JPH11149701A - Optical information storage medium and optical information reproducer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a clock function as another reproducing function in addition to a normal music reproducing function. SOLUTION: When a CD 1 for a second-mode reproduction is set to the reproducer and an auxiliary switch 16 is turned on, whether or not the auxiliary switch 16 is turned on is decided in step S1, a main switch 20 is turned on in step S2, and read-in reproduction is conducted in step S3. The second mode reproduction is performed when a CPU 5 decides the presence of a discrimination signal in step S5. That is, a reproduction time is confirmed in step S6, and the main switch 20 is turned on in step S7 and the reproduction standby of step S8 is conducted. The reproduction time is judged in step S9 at the reproduction time, and it proceeds to step S10 where reproduction is carried out for a fixed time and the time is informed. Different musical composition is reproduced for spring, summer, autumn and winter. The season is decided by the CPU 5 based on month information from a clock means 19, and a season identification signal is read from the contents of a first memory 13 and music can be selected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical information storage medium and an optical information reproducing apparatus, and more particularly, to an optical information storage medium in which optically readable information is recorded on an information track, and the optical information storage medium. The present invention relates to an optical information reproducing apparatus for reproducing a storage medium.

[0002]

2. Description of the Related Art In recent years, playback devices for optical recording discs, for example, compact discs (hereinafter referred to as "CDs"), have shown a high rate of penetration to replace LP record playback devices due to their good sound quality. I have.

[0003]

However, when the state of use of the conventional CD reproducing apparatus is viewed, the whole or a part of the music recorded on the CD is simply reproduced. It was not sufficient in terms of effective use of the device.

The present invention has been made to solve the above problems, and proposes to add a clock function as another reproduction function to this kind of reproduction apparatus in addition to a normal music reproduction function. Things.

[0005]

According to the first aspect of the present invention, there is provided an optical information storage medium in which optically readable information is recorded on an information track to achieve the above object. In the storage medium, the information track includes a main information recording area in which a plurality of main information such as music information is recorded, reproduction time designation information for designating a reproduction time of the main information, and a cue of the main information. A TOC information recording area in which necessary address information is recorded, wherein the TOC information recording area is arranged at a position where reproduction is performed prior to reproduction of main information recorded in the main information recording area, One main information is selected from a plurality of the main information based on the reproduction time designation information and the address information.

According to a second aspect of the present invention, there is provided an optical information storage medium according to the first aspect, wherein:
Reproduction season designation information for designating the reproduction season of the main information is recorded in the TOC information recording area, and one main information is selected from a plurality of the main information based on the reproduction season designation information. It is characterized by the following.

According to a third aspect of the present invention, there is provided the optical information storage medium according to the first or second aspect, wherein the TOC information recording area is such that the optical information storage medium is specified in the TOC information recording area. Application information indicating that the optical information storage medium is used for an application is recorded, and the optical information storage medium is identified based on the application information.

An optical information reproducing apparatus according to a fourth aspect of the present invention is an optical information reproducing apparatus for selecting and reproducing one piece of main information from a plurality of pieces of main information recorded on an optical information storage medium. The optical information storage medium has optically readable information recorded on an information track, and the information track has a main information recording area in which a plurality of pieces of main information such as music information are recorded. A TOC information recording area in which reproduction time designation information for designating a reproduction time of the main information and address information necessary for cueing the main information are recorded, wherein the TOC information recording area is The optical information reproducing apparatus is arranged at a position to be reproduced prior to reproduction of the main information recorded in the area, and based on a comparison result of a current time and the reproduction time designation information and the address information, , Characterized by including a main information selection means for selecting the main information to be viable.

According to a fifth aspect of the present invention, in the optical information reproducing apparatus according to the fourth aspect,
In the TOC information recording area of the optical information storage medium, reproduction season designating information for designating a reproduction season of the main information is recorded, and the main information selecting means includes a current season and the reproduction season designating information. The main information to be reproduced is selected based on the comparison result with the address information.

According to a sixth aspect of the present invention, in the optical information reproducing apparatus according to the fourth or fifth aspect, the TOC information recording area of the optical information storage medium includes: Usage information indicating a use of the optical information storage medium is recorded, and the optical information reproducing apparatus includes an identification unit for identifying the optical information storage medium based on the use information. And

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings, taking a music clock CD (in which an identification signal for an adult / child may be recorded) as an example.

FIG. 1 is a block circuit diagram of a reproducing apparatus capable of reproducing a plurality of modes.

Reference numeral 1 denotes a CD for reproducing the second mode, on which various digital signals are recorded in a format as shown in FIGS. 3 to 7, and which is processed by the reproducing apparatus shown in FIG. The second mode reproduction is performed according to the procedure.

The CD 1 is a music clock CD for performing the second mode reproduction. The signal format as shown in FIG. 3, that is, music data is recorded on a spiral track together with a synchronization signal, sub-coding and error correction code. A
In the frame configuration shown by, a number of frames are recorded in series as shown by B. The subcoding of each frame is composed of 8 bits of P, Q, R, S, T, U, V, and W. One block is composed of 98 frames as shown by C in FIG. C1 in FIG.
Indicated by S0 and S1 are block synchronization signals. The content of the data part of the Q channel block is C
D Innermost lead-in area D2 and program area D
1 is different from that of FIG.

That is, in the lead-in area, the contents of one horizontal column in FIG. 4 are recorded using one block of the Q channel. This point information is information called TOC.
In the program area, relative time information J1 indicating the number of minutes, seconds, and frame of the song in the format of D1 and absolute time information J from the start of the program area.
2 is recorded, and if the number of music to be reproduced is determined, a desired music can be accessed using the TOC information in the lead-in area and the absolute time information in the program area.

Although the above description is well known in the conventional CD format itself, the feature of the present embodiment is that CD1 has two types for each of the spring, summer, autumn and winter seasons.
4 songs, 96 songs in total for music clock,
For other uses, one tune is recorded for wake-up, and 24 tunes are selected so that different tunes are played at the beginning of each hour from midnight to 11:00 pm, and the tune corresponding to the time zone is selected. It is. In addition, since about 97 songs are recorded on one CD, it is about 30 seconds per song.

Further, the CD1 includes a mode identification signal M1 for identifying a CD for music clock mode reproduction, a season identification signal M2 for identifying which song is for which season, and which song is included. A reproduction time identification signal M3 for identifying which time is used is recorded using the R, S, T, U, V, and W channels in the lead-in area. This will be described with reference to FIGS.

The user's bits are formed as one block in which 98 frames are collected as shown in FIG. 5, and are decoded as a control signal. The P channel is used as information indicating whether or not the beginning of a song, and the Q channel is used as information. As described above, it is used as TOC information indicating time information and the like. Although the remaining R to W channels are in an unused state, a standard format E1 as shown in FIG. 6 is defined, and this format E1 is repeated four times in 1/75 second. MODE is set to “111” as the user mode, and ITE
A format E2 of mode 7 shown in FIG. 7 in which M is “000” is defined and can be used by the user as needed.

Here, INSTRUC in mode 7
By setting TION to, for example, “111111”, CD1
And DAT for identifying the music clock, that is, for reproducing the second mode.
A station number signal indicating the number of the song is recorded in the first frame of A FIELD, and two bits before the second frame indicate 00: spring, 01: summer, 10: autumn, 11: winter, etc. Without the season identification signal M2, the last four bits record season serial number information indicating the number of sheets corresponding to the season, and the third
The reproduction time identification signal M3 indicates at what time the frame is reproduced.
And that. The remaining DATA FIELDs all record "0".

The format shown in FIG. 7 corresponds to the hatched portion in FIG. 5, and in FIG. 4 showing the TOC information of the lead-in area, for example, information "01" and "0" of the first music are shown.
"0, 02, 32" are recorded in the Q channel of one block in FIG. 5, and user information as shown in FIG. 7, for example, is recorded in the R to W channels of this block. Since only 24 frames are used in FIG. 7, the same 24 frames are repeated four times, or only the first 24 frames are recorded, and the user information is not recorded in the subsequent frames. Since the tune 97 is a wake-up tune, M2 is set as a specific signal.

Next, a reproducing apparatus applied to this embodiment will be described with reference to FIGS.

Reference numeral 2 denotes a disk drive motor.

Reference numeral 3 denotes a well-known information reading pickup which irradiates a laser beam onto a track of the CD 1, detects reflected light, converts the reflected light into an electric signal, and reads out information recorded on a disk.

Reference numeral 4 denotes an access circuit, which is a signal K for driving the motor 2 for reproduction or standby for reproduction by an access signal from a central processing unit (hereinafter referred to as "CPU") 5 described later.
1 and a signal K2 for performing an optical system feed operation for moving the pickup 3 in the radial direction to access a predetermined track, a tracking operation, and a focus operation in response to an access signal from the CPU 5.

Reference numeral 6 denotes a reproduction circuit which converts a signal read from the pickup 3 into an analog signal, supplies the analog signal to a speaker 7 through an amplifier circuit (not shown), and performs signal processing such as detection of sub-coding. The reproduction circuit 6 includes an analog waveform shaping circuit 8 for shaping the output of the pickup 3, a synchronization detecting circuit 9, EFM demodulation, error correction, correction,
A digital signal processing circuit 10 that performs a decoding operation such as deinterleaving and CRC decoding, and a D / A converter that D / A converts a digital music signal output from the signal processing circuit 10
It includes an A converter 11, a subcoding detection circuit 12 for detecting and outputting a subcode signal from the output of the signal processing circuit 10, and the like.

Reference numeral 13 denotes a first memory comprising a RAM for storing the sub-coding of the lead-in area output from the sub-coding detection circuit 12, which stores the TOC information of FIG. 4 and the user information such as the mode identification signal M1 of FIG. It is also stored together. Therefore, for example, when the season information and the reproduction time are designated, the absolute time information (point information in FIG. 4) which is the address information of the music to be reproduced can be output.

Reference numeral 14 denotes a display unit using, for example, a liquid crystal, which is configured to display a song number at the time of the first mode reproduction and to display a current time at the time of the second mode reproduction.

Reference numeral 15 denotes an operation unit, which is a manual auxiliary switch 16 and a switch for setting a reproduction time (not shown), and performs a time signal music reproduction from a specific time zone, for example, from 10 pm to 6 am A switch mechanism such as a reproduction prohibition switch (not shown) for prohibition is included.

Reference numeral 17 denotes a second memory comprising a RAM for temporarily storing information input from the reproduction time setting switch and the reproduction inhibition switch.

Reference numeral 18 denotes a third memory, which is a CPU control procedure for the first mode reproduction when normal reproduction of a CD not including a mode identification signal is performed, and a second mode reproduction when music clock reproduction is performed by the CD1. And a ROM in which 24 times of reproduction time from 00: 00: 03: 00 to 23: 00: 00: 00 are stored in advance.

Reference numeral 19 denotes a clock means for outputting at least a month signal and a time (hour, minute, second) signal of the day.
5 is a first memory 13, a second memory 17, a third memory 18
Based on signals from the operation unit 15 and the clock unit 19, an access signal is output to the access circuit 4 according to the control procedure shown in FIG. .

A power supply 21 supplies power to a portion 22 surrounded by a dashed line via the auxiliary switch 16 and the access circuit 4 and the reproduction circuit 6 via the auxiliary switch 16 and the main switch 20.
Power.

Reference numeral 23 denotes a backup power supply for the clock means 19.

Next, the operation of the reproducing apparatus will be described with reference to the flowchart of FIG.

First, the CD 1 for the second mode reproduction is set in the reproducing apparatus and the auxiliary switch 16 is turned on. In step S1, it is determined whether or not the auxiliary switch 16 is ON.
S, the main switch 20 is turned off in the next step S2.
In step S3, the lead-in reproduction is performed. That is, an access signal is sent from the CPU 5 to the access circuit 4 to rotate the motor 2, and the pickup 3 is positioned at the lead-in part of the CD1 to reproduce the lead-in part. The sub coding is stored in the first memory 13. In step S4, the main switch 20 is turned off.

Then, in step S5, the first memory 13
The second mode reproduction is performed by the CPU 5 determining that the mode identification signal M1 of FIG. 7 exists in the stored contents of the second mode reproduction, and the processing steps S6 to S2 of the second mode reproduction are performed.
11 is executed. That is, in step S6, the CPU 5
Is the reproduction time stored in the third memory 18, for example, 7 am
The time signal from the clock means 19 is checked to see if it is three seconds before the hour, hour, minute, and zero seconds. When three seconds have passed, the main switch 20 is turned on in the next step S7 and the reproduction standby in step S8 is performed. In this playback standby, the CPU 5 searches the stored contents of the first memory 13 for the playback music corresponding to the playback time of 7:00 am, knows the position of the playback music in the CD1, that is, the absolute time position, and 4 while rotating the motor 2 and moving the pickup 3 to the absolute time position at the start of music reproduction while comparing it with the ever-changing absolute time information K3 from the CD 1, and still (still reproduction)
State. At this time, consideration is made so that sound is not output from the speaker 7 in the reproduction circuit 6.

When the playback time reaches 7:00:00 AM, this is determined in step S9, and the process proceeds to step S10 for playback for a predetermined time. In this step, sound is output from the speaker, the still state is released, the radial feed of the pickup 3 is restarted, and the seventh song of CD1 is played for a predetermined time, for example, 10 seconds, and the time is set. Inform. Similarly, at 8:00 am, 9:00 am. . . As mentioned above, at the beginning of each hour, a different song is played for 10 seconds to inform the time.

The reproduced music is changed in spring, summer, autumn, and winter. This is based on the month information from the clock means 19 and the CPU
5 is possible by judging the season, reading the season identification signal M2 from the contents of the first memory 13, and selecting a song.

As described above, in the present embodiment, the reproduced music changes depending on the time and the season, so that the user can know the time of the music and can enjoy a sense of the season. ing.

As described above, by operating the reproduction prohibition switch on the operation unit 15, it is possible to prohibit time reporting during an unnecessary time zone for normal time reporting. In order to perform the wake-up operation, the 97th song is reproduced at the set time by storing the 97th song and the time at which it is reproduced from the operation unit 15 in association with each other. Thus, when step S10 is completed, the main switch 20 is turned off in step S11, the process returns to step S5, and the loop of steps S5 to S11 to S5 is repeated.

Next, when a normal CD different from the music clock CD 1 is set, step S1-step S2-step S3- in the flowchart of FIG.
The process proceeds to step S4 to step S5, and N
The determination of O is made, and the first mode reproduction processing procedure of steps S12 to S16 is executed. That is, in step S12, it is determined whether or not the reproduction user desires the first mode. In this case, for example, a separate play button (not shown) of the operation unit 15 is provided, and it is determined whether or not this button has been pressed. When the play button is pressed, the main switch 20 is turned on in step S13, and the first mode reproduction is performed in step S14.
In the first mode reproduction, a CD is reproduced from the beginning to the end, or a specific song is reproduced. After the reproduction, the main switch 20 is turned off in step S15, and the process reaches the end. In the first mode reproduction, it is desirable to provide a step of turning off the auxiliary switch 16 after step S15 so that the auxiliary switch 16 can be turned off.

The present invention is not limited to the above-described embodiment, but can be variously developed, and includes, for example, the following embodiments.

(1) In the above embodiment, two types of discs, the normal playback mode and the music clock playback mode, are disclosed, but discs in other modes may be used.

(2) In the above embodiment, the mode identification signal is recorded by using the R-W channel of the user's bit in the lead-in area. Change,
This may be detected by the detection means to select the second mode reproduction. It is also possible to record an identification signal on a track other than the lead-in area.

(3) In the above embodiment, the correspondence between the reproduction time and the music is recorded on the disk itself. However, a table showing the correspondence is stored in the ROM such as the third memory 18 or the like. Is also good.

(4) In the above embodiment, the reproduction music is changed every time the reproduction time is changed. However, it is not always necessary to change the reproduction music.
For example, the playback portion of one long song may be changed each time the playback time changes.

(5) In the above embodiment, songs for four seasons of spring, summer, autumn, and winter are recorded on one disc.
The songs may be recorded on individual discs for each season.

(6) In the above embodiment, the order in which the music is reproduced does not always match the order in which the music was recorded on the disk, but the music may be reproduced in the recording order.

(7) The reproduction time is included in the second mode reproduction processing procedure of the third memory 18 together with the absolute time information of the disk corresponding thereto, and the disk is standardized so as to be able to cope with this. Is also good.

(8) Instead of reproducing only music information at the reproduction time, audio information such as "What time is it?" In this case, the audio information is preliminarily stored in the disc, or a separate audio information reproducing apparatus for reproducing the audio information corresponding to the reproduction time is provided. It may be composed or selected and output.

(9) As an identification signal to be recorded on the disc, an identification signal for distinguishing between an adult and a child may be recorded.

[0052]

As described above, according to the optical information storage medium and the optical information reproducing apparatus of the present invention, a music clock function can be added, and the reproduced music can be changed according to the season and time zone. It will be appropriate.

[Brief description of the drawings]

FIG. 1 is a block circuit diagram of a reproducing apparatus capable of reproducing a plurality of modes.

FIG. 2 is a flowchart illustrating a processing procedure of a central processing unit (CPU) of the playback device.

FIG. 3 is a diagram illustrating a symbol format of a CD according to an embodiment of the present invention.

FIG. 4 is a diagram showing TOC information of a CD.

FIG. 5 is a block diagram of a sub-coding of a CD.

FIG. 6 is a diagram illustrating a standard format of R to W channels and a format of mode 7 of subcoding of a CD.

FIG. 7 is a diagram illustrating a standard format of R to W channels and a format of mode 7 of CD subcoding.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Optical recording disk 2 Motor 3 Pickup 4 Access circuit 5 CPU 6 Reproduction circuit 13 Memory 17 Memory 18 Memory 21 Power supply

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Naozo Otsuki 2-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.

Claims (6)

[Claims] 1. An optical information storage medium in which information that is optically read is recorded on an information track, wherein the information track has a main information recording area in which a plurality of pieces of main information such as music information are recorded. A reproduction time designation information for designating a reproduction time of the main information; and a TOC information recording area in which address information necessary for cueing the main information is recorded. The main information is arranged at a position to be reproduced prior to the reproduction of the main information recorded in the area, and one main information is selected from a plurality of the main information based on the reproduction time designation information and the address information. An optical information storage medium, characterized in that: 2. The optical information storage medium according to claim 1, wherein reproduction time specification information for specifying a reproduction season of the main information is recorded in the TOC information recording area, and based on the reproduction season specification information, An optical information storage medium, wherein one main information is selected from a plurality of the main information. 3. The optical information storage medium according to claim 1, wherein the TOC information recording area indicates that the optical information storage medium is used for a specific purpose. Wherein the optical information storage medium is identified on the basis of the use information. 4. An optical information reproducing apparatus for selecting and reproducing one piece of main information from a plurality of pieces of main information recorded on an optical information storage medium, wherein the optical information storage medium includes an optical information storage medium. Information to be read is recorded on an information track, the information track has a main information recording area in which a plurality of pieces of main information such as music information are recorded, and a reproduction time designation for designating a reproduction time of the main information. And a TOC information recording area in which information and address information necessary for locating the main information are recorded. The TOC information recording area is reproduced prior to reproduction of the main information recorded in the main information recording area. The optical information reproducing apparatus is provided with a main information selecting means for selecting the main information to be reproduced based on a comparison result between a current time and the reproduction time designation information and the address information. , Optical information reproducing apparatus characterized by comprising a. 5. The optical information reproducing apparatus according to claim 4, wherein said TOC information recording area of said optical information storage medium records reproduction season designation information for designating a reproduction season of said main information. The optical information reproducing apparatus, wherein the main information selecting means selects the main information to be reproduced based on a comparison result between a current season and the reproduction season designation information and the address information. 6. The optical information reproducing apparatus according to claim 4, wherein the TOC information recording area of the optical information storage medium has application information indicating an application of the optical information storage medium. Recorded, the optical information reproducing device, based on the application information,
An optical information reproducing apparatus, comprising: identification means for identifying the optical information storage medium.