JP2814568B2 - Recording and playback device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus for recording and reproducing an information signal supplied from an external device on a recording medium, and in particular, re-recording an information signal in a recorded area of the recording medium. The present invention relates to a recording / reproducing apparatus that repeatedly uses one recording medium.

B. Summary of the Invention The present invention re-records in a recorded area of a recording medium,
In a recording / reproducing apparatus that repeatedly uses one recording medium, the recording from the start point to the end point of the recording medium is detected by detecting that the recording medium has reached the end point during the recording operation of the information signal supplied from the outside. The time is discriminated by the discriminating means, and the operation of the recording / reproducing means is controlled based on the output of the discriminating means, and the information signal is recorded at an arbitrary position between the start point and the end point of the recording medium on which the information signal is recorded. Is recorded again.

2. Description of the Related Art Conventionally, a broadcasting station or the like has been disclosed in Japanese Patent Application Laid-Open No. Sho 62-146460, for example, in which a large number of tape cassettes are sequentially and automatically loaded into a video tape recorder for a long time. A so-called cart machine, which is a recording and reproducing system equipped with an automatic cassette loading device for performing continuous video reproduction, is used to broadcast, for example, a commercial program using the cart machine.

In general, a broadcasting system for directly broadcasting using the cart machine includes a plurality of tape cassettes (4) accommodated in a cassette accommodating section (41) as shown in FIG.
2) The video tape recorder (4)
(4) a cart machine (40) for sequentially and automatically loading the tape cassettes (42) sequentially and automatically at predetermined broadcast times, and a cart machine (40); The control device (45) controls a video tape recorder (46) for the purpose of backing up broadcast contents by the 40), so that the reproduction output by the cart machine (40) and the video tape recorder (46) for the backup are controlled. ) Is supplied to the transmission device (48) via the changeover switch (47).

Then, in the broadcasting system, prior to the actual broadcasting of the playback output by the cart machine (40), the playback output by the cart machine (40) is supplied to the backup video tape recorder (46) to the delivery unit (spot i.e. continuous regeneration block) is recorded on the tape, for example, as shown in FIG. 5, a plurality spots SP _1, SP ₂
...... SP _n is integrated into the tape (49) in advance. Then, the control device (45), for example, becomes the first actual broadcast time of the spot SP _1, advance the tape (49) keep rewinding the first spot SP ₁ position above, the cart machine (40) by playing the tape (49) from the first spot SP ₁ at the same time broadcast the start and in the first spot SP _1, the tape (49) above has been reproduced from the first is in the event of a failure or the like of the cart machine so as to broadcast the spots SP _1, prevented from being broadcast interrupted.

Tape for the backup (49), the recording area of the reproducing the first finished spot SP ₁ is not required, is registered as reusable location, the recording spot SP _n reaches the end position TE of the recording area The reusable place is checked from the start point position TS of the recording area, and the next spot SP _{n + 1} is unified into the reusable place. In this way,
The function of using one tape (49) for unifying each spot and backing up the playback is called a spot reel function.

D Problems to be Solved by the Invention As described above, in the direct broadcast system using the cart machine (40), a spot reel function for the purpose of backing up broadcast contents is used, and the tape length on the spot reel side is increased. By defining the TL as setting data in advance, the data is unified into one transmission unit, that is, every spot in order from the start point of the tape (49), and when the end point position TE of the recording area is reached, the reproduction is already performed on the start point position TS side. Control is performed to search for an unnecessary recording area that has already been used and use it for unification of the next spot. However, when the tape length of the spot reel tape (49) actually attached to the video tape recorder (46) for backup is shorter than the tape length TL defined in the setup, the recording area of the tape is reduced. The end of the tape is
There was a problem that normal operation could not be continued due to reaching TE.

Therefore, the present invention has been made in view of the above-described conventional problems,
In a direct broadcast system using a cart machine, the purpose is to ensure that the broadcast contents are backed up by the spot reel function and the normal operation of the system is ensured by the spot reel function. Recording from the start point to the end point of the recording medium for the spot reel Provided is a recording / reproducing apparatus having a novel configuration in which a time is automatically determined and an information signal is recorded again in a recorded area of the recording medium so that a spot reel function can be reliably performed. Things.

E Means for Solving the Problems In order to achieve the above object, a recording / reproducing apparatus according to the present invention records an information signal supplied from the outside on a recording medium, and records the information signal recorded on the recording medium. Recording / reproducing means for reproducing, detecting means for detecting that the recording medium has reached the end point during the recording operation, determining means for determining a recording time from a start point to an end point of the recording medium, and an output of the determining means. Control means for controlling the operation of the recording / reproducing means based on the recording medium. The discriminating means stores a start point position TS of a recording area as a recording start position A for a newly loaded recording medium, of calculating the recording end position B from the length of the sequence of information signals to be recorded on the recording area located at the recording end position B is preset within the record length TL _0, and recorded from the recording start position a End position When the recording operation is completed, the recording operation for recording the series of information signals is performed. When the recording operation is completed normally, the recording end position B is stored as a new recording start position A. performs a recording operation for the next set of information signals, repeated recording operation in advance in the set range of the recording length TL _0, when it reaches the end position TE of the recording medium during the recording operation, the previous printing operation the length from the recording end position B _n to the end position TE calculates the record length TL _R of the recording medium by adding to the recording end position B _n in,
The control means, calculated by controlling the operation of said reproducing means by using the record length TL _R, the information signal to any position between the end point from the start point of the recording medium in which the information signal is recorded again It is characterized in that it is recorded.

F action In the recording / reproducing apparatus according to the present invention, the recording / reproducing means records an externally supplied information signal on a recording medium,
The information signal recorded on the recording medium is reproduced. Also,
The determining means detects that the recording medium has reached the end point during the recording operation by the recording / reproducing means, and automatically determines the recording time from the start point to the end point of the recording medium. The control means controls the operation of the recording / reproducing means based on the discrimination output by the discriminating means, so that an arbitrary signal between the start point and the end point of the recording medium on which the information signal is recorded by the recording / reproducing means is provided. Control to record the information signal again at the position.

G. Embodiment Hereinafter, an embodiment of the recording / reproducing apparatus according to the present invention will be described in detail with reference to the drawings.

In the embodiment shown in the block diagram of FIG. 1, the present invention is applied to a broadcasting system for directly broadcasting using the cart machine shown in FIG. 4, and each spot supplied from a cart machine not shown. A video tape recorder (10) for back-up which sequentially records the video signals on the tape and reproduces the video numbers recorded on the tape, and a control device for controlling the operations of the cart machine and the video tape recorder (10) At (20), the recording / reproducing apparatus according to the present invention is configured.

In this embodiment, the video tape recorder (1
0) is a recording / reproducing section (11) for recording / reproducing a video signal to / from the tape, an end point detecting section (12) for detecting an end point of the tape, and a cassette for judging the presence or absence of a tape cassette containing the tape. The one provided with the presence / absence determination unit (13) and the like is used.

The control device (20) has a function of controlling unification processing in a spot reel function for backup of broadcast contents by the cart machine and the video tape recorder (10). As shown in FIG. 1, a recording start position A for managing the recording start position of the video tape recorder (10).
Change processing section (21), video tape recorder (10)
Calculation unit (22) for calculating a recording end position for determining the recording end position of the tape cassette, a tape length for managing the tape length of the tape cassette mounted on the video tape recorder (10)
TL change processing unit (23), video tape recorder (1
The discrimination processing unit (2) that performs the discrimination processing necessary for the operation control
4) A control unit (25) that controls the various processing units (21) to (24) and controls the operation of the cart machine and the video tape recorder (10). Further, the control device (20) includes a control data input device (27) using a keyboard or the like and a storage device (28) such as a random access memory.

The control device (20) controls the unification processing in the spot reel function for the purpose of backing up broadcast contents by the cart machine and the video tape recorder (10) as shown in the flowchart of FIG. It is supposed to do it.

Here, as shown in FIG. 3, a tape cassette incorporating a tape (15) for a spot reel having an actual tape length TL _R shorter than a preset tape length TL ₀ is the video tape recorder ( The control of the unification processing by the control device (20) will be described by taking the case where the control device (20) is loaded as an example.

First, in the first step S _1, and stores the recording start position A of the spot with respect to the tape (15) in the storage device (28).

Note that the control unit (20) starts control of the 1 Honka processing from a state in which rewinding to the beginning position TS recording area the tape (15), at the first step S _1, the video as the recording start position a ₁ to the tape (15) by a tape recorder (10), stores the start position TS of the recording area of the tape (15) in the storage device (28).

In the second step S _2, the recording end position B from the length of the spot to be recorded on the tape to calculate at the calculation processing unit (22). That is, when performing the first spot SP ₁ recording, recording end position from the length of the first spot SP ₁ B
₁ is calculated by the calculation processing section (22).

The third step S _3, the tape length previously set TL ₀
And by comparing the recording end position B calculated by the second step S _2, performs B <whether the determination processing is TL ₀ at the judgment processing section (24).

Or above when the third result by the discrimination processing in step S ₃ is YES, that B <LT ₀ shifts to the fourth step S ₄ to the recording end position B from the recording start position A is recordable area Is performed, and the result of the determination is YE
Moves to a fifth step S ₅ if S i.e. recordable area, and controls the operation of the cart machine and the video tape recorder (10), perform the recording spot, the first said spot SP ₁ Record on tape (15).

In the next sixth step S _6, performs the fifth judged whether or not the transaction record at step S ₅ has been normally performed by the determination processing section (24).

If the result of the determination processing in the sixth step S ₆ is YES, that is, the recording of the first spots SP ₁ is successful, moves to a seventh step S ₇ follows the second step S ₂
The recording end position B ₁ calculated in the above is replaced with a new recording start position A ₂
The changing process for the after performing at the change processing unit (21), returns to the first step S _1.

Then, the first step S ₁ in the seventh step S ₇
Storing the updated new recording start position A ₂ by a second which will be recorded next to the second step S ₂ in the tape (15)
Calculate the recording end position B ₂ from the length of the spot SP _2. Then, at the third step S ₃ and the fourth step S _4,
Recording area capable of second recording all spots SP ₂ it is determined whether or not remaining on the tape (15) to be recorded, when the recording area on the tape (15) is remained the second spot in the fifth step S ₅
Run the recording operation of the SP _2, check the records in the sixth step S _6, after performing the process of changing the recording start position A at the seventh step S _7, in the first step S ₁ Return.

Hereinafter, by repeating the process from the first step S ₁ to the seventh step S _7, sequentially performed recordable n pieces of the spots of the recording in the above-mentioned range preset tape length TL _0.

When the first n + 1 recording spot SP _{n + 1} to be executed by the fifth step S _5, the determination result by the discrimination processing in the sixth step S ₆ is NO, that is, the recording is not performed normally, proceeds to an eighth step S _8.

The eighth step S ₈ is reached the end position TE of the recording area of the tape (15) during the execution of the recording operation in the fifth step S _5, so no longer can do more recording operation The video tape recorder (10) determines whether or not the recording operation is not performed normally for any other reason. Based on the detection output by the end point detection unit (12) of the video tape recorder (10), the tape (15) is determined. ) Is performed to determine whether or not the end position TE has been reached.

Then, the determination result of the determination processing in the eighth step S ₈ is
YES, that actual tape length TL _R is shorter during the recording operation the tape than the tape length TL ₀ which has been set in advance (1
When the recording operation for reaching the end position of TE 5) is interrupted, the process proceeds to a ninth step S ₉ follows. Further, in the case where the recording operation is not performed very cause judgment processing determination result is other than NO, that said eighth step S _8, is not (NG) to continue the unification process As a result, the control operation of the unification processing ends.

In the ninth step S _9, it is calculated by adding the recording end position B _n of the n spots SP _n previous to the recording end position B _n the distance C to the end point position TE of the tape (15) the tape length of changing process for the actual tape length TL _R a new tape length TL of the tape (15) after performing at the change processing unit (23), returns to the first step S ₁ .

Then, for the first n + 1 spot SP _{n + 1,} and stores the recording start position A _{n + 1} again at the first step S _1, to calculate the recording end position B _{n + 1} at the second step S ₂ Te, performs determination processing of the third step S _3.

In the third step S _3, and comparing the eighth step change in S ₈ was been recorded end position calculated at the new tape length TL and the second step S ₂ B _{n + 1,} A process of determining whether or not B _{n + 1} <TL is performed. The (n + 1) th spot SP
_n discrimination processing result in the third step S ₃ for _{+ 1,} if the actual tape length TL _R is short than the tape length TL ₀ which has been set in advance, actually the first n + 1 spot SP _{n Even if} the recording area for recording all _{+ 1s} does not remain at the end of the tape, the first discrimination result
It becomes YES, but the eighth second time determination result by using the automatically modified new tape length TL _R at step S ₈ is set to NO. That is, the n-th
It is determined in the second determination process that the recording area enough to record one spot SP _{n + 1} does not remain at the end of the tape (15).

Then, the control device (20) executes the third step S ₃
If the decision result is NO due, proceeds to a tenth step S _10, repeats the determination process of searching a rewritable area of the already-reproduction processing from the start point side of the tape (15) until it finds the re-recordable area conducted, proceeds to the eleventh step S ₁₁ finds a said re-recordable area.

In the eleventh step S _11, performs change processing of the starting point position A _S a new recording start position A of the re-recordable area found at the tenth step S ₁₀ by the change processing unit (21) from returning to the first step S _1.

Thereafter, the first step S ₁ from the seventh step S ₇ described above, the
10 step S repeated ₁₀ and the process of the eleventh step S _11, the actual tape length TL sequentially integrated recording process each spot can be recorded within the _R can be reliably performed.

The control device (20) removes the tape cassette from the video tape recorder (11) based on the detection output by the cassette presence / absence detection section (13) of the video tape recorder (11) and newly loads the tape cassette. Upon detection by the determination processing section (24) that, one of which was used to clear the tape length TL which is updated in the ninth step S ₉ described above, the tape length TL ₀ which is set in advance In the control state of the processing, the control operation shown in the flowchart of FIG. 2 is performed for a new tape cassette.

Further, the tape length TL ₀ which is set in advance in the case of changing the operation of the control data input unit (27),
When the current tape length TL ₀ is compared with the newly set tape length TL ₁ by the discrimination processing unit (24), and the new tape length TL ₁ is shorter than the current tape length TL ₀ Only, the tape length TL ₀ is allowed to be changed, and when the new tape length TL ₁ is longer than the current tape length TL ₀ , the tape length TL ₀ is used as it is. .

In the above embodiment, the video tape recorder (1
0), the respective spots are integrally recorded on the tape (15). For example, an optical disc / recording / reproducing apparatus using a magneto-optical disc capable of recording / reproducing information as a recording medium is replaced with the video tape recorder. It may be used instead of (10).

H Effects of the Invention In the recording / reproducing apparatus according to the present invention, the information signal supplied from the outside is recorded on the recording medium, and the discriminating means is recorded during the recording operation of the recording / reproducing means for reproducing the information signal recorded on the recording medium. Automatically determining the recording time from the start point to the end point of the recording medium, and controlling the operation of the recording / reproducing means based on the discrimination output of the discrimination means by the control means. The control operation for recording the information signal again in an arbitrary recorded area between the end point and the end point can be reliably performed.

Therefore, according to the present invention, the spot reel function can be reliably performed by applying the present invention to a direct broadcast system using a cart machine. Operation can be secured.

[Brief description of the drawings]

FIG. 1 is a block diagram functionally showing an essential configuration of an embodiment in which the present invention is applied to a direct broadcasting system using a cart machine. FIG. 2 is a flowchart showing the operation of a control device in the above embodiment. FIG. 3 is a schematic diagram showing recorded contents of a tape subjected to unification processing in the embodiment. FIG. 4 is a block diagram showing a configuration of a main part of a direct broadcasting system using a cart machine. FIG. 5 shows recorded contents of a tape which has been subjected to unification processing for explaining a spot reel function in the direct broadcasting system. FIG. (10) Video tape recorder (11) Recording / playback unit (12) End point detection unit (13) Cassette presence / absence detection circuit (20) Controller (21) Recording start position change Processing unit (22) Recording end position calculation processing unit (23) Tape length change processing unit (24) Discrimination processing unit (25) Control unit (28) Storage device

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-58-143477 (JP, A) JP-A-63-91889 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) G11B 27/024

Claims (1)

(57) [Claims] 1. A recording / reproducing means for recording an information signal supplied from the outside on a recording medium and reproducing the information signal recorded on the recording medium; and detecting that the recording medium has reached an end point during a recording operation. Detecting means for determining a recording time from a start point to an end point of the recording medium; andcontrol means for controlling an operation of the recording / reproducing means based on an output of the determining means. For a newly loaded recording medium, the start position TS of the recording area is stored as the recording start position A, and the recording end position B is calculated from the length of a series of information signals recorded in the recording area of the recording medium. is in its recording end position B is within a preset range of the recording length TL _0, and when the recording start position a to the recording end position B is recordable area, recording for recording the sequence of information signals Action And line, and stores when the recording operation has been successfully completed the recording end position B as a new recording start position A, performs a recording operation for the next set of information signals, recording length TL ₀ set in advance When the recording operation is repeated within the range of the recording operation and reaches the end position TE of the recording medium during the recording operation, the length from the recording end position _Bn in the previous recording operation to the end position TE is the recording end position. calculating the recording length TL _R of the recording medium by adding the B _n, the control means controls the operation of the recording and reproducing means by using the record length TL _R calculated, the information signal is recorded A recording / reproducing apparatus, wherein an information signal is recorded again at an arbitrary position between a start point and an end point of the recording medium.