JPH038190A - On-vehicle stereo equipment - Google Patents

Abstract

PURPOSE:To improve the operability by storing a program number being in the course of sound recording, when a power source is turned off. CONSTITUTION:When an engine stops when a DAT2 is bringing a reproducing melody of a CD player 1 to sound recording, an ignition key switch 6 is separated from an ACC terminal in order to restart the engine and becomes a state brought into contact with an ST terminal and an IG terminal, and a power source of a stereo equipment 4 is turned off. A system controller 3 reads out and stores a program number PN of a reproducing melody and a sound recording melody by an OFF detecting signal from a power supply voltage detecting circuit 7. When the switch 6 is returned to the IG terminal and the power source is supplied to the equipment 4 from a battery 5 through the AGC terminal, the circuit 7 sends a power source ON detecting signal to the controller 3. The controller 3 reads out the stored PN, executes program searching of the reproducing melody of the player 1, and executes program searching of the sound recording melody of the DAT 2. In such a way, consecutive sound recording can be executed over again exactly from a melody head position of the melidy whose sound recording is interrupted, and the operability can be improved.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an in-vehicle stereo device that incorporates a recorder and a playback device so that the song being played back by the playback device can be recorded by the recorder. [Prior art] In-vehicle stereo equipment, so-called car stereos,
T (digital audio tape recorder), C
Various recording and reproducing devices such as a D player and a cassette player (including those with a recording function) are integrated.

By the way, in a car, when the starter for starting the engine is turned on, other electrical equipment other than the engine is forcibly turned off in order to reduce the burden on the battery and improve engine startability. It's normal. For this reason, for example, in a car stereo device that incorporates a DAT and a CD player, if the power is turned off while the DAT is recording a song played by the CD player, the CD player and DAT will be turned off. At the same time, it stopped on the spot.

[Problem to be solved by the invention]

If the power is turned off during recording as described above, after the power is turned on again, manually search for the beginning of the playback song whose playback was interrupted and the beginning of the recorded song whose recording was interrupted and record the concatenation. There was a problem in that the operation was troublesome and time-consuming, as it required either sipping or recording from the beginning.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an in-vehicle stereo device that is capable of accurately repeating the beginning of the song that was being played when the power was turned off when the power is turned on again. purpose.

[Means to solve the problem]

In order to achieve the above object, the in-vehicle stereo device of the present invention is an in-vehicle stereo device that integrates a digital playback device and a digital recorder so that songs played by the digital playback device can be recorded by the digital recorder. In a stereo device for a car, power supply voltage detection means monitors the state of power supply from an in-vehicle battery to the stereo device, and when power off to the stereo device is detected during recording of a playback song, a digital signal at the time of power off is provided. program number memory means for reading and storing the program number of the music played by the digital playback device and the program number of the music recorded by the digital recorder; and control means for automatically returning to the beginning position of each stored program number.

In addition, in the case of a car stereo system that incorporates a digital playback device and an analog recording device, the analog recording device can detect the silent position using rewind search to reach the beginning of the recorded song when the power is turned off. I set it back automatically.

In addition, in the case of a car stereo system that incorporates an analog playback device and a digital recorder, the analog playback device uses a rewind search to detect the silent position to the beginning of the song being played when the power is turned off. I set it back automatically.

[For production]

When the power of the in-vehicle stereo device is turned off by turning on the starter or the like while recording a playback song, the power supply voltage detection means detects this power off and sends a detection signal to the program number memory means.

In the case of a car stereo system that incorporates a digital playback device and a digital recorder, the program number memory means stores the program number of the song being played by the digital playback device and the number of songs recorded by the digital recorder. The program numbers are read out and stored.

Then, when the power of the in-vehicle stereo device is turned on again after starting the engine is completed, the control means controls the start position of the playback song and the recorded song of each program number stored in the program number memory means. Return the digital playback and recorder to their original state. Therefore, it is possible to accurately continue recording again from the beginning of the playback song whose recording was interrupted.

Note that if either the playback device or the recorder is an analog device such as a cassette player, it does not have TOC information such as a program number like a DAT or CD player. By detecting the silent position of the previous song, the beginning of the playback or recorded song when the power is turned off may be performed.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a first embodiment of an in-vehicle stereo system according to the present invention. This embodiment uses a DAT (digital recorder) as a recorder and a CD player (as a playback device).
This is an example of a case where a digital playback device is adopted and all operations from finding the beginning of a song whose recording was interrupted to starting re-recording are performed automatically.

In the figure, 1 is a CD player, 2 is a DAT, 3 is a system controller, 4 is an in-vehicle stereo system made up of these devices, 5 is an in-vehicle battery, 6 is an ignition key switch on the driver's seat, and 7 is an in-vehicle device. This is a power supply voltage detection circuit that monitors the state of power supply to the stereo device 4. Note that the ignition key switch 6 is
F, ACC (accessories), IG (engine running)
, ST (starter) terminals, and power is supplied from the battery 5 to the in-vehicle stereo device 4 through the ACC terminal only when the switch 6 is set to the ACC terminal or the IG terminal. ing.

Next, the operation of the above embodiment will be explained with reference to the flowchart of FIG. 2 and the time chart of FIG. 3. Note that the processing operations specific to the present invention described in the operation description below are realized in software by the system controller 3 having a built-in microcomputer.

It is now assumed that the engine has been started by the starter and the ignition key switch 6 is set to the IG terminal position as shown in FIG.

In this state, power is being supplied from the battery 5 to the in-vehicle stereo device 4 through the ACC terminal, and the in-vehicle stereo device 4 is in a usable state.

In the above state, it is assumed that a desired disc is loaded into the CD player 1, the songs are played in order starting from program number P No. 1, and the played songs are being recorded in order on the DAT 2 ( Step St). The power supply voltage detection circuit 7 constantly monitors the state of power supply from the battery 5 at this time (step S2).

Now, as shown in Figure 3, CD player 1 is playing the song with program number P No. 5.
If the car engine stops (so-called engine stall) while this playback song is being recorded on the DAT2, the driver must move the ignition key switch 6 from the IG terminal position to the ST position.
Turn it to the terminal position, apply the starter and restart the engine. Therefore, this key operation causes the ignition key switch 6 to move away from the ACC terminal, and connect the ST terminal and I
It comes into contact with the G terminal, and at this point the power of the vehicle stereo device 4 is forcibly turned off. The power supply voltage detection circuit 7 detects this power off and sends a detection signal to the /stem controller 3 (step S2).

When the system controller 3 receives the detection signal,
The program number P No. 5 of the currently played song and the program number P No. 5 of the recorded song are respectively read from the CD player 1 and DAT 2 and stored in the internal RAM (step S3).

On the other hand, the CD players 1 and DAT2 are released from the playback and recording modes, respectively, due to the above-mentioned power-off, and stop operating at that point (step S4>).

When the engine is restarted and the ignition key switch 6 is returned to the rG terminal position, power is again supplied from the battery 5 to the in-vehicle stereo device 4 through the ACC terminal. The power supply voltage detection circuit 7 detects this power-on (step S5) and sends a detection signal to the system controller 3.

The system controller 3 receives the detection signal, and the RA
The program number P No. 5 of the playback song of the CD player 1 stored in the CD player 1 is read out, and the CD7'' layer 1 is controlled to locate the beginning of the playback song with the program number PNo. 5 (steps S6, 7). , put CD7' layer 1 on standby (step S8).Next,
Reads the program number pNo, -5 of the recorded song of DAT2 stored in RAM, controls DAT2, rewinds the recording tape to the beginning of the song with program number P No, 5, and returns program number P No. 5. (steps S9 and 10).

The beginning of the CD player 1 and DAT 2 is searched as described above, and when the beginnings of the songs on both are aligned, the system controller 3 automatically starts the playback operation of the CD player 1, and starts playing songs from program number PNo. 5. Start playing. Furthermore, at the same time, the DAT 2 automatically starts the recording operation and resumes recording of the song with program number P No. 5 played by the CD player 1 (step S1).

Therefore, continuous recording is automatically performed from the beginning of the song being played at the time the power is turned off.

In the above explanation, in order to simplify the explanation, if the program number of the playback song and the program number of the recorded song match, that is, the DAT As described above, a CD player can randomly play a playback song, while a DAT can uniquely assign a block number to a recorded song.

Therefore, it is natural that the two program numbers may not match.

The above embodiment uses digital C as a player and a recorder.
Although we have shown an example in which a D player and a DAT are used, a digital CD player (or DA
T), an analog cassette player (provided it has a recording function) can also be used as the recorder. A flowchart of the operation in this case is shown in FIG.

Generally, analog cassette players do not have TOC information such as program numbers, unlike digital CD players and DATs. Therefore, in this case, in step 33', only the program number of the song played by the CD player (or DAT), which is a digital player, is read and stored, and for the cassette player, which is an analog player, step S9' In this system, a rewind search is used to detect the unrecorded position of the previous song, and to find the beginning of the recorded song when the power is turned off. Thereby, even when using an analog recorder that does not have TOC information, the same implementation can be achieved. Note that the other step operations are the same as in FIG. 2.

Furthermore, an analog cassette player can be used as the playback device, and a digital DAT can be used as the recorder. A flowchart of the operation in this case is shown in FIG.

In this case, in step 33'', only the program number of the recorded song on the DAT, which is a digital recorder, is read out and stored, and in the case of a cassette player, which is an analog playback device, in step S6'', the program number of the recorded song is read out and stored. By searching, the unrecorded position of the previous song is detected, the beginning of the playback song is found when the power is turned off, and the case note player is turned on (step 38''). Thereby, even when using an analog playback device that does not have TOC information, the same implementation can be achieved. Note that the other step operations are the same as in FIG. 2.

〔Effect of the invention〕

As is clear from the above, when the present invention is used, when the power to the stereo device is turned off during the recording of a playback song, the program number at that time is read out for digital playback and recorders. By storing the program, the program number automatically returns to the beginning position of the memorized program number when the power is turned on again.On the other hand, analog playback and recorders can be rewinded when the power is turned on again. - By detecting the silent position of the previous song through search, the beginning of the song is automatically performed, so the playback and recorder automatically move to the beginning of the song being played and recorded when the power is turned off. It is now possible to resume recording from the beginning of the song where recording was interrupted after the power is turned on again, further improving the repeatability of this type of in-vehicle stereo system. obtain.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of the first embodiment of the present invention, Fig. 2 is a flow chart of the operation of the above embodiment, Fig. 3 is a time chart of the operation of the above embodiment, and Fig. 4 is a diagram of the operation of the above embodiment. Flowchart of the operation of the second embodiment. FIG. 5 is a flowchart of the operation of the third embodiment of the present invention. 1...CD player (digital player), 2-
...DAT (digital recorder), 3...system controller, 4...car stereo device, 5...
- Battery, 6... Ignition key switch, 7... Power supply voltage detection circuit. Figure 1 Figure 2 Figure 3 Figure 4

Claims (3)

[Claims] (1) In an in-vehicle stereo device that incorporates a digital playback device and a digital recorder so that the songs played by the digital playback device can be recorded on the digital recorder, the stereo device is not connected to the in-vehicle battery. A power supply voltage detection means for monitoring the power supply state, and when power off to the stereo device is detected during recording of a playback song, a program number of the playback song of the digital playback device and the digital recorder when the power is turned off. a program number memory means for reading out and storing the program number of the recorded song; and a program number memory means for automatically moving the digital playback device and the recorder to the beginning position of the program number stored above when the power of the stereo device is turned on again. An in-vehicle stereo device characterized by comprising: means for controlling to return to the original position. (2) In an in-vehicle stereo device that incorporates a digital playback device and an analog recorder so that songs played by the digital playback device can be recorded by the analog recorder, the stereo device is connected to the in-vehicle battery. A power supply voltage detection means for monitoring the power supply state, and when power off to the stereo device is detected during recording of a playback song, reads and stores the program number of the playback song of the digital playback device at the time of power off. program number memory means;
When the power to the stereo device is turned on again, the digital playback device automatically returns to the beginning position of the program number stored above, and the analog recorder detects the silent position using rewind search to record when the power is turned off. An in-vehicle stereo device characterized by comprising means for automatically returning to the beginning position of a song. (3) In an in-vehicle stereo device that incorporates an analog playback device and a digital recorder so that songs played by the analog playback device can be recorded on the digital recorder, the stereo device is connected to the in-vehicle battery. A power supply voltage detection means for monitoring the power supply state, and when power off to the stereo device is detected during recording of a playback song, reads and stores the program number of the recorded song of the digital recorder at the time of the power off. program number memory means;
When the power to the stereo device is turned on again, the digital recorder is automatically returned to the beginning position of the program number stored above, and the analog playback device detects the silent position using rewind search to resume playback when the power is turned off. An in-vehicle stereo device characterized by comprising means for automatically returning to the beginning position of a song.