JPS6055555A - Operation of on-vehicle dad reproducer - Google Patents

Abstract

PURPOSE:To improve the operability of an on-vehicle DAD reproducer by setting a specified waiting time when the reproduction position reaches its end place and stopping the reproduction or performing the repetitive reproduction by deciding whether a disk is ejected within the set waiting time. CONSTITUTION:When an end position is detected by a read-out signal, a timer is first started to produce an alarm like a buzzer, etc. Then an ejection key 28 detects the state of operation. When the operation of the key 28 is decided, a series of end processing is executed. In case the key 28 is not operated, it is decided whether the timer has counted a specified period of time. Then a waiting mode is set if the fixed time does not elapse. When the fixed time elapses, the alarm is stopped and at the same time the timer is reset. Thus the reproduction is restarted from the head music after a specified time.

Description

[Detailed Description of the Invention] Industrial Field of Application This invention relates to a method for operating an in-vehicle (1) A I') (digital audio disc) playback device,
This invention relates to improvements in methods for manipulating the continuation state of J raw motion.

BACKGROUND TECHNOLOGY Generally speaking, in a DAD playback device, a digital IJ! The signal is read optically by an e-big amplifier and converted into an electrical signal, and then subjected to erroneous p detection processing, etc., and then D/A (digital/analog) converted to an analog 4W signal. Then, after the D/A converted signal is amplified by oxygen, it is applied to an electroacoustic transducer such as a speaker to generate an acoustic projector.

These discs are called compact discs, such as A11 or C1, and are stored in appropriate magazines. Its handling is simplified, similar to the previous cassette-type magnetic tape. Furthermore, the information capacity that can be recorded is large, and a large number of songs can be recorded on one disc. Furthermore, since the recording medium is a disk, the function of starting playback from a skipped position, so-called cueing function, has been enhanced. The biggest advantage is that the digital recording method has excellent reproduction characteristics, particularly an excellent signal-to-noise ratio, and extremely high-fidelity sound reproduction.

Because of the advantages described above, the DAD playback device is very promising not only for use as a general fixed stationary device, but also for use as a car-mounted device, a so-called car audio device.

However, in order to make the DAD reproducing apparatus suitable for use in a vehicle, it becomes necessary to solve problems that are different from those of a general fixed stationary type.

What is considered an advantage in a general fixed stationary type may even be a disadvantage when used in a vehicle.

For example, in order to be suitable for in-vehicle use, it is of course necessary to have excellent operability, but this operability must also be compatible with driving operation. Even if a model has excellent operability, this does not necessarily mean that it will be highly operable when mounted on a vehicle.

At least, in order to be suitable for in-vehicle use, it must have high operability in directions that do not interfere with vehicle driving operations.

On the other hand, the song selection functions of DAD playback devices are much more powerful than those of conventional cassette-type magnetic tape playback devices. However, such enhanced functions do not necessarily lead to improved operability for in-vehicle use, and in fact, it may even become cumbersome to operate in order to take advantage of the enhanced functions.

With conventional DAD playback devices, if you try to use them to make the most of their functions, the operation for in-vehicle use is cumbersome. There was a tendency for conflicts to occur, such as the function of the D device not being fully utilized.

In any case, due to the richness of its functions, conventional DAD playback devices tend to require a large number of operating points, which hinders the application of the above-mentioned DAD playback devices to in-vehicle applications. This was one of the major causes.

Purpose of the Invention The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to reduce the number of operating points during normal use, and to improve consistency with the driving operability of the vehicle. To provide a method of operating an in-vehicle DAD reproducing device that can greatly improve the operability while ensuring the functions of the DAD reproducing device and fully utilizing the functions of the DAD reproducing device.

Structure of the Invention In order to achieve the above object, the present invention provides a DAD that reads digital information optically recorded on a disk from an arbitrary recording area, converts it into an electrical signal, and further converts it into an analog signal and reproduces sound. In a method of operating an in-vehicle DAD playback device that includes a playback unit, a control unit that controls the DAD playback unit, and an operation unit, when the playback position of the disc reaches the end position, a timer is activated to set a certain waiting time. If the disc is set and the disc is ejected within the waiting time, playback will be stopped and the disc will be ejected, and if the disc is not ejected during the waiting time, the disc will be ejected from the beginning position. is characterized in that it is repeatedly played.

Embodiments Hereinafter, preferred embodiments of the present invention will be described based on the drawings.

First, FIG. 1 shows an outline of a disc played by a DAD playback device. On the disk 10, digitized acoustic information is optically recorded along high-density spiral tracks. Track tracing is done from the inside to the outside.

A so-called lead-in area (TI) is indexed at the innermost recording area, that is, at the leading position. This includes the catalog number to distinguish the type of disc 10, the total number of songs recorded, the address of the first six songs (indicated by the elapsed time from the beginning), and the total time (total playing time). Information corresponding to the table of contents is recorded. The recording area outside this lead-in area ID is the recording area for music information, the so-called music program area group (T1,
T2, . . . , T j ). Furthermore, a lead-out signal indicating the end of all programs is recorded outside the program area group (Tl to Tj), that is, at the final position.

Here, music information is recorded in each music program area T1, T2, . . . , Tj for each song. Each program area TI, T2, ..., Tj contains music information as well as the song number (track number T).
NO), index number (subdivision within the song), elapsed performance time within the song, elapsed time from the beginning (total elapsed time)
Other information is also recorded.

FIG. 2 shows the configuration of an on-vehicle DA, D playback device to which the present invention is applied.

The apparatus shown in the figure first includes an operation section 12, a power supply section 14, a control section 16, a reproduction section 18, and the like.

The operation unit 12 includes a power switch 20, a display 22, a portion of function keys 24, and a numeric keypad 26 for inputting program data.
etc. are arranged. A disk eject key 28 is disposed on the function key portion 24 . The key 28 constitutes the main operating section, and its position and shape are designed to make it easy to operate frequently.

The power supply unit 14 is powered by the on-vehicle battery.
After converting the power supplied through 0 to the required voltage and performing necessary stabilization processing, each part 12.16.1
Distribute to 8. The ON-OFF status of this power supply section 14 is as follows.
Operation of the power switch 2° of the operation unit 12 or control unit 1
This is done under control from 6. In addition, this power supply section 14 includes, for example, an ItA in the control section 16.
To ensure that the memory contents of M (random access memory) are not lost, turn the power ON-OIi'
It also has the function of a so-called memory bank up power supply, which always supplies power regardless of the current status.

Although detailed internal illustrations are omitted, the control unit 16 includes a microcomputer, which is a general-purpose information processing means, and each unit 12.
．． 14 and 18, and includes an interface for exchanging control signals, detection signals, and the like. A microcomputer is composed of a microprocessor, a ROM (read-only storage device) that stores processing procedures (programs) for the microprocessor, and R, AM, etc. that provide a work area for the microprocessor. be done. These components can be collectively formed into one integrated circuit as a so-called single-chip microcomputer. The operation sequence of the control unit 16 is mainly set by program information stored in the ROM. The specific contents will be described later.

The playback section 18 is a main part of the A/D playback device, and includes a disk drive mechanism, a big amplifier, a head amplifier, an audio power amplifier section for sound reproduction, a mechanism control section, and the like.

Next, FIG. 3 shows an example of the operation sequence of the control section 16.

In FIG. 3, first, it is determined whether the disk has been loaded (Sl).

If the disc is not loaded (N), a closed loop process repeats the same decision again and waits for the disc to be loaded. In this case, the disk is loaded by manually inserting the disk into the disk insertion slot of the playback section 18. Further, in conjunction with the loading of this disc, the power (main power) is turned on, and a play operation is started.

When the disk is inserted, that is, it is loaded (Y
), the power is automatically turned on, and the inserted disc is automatically drawn into the playback section 18 and set in the reading mechanism section. First, the recorded contents of the lead-in area ID are read out, and then the playback position is moved to the playback start position of the first song (S2).

Then, playback (Play) is executed (S3).

Once the reproduction is executed, it is detected whether the reproduction position has reached the end position (S4). This detection is performed based on the readout signal.

If the end position is not detected here (N), the process advances to the next routine S5. Also, if the end position is detected (Y),
The routine branches to routine S7.

In routine S5, it is detected whether the ejection key 28 is being operated.

At this time, if the ejection key is operated (g), the process advances to routine S6. So, turn off the alarm, reset the timer, stop playback, eject the disc, and turn off the power.
A series of termination processes such as (off) are executed. and,
Return to the first routine S1.

Furthermore, if the ejection key is not operated (N), the process returns to routine S3 to continue regeneration.

Here, in the routine S4, if the end position is detected (Y), that is, if the reproduction of all songs has been completed -, the routine S7 and subsequent steps are executed.

In routine S7, first, a timer is started (activated).

Next, an audible display means such as a buzzer is activated to generate an alarm (S8).

Next, it is detected whether or not the ejection key 28 has been operated (89).

Here, if the eject key is operated (Y), the process moves to the above routine S6, stops playback, ejects the disc, and turns off the power.
A series of termination processes such as FF (off) are executed.

Furthermore, if the ejection key is not operated (N), it is determined whether the above-mentioned timer has counted the entire fixed period of time (8).
10). Finally, it is detected whether a certain period of time has elapsed since the playback position reached the end position.

Here, if the predetermined time has not elapsed (N), the process returns to routine S8 and enters a standby state in which it waits for the ejection key to be operated for a predetermined time.

When the count value of the timer reaches a predetermined value after a certain period of time has passed (Y), the alarm is stopped and the timer is reset (811), and the process returns to routine S2. As a result, the playback operation is resumed after a certain waiting time, and the song is played again from the beginning.

In other words, the same disc is played again.

As described above, when the playback position of the disc reaches the end position, a timer is activated to set a certain waiting time, and if the disc is ejected within that waiting time, playback is stopped and Execute the disc eject operation,
Furthermore, if the ejection operation is not performed during the waiting time, reproduction from the beginning position is repeated. As a result, for example during long drives,
When all the songs recorded on a disc have finished playing and you want to start playing the disc again from the beginning, you can leave it as is without performing any operations without performing the operation procedure to start playback again (Takede). This allows the playback to be repeated from the beginning.In addition, if you want to stop the playback operation completely and collect the disc after all the songs have finished playing, you can repeat the playback from the beginning. The regeneration operation can be ended by executing the I+2 routine S6 by simply operating the eject key (or at the time of the operation) by operating the eject key at will.

In the manner described above, it is possible to arbitrarily control either the continuation or termination of reproduction. Moreover, this operation can be performed by an extremely simple procedure of operating the ejection key or not. As a result, the ejection key 28 can be used alone for most of the operations in normal use.

In addition, good operability that also ensures consistency with the driving operation of the vehicle can be obtained. Furthermore, by audibly displaying the standby time as indicated in (-), there is no fear of missing the opportunity for the operation described in (-), and it is also possible to notify that the playback of all songs has been completed.

On the other hand, if there is no operation after all the songs are completed, it is possible to eject all the timing discs for a certain period of time.

As described above, the operating method of the in-vehicle 1) AI) playback device according to the present invention can reduce the number of operating points during normal use, further simplifying the fewer operations, and this Accordingly, while maintaining consistency with the driving operability of the vehicle and fully utilizing the functions of the AD reproducing device, the overall operability can be greatly improved.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an outline of a disc played by an in-vehicle I) AD playback device according to the present invention, and FIG. 2 shows an example of the configuration of the in-vehicle I) AD playback device according to the invention. FIG. 3 is a flowchart showing an embodiment of the operation sequence in the control section of the in-vehicle DAI) playback device according to the present invention. DESCRIPTION OF SYMBOLS 10... Disc, 12... Operation unit, 14... Power supply unit, 16... Control unit, 18... Playback unit, 20... Power switch, 22... Display unit, 24... ...Some function keys, 26--Numeric keypad, 28--Eject key, II)...Lead-in area, T1-Tj...Program area (motor information storage area). Agent Patent attorney Yoshi 1) Senji (1 other person) 1st stock Eichi 2T” = 315-No10

Claims (1)

[Claims] (1) A playback section that converts digital information optically recorded on a disk from an arbitrary recording area into an electrical signal, and then converts it into an analog signal and reproduces sound. A I) In-vehicle device equipped with a control unit and an operation unit for controlling the playback unit], + A, I) In the operating method of the playback device, when the disc home position reaches the end position, the timer is activated. A certain period of time is set, and if a disc ejection operation is performed within that period of time, playback is stopped and the disk is ejected, and if the above-mentioned ejection 111 operation is performed during that period of time. If not, playback from the beginning position 'f: Repeatedly. (2. In-vehicle use according to claim (r), characterized in that the standby time is displayed audibly]) A method for operating an AD playback device.