JPH09106661A - Method for writing title information into audio system and sound recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a method for writing title information into an audio system and a sound recording medium, which can input the title information such as disk title or performer's name into MD from a CD player. SOLUTION: When sound is recorded on MD from CD, a CD player 10 transmits the TOC information (also title information when the tile information corresponding to the TOC information is stored), which is read out of the CD, to an MD player 40. The MD player 40 records the TOC information (or the TOC information and the title information) in the MD. At the time of MD reproduction, whether the title information has been written in the MD or not, is checked. When the title information has not been written, whether the title information corresponding to the TOC information recorded in the MD has been stored or not, is inquired to the CD player 10. When the title information has been stored, the CD player 10 transmits the title information to the MD player 40 through a bus line 71. The MD player 40 writes the received title information into the MD.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium driving device which is loaded with a recording medium such as a mini disc (hereinafter referred to as MD) and records on the recording medium, and a compact disc (hereinafter referred to as CD) player. The present invention relates to an audio system capable of writing title information such as a disc title or a performer's name in the recording medium, and a method of writing title information in the recording medium.

[0002]

2. Description of the Related Art CDs have high sound quality, can easily find the beginning of a song, have high durability, and have no deterioration in sound quality even after repeated reproduction. The CD player for reproducing a CD is widely used as an in-vehicle audio device.
The CD has a TOC such as the number of songs, playing time, and track information.
A TOC area in which information called information is written is provided. When the CD is loaded, the CD player first reads out the TOC information, and uses this TOC information to find the beginning of a song or the like.

Some CD players allow a user to write a disc title, a player name, etc. (hereinafter referred to as title information). This kind of CD
The player includes a key operation unit for writing title information and a storage unit (RAM), and the title information input by the user from the key operation unit is stored in the storage unit in association with the TOC information. . With a CD player having this title information writing function, when a CD is played back, for example, the disc title of the CD is displayed on the display section.

Further, in recent years, an MD which is about half the size of a CD (diameter 6.4 cm) and which is easier to handle has been developed. The MD includes a reproduction-only MD in which music and the like are recorded in advance and a recording and reproduction MD in which music and the like can be recorded and reproduced by a magneto-optical method. In an audio system equipped with both a MD player for recording and playback and a CD player, a CD
Can be recorded from MD to MD.

[0005]

However, when recording from a CD to an MD, the title information stored in the CD player is not recorded in the MD, so the disc title or performance is reproduced when reproducing the music recorded in the MD. There is a problem that the person's name etc. is lost. MD
Some players also have a title information writing function, but in this case, the user needs to input the title information input to the CD player also to the MD player, which is complicated. Further, in this case, the MD player needs hardware such as a key operation unit for writing the title information and software for operating the hardware, which complicates the design of the MD player and increases the product cost. There is a problem.

From the above, the first object of the present invention is to provide an audio system and a recording system for automatically recording the title information on the recording medium when the title information corresponding to the recorded contents of the recording medium is stored in the CD player. It is to provide a method for writing title information on a medium. A second object of the present invention is to provide an audio system capable of writing title information on a recording medium even if the recording medium driving device does not have hardware for writing title information and software for operating the hardware. And a method of writing title information on a recording medium.

[0007]

SUMMARY OF THE INVENTION The above-mentioned problem is an audio system including a compact disc player and a recording medium driving device, wherein the compact disc player is capable of inputting title information, and the title information inputting means. Information on the compact disc TO
A communication unit capable of communicating with the recording medium driving device and a storage unit for storing in association with the C information, and the recording medium driving device capable of communicating with the compact disc player. And writing means for writing the TOC information and the title information obtained from the compact disc player to the recording medium via the communication means,
And an audio system characterized by having.

Secondly, in an audio system including a compact disc player and a recording medium driving device, the compact disc player includes title information input means capable of inputting title information and the recording medium driving device. The recording medium driving device, the recording medium driving device being capable of communicating with the compact disc player, and the title information obtained from the compact disc player via the communicating means. Is written in a recording medium, and the problem is solved by an audio system.

In the present invention, when recording from a CD to a recording medium such as an MD, the CD player operates from the CD to the TOC.
The information is read and this TOC information is transmitted to the recording medium driving device via the communication means of the CD player. The recording medium driving device receives the TOC information via the communication means of the recording medium driving device and writes the TOC information in the recording medium. In this case, the CD player has a TO
If the title information corresponding to the C information is stored, T
It is preferable that the title information is transmitted to the recording medium driving device together with the OC information, and the recording medium driving device also writes the title information to the recording medium.

After that, when reproducing the recording medium, the recording medium driving device checks whether the title information is written in the loaded recording medium, and if the title information is not written, the recording medium driving device writes the title information in the recording medium. The CD player is requested for title information corresponding to the existing TOC information.
The CD player checks the stored title information in response to the request of the recording medium driving device, and if the title information corresponding to the TOC information is stored, transmits the title information to the recording medium storage device. The recording medium drive is
When the title information corresponding to the TOC information is transmitted, the title information is written on the recording medium. Thus, in the present invention, after recording on the recording medium, C
Even the title information written in the D player can be automatically written in the recording medium.

In another invention of the present application, when title information to be written on a recording medium is input to a CD player,
The CD player sends this title information to the recording medium driving device. In the recording medium driving device, when title information is input from the CD player, the title information is written in the recording medium. This eliminates the need for hardware such as a key operation unit for writing title information and software for operating the hardware in the recording medium driving device, which simplifies the design of the recording medium driving device.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. (First Embodiment) FIG. 1 is an explanatory diagram showing an in-vehicle audio system of the present invention. 10 is a CD player with radio, 30 is a cassette tape player, 40 is an MD player, and 70 is an audio processor. Also, 7
Reference numeral 1 is a bus line connecting the audio units, and digital signals are transmitted and received between the audio units via the bus line 71. Reference numeral 72 denotes an audio signal line, and an audio signal (analog signal) output from each audio unit is sent to the audio processor 70 via the audio signal line 72. The audio processor 70 performs processing such as sound quality adjustment (bass and treble), volume adjustment and amplification on the input audio signal, and outputs it to a speaker (not shown).

A CD player 10 with a radio is a CD player unit 1 for extracting an audio signal from a loaded CD.
1, an FM / AM tuner unit 12, a key operation unit (commander) 13, a CD player unit 11 or an audio signal processing unit 14 for amplifying an audio signal (analog) from the FM / AM tuner unit 12, and a microcomputer. It is composed of a control unit 15 and a bus IC 16.

FIG. 2 is a diagram showing the structure of the CD player 10 in more detail. However, in FIG. 2, the FM / AM tuner section and the audio signal processing section are not shown. Reference numeral 17 denotes a CD in which digital audio signals such as music and TOC information such as the number of songs, playing time and track information are recorded. 22 is a spindle motor for rotating the CD 17. Reference numeral 18 denotes an optical pickup that irradiates the CD 17 with laser light and detects a signal recorded on the CD 17 by reflected light, 19 is a focus servo that controls the focus of the optical pickup 18, and 20 is a tracking servo that controls the tracking of the optical pickup 18. A servo 21 is a feed servo that moves the optical pickup 18 in the radial direction of the CD 17.

Reference numeral 23 is a spindle servo for controlling the rotation of the spindle motor 22, reference numeral 24 is an RF signal, EFM signal, focus error signal from the output of the optical pickup 18.
An RF signal processing unit for creating a tracking error signal,
A digital signal processing unit 25 performs interleaving, EFM demodulation, error correction / interpolation, and demodulates the original digital audio signal. Reference numeral 26 is a D / A converter for D / A converting the audio signal demodulated by the digital signal processing unit 25, 27 is a low-pass filter, and the analog audio signal output from the D / A converter 26 passes through this low-pass filter. Harmonic components are removed.

Reference numeral 15a is a storage unit (RAM) provided in the control unit 15, 28 is a display unit, and the control unit 15 monitors the key operation unit 13 to perform control according to the key operation and the control contents. The reproduction status of the CD or the CD is displayed on the display unit 28. As shown in FIG. 1, the cassette tape player 3
Reference numeral 0 denotes a tape player unit 31 that extracts an audio signal from a cassette tape, an audio signal processing unit 34 that amplifies the audio signal from the tape player unit 31, and the like.
The audio signal processing unit 31 is composed of an equalizer unit 32 for setting adjustment of frequency characteristics when performing signal processing, a control unit 35 including a microcomputer, and a bus IC 36.

The MD player 40 is composed of an MD player section 41 for extracting an audio signal from the MD, an audio signal processing section 44 for amplifying the audio signal, a control section 45 equipped with a microcomputer and a bus IC 46. . FIG. 3 is a diagram showing the MD player 40 in more detail. However, in FIG. 3, the illustration of the audio signal processing unit is omitted.

Reference numeral 47 is a recording / playback MD. 48 is MD
A spindle motor that rotates 47 at a predetermined constant linear velocity, 49 irradiates MD 47 with laser light, detects the signal recorded in MD 47 by reflected light, and raises the temperature above the Curie temperature by irradiation with laser light. , An optical pickup capable of magneto-optical recording by a recording head described later, 5
Reference numeral 0 is a feed motor for feeding the optical pickup 49 in the radial direction of the MD 47, 51 is a recording head for performing magneto-optical recording of new data at the time of recording, and 52 is a head driver for driving the recording head 51.

Reference numeral 53 indicates RF from the output of the optical pickup 49.
Signal and EFM signal, focus error signal, tracking signal, RF amplifier for creating CLV control signal, 54
Is an address decoder for demodulating the address data recorded by the meandering of the group from the RF signal, and 55 is a digital signal processing circuit. During recording, the digital signal processing circuit 55 converts the compressed music data input from the shock proof memory controller 58, which will be described later, or the title information input from the control unit 45 into an EFM signal and outputs the EFM signal to the head driver 52. MD47
At the time of reproducing, the title information and the compressed music data are demodulated from the EFM signal inputted from the RF amplifier 53 and outputted to the control unit 45 and the shockproof memory controller 58 at the time of reproduction, and at the time of recording / reproducing, the address decoder. It has a function of outputting the address data input from 54 to the control unit 45 and further controlling recording and reading of TOC information and title information.

Reference numeral 56 applies focus servo and tracking servo to the optical pickup 49 and thread servo to the feed motor 50 based on the focus error signal and the tracking error signal, and C
This is a servo circuit that applies spindle servo to the spindle motor 48 based on the LV control signal. Reference numeral 57 is a buffer memory (shock proof memory) having a DRAM structure for storing compressed music data for a predetermined time. 58
Is a shock proof memory controller, and while performing predetermined communication with the control unit 45, at the time of recording, compressed music data input from an ATRAC encoder / decoder described later is continuously written to the buffer memory 57 at a normal speed, In parallel with the writing, the compressed music data is output to the digital signal processing circuit 55 intermittently and at high speed. Further, the shock proof memory controller 58 intermittently and at high speed writes compressed data input intermittently and at high speed from the digital signal processing circuit 55 to the buffer memory 57 during reproduction, and continuously writes at a normal speed in parallel with the writing. The compressed data is output to the ATRAC encoder / decoder described later.

The numeral 59 compresses music data input from an A / D converter (not shown) at the time of recording and outputs the compressed music data to the shock proof memory controller 58.
At the time of reproduction, the compressed music data input from the shock proof memory controller 58 is decompressed, converted into music data, and output to a D / A converter (not shown) ATRA
C encoder / decoder (ATRAC: Adaptive Trans)
form Acourstic Coding). 60 is the power on
It is a key operation unit for performing operations such as off, playback, recording, editing, and ejecting. PLAY key, next song seek key, previous song seek key, REC key, track typing key, ST
It includes an OP key, an edit key, and the like. Reference numeral 61 is a display unit for displaying the track number, elapsed playing time, etc., and 62 is an M
A disc insertion detector for detecting D insertion, and a loading unit 63 for MD loading / unloading. 45a storage unit (RA
M).

The bus wire 71 is, as shown in FIG.
The audio units (CD player 10, cassette tape player 30, MD player 40, etc.) 10a are connected through, and the bus I of each unit 10a is connected.
It is connected to C6 (bus ICs 16, 36, 46, etc.). The control unit of each unit 10a takes in a signal sent from another unit 10a via the bus IC 6 and performs a predetermined control, and at the same time, can send the signal to the other unit 10a by mounting the signal on the bus line 71. It has become. That is, each audio unit 10 connected by the bus line 71
a can send and receive signals to and from each other. The signal transfer via the bus line 71 is performed in frame units. One frame is composed of a destination address, a source address, transmission data, and a check code.

The audio signal line 72 is connected in the audio unit 10a as shown in FIG. 4 (b), and the selector 9 follows the instruction from the control unit 5 (control units 15, 35, 45, etc.) to the preceding unit. Either the audio signal sent from the audio source 10a or the audio signal output from the audio source 8 is selected and transferred to the unit 10a in the next stage.

FIG. 5 is a flow chart showing the operation when recording from CD to MD. The processing flow at the time of MD recording will be described below with reference to this figure. First, the CD is loaded into the CD player 10 and the MD is loaded into the MD player 40 (steps 101 and 201). In the CD player 10, the CD
When is loaded, the TOC information of the CD is read and stored in the storage unit 15a of the control unit 15 (step 102). Then, the CD player 10 searches the storage unit 15a to check whether the title information corresponding to the TOC information is stored (step 103). If the title information is not stored, the TOC information is stored, and the title information is stored. If TOC information and title information are both MD
The player 40 is set on the bus line 71 as the destination (step 104).

When the MD player 40 receives TOC information (or TOC information and title information) from the bus line 72 via the bus IC 46 (step 202), this T
The OC information (or TOC information and title information) is stored in the storage unit 45a (step 203). Then, the MD player 40 informs the CD player 10 via the bus line 71 that the recording preparation is completed (steps 204, 1).
05). As a result, the CD player 10 starts playing the CD, and the MD player 40 starts the audio signal line 72.
The audio signal sent from the CD player 10 via the is recorded on the MD (steps 106, 205).

When the reproduction of the CD and the recording on the MD are completed (steps 107 and 206), the MD player 40 writes the TOC information (or the TOC information and the title information) stored in the storage section 45a into the MD ( Step 207).
This ends the processing flow for MD recording. In the above example, the TOC is set after recording on the MD is completed.
Although the case where the information (or TOC information and title information) is written to the MD has been described, the TOC information (or TOC information and title information) may be written to the MD before recording, and the TOC information (or , TOC information and title information) may be written in the MD.

FIG. 6 is a flow chart showing the operation during MD reproduction. Hereinafter, the processing flow during MD reproduction will be described with reference to this figure. First, when the MD player 40 is loaded with the MD (step 211), the MD player 40 reads the TOC information and title information written in the MD (step 212). Then, when the title information is written in the MD, the process shifts from step 213 to step 218 to start the reproduction of the MD.

On the other hand, if the title information is not written in the MD, the process proceeds from step 213 to step 214, and the MD player 40 puts the TOC information and title information request signal on the bus line 71 with the CD player 10 as the destination. When the CD player 10 receives the TOC information and the title information request signal from the bus line 71 (step 111), it searches the storage unit 15a to check whether the title information corresponding to the TOC information is stored (step S111). Step 112). When the title information corresponding to the TOC information is found, the title information is placed on the bus line 71 with the MD player 40 as the destination. If no title information corresponding to the TOC information is found, "empty data" is placed on the bus line 71 with the MD player 40 as the destination (step 113).

In the MD player 40, the CD player 10
The signal sent from the device is received (step 215), and it is judged whether it is title information or "empty data" (step 21).
6). If the received data is title information (YE
In the case of S), the title information is recorded in the MD (step 217) and then the process proceeds to step 218 to reproduce the music recorded in the MD. NO in step 216
In the case of No, nothing is written in the MD and the process proceeds to step 218 to start the reproduction of the MD. As a result, the processing flow during MD reproduction is terminated.

As described above, in the present embodiment, the TOC information and title information of the CD are recorded in the MD when recording from the CD to the MD, and the title information is recorded in the MD when reproducing the MD. If the title information is not recorded, it is checked whether the title information is stored in the CD player 10, and the CD player 10 is checked.
If the title information is stored in the MD, the title information is transmitted to the MD player 40 via the bus line 71,
The player 40 writes the title information received via the bus line 71 in the MD. Therefore, in the present embodiment, the MD player 40 does not need hardware such as a key operation unit for inputting title information and software for operating the hardware, and it takes time to develop the MD player. Not only can it be shortened, but the product cost can be reduced. In the present embodiment,
The user does not need to write the title information written in the CD player 10 into the MD player 40, and the operability is excellent.

In the above embodiment, the CD
The case where the title information corresponding to the TOC information is stored in the player 10 and the title information is automatically written to the MD at the time of recording from the CD to the MD has been described.
Even if the title information corresponding to the information is stored, the title information may not be written in the MD. However,
Also in this case, it is necessary to write at least the TOC information in the MD so that the title information can be automatically written in the MD later.

(Second Embodiment) FIG. 7 shows a second embodiment of the present invention.
5 is a flowchart showing a method of writing title information to an MD according to the embodiment of FIG. Hereinafter, description will be given with reference to FIG. 7. In the present embodiment, in the audio system configured as shown in FIGS. 1 to 3, title information is written in the MD by the following procedure.

First, the user loads an MD into the MD player 40 (step 221). Then, the user inputs the title information to be written in the MD from the key operation unit 13 of the CD player 10 (step 121). The input title information is stored in the storage unit 15a. Then, when the user presses the enter key, the CD player 10 puts the input title information on the bus line 71 with the MD player 40 as the destination.

When the MD player 40 receives the title information via the bus line 71 (step 222), the title information is written in the loaded MD (step 223). In the CD player 10, after transmitting the title information to the MD player 40, the title information stored in the storage unit 15a is erased.

In this embodiment, since the title information is input from the CD player 10, the MD player 4
0 does not require hardware for writing title information and software for operating the hardware. Therefore, the structure of the MD player 40 can be simplified, the time required for design and evaluation can be shortened, and the product cost can be reduced.

Further, in the present embodiment, when playing a CD with the CD player 10, the C
If the title information of D is not stored, it is determined whether the title information is not recorded in the MD.
When the title information corresponding to the CD is recorded in the MD player 40, the title information may be transmitted from the MD player 40 to the CD player 10 via the bus line 71. By doing so, the CD player 10 can display the title information even if the storage unit does not store the title information. As a result, the memory for storing the title information of the CD player 10 can be reduced, and the cost of the CD player can be reduced.

In the first and second embodiments described above, the audio system is a radio CD player 10, a cassette tape player 30, and an MD player 4.
0 and the audio processor 70, the cassette tape player 30 has been described.
Alternatively, or together with the cassette tape player 30, a navigation device, telephone, TV, video player, DC
A C (digital compact cassette) player, an MD changer, a CD changer, etc. may be connected via a bus line 71 and an audio signal line 72.

Further, by combining the first and second embodiments described above, when title information corresponding to TOC information written in the MD is stored in the CD player 10, the MD player is automatically operated. The title information is transmitted to the CD 40, written in the MD, and sent to the CD player 10 as a TO.
When the user inputs title information from the CD player 10 when the C information is not written, the title information may be transmitted to the MD player 40 and written in the MD.

Further, in the above embodiment, the case where the recording medium is MD has been described, but the present invention is not limited to MD, for example, DAT (digital audio tape), DC.
It can also be applied to a recording medium such as C (digital compact cassette).

[0040]

As described above, according to the present invention,
When recording from a CD to a recording medium such as an MD, at least the TOC information of the CD is written in the recording medium, and when the title information is not recorded in the recording medium when the recording medium is reproduced, the TOC information corresponds to the TOC information. It is checked whether the title information is stored in the CD player, and if it is stored, the title information is transmitted to the recording medium driving device and written in the recording medium. Therefore, the title information written by the user in the CD player is driven in the storage medium. There is no need to re-input to the device, and the operability is excellent. Further, the recording medium driving device does not require hardware such as a key operation unit for inputting title information and software for operating the hardware, and the structure of the recording medium driving device such as an MD player can be simplified. The product cost can be reduced.

According to another invention of the present application, when title information is input from the CD player, the CD player transmits the title information to the recording medium driving device, and the recording medium driving device transmits the title information to the recording medium. Since the writing is performed, the structure of the recording medium driving device is simplified and the product cost can be reduced.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an audio system according to the present invention.

FIG. 2 is a diagram showing the configuration of the CD player of FIG. 1 in more detail.

FIG. 3 is a diagram showing the configuration of the MD player of FIG. 1 in more detail.

FIG. 4 is an explanatory diagram showing connections between audio units.

FIG. 5 is a diagram showing a processing flow during MD recording.

FIG. 6 is a diagram showing a processing flow during MD reproduction.

FIG. 7 is a diagram showing a method of writing title information to an MD according to the second embodiment of the present invention.

[Explanation of symbols]

 10 CD player with radio 30 Cassette tape player 40 MD player 70 Audio processor 71 Bus line 72 Audio signal line

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location G11B 27/10 A

Claims (4)

[Claims] 1. An audio system comprising a compact disc player and a recording medium drive, wherein the compact disc player associates title information input means capable of inputting title information with the TOC information of the compact disc. And a communication unit capable of communicating with the recording medium driving device, wherein the recording medium driving device communicates with the compact disc player and the communication unit. An audio system, comprising: writing means for writing the TOC information and the title information obtained from the compact disc player via a means to a recording medium. 2. An audio system comprising a compact disc player and a recording medium driving device, wherein the compact disc player is capable of communicating between title information input means capable of inputting title information and the recording medium driving device. The recording medium driving device includes a communication unit capable of communicating with the compact disc player, and the title information obtained from the compact disc player via the communication unit in a recording medium. An audio system comprising a writing means for writing. 3. When recording from a compact disc onto a recording medium, the compact disc player transmits at least TOC information read from the compact disc to a recording medium driving device, and the recording medium driving device receives the TOC information. At the time of writing and reproducing on the recording medium, when the title information is not written on the recording medium, the recording medium driving device requests the compact disc player for the title information corresponding to the TOC information written on the recording medium, In response to this request, the compact disc player checks the stored title information and, if there is title information corresponding to the TOC information, sends the title information to the recording medium driving device, and the recording medium driving device transmits the title information. Upon receipt, write the title information to the recording medium Title information method of writing to the recording medium, wherein the door. 4. When the title information is input to the compact disc player, the compact disc player transmits the title information to the recording medium driving device, and the recording medium driving device receives the title information and writes it on the recording medium. Title information writing method on recording media.