JPH0550585U - Optical disc recording / reproducing apparatus - Google Patents

Abstract

(57) [Summary] [Purpose] A silent section between songs is created by the same rec mute function as a cassette deck. [Structure] When the Rec Mute key is pressed, in S1,
It is determined whether or not the state before the interruption is recording, and if it is being recorded, the process proceeds to S2, the track number and the index number are left as they are, and only the audio recording is muted and recorded for several seconds, and then the rec pause state is set. .. If not, the process proceeds to S3, and if it is in the stop state or during the rec pause, the process proceeds to S4, otherwise returns to the address before the interruption. In S4, it is determined whether or not a silent part is recorded after the last track. If the silent part is recorded, the address returns to the address before the interruption, and if the silent part is not recorded, the process proceeds to S6. In S6, the track number is incremented, the index number is set to 00, and the silent portion is recorded.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a WO disk (single write-once write-once optical disk) recording / reproducing apparatus, and more particularly to an optical disk recording / reproducing apparatus capable of arbitrarily producing a silent portion during recording of audio data.

[0002]

[Prior Art]

 When a song or the like is recorded on the WO disc, a track number and an index number obtained by subdividing the track number are provided for each recording, and these are recorded as subcodes in the program area of the WO disc together with the voice data. At the end of each recording, recording information such as the recording start time and recording end time of each track number is recorded in the program memory area of the disc.

When the recording on the WO disk is completed, a program corresponding to the TOC (table of contents) of the CD is created from the recording in the program memory area.

[0004] Also, in a normal CD, a silent song space is created at an index number 00, but when this is created by a conventional WO disk recording device, the REC POSE is pressed during recording to create an index number 00. And silence will be recorded for a few seconds to pause, and then the recording start key will be pressed to record index numbers 01 and below.

In this case, there is no problem if recording is continued after the pause, but when the disk is taken out from the device as it is, the index number 00 part is not recorded in the program memory area and the index is recorded as the last recording time. The time immediately before the number 00 and the silent data is recorded is recorded in the program area.

The next time such a disc is recorded, silent data is recorded at the searched recording start position, which causes a problem.

[0007]

[Problems to be solved by the device]

 The present invention has been made in view of the above points, and an object thereof is to provide an optical disk recording / reproducing apparatus with a rec mute function similar to that of a cassette deck without causing the above inconvenience. ..

[0008]

[Means for Solving the Problems]

 The optical disk recording / reproducing apparatus of the present invention is an optical disk recording / reproducing apparatus for recording recording information for each track in a program memory area of an optical disk. The track number of the code is incremented, the track number incremented as a subcode and the index number 00 on the optical disc are recorded as voice data, and silent data is recorded for a few seconds and then paused to record during optical disc recording or recording. If you press the mute key, silent data will be recorded for several seconds without changing the track number and index number, and then paused.When loading an optical disc during recording, the silent data will be recorded after the final track number recording area. ing If silent data examines whether is recorded is obtained by configured so as to prohibit recording of the silent data.

[0009]

[Action]

 According to the optical disc recording / reproducing apparatus of the present invention, when the REC MUTE key is pressed when the optical disc is stopped, the track number and index number 00 incremented as subcodes on the optical disc and silent data as audio data are recorded for several seconds and then paused. Therefore, when the recording start key is pressed continuously, the index numbers 01 and below are recorded, and when recording is stopped, the record information of that track number is recorded in the program memory area.

When the disc is taken out of the apparatus in the paused state, the silent recording end position is not recorded in the program memory area, but when the optical disc is loaded next, there is no sound after the final track number recording section. Since it is checked whether or not the data is recorded, the recording end position of the silent data is detected and the next recording is performed from that position.

At this time, even if the REC MUTE key is pressed, the recording of the silent data is prohibited, so that the silent data is not repeatedly recorded.

If the REC MUTE key is pressed during recording on the optical disc, the EFM signal of the silent data is recorded for several seconds without changing the track number and the index number, and the pause occurs. When pressed, the index number is recorded continuously to the previous number, and when the recording is stopped, the record information of the track number is recorded in the program memory area.

When the disc is ejected from the device in the paused state, the silent recording end position is recorded in the program memory area, and the next recording is performed after the silent data. It will not be recorded again.

[0014]

【Example】

 An embodiment of this invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the structure of a WO (Write Once) disk recording / reproducing apparatus according to an embodiment of the present invention. In the figure, 1 is a WO disk, which is placed on the tray 2 and is moved above the spindle motor 5 by the rotation of the loading motor 3 controlled by the microcomputer 15 and fixed to the rotation shaft of the spindle motor 5. It is clamped on the turntable.

The spindle motor 5 rotates the WO disk 1, and the focus error signal (FE) and the tracking error signal (TE) are input to the servo circuit 14 from the light receiving element of the optical pickup 6. The servo circuit 14 generates a tracking coil supply current (TS) from the tracking error signal and also extracts a wobble signal.

Further, the servo circuit 14 generates a focusing coil supply current (FS) from the focus error signal. The laser spot tracks the pre-groove of the waveform when the above current is applied to the tracking coil of the actuator of the optical pickup 6, and the focus of the laser spot is adjusted to the signal surface of the WO disk by the current applied to the focusing coil. ..

A wobble signal having the same period as the pre-groove waveform is input to the ATIP decoder 7, an ATIP (absolute time) signal is demodulated and output to the microcomputer 15. With this ATIP, the microcomputer 15 recognizes the position of the laser spot on the WO disk.

Reference numeral 8 is a linear motor that sends the optical pickup 6 in the radial direction of the WO disk, and has a sensor coil that is driven by a current (LM) generated from the DC component of the tracking error signal and has a speed detection sensor coil. (SC) is fed back to the servo circuit 14.

The wobble signal also indicates the linear velocity of the WO disk, and the servo circuit 14 controls the current of the spindle motor 5 on the basis of this signal to perform CLV (constant linear velocity) control.

A current is supplied to the laser diode of the optical pickup 6 by a laser diode driver 9, and the current is modulated by the output of the EFM encoder 11, and the laser light emitted by the laser diode corresponds to the EFM signal on the WO disk. Form pit rows.

The EFM encoder 11 receives a digital input obtained by converting the audio digital input (D) of the input terminal 10 or the analog input R channel (R) and L channel (L) by an AD converter (A / D). It is selected by a switch, input, and modulated into an E FM signal. At that time, the signal input from the microcomputer 15 is incorporated into the subcode of the EFM signal. The EFM signal modulates the output current of the laser diode driver 9 as described above.

The microcomputer 15 has a built-in ROM and RAM and controls the entire apparatus. In addition, a signal is input from the keyboard 16 and further a signal is output to the display 17 to display the operating state of the device. The keyboard 16 includes a recording start key, a recording stop key, and a recording mute key.

Although the recording operation of the WO disc has been described above, when the signal recorded on the WO disc is reproduced, the same operation as that of the CD player is performed. At that time, the laser diode driver 9 outputs a constant current, and the light receiving element of the optical pickup 6 obtains an RF signal, a tracking error signal (TE) and a focus error signal (FE) from the reflected light from the pit train.

The RF signal is amplified and shaped by an RF amplifier (RF), and is input to the EFM decoder 12 to demodulate the audio digital signal and subcode. The audio digital signal is amplified and waveform-shaped by the amplification / waveform shaping circuit (DO), output from the D terminal of the output terminal 13, processed by the digital filter (DF), and then the DA converter (D / A). ) Is converted into an analog signal, further amplified by an amplifier (AO), and output to the analog terminals R and L of the output terminal 13. The demodulated subcode is input to the microcomputer 15.

The RF signal is also input to the RF signal detection circuit 18, and the RF signal detection circuit 18 outputs a signal indicating the presence or absence of an input signal to the microcomputer 15.

Next, with reference to FIG. 2 and FIG. 3, the operation of the recmute function of the WO disc recording / reproducing apparatus and the operation after loading the disc will be described. FIG. 2 shows the operation after disk loading. When the disc loading operation is completed, step S1 is executed.

In step S1, it is checked whether or not there is lead-in data on the disc, and if it is determined that there is lead-in data, it means that the disc is a CD or a WO disc that has been recorded. Store in memory and finish this routine.

If it is determined in step S1 that there is no lead-in data, it means that the WO disk is unrecorded or is in the process of recording, so the process proceeds to step S3 to read the recorded contents of the program memory.

Next, in step S4, the recording end position recorded in the program memory is searched, and the process proceeds to step S5. In step S5, it is checked whether or not the RF signal is output by reproducing after the searched place. If the RF signal is output, the process proceeds to step S8, and if the RF signal is not output, the process proceeds to step S6. ..

In step S6, it is determined whether or not a predetermined time has elapsed, and step S5 is repeated until the predetermined period elapses, and when the predetermined period elapses, the process proceeds to step S7. In step S7, the fact that no silence is recorded after the last track recording end position is stored in the memory of the micro computer, and this routine is ended.

In step S8, it is determined whether or not the track number recorded after the location searched in step S4 is the next number of the last track number recorded in the program memory, and it is the next number. If so, the process proceeds to step S9. If not, there is an error, and error processing is performed at step S13.

In step S9, it is determined whether or not the index number is 00, and if the index number is 00, the process proceeds to step S10. If not, the power is turned off during recording and the program area An error such as the end of the recording has occurred without performing the recording, and the error processing is performed in step S13.

In step S10, it is checked whether or not the RF signal is output by reproducing after the searched place. If the RF signal is output, step S8 is repeated, and when the RF signal is not output, step S11 is performed. Move to.

In step S11, the position information at which the RF signal ends is stored in the memory of the microcomputer, and the process proceeds to step S12. In step S12, the fact that silence is recorded after the end position of the last track recording is stored in the memory of the microcomputer and this routine is ended.

In the error processing in step S13, the recording after the recording end position recorded in the program area is reproduced until the RF signal disappears, and the recorded information is recorded in the program memory area of the disc. It is stored in the memory of the computer, and when the last record is silent data, the fact that silence is recorded at the last recording position is stored in the memory of the microcomputer and this routine is terminated.

In this way, when the routine after the disc loading is completed, the information necessary for starting the recording or the reproduction is stored in the memory of the microcomputer, and then the recording, the reproduction or the recording mute is performed. It becomes possible to operate.

FIG. 3 shows the REC MUTE function operation. When the REC MUTE key is pressed, the program address being executed is stored and step S1 is executed. In step S1, it is determined whether or not the state before interruption is recording. If recording is in progress, the process proceeds to step S2, and if not, the process proceeds to step S3.

In step S2, only the audio recording is muted and recorded for several seconds while keeping the track number and the index number as they are, and then the record pause state is returned to the address before interruption.

In step S3, it is determined whether or not the state before the interruption is the stop state. If the state is the stop state, the process proceeds to step S4, and if not, the process proceeds to step S5.

In step S5, it is determined whether or not the state before the interruption is the REC PAUSE. If the state is the REC PAUSE, the process proceeds to step S4. If not, the process returns to the address before the interruption.

In step S4, it is judged from the contents stored in the memory by the routine after the disc loading shown in FIG. 2 whether or not the silent portion is recorded after the last track. If the silent portion is recorded, Returning to the address before the interruption, if no silent portion is recorded, the process proceeds to step S6.

In step S6, the track number is incremented, the index number is set to 00, a silent portion is recorded for several seconds, and then a rec pause state is set to return to the address before the interruption.

In this way, it is possible to arbitrarily create a silent portion between different tracks or in the middle of the same track, and it is possible to prevent overlapping recording at the same location due to an operation error.

[0044]

[Effect of the device]

 According to the optical disk recording / reproducing apparatus of the present invention, a silent portion between songs can be created by a rec mute function similar to a cassette deck, and double recording is surely prevented.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a WO disk recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation after disc loading in the WO disc recording / reproducing apparatus.

FIG. 3 is a flowchart showing a rec mute function operation in the WO disc recording / reproducing apparatus.

[Explanation of symbols]

 1 CD-WO Disc 2 Tray 3 Loading Motor 5 Spindle Motor 6 Optical Pickup 7 ATIP Decoder 8 Linear Motor 9 Laser Diode Driver 10 Input Terminal 11 EFM Encoder 12 EFM Decoder 13 Output Terminal 14 Servo Circuit 15 Microcomputer 16 Keyboard 17 Display 18 RF Signal detection circuit

Claims (1)

[Scope of utility model registration request] 1. A track number of a subcode recorded on an optical disc when an optical disc recording / reproducing apparatus for recording recording information for each track in a program memory area of the optical disc is pressed while the optical disc is stopped or during a rec pause. , The track number and index number 00, which are incremented as subcodes on the optical disc, are recorded for a few seconds as silence data, and paused after recording the optical disc. After recording the silent data for a few seconds without changing it, pause and check if the silent data is recorded after the final track number recording part when the optical disc in the middle of recording is loaded. Optical disk recording / reproducing apparatus configured to prohibit recording of the silent data.