JPS6320791A - Rehearsal method for program recording - Google Patents

Abstract

PURPOSE:To prevent program recording to a recorded track by comparing a recording end track address with a recording start address of a program recording track group to display double recording and then detecting the presence or absence of a RF reproduction signal received from a main recording track group. CONSTITUTION:A CPU 40 of a system controller performs process control in response to a program of a ROM 44 and rearranges recording start addresses in the order of smaller values for a track group which performs the program recording in response to a command received via a remote control sensor 54 set via an interface 46 or an I/O 49. Then the end address of an unrecorded part of the minimum start address in compared with the next smaller start address. Thus a fact that the double recording is partially carried out is displayed on a display device 51 when the start address is larger than the end address. The same action is repeated for each track group. Then a recorded state is decided according to the presence or absence of a reproduction RF signal passed through a various type signal detector 56 between the start and end addresses where the double recording is not carried out. Thus the program recording free from the double recording that erases the recorded tracks is carried out with these rehearsals.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a rehearsal method for program recording, and particularly to a rehearsal method for program recording, in which information signals are recorded in a predetermined order in a predetermined plurality of unrecorded track groups, prior to so-called program recording. , relates to a rehearsal method for confirming that there are no recorded tracks in the plurality of track groups.

Conventional technical information recording discs (especially video discs) have a recording group of 1
For example, in many discs, information signals are recorded continuously from the inner circumferential position to the outer circumferential direction, but some recordable information recording discs have their recording areas divided into multiple sections, each with 11 records. For some reason, such as setting to record the information signal of type 0 field (mainly video signal) assigned in advance to each area, the surface recording tracks are not continuous, and the surface recording track group and the unrecorded track group are separated. There are also cases in which there are alternating

If you wish to perform recording in any mode later on such a randomly recorded information recording disk for a length of ff which cannot be recorded using only one group of unrecorded tracks in which multiple unrecorded tracks are continuous, , video signals must be recorded on a plurality of unrecorded track groups located at discrete intervals. In addition, when the video signal information includes images that are particularly desired to be viewed at speed A or images that are desired to be viewed frame-by-frame, such as image information showing a flower opening, certain unrecorded track groups may In some cases, it may be desired to record in various modes such as interval mode. Furthermore, the above-mentioned recording is not necessarily carried out sequentially from the group of unrecorded tracks on the inner circumferential side, but may be desired to be carried out in a preset order.

For this reason, for example, by operating a remote control key, multiple unrecorded track sections (unrecorded track group) can be set, and information signals from the video monitor can be continuously transmitted to them in the set order in any mode. It is desirable to be able to perform program recording that can be recorded in automatic fishing.

On the other hand, if a new recording is made on the surface recording track on the information recording disk mentioned above (so-called double recording), the previously recorded information will be erased. Double recording shall not be made on double recording tracks.

Therefore, the present applicant previously proposed in Japanese Patent Application No. 61-94641 to accurately distinguish between unrecorded tracks and surface recorded tracks.
We have proposed a double recording prevention method for information recording media that can reliably prevent information signals from being recorded on surface recording tracks.

This double recording prevention method for an information recording medium of the present applicant detects an unrecorded 1-rack at a desired recording start address, detects the first recorded track on the surface after the unrecorded track, and detects the recorded track on the first surface after the unrecorded track. Confirm the address by reproducing the address signal recorded on the surface recording track or its guide track, and after starting recording the information signal for the unrecorded trough after the unrecorded track of the desired recording start address, start the above-mentioned first address. The recording of the information signal is forcibly stopped at the unrecorded track at the address immediately before the surface recording track.

Problems to be Solved by the Invention However, when attempting to record the program described above, the user creates the program while referring to the table of unrecorded tracks on the information recording disk to be used, but due to some accident (for example, programming It is possible that an attempt is made to record on a surface recording track due to a mistake (mistake, wrong tongue).

In such a case, according to the double recording prevention method proposed by the present applicant, recording of the information signal is forcibly stopped, so that the program recording ends midway. In program recording, the desired purpose can only be achieved if the record is completed to the end.
It will not happen again.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a program recording rehearsal method that checks to ensure that the program recording to be executed will not be recorded on the surface recording track when actually recording the program. do.

Means for Solving the Problems In the program recording river reel method of the present invention, before performing program recording, the recording end 1 to rack addresses of a group of unrecorded tracks with a small recording start track address and the next recording start track are recorded. The program compares the recording start track address of a group of unrecorded tracks with small addresses and detects that the recording end track address is smaller than the recording start track address. In addition to detecting whether or not each of the unrecorded track groups required for program recording consists of only unrecorded tracks, the present invention is designed to detect.

When recording an action program, there are a plurality of unrecorded track groups on which information signals can be continuously recorded on an information recording medium formed by a mixture of surface recorded tracks and unrecorded tracks. A recording start track address and a recording end address are respectively input to each unrecorded track group, and then information signals are automatically recorded in a preset order.

Before this program recording is performed, the present invention records the recording of the unrecorded track group whose recording start track address is the next smaller than the necessary unrecorded I-rack group recording end I-rack address for which program recording is to be performed. It is detected for all necessary unrecorded track groups whether the address is smaller than the start l.rack address, and whether or not each unrecorded track group consists of only unrecorded tracks is determined based on the presence or absence of a reproduction RF signal. Detect.

Embodiment FIGS. 1A and 1B each show a flowchart of an embodiment of the method of the present invention. Figure 1 (A).

The operation according to the flowchart shown in FIG. 2 is performed by the system controller 1 in the block diagram of the recording/reproducing apparatus shown in FIG. The system controller 1 has a configuration as shown in FIG.

First, referring to FIGS. 2 and 3, we will explain the outline of the recording and reproducing device to which the present invention is applied. First, the recording device can be set to any one of the VTR and television camera by switching switches 2 and 3. The video signal and audio signal taken out from the device are selected, passed through a video processor 4 and an audio processor 5 separately, and supplied to a modulator 6, where they are changed into a predetermined signal form and then left. D
The light is applied to a laser diode (LD) via a driver 7, and its light intensity is changed according to the information.

Light from the LD is irradiated onto an optical disk (not shown), which is an example of an information recording medium, to perform recording.

This optical disc includes a synchronization signal generator 10 and a phase comparator 311.
, an equalizer 12, and a driver 13, and are synchronously rotated by a disk motor 14 to which signals are supplied.

Further, the LD driver 7 and the head amplifier 8 are mounted on an optical base 9, and the optical base 9 is moved in a fixed direction by a step motor 31 during recording.

Next, during playback, the playback RF signal obtained by detecting the change in the light intensity of the reflected light from the optical disc is transmitted to the head amplifier 8 and the RF
The signal is supplied through an amplifier 15 to an audio demodulator 16, a Y demodulator 17, and a C demodulator 18, respectively, where the audio signal, luminance signal, and carrier color signal are demodulated, respectively. The reproduced luminance signal is supplied together with the reproduced carrier color signal to the video processor 19, where it is output as a reproduced color video signal in a predetermined signal format, while the synchronization signal is separated and extracted by the 5YNC separator 20 and sent to the phase comparator. 11.

Further, the reproduced RF signal is supplied to the RF detection circuit 21, detected there, and then supplied to the system controller 1. Furthermore, the signal from the head amplifier 8 obtained based on one sub-light beam other than the main light beam for recording and reproducing information signals is processed by a focus servo circuit consisting of an equalizer 22, a driver 23, and a pull-in circuit 24. A light beam is focused and converged onto an optical disk. Lead-in circuit 2
li is a circuit that operates when the focus servo circuit is pulled in, and the focus servo is I'ff! When creating a loop, the driver 23 is excited at a predetermined period, so (
The peak of the output of the head amplifier 8 at this time is detected, the vibration is stopped, and the 1-nervo is made into a closed loop.

Further, the output signal of the head amplifier 8 is supplied to a tracking servo circuit consisting of an equalizer 25, a driver 26, and a digital amplifier circuit 27, where it is converted into a tracking error signal 7 and supplied to the optical base 9. The normal circuit and the above-mentioned normal noise control circuit operate not only during playback but also during recording.

Further, the output signal of the driver 26 is supplied to a step motor 31 through a radial processing circuit 28, a counter 29, and a driver 30, respectively, to control its operation. The radial processing circuit 28 operates when the output voltage of the driver 21, which is the driving voltage of the rotating mirror, reaches a predetermined level or higher.
The step motor 31 is driven to move the entire optical base 9 by 1 gI in the radial direction of the optical disk. This allows the rotating mirror to always rotate around the neutral position! IJ controlled.

The drawer part 32 lowers the disc tray based on signals obtained by detecting that the disc tray has been touched by various signal detectors 34, and clamps the optical disc on the turntable or vice versa. The various signal detectors 34 detect that the eject switch is turned on, and the resulting signal causes the disc tray to move upwards and the disc to be ejected. Further, various display devices 33 display information such as the recording/reproducing nail setting mode.

The regulator 38 supplies ri current power supply voltage to each part of the device. System controller 1 is external pulse input section 3
5. One word is also supplied from the interface 1-36 and the sensor V-37.

The system controller 1 has a central processing unit (CPU) 40 as shown in FIG.
) 43, read-only memory (ROM) 44, counter timer circuit (CTC) 45, interface 46 corresponding to the interface 36, real-time clock 47, battery backup 4B,
110 and 49, respectively. Pulse generator 42
generates the system reset pulse and system clock pulse. The CTC 45 generates interrupts using a timer and a counter. The real-time clock 47 generates a calendar clock at 9:09:02 on January 9, 2017.

Further, the 110 part 49 corresponds to a drawer control 50 for controlling the drawer part 32, a display 351 constituting various indicators 33, a SW'A detection element 52, a controller 53 for controlling the step motor 31, and a sensor 37. It is connected to a remote control sensor 54 corresponding to a remote control sensor 54 , a control 55 for each item, and various signal detectors 56 corresponding to various signal detection 334 .

Here, in this embodiment, for convenience of explanation, the optical disc rotated synchronously by the disc motor 14 has a guide track (pre-pit) formed thereon, similar to the disc previously proposed by the present applicant in Japanese Patent Application No. 141696/1983. and
Further, as previously proposed by the present applicant in Japanese Patent Application No. 60-230609, a disk in which address signals are recorded between pre-pits will be explained as an example.

That is, on the recording surface of the optical disc, a guide track is formed as a row of pits arranged in every other region obtained by dividing one circumference of the optical disc at equal rotation angle intervals, Of the 62 adjacent guide tracks, the pits (pre-pits) of one guide track and the pits (pre-pits) of the other guide track are formed so as to be different in the radial direction, and the information signal recording track is is formed in the area between 62 adjacent guide tracks.

To further explain this with reference to FIG. 4, the two-dot chain line is the center line of the information signal recording rack 1-rack formed on a C-type optical disk which is rotated at a constant rotational speed. In addition, guide track pre-pits 60 are formed every 1H below the chain double-dashed line (inner circumferential side), and guide track pre-pits 61 are formed above the double-dashed line (on the outer circumferential side). It is recorded every 1 hour. Moreover, the pre-pits 60 and 61 are formed at different positions in the track width direction perpendicular to the scanning direction.

On the other hand, 62-65 marked with an X in FIG. and 63 are arranged, and address signal recording portions 64 and 65 are arranged between adjacent pre-pits 61 in the scanning direction of the outer guide track. That is, in order to prevent an error in the address signal, the same address information is recorded twice per revolution of the guide track in advance in the disc manufacturing apparatus. Each address signal recorded in the address signal recording portions 62 to 65 is modulated using a predetermined modulation method (for example, PE (PhaseEn(oding)).
)) is recorded after being modulated.

When recording information signals, address signal recording parts 62 to 65
is reproduced by the sub-light beam, and the pulse generated from the frame pulse and the pulse that rises at the edge of the reproduced address signal in the address signal recording portion 64 that is reproduced first among them correspond to the phase difference. While the rotational phase of the disk motor 14 and the optical disk is controlled by the error voltage, the information signal is transmitted by the main light beam as indicated by the two-dot chain line ■ in Fig. 4.
2 fields per revolution (i.e. 1
frame). Note that the numbers in parentheses in FIG. 4 indicate the scanning line number of the composite video signal in the information signal to be recorded.

In the recording portions 62 and 63 (or 64 and 65) mentioned above, the track number of the information signal recording track shown by the two-dot chain line (■) in FIG. Since the address signal shown is recorded, the same frame address is reproduced twice in one rotation.

Next, regarding the operation of the embodiment of the present invention, FIG.
8), when an interface command is input via the remote control key (sensor 37) or interface 36 in FIG.
First, in step S1 of FIG. 1 (8), each step is rearranged in ascending order of recording start frame address (ie, recording start track address), and numbers SP<1) to SP (n) are assigned in descending order.

Here, the above steps indicate a group of unrecorded tracks on which recording is performed during program recording. As mentioned above, in order to record a program, the user creates a program while referring to the table of unrecorded tracks, but this program is not like a computer program, but the recording start track address ql and the recording start track address. It is created based on the input of the end track address and its execution order list.

The above-mentioned optical disc has a mixture of recorded edge tracks and unrecorded tracks, and among the plurality of unrecorded track groups, for example, the first edge track from the recording start track address "100" to the recording end track address "200" A group of unrecorded tracks, a second group of unrecorded tracks from a recording start track address "500" to a recording end track address "510", and a recording start track address "1000".
The first . Third. If we perform program recording in which recording is performed in the order of the second unrecorded track group and then the recording ends, the 5P ( 1), SP (2
> and SP<3>.

After that, the system controller 1 sets the value of the variable I to 1.
, after setting the value of variable ER to the first tyua of O (first
Step Sz) in Figure (A), the recording end track address 5P(1) END of the first unrecorded track group 5P(1) having the smallest recording start track address and the next smallest record 8 start track address. Recording start track address SP (
A comparison is made with 2>5TART, and it is determined whether the latter is larger than the former (step 83).
.

SP (2>5TART is greater than 5P(1)END), system controller 1 determines whether the value of variable 1 at that time is equal to the total number n of unrecorded tracks to be recorded. In step S4), the value of ■ is "1 pa, which is smaller than n (for example, 3 here), so the value of variable I is changed to the value obtained by adding "1 pa," and then the process in step S3 is performed. Return to step Ssn. In this way, the recording end track address 5P(1) of the unrecorded track group with the i-th smallest recording start track address is set.
, END, the recording start track address is (i +
1) Detection of whether the recording start track address of the smallest unrecorded track group is smaller than 5P(1+1)START is the total number n of unrecorded track groups to be recorded.
Follow all the steps.

Here, in the size comparison in step S3 above, SP
(I) If it is detected that END is equal to or higher than 5P (1+1) START, unrecorded track group SP<1> and 5P
This means that there is a partial overlap with (1+1), resulting in double recording. Therefore, in this case, the system controller 1 uses the track address (frame address) SP (I) END and SP (1+1) ST
The number of double recording frames is calculated by subtracting it from ART, and the number of double recording frames is displayed.
The execution order and recording end track address of (1) are displayed, the execution order of SP<1+1) and the recording start track address, etc. are displayed (step Ss).

After that, the system controller 1 changes the value of the variable ER to the value obtained by sidecarrying 1 pa as the new value of the variable ER (Step S7), and then proceeds to Step S4. When the total number n of recording track groups is compared in step S3, the system controller 1 determines whether the value of the variable ER is "O" (step Ss), and if the value of ER is not "0". Sometimes, since a double recording error has already occurred in the program, the process does not proceed to the next step and ends there (step S9).

On the other hand, when the value of ER is "O", there is no double recording error, so the system controller 1 next sets the value of variable I to the initial value "1" and sets the initial value of variable Ell) to "0". (step 5zo in FIG. 1 <8)), 51 is also set to the unrecorded track group 5 with the smaller recording start track address.
The pickup (optical base 9) is moved and searched to the recording start track of P(1) (step SI+ in the same example).

Next, the system controller 1 controls the unrecorded track group 5P (
1) recording end track address 5P(1) END and recording start track address 5P(1) START and (7)
Step 51 of Difference (7) (Calculate aJ <8 in Figure 1)
2) To detect the presence or absence of the reproduced R-do signal, step 31
3) If a reproduced RF signal is not obtained, the track M is judged to be an unrecorded track, and the pickup is jumped one track in the forward direction (transferred in a strong υ1 manner) (step 5I4 of the same). Determine whether the value of J is “0” or not, and
If it is not 0', the value obtained by decrementing the value of J by "1°" is set as the new value of variable J, and the process returns to step 813 (step 516).

In this way, in steps 813 to S's, high-speed reproduction is performed on all tracks of the first unrecorded track group 5P(1), and whether or not the reproduction consists of only unrecorded tracks is determined by the reproduced RF signal. Detection is performed based on the presence or absence, and when the detection is completed, the process moves to step S's. On the other hand, if a recorded track exists in the unrecorded track group 5P(1), a reproduced RF signal is detected in step S13. When program recording is started, double recording will be performed on the already recorded track, so the system controller 1 causes the display to display the execution order of the unrecorded track group, and also changes the value of the variable ER by °1'. ' is stored as the value of the new variable ER (see Figure 1 (B
) step 517).

If all of the tracks in the unrecorded track group 5P(1) are determined to be unrecorded tracks by high-speed playback, or if there is even one recorded track in the unrecorded tracks JtTSP(1), If it is determined that the variable I exists, the system controller 1 next sets the Ttl of the variable I (here I
= 1) is equal to the total number n of unrecorded track groups to be recorded (step 518). If not, there are unrecorded track groups for which the above-mentioned high-speed playback has not been performed yet, so the variable The value obtained by adding 1'' to the value of I is set as the new value of variable 1 (step S's), and the process returns to step Su.

In this way, for each of the remaining unrecorded track groups to be recorded after the second unrecorded track group 5P(2), each unrecorded track group is reproduced at high speed in steps Sn to Szs. It is detected whether or not all tracks are composed of unrecorded tracks. When this is completed, this rehearsal process 11p is ended (step S?O).

In this way, it is detected whether or not the unrecorded track group to which the program is to be recorded partially overlaps, and whether or not a recorded track exists in the unrecorded track group, prior to program recording. If there is some overlap or if a recorded track exists in a group of unrecorded tracks, the program recording can be stopped beforehand by displaying an error message on the display.

It should be noted that the present invention is not limited to the above-mentioned embodiment. For example, '2!1f shown in FIG. 1(B) is performed first, and then the process shown in FIG. 1(A) is performed later. Also good (
However, step S1 is executed first in this case as well).
Further, the address signal may be formed in a pit of the guide track or may be formed in a pregroove. Further, the pre-pit may not be formed.

Note that when the optical disc is a CLV type disc, the address signal is multiplexed and recorded on the recorded track, for example, within the vertical blanking period of the video signal, and the address signal is also recorded, for example, in the lead-in area, every rotation of the optical disc. has a value of "1"
An incrementing address signal is recorded.

Furthermore, the present invention can be applied not only to disks but also to recording media such as tapes. Furthermore, the recorded signal may be an information signal (for example, a digital signal such as digital data) other than a video signal.

Effects of the Invention As described above, according to the present invention, on an information recording medium in which recorded tracks and unrecorded tracks coexist, a recorded track is added to an unrecorded track group (unrecorded track section) on which a program is to be recorded. exists, or if the unrecorded tracks to be recorded partially overlap with each other, resulting in double recording, display this in advance to prevent program recording from actually starting. Moreover, since it is possible to know in advance whether or not program recording can actually be performed, it is possible to perform program recording without failure.

[Brief explanation of drawings]

1 (Δ) and (B) are flowcharts showing one embodiment of the method of the present invention, FIG. 2 is a block system diagram showing an example of a recording/reproducing apparatus to which the present invention can be applied, and FIG. FIG. 4 is a block system diagram showing an example of the system controller in the illustrated block system. FIG. 4 is a diagram for explaining an example of the recording position of the address signal on the information recording medium used in the present invention. 1... System controller, -21... RF detection circuit, 40... CPU (central processing unit), 81-S
20...step. Patent Applicant: TIATSUKU Co., Ltd./Guso 21 Figure 1 (A) Figure 1 Figure 4 Running J and V Town →

Claims (1)

[Claims] On an information recording medium formed by a mixture of recorded tracks and unrecorded tracks, there are multiple unrecorded track groups on which information signals can be continuously recorded, and each unrecorded track group has a required number and position. A program that automatically records information signals in a preset order by inputting a recording start track address and a recording end track address for each track group. The recording end track address of the group is compared in magnitude with the recording start track address of the unrecorded track group having the next smallest recording start track address, and it is detected that the recording end track address is smaller than the recording start track address. This is performed for all of the necessary unrecorded track groups, and while the pickup scanning the information recording medium is moved track by track for each of the necessary unrecorded track groups, the reproduced RF signal from the pickup is transmitted. A rehearsal method for program recording, characterized in that the presence or absence of a track is detected for each track, and it is detected whether the track consists only of unrecorded tracks on which no reproduced RF signal is detected.