JP3287796B2 - Optical disk storage device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an optical disk storage device, and more particularly to an optical disk storage device used as an additional memory of a personal computer.

[0002]

2. Description of the Related Art Generally, a personal computer is provided with a function for freely setting an additional memory or an interface at the request of a user. In particular, a configuration in which these can be used by mounting them in the form of a mounting card inside a computer main body. It has been. Conventionally, a ROM (read only memory) is often used as a storage element in a card for an additional memory.

[0003] On the other hand, a method of installing a CD (compact disk) as a storage device outside a computer main body instead of a mounting card is conventionally known. This is R
Since the storage capacity of the CD is larger than the storage capacity of the OM, the CD is used not as music data but as a storage device for digital data for information processing. Further, a storage device using a hard disk is also provided. A storage device (hard disk device) using this hard disk is configured to be directly mountable in an expansion slot provided in a computer main body. This hard disk has a characteristic that it has a large storage capacity for a ROM but a small storage capacity for a CD.

[0004]

However, when a mounting card on which the above-mentioned ROM is mounted is used as a storage element, the ROM has a relatively small storage capacity, so that it is not suitable for a large amount of information processing. There was a problem that was appropriate.
Further, in the conventional example in which the CD device is installed outside the computer main body, since the CD is installed outside, there is a problem that the shape of the whole system becomes large and a large space is required.

[0005] In recent years, computers have become more multifunctional, but a CD externally attached to a conventional computer has been developed.
The device focuses solely on the function as an external device of the computer, and thus has a problem that an audio CD cannot be reproduced by a CD device. Furthermore, when a hard disk device is used, the hard disk device can be mounted in the computer main body, which is advantageous for downsizing the system. However, the hard disk stored in the hard disk device is firmly fixed to the spindle. . Specifically, the hard disk is fixed to the spindle by screwing. Therefore, the hard disk device has a problem that the hard disk cannot be easily attached and detached.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide an optical disk storage device which enables a large amount of information processing and can be downsized and multifunctional in a device to be mounted. I do.

[0007]

Means for Solving the Problems In order to solve the above problems, the present invention is characterized by taking the following means. That is, a mechanical control circuit, a data demodulation circuit, a system control circuit, a data output unit,
A circuit board provided with an audio circuit and an audio output terminal; and an optical disk storage device body provided integrally with the circuit board and performing reproduction processing on a mounted optical disk using a pickup and a pickup moving mechanism. comprising the door, there is provided an optical disk storage device incorporated detachably in the electronic device body, the optical disk storage device main body, the table and the table that the optical disk is mounted, the optical disk by the force of the magnet And a clamper for clamping the optical disc to the table by being clamped between
The disk storage device, wherein the circuit board is separated.
And a first substrate and a second substrate connected by wiring
And the first substrate is at least
Also equipped with mechanical control circuit and data demodulation circuit
And the second substrate has at least the audio
Part of the circuit and audio output terminals
It is characterized by the following.

The above arrangement operates as follows. An optical disk generally has a larger storage capacity than a ROM, and therefore can process a greater amount of information than a conventional mounting card provided with a ROM. In addition, since the optical disk is provided inside the electronic device main body, the shape of the entire system can be made smaller than when the optical disk is installed outside the electronic device main body.

Further, since the audio circuit, and the audio output terminal are provided, it is possible to perform playback of audio CD, Ru can be made multi-functionality of electronic apparatus incorporating a disc storage device.

[0010]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic perspective view of an optical disk storage device according to one embodiment of the present invention. In the figure, 1 is a circuit board (hereinafter, the card that body), the optical disk (e.g. CD) apparatus main body 2, IC package 3 _1, such as a processor or control circuit, 3 _2, etc. is mounted on its surface. As shown in FIG. 2, the card body 1 is inserted into a card mounting guide 5 provided in the personal computer body 4.

FIG. 3 is a detailed configuration diagram of the card shown in FIG. 1, and FIG. 4 is a detailed configuration diagram showing the inside of the CD device main body 2 in FIG. The main body 6 of the CD device 2 is fixed to the card main body 1 by screws, and the main body 6 is fixed by a pickup 10 on a carriage 9 that moves between a worm (feed screw) 7 provided on the chassis 6 and a support shaft 8. For example, digital data recorded on a CD 11 having a diameter of 3 inches to 5 inches is read.

The CD 11 is a direct drive motor 12
The worm 7 is rotated by the feed motor 13. In this case, the worm 7 is composed of, for example, a double thread, and therefore, the feed amount of the carriage 9 per rotation is larger than that of the single thread. Therefore, CD1
When the access 1 is performed, the moving speed of the carriage 9 can be increased and the access time can be reduced as compared with the case where a single thread is used for the worm 7.

FIG. 5 is a plan view near the direct drive motor, and FIG. 6 is a detailed plan view near the direct drive motor. The direct drive motor 12 is shown in FIG.
As shown in FIG. 3A, the motor board 30 is formed integrally with the motor board 30, and the motor board 30 is fixed to the main chassis 6 (FIG. 1) with screws or the like. The motor board 30 has a detection switch 31 for detecting the innermost peripheral position of the pickup 10 on the carriage 9 (FIG. 1) with respect to the CD 11 (FIG. 1), and a printed wiring for extracting a signal from the detection switch 31 to the outside. A pattern 32 is provided.

When the pickup 10 faces the innermost peripheral position of the CD 11, the innermost peripheral position is detected by the protrusion 9'a provided on the pickup substrate 9 'pushing the actuator 31a of the detection switch 31. You. In this case, as shown in FIG. 3B, a detection switch 33 is provided outside the motor board 34 and a signal lead 35 for taking out a signal from the detection switch 33 to the outside is provided.
Space can be saved because the lead wire 35 does not need to be routed, and work for mounting the lead wire 35 is not required.

A cover 14 is made of, for example, a transparent epoxy resin, and is fitted and fixed on the chassis 6 so as to cover the entire CD apparatus main body 2. Reference numeral 15 denotes a clamper which is formed of, for example, a magnetic material, and has a hole 14a formed in the cover 14 as shown in FIG.
Are inserted at predetermined intervals, and are rotatably supported here.

The clamper 15 is provided above the direct drive motor 12, is fixed thereto by a magnet 17 provided on a table 16 on which the CD 11 is mounted, and holds the CD 11 together with the table 16. , And can be rotated integrally therewith. Thus, the magnetic force generated by the magnet 17
Fix CD 11 between clamper 15 and table 16
Structure.

[0017]

The cover 14 has a function of preventing dust from adhering to the recording surface of the CD 11 and the pickup 10. As a result, there is no adverse effect on signal reproduction, no dust adheres to mechanisms such as the worm 7, the shaft 8, the carriage 9, and the movement of the carriage 9 is not hindered. Further, the CD 11 can be fixed to the table 16 by the clamper 15, and the CD 11 can be prevented from coming off the table 11 due to centrifugal force.

In this case, since the clamper 15 is provided on the cover 14, the CD 11 can be fixed to the table 16 simply by attaching the cover 14 to the chassis 6. In addition to attaching the cover 14 to the chassis 6, the clamper 15 CD1
No troublesome operation such as fixing to 1 is required. The card body 1 includes a CD circuit board 18 and a system control circuit board 19, both of which are supporting members 20.
Are mechanically linked together to form a single card. The CD device main body 2, a mechanical control circuit and the IC package 3 ₁ Other such data demodulation processor is mounted on a CD circuit board 18, the IC package 3 ₂ Other systems such as the system control circuit, an error correction processor It is mounted on a control circuit board 19.

Since the two circuit boards 18 and 19 are electrically connected by the jumper wire 21, the two circuit boards 18 and 19 can be separated by removing the jumper wire 21 and the supporting member 20, so that they can be separated from each other. can do. Therefore, CD
An apparatus main body 2 and the CD circuit board 18 made of the IC package 3 ₁ other electrical circuits, IC package 3 ₂ other can test a system control circuit board 19 each separately formed of an electric circuit, for example, are connected by a jumper wire or the like Each can be evaluated separately compared to the case where they are connected by a printed wiring pattern and configured as a single circuit board,
Failure analysis and failure location discovery are easy.

As described above, according to the present invention, since the CD device main body 2 is installed as a storage device in the card main body 1, a larger amount of information can be processed as compared with a conventional mounting card provided with a ROM. Further, since the CD device main body 2 is integrally mounted on the card main body 1, the shape of the whole system can be reduced as compared with the conventional method in which the CD is installed outside the computer main body 4, and the mounting space is small. I'm done.

Reference numeral 22 denotes an expansion connector socket which is provided on the system control circuit board 19,
8 has the same function as the jumper wire 21 connected to the jumper 8. For example, as shown in FIG. 8, the mounting card 1 having the configuration shown in FIG.
3 _1, different from the CD circuit board 18 of the mounting card 1 23 ₂ CD circuit board 24 _1, 24 ₂ respectively fitted to connecting them.

For connection, the system control circuit board 1
9 expansion connector socket 22 and CD circuit board 2
4 connect _1, 24 ₂ and the jumper wire at a suitable wire. In this embodiment, since one mounting card is configured to be separated into a CD circuit board and a system control circuit board,
As shown in FIG. 8, for example, three CD devices in which different pieces of information are recorded can be used, and a large amount of information can be processed by one computer main body 4, so that the cost can be reduced.

Reference numeral 25 denotes an audio circuit module, which is substantially constituted by a DA converter. Reference numeral 26 denotes an audio output jack, which are provided on the system control circuit board 19. This is used for a CD mounted on the CD device main body 2 in which music data is recorded, not digital data for information processing.

FIG. 9 shows a block diagram of a mounting card according to the present invention. In the same figure, the pickup 1 from the CD 11
The signal reproduced by 0 is amplified by the RF amplifier 40, and the digital information signal is used by the processor 41 as a data buffer for demodulation and primary error correction.
When a predetermined number of bytes of data are stored, they are read out from this and supplied to the processor 43, where secondary error correction and the like are performed.

The RAM 44 is used as a buffer for secondary error correction, and stores data after the completion of error correction. The data stored in the RAM 44 is taken out through the edge connector, transferred to the host computer 50 of the computer main body 4, and subjected to a predetermined process.
In this case, the signal processing control by the processor 41 is performed by a CPU.
The signal processing control by the processor 43 is performed by a system control circuit 46 configured by a CPU.

On the other hand, the tracking error signal and the focus error signal amplified by the RF amplifier 40 are converted into respective control signals by the servo processor 47, and the driver 4
At 8, the pickup 10 is controlled as a drive signal so that the pickup 10 traces a regular track, while controlling to have a regular focus. The drive signal from the driver 48 controls the direct drive motor 12 to rotate at a constant linear speed.

Further, when the CD is music data, the data from the processor 41 is DA-converted by a DA converter 49 (the audio circuit 25 shown in FIG. 1) and output as an R channel signal and an L channel signal at an output terminal 50a. , 5
0b (audio output jack 26 shown in FIG. 1).

[0029]

As described above, according to the present invention, the optical disk generally has a larger storage capacity than the ROM,
A large amount of information can be processed as compared with the conventional mounting card provided with the. In addition, since the optical disk is provided inside the electronic device main body, the shape of the entire system can be made smaller than when the optical disk is installed outside the electronic device main body. In addition, since an audio circuit and an audio output terminal are provided, it is possible to reproduce an audio CD, and it is possible to realize a multifunctional electronic device incorporating an optical disk storage device.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of one embodiment of the present invention.

FIG. 2 is a diagram showing a state where the device of the present invention is mounted on a computer main body.

FIG. 3 is a detailed configuration diagram of the device shown in FIG.

FIG. 4 is a configuration diagram showing the inside of the CD device in FIG. 3 with a cover removed;

FIG. 5 is a plan view of a main part near a direct driver motor.

FIG. 6 is a detailed plan view near a direct driver motor.

FIG. 7 is a diagram illustrating a state in which a CD is fixed to a table by a clamper according to the present invention.

FIG. 8 is a diagram showing how a plurality of CDs are driven.

FIG. 9 is a block diagram for explaining the operation of the card of the present invention.

[Explanation of symbols]

1 Card body (circuit board) 2 CD device 3 ₁ , 3 ₂ IC package 4 Personal computer body 5 Card mounting guide 6 Main chassis 9 Carriage 10 Pickup 11 CD 12 Direct driver motor 13 Feed motor 14 Cover 18 CD circuit board 19 System control Circuit board 21 Jumper wire 41, 43 Processor 45 Mechanical control circuit 46 System control circuit 50 Host computer

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Noiichi Yabuki 4-8-11 Nakamachi, Atsugi-shi, Kanagawa Mitsumi Tammy Heights (72) Inventor Takehiro Ishikawa 960 Itado 960, Itado-shi, Kanagawa Toda Corp. B (72) Inventor Ide Sachio 1103 Tsurumaki, Hadano-shi, Kanagawa Pref. Corp. Fukagawa 101 (72) Inventor Atsushi Kirii 630-3 Oishida O, Oishida-cho, Kitamurayama-gun, Yamagata Pref. Ref. 630-3 (56) Reference Hei 3-66098 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G11B 25/04 G11B 17/028 G11B 33/12 G06K 19/06

Claims (1)

(57) [Claims] 1. A mechanical control circuit, a data demodulation circuit.
Path, system control circuit, data output section, audio
Circuit base having an audio circuit and an audio output terminal
And a board, integrally mounted on the circuit board and mounted
Pickup and pickup moving device for optical disk
Optical disk storage device that performs playback processing using
Optical disk storage that is detachably built in the electronic device body
An apparatus, wherein the optical disk storage device main body includes: a table on which the optical disk is placed;Said The tape is moved to the tape by the force of the magnet.
The optical disc by holding it between
Clamper to clamp on the tableOptical disc with
Storage device, The circuit board is separated and connected by wiring.
And a first substrate and a second substrate.
The first substrate has at least a mechanical control circuit and
A data demodulation circuit is provided, and the second substrate is
At least part of the audio circuit and audio output
Terminals are provided Disk storage characterized by
apparatus.