the reproduction of the tape can be started by the listener's judgment.

〔Example〕

The figure is a block diagram showing an embodiment of the present invention. AR is a radio receiver, CS is a cassette deck, MPU is a control unit of the microprocessor (or microcomputer), SW1.
Switches to the CS side when the cassette pack is inserted and to the AR side when ejected, SW2 is FF, REW, RPT (repeat), AP
SW3 to SW6 are RPT switches that are set in advance to switch to playback mode (PLAY) or standby mode (STB) of the present invention at the completion of each silent operation of 3 (cue) , APS, FF, REW each switch for instructing silent operation, and SW7 is a switch for instructing transition from the standby mode (STB) to the playback mode (PLAY).

The standby mode (STB) is in the pack insertion state where the switch SW1 is connected to the CS side, that is, the playback mode (PLA
Since the power of the radio receiver AR is turned on in the state where it can move to Y), the relay RL and driver transistor for that
There is a Tr.

F1 to F5 are state storages such as flags or buffers, F1 is a flag for turning on and off the transistor Tr, F2 is a flag for setting and releasing the standby mode, and F3 is FF.
A flag that is set when / REW is automatically stopped (A ・ STOP) at the tape end or the beginning of the track, and F4 is when FF / REW is manually stopped (M ・ STOP) by a stop switch (not shown).
Or set when PLAY switch SW7 is pressed, A
Flag that outputs R OFF output and STB OFF output, F5 is REW (RPT)
This is a flag that is set when is started.

G1 turns on RTP starter SW3 and then actually flags
AND gate that outputs AR ON output and clears flag F1 when F5 is set, G2 is an OR gate that outputs AR ON output immediately when any of APS switch SW4, FF switch SW5, REW switch SW6 is turned on, G3 is This is an AND gate that outputs STB ON output when the APS switch SW4 is turned on and the flag F3 is set.

From the radio receiver AR to the cassette deck CS, a signal Po indicating that the accessory power supply Acc and the power switch on the radio side are on
n is transmitted, and conversely, relay RL from deck CS to receiver AR
Alternatively, the actual operating power supply Acc ′ is returned via the switch SW1. H1 is a P-on discriminating unit, which gives a signal indicating that STB operation is possible to the MPU, and a signal indicating STB non-operation if there is no. STB non-operation is a control signal that prohibits the setting of standby mode STB.This is input when the power of the receiver AR is off and there is no need for it, and when the switch SW2 is set to the PLAY side and the standby mode STB is not set. .

On the other hand, if STB operation enabled is input, the flag F2 can be set. This is when the receiver AR is powered on and switch SW2
Is when connected to the STB side.

The operation will be described. If the cassette pack is inserted while the power of the receiver AR side is on, the switch SW1 switches from the AR side to the CS side, so the power source Acc 'of the receiver AR is turned off and the deck CS is in the playback mode ( PLAY).

When one of the switches SW3 to SW6 is turned on in the middle of the reproduction mode, the silent operation mode is set, and the flag F1 is set by the output of the gate G1 or G2. As a result, the transistor
While the Tr is turned on and the power supply Acc 'of the receiver AR is turned off, and the playback of the deck CS is suspended, radio broadcasting can be listened to.

After this, when flag F2 is set at the output of gate G3,
Although the deck CS is in the standby mode, the flag F1 remains set, so that the receiver AR continues to operate.

When the PLAY switch SW7 is turned on in this state, the flag F4
Is set, so flags F1 and F2 are cleared, and deck C
S returns to the play mode PLAY.

[Effect of device]

As described above, according to the present invention, in the in-vehicle audio device in which the radio receiver and the cassette deck are combined, the power of the receiver is turned on when the deck is in the silent operation mode while the deck is given priority in principle. In order to avoid silence in the passenger compartment, and when the deck has completed silent operation, the standby mode is set to continue operation of the receiver, which has the advantage of avoiding unintended interruption of broadcasting. is there.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention. In the figure, AR is a radio receiver, CS is a cassette deck, MPU is a microprocessor, F2 is a standby mode setting flag, and SW7 is a PLAY switch.

Claims (1)

[Scope of utility model registration request] 1. When a cassette pack is inserted into a cassette deck (CS) while the radio receiver (AR) is in operation, the radio receiver (AR) is turned off and the deck (CS) is turned off.
When the deck (CS) detects that the deck (CS) is in the silent operation mode (FF, REW, APS, etc.), the radio receiver (AR) is turned on. When the deck (CS) detects that the deck (CS) has completed the operation in the silent operation mode, the radio receiver (AR) is turned on and the deck (CS) is kept in standby. When the second control means for setting the mode (STB) and the operation of the reproduction switch (SW7) are detected, the deck (CS) is shifted from the standby mode (STB) to the reproduction mode (PLAY) and the radio Receiver (AR)
And a third control means for turning off the power of the vehicle.