JP3453466B2 - How to write title information on a recording medium - Google Patents

Description

Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a recording medium drive for loading a recording medium such as a mini-disc (hereinafter referred to as MD) and recording on the recording medium, and a compact recording medium. In an audio system having a disc (hereinafter, referred to as a CD) player, the present invention relates to an audio system capable of writing title information such as a disc title or a player name to the recording medium and a method of writing title information to the recording medium. 2. Description of the Related Art CDs have high sound quality, are easy to find the beginning of music, have high durability, and have no deterioration in sound quality even after repeated reproduction. A CD player that has excellent features and plays a CD is widely used as an in-vehicle audio device.
The CD contains TOC information such as the number of songs, performance time, and track information.
A TOC area in which information called information is written is provided. When a CD is loaded, the CD player first reads out the TOC information, and uses the TOC information to locate the beginning of a music piece. [0003] Some CD players allow a user to write a disc title, a player name, and the like (hereinafter, referred to as title information). This kind of CD
The player has a key operation unit for writing title information and a storage unit (RAM), and stores the title information input by the user from the key operation unit in the storage unit in association with the TOC information. . In a CD player having the title information writing function, when a CD is reproduced, a disc title of the CD is displayed on a display unit, for example. In recent years, MDs that are about half the size of a CD (6.4 cm in diameter) and that are easier to handle have also 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 capable of recording and reproducing music and the like by a magneto-optical method. In an audio system having both a MD player for recording and playback and a CD player, a CD
Can be recorded on MD. [0005] However, when a CD is recorded on an MD, the title information stored in the CD player is not recorded on the MD. There is a problem that the title or the name of the player cannot be known. 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 to the MD player, which is complicated. In this case, the MD player needs hardware such as a key operation unit for writing 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. Accordingly, a first object of the present invention is to provide an audio system and a recording system for automatically recording title information on a recording medium when title information corresponding to the recorded content of the recording medium is stored in a CD player. An object of the present invention is to provide a method for writing title information on a medium. Further, a second object of the present invention is to provide an audio system capable of writing title information on a recording medium without hardware for writing title information in a recording medium drive and software for operating the hardware. And a method of writing title information on a recording medium. [0007] [0008] [0009] In the present invention, in order to solve the problems], when recording from the disk recording medium, the disc player reads the TOC information from the disc, the disc player of this TOC information Is transmitted to the recording medium drive via the communication means. The recording medium drive receives the TOC information via the communication means of the recording medium drive, and writes the TOC information to the recording medium. In this case, if the title information corresponding to the TOC information is stored therein, the disc player transmits the title information together with the TOC information to the recording medium drive, and the recording medium drive also records the title information. It is preferable to write on the medium. [0010] Thereafter, when reproducing the recording medium, the recording medium drive checks whether title information is written on the loaded recording medium, and if the title information is not written, the title information is written on the recording medium. TOC
Requests title information corresponding to the information from the disc player . The disc player checks the stored title information in response to a request from the recording medium drive, and checks the TOC
If title information corresponding to the information is stored, the title information is transmitted to the recording medium storage device. When the title information corresponding to the TOC information is transmitted, the recording medium drive writes the title information on the recording medium.
In this manner, in the present invention, even the title information written to the disc player after being recorded on the recording medium can be automatically written on the recording medium. Embodiments of the present invention will be described below with reference to the accompanying drawings. (First Embodiment) FIG. 1 is an explanatory diagram showing a vehicle-mounted audio system according to the present invention. Reference numeral 10 is a CD player with a radio, 30 is a cassette tape player, 40 is an MD player, and 70 is an audio processor. Also, 7
Reference numeral 1 denotes 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 the processed signal to a speaker (not shown). The CD player with radio 10 is a CD player unit 1 for extracting an audio signal from a loaded CD.
1, an FM / AM tuner section 12, a key operation section (commander) 13, an audio signal processing section 14 for amplifying an audio signal (analog) from the CD player section 11 or the FM / AM tuner section 12, and a microcomputer. It comprises a control unit 15 and a bus IC 16. FIG. 2 is a diagram showing the configuration of the CD player 10 in more detail. However, in FIG. 2, illustration of the FM / AM tuner unit and the audio signal processing unit is omitted. Reference numeral 17 denotes a CD in which digital audio signals such as music and TOC information such as the number of music pieces, performance time, and track information are recorded. Reference numeral 22 denotes a spindle motor for rotating the CD 17. Reference numeral 18 denotes an optical pickup for irradiating the CD 17 with a laser beam and detecting a signal recorded on the CD 17 by reflected light, 19 a focus servo for controlling the focus of the optical pickup 18, and 20 a tracking for controlling the tracking of the optical pickup 18. A servo 21 is a feed servo for moving the optical pickup 18 in the radial direction of the CD 17. Reference numeral 23 denotes a spindle servo for controlling the rotation of the spindle motor 22; 24, an RF signal, EFM signal, focus error signal,
An RF signal processing unit that creates a tracking error signal and the like;
Reference numeral 25 denotes a digital signal processing unit that performs interleaving, EFM demodulation, error correction and interpolation, and demodulates an original digital audio signal. 26 is a D / A converter for D / A converting the audio signal demodulated by the digital signal processing unit 25, and 27 is a low-pass filter. The analog audio signal output from the D / A converter 26 passes through this low-pass filter. Harmonic components are removed. Reference numeral 15a denotes a storage unit (RAM) provided in the control unit 15, and 28 denotes a display unit. The control unit 15 monitors the key operation unit 13, performs control according to the key operation, and controls the contents. And the reproduction status of the CD are displayed on the display unit 28. As shown in FIG. 1, the cassette tape player 3
0 denotes a tape player unit 31 for extracting an audio signal from a cassette tape, an audio signal processing unit 34 for amplifying an audio signal from the tape player unit 31, and the like.
The audio signal processing unit 31 includes 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 comprises 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 having a microcomputer, and a bus IC 46. . FIG. 3 is a diagram showing the MD player 40 in more detail. However, the illustration of the audio signal processing unit is omitted in FIG. Reference numeral 47 denotes a recording / reproduction MD. 48 is MD
A spindle motor for rotating 47 at a predetermined constant linear velocity. 49 irradiates a laser beam to the MD 47, detects a signal recorded on the MD 47 by reflected light, or raises the temperature to a Curie temperature or higher by irradiating the laser beam. An optical pickup that enables magneto-optical recording with a recording head described later, 5
Reference numeral 0 denotes a feed motor for feeding the optical pickup 49 in the radial direction of the MD 47; 51, a recording head for performing magneto-optical recording of new data during recording; and 52, a head driver for driving the recording head 51. Reference numeral 53 denotes an RF signal from the output of the optical pickup 49.
RF amplifier for generating signals, EFM signals, focus error signals, tracking signals, and CLV control signals, 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. At the time of recording, the digital signal processing circuit 55 converts the compressed music data input from a shock proof memory controller 58 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, and outputs the EFM signal to the recording head 51. MD47
During playback, title information and compressed music data are demodulated from the EFM signal input from the RF amplifier 53 and output to the control unit 45 and the shock-proof memory controller 58 at the time of playback. It has a function of outputting the address data input from 54 to the control unit 45 and controlling the recording and reading of TOC information and title information. Reference numeral 56 denotes a focus servo and tracking servo applied to the optical pickup 49 based on the focus error signal and the tracking error signal, a thread servo applied to the feed motor 50, and C
This is a servo circuit for applying a spindle servo to the spindle motor 48 based on the LV control signal. Reference numeral 57 denotes 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, which performs predetermined communication with the control unit 45 and continuously writes compressed music data input from an ATRAC encoder / decoder (to be described later) to a buffer memory 57 at normal speed during recording. The compressed music data is output intermittently and at high speed to the digital signal processing circuit 55 in parallel with the writing. During reproduction, the shock proof memory controller 58 intermittently and rapidly writes compressed data input from the digital signal processing circuit 55 intermittently and at high speed into the buffer memory 57. To output the compressed data to an ATRAC encoder / decoder described later. At the time of recording, 59 compresses music data input from an A / D converter (not shown), and outputs the compressed music data to a shock-proof memory controller 58.
At the time of reproduction, ATRA which expands the compressed music data inputted from the shock proof memory controller 58, converts it into music data, and outputs it to a D / A converter (not shown)
C encoder / decoder (ATRAC: Adaptive Trans)
form Acourstic Coding). 60 is the power on
A key operation unit that performs operations such as OFF, playback, recording, editing, and ejecting. PLAY key, next song seek key, previous song seek key, REC key, track recording key, ST key
An OP key, an edit key, and the like are included. Reference numeral 61 denotes a display unit for displaying a track number, performance elapsed time, and the like.
A disk insertion detection unit 63 for detecting the insertion of D, and a loading unit 63 for loading / unloading the MD. The storage unit (RA) provided in the control unit 45a
M). The bus line 71 is, as shown in FIG.
Through connections are made inside each audio unit (CD player 10, cassette tape player 30, MD player 40, etc.) 10a, and the bus I of each unit 10a is connected.
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, performs predetermined control, and transmits the signal to the other unit 10a via the bus line 71. It has become. That is, each audio unit 10 connected by the bus line 71
a can mutually transmit and receive signals. Signal transfer via the bus line 71 is performed in frame units. One frame includes 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 operates in accordance with an instruction from the control unit 5 (control units 15, 35, 45, etc.) to operate the unit at the preceding stage. One of the audio signal transmitted from the audio source 10a and the audio signal output from the audio source 8 is selected and transferred to the next unit 10a. FIG. 5 is a flowchart showing the operation when recording from a CD to an MD. Hereinafter, a processing flow at the time of MD recording will be described with reference to FIG. First, a CD is loaded into the CD player 10, and an MD is loaded into the MD player 40 (steps 101 and 201). In the CD player 10, the CD
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 title information corresponding to the TOC information is stored (step 103). If no title information is stored, the TOC information is stored. If the TOC information and the title information are both
The player 40 is put on the bus line 71 as a destination (step 104). 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).
The OC information (or the TOC information and the title information) is stored in the storage unit 45a (Step 203). Then, the MD player 40 notifies the CD player 10 via the bus line 71 that the preparation for recording is completed (steps 204 and 1).
05). As a result, the CD player 10 starts reproducing the CD, and the MD player 40 starts reproducing the audio signal line 72.
The audio signal sent from the CD player 10 via the DVD is recorded on the MD (steps 106 and 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 unit 45a on the MD (step 107). Step 207).
Thereby, the processing flow at the time of MD recording ends. Note that, in the above example, after the recording to the MD is completed, the TOC
The case where the information (or the TOC information and the title information) is written to the MD has been described. However, the TOC information (or the TOC information and the title information) may be written to the MD before recording, and the TOC information (or the TOC information (or , TOC information and title information) may be written to the MD. FIG. 6 is a flowchart showing the operation during MD playback. Hereinafter, a processing flow at the time of MD reproduction will be described with reference to FIG. First, when an MD is loaded into the MD player 40 (step 211), the MD player 40 reads out TOC information and title information written in the MD (step 212). If the title information has been written to the MD, the process proceeds from step 213 to step 218 to start reproduction of the MD. On the other hand, if the title information has not been written to the MD, the process proceeds from step 213 to step 214, and the MD player 40 places the TOC information and the title information request signal on the bus line 71 with the CD player 10 as the destination. Upon receiving the TOC information and the title information request signal from the bus line 71 (step 111), the CD player 10 searches the storage unit 15a to check whether title information corresponding to the TOC information is stored (step 111). Step 112). When title information corresponding to the TOC information is found, the title information is loaded on the bus line 71 with the MD player 40 as a destination. If no title information corresponding to the TOC information is found, "empty data" is loaded on the bus line 71 with the MD player 40 as a destination (step 113). In the MD player 40, the CD player 10
Is received (step 215), and it is determined whether the information is title information or "empty data" (step 21).
6). When the received data is title information (YE
In the case of S), the title information is recorded on the MD (step 217), and then the process proceeds to step 218 to reproduce music or the like recorded on the MD. NO at step 216
In the case of, the process proceeds to step 218 without writing anything to the MD, and the reproduction of the MD is started. Thus, the processing flow at the time of reproducing the MD is completed. As described above, in the present embodiment, the TOC information and the title information of the CD are recorded on the MD when recording from the CD to the MD, and the title information is recorded on the MD when reproducing the MD. If title information is not recorded, it is checked whether title information is stored in the CD player 10.
If the title information is stored in the MD player 40 via the bus 71, the title information is transmitted to the MD player 40.
The player 40 writes the title information received via the bus line 71 to 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 the time required for developing the MD player is reduced. In addition to shortening, product costs can be reduced. In the present embodiment,
There is no need for the user to further write the title information written on the CD player 10 to the MD player 40, and the operability is excellent. In the above embodiment, the CD
A case has been described 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 when recording from the CD to the MD.
Even if the title information corresponding to the information is stored, the title information may not be written to the MD. However,
Also in this case, at least the TOC information needs to be written to the MD so that the title information can be automatically written to the MD later. (Second Embodiment) FIG. 7 shows a second embodiment of the present invention.
9 is a flowchart showing a method for writing title information to an MD according to the embodiment. Hereinafter, description will be made with reference to FIG. In the present embodiment, in the audio system configured as shown in FIGS. 1 to 3, title information is written to the MD according to the following procedure. First, the user loads an MD into the MD player 40 (step 221). Then, the user inputs title information to be written to 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. Thereafter, when the user presses the enter key, the CD player 10 places 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), it writes the title information to the loaded MD (step 223). After transmitting the title information to the MD player 40, the CD player 10 deletes the title information stored in the storage unit 15a. In this embodiment, since 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 reduced, and the product cost can be reduced. In this embodiment, when playing a CD with the CD player 10, the CD player 10
When the title information of D is not stored, the MD player 40 checks whether the title information is recorded on 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 title information is not stored in the storage unit. As a result, the title information storage memory of the CD player 10 can be reduced, and the cost of the CD player can be reduced. In the first and second embodiments, the audio system is a CD player 10 with a radio, a cassette tape player 30, an MD player 4
0 and the audio processor 70, the cassette tape player 30
, Or together with the cassette tape player 30, a navigation device, telephone, TV, video player, DC
A C (digital compact cassette) player, MD changer, CD changer, and the like may be connected via the bus line 71 and the audio signal line 72. When title information corresponding to the TOC information written in the MD is stored in the CD player 10 by combining the first and second embodiments, the MD player is automatically turned on. The title information is transmitted to the MD player 40 and written to the MD, and the CD player 10
If 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 to the MD. Further, in the above-described embodiment, the case where the recording medium is an MD has been described.
It is also possible to apply to a recording medium such as C (digital compact cassette). 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 on the recording medium. When title information is not recorded on the recording medium during reproduction of the recording medium, the TOC information corresponds to the TOC information. It is checked whether the title information is stored in the CD player. If the title information is stored, the title information is transmitted to the recording medium drive and written on the recording medium. There is no need to re-enter the device, and the operability is excellent. Further, the recording medium drive does not require hardware such as a key operation unit for inputting title information and software for operating the hardware, so that the structure of the recording medium drive such as an MD player can be simplified. Thus, the product cost can be reduced. According to another aspect of the present invention, when title information is input from a CD player, the CD player transmits the title information to a recording medium drive, and the recording medium drive transmits the title information to a recording medium. Since writing is performed, it is possible to simplify the structure of the recording medium driving device and to reduce the product cost.

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 shown in 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 at the time of MD reproduction. FIG. 7 is a diagram illustrating a method of writing title information to an MD according to a second embodiment of the present invention. [Description of Signs] 10 CD player with radio 30 Cassette tape player 40 MD player 70 Audio processor 71 Bus line 72 Audio signal line

Claims (1)

(57) [Claims] [Claim 1] When recording from a disk to a recording medium,
Disc player sends TOC information read from at least the disk recording medium driving apparatus, the recording medium driving device writes the recording medium by receiving the TOC information, the time of reproducing the recording medium, the recording medium drive the When the title information is not written on the recording medium, the disc player requests title information corresponding to the TOC information written on the recording medium, and the disc player responds to the request with the stored title information. Checking, if there is title information corresponding to the TOC information, transmitting the title information to the recording medium drive, and upon receiving the title information, the recording medium drive writes the title information to the recording medium. How to write a title on a recording medium.