JP2001057060A - Tape position converting device, cassette changer, av stream continuously recording device and program recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a device which is capable of selecting a target cassette tape even when a command such as to select a cassette tape by one from among plural cassette tapes and is capable of loading the cassette tape in a cassette deck and, moreover, is capable of recording AV streams on a cassette tape without omitting AV streams during the cassette tape is interchanged. SOLUTION: This device is provided with a hard disk device 20, a command processing circuit 11 extracting an operand by discriminating a command, a tape position converting circuit 7 decoding virtual positional information in the operand into a cassette housing number and actual positional information, a cassette transmitting device 16 transmitting a cassette according to the housing number, a track number detecting circuit 14 reading out a tape position, a track number comparing circuit i3 instructing a tape running, a disk recording circuit 18 and a disk reproducing circuit 19 controlling the recording and the reproducing of AV streams with respect to the hard disk 20 and a tape recording and reproducing circuit 15 recording reproduced AV streams on a cassette 1 and the device is made to prevent AV streams which are being inputted from being omitted during the loading of the cassette tape into the cassette deck.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a tape position conversion device, a cassette changer, an AV stream continuous recording device, and a program recording medium for recording a V stream on a cassette tape without missing even during cassette replacement.

[0002]

2. Description of the Related Art Conventionally, a cassette deck having an IEEE1394 interface is known as a device for judging a command inputted from the outside, accessing a predetermined tape position, and recording and reproducing an AV stream.

FIG. 5 is a diagram showing a system configuration of a conventional cassette deck. Referring to FIG.
An example of recording and reproduction on a cassette deck with a built-in 1394 interface will be described.

In FIG. 5, reference numeral 101 denotes a 1394 controller, and 102 denotes a command processing circuit. 103
Is a servo controller which controls a motor for rotating a reel of a cassette tape. A recording / reproducing circuit 104 writes a video signal on a cassette tape and reads a video signal from the cassette tape. Reference numeral 105 denotes a tape position detection circuit, and reference numeral 106 denotes a tape position comparison circuit. 107 is a cassette tape.

[0005] 1394 controller 101 from the input terminal
When a command is input to the command processing circuit 102, the command is decoded by the command processing circuit 102.
4 When an AV stream is input to the controller 101,
The AV stream is transferred to the recording / reproducing circuit 104. The command processing circuit 102 performs recording, reproduction, fast forward,
A command for rewinding or the like is decoded and the recording / reproducing circuit 1
04 and a command to the servo controller 103. If the input command is a command of "fast-forward to a predetermined position", it instructs the servo controller 103 to rotate the motor in the fast-forward direction, and outputs information on the target tape position to the tape position comparing circuit 106. I do. The recording / reproducing circuit 10 from the cassette tape 107 even during fast-forwarding
4 reproduces a video signal and a tape position detecting circuit 1
05 is input. The tape position detection circuit 105 reads a signal indicating the tape position from the input video signal and can detect where the tape is currently accessed. The tape position detected by the tape position detection circuit 105 is input to the tape position comparison circuit 106 and compared with the target tape position given from the command processing circuit 102. When the target tape position approaches the detected tape position, the tape position comparison circuit 106 issues a deceleration command to the servo controller 103, and issues a stop command when the tape positions match. After the stop, the tape position comparison circuit 106
When the command processing circuit 102 informs the command processing circuit 102 that the access to the target position of the cassette tape 107 has been completed, the command processing circuit 102 similarly informs the outside via the 1394 controller 101 that the access has been completed. When the access ends and the AV stream is input to the 1394 controller 101 simultaneously with the external recording command, the command processing circuit 102
A command is issued to run at double speed, and the recording / reproducing circuit 104
Is instructed to record the input AV stream.

Thus, in the above conventional example, I
Servo controller 103 and tape position detection circuit 1 on cassette deck with built-in EEE1394 interface
05, the provision of the tape position comparison circuit 106 allows the AV stream to be recorded and reproduced after accessing a predetermined tape position.

[0007]

However, in order to control each cassette tape in a cassette changer having a plurality of cassette tapes so as to control the cassette tape in a cassette deck having an IEEE1394 interface as described above, It had the following problems.

First, the IEEE 1394 standard does not support a command for selecting only one cassette tape from a plurality of cassette tapes and loading the cassette tape into a cassette deck.
There was a problem that only one had to be extracted and loaded on the cassette deck.

Further, even if an interface is provided which supports a command for selecting only one cassette tape from a plurality of cassette tapes and loading the cassette tape into the cassette deck, the cassette tape currently loaded is not affected. After unloading
Since commands must be issued frequently to return to a predetermined storage location and then load the desired cassette to the cassette deck, there is a problem that command communication takes time and processing cannot be performed very quickly. .

Further, after the cassette tape loaded on the cassette deck has been recorded, while the cassette tape is being replaced with the next cassette tape, no cassette tape is loaded on the cassette deck. Was also missing.

SUMMARY OF THE INVENTION In view of the above problems, the present invention selects a desired cassette tape and loads it onto a cassette deck without a command for selecting only one cassette tape from a plurality of cassette tapes. It is an object of the present invention to provide a device that can record on a cassette tape without dropping an AV stream while replacing the same.

[0012]

In order to solve this problem, a first aspect of the present invention (corresponding to claim 1) is to have a plurality of cassettes, and to have the cassettes held by an external command. In a cassette changer to be sent to the outside, virtual position information common to all the cassettes held by the cassette changer is stored in the storage number of each cassette held by the cassette changer and the cassette stored at the position of the storage number. This is a tape position conversion device that converts the information into the actual position information of the tape.

According to a second aspect of the present invention (corresponding to claim 2), a plurality of cassettes are held, and a cassette to be recorded and reproduced from the held cassettes is designated by an external command.
An external command input means for receiving a command from the outside, the cassette changer recording and reproducing a V stream;
The virtual position information included in the command received by the external command input means is decoded into the cassette storage number of the cassette changer and the actual position information on the tape of the cassette stored at the position of the storage number. Virtual position information decoding means, and cassette transmitting means for selecting and transmitting a cassette stored at the position of the cassette storage number decoded by the virtual position information decoding means,
AV for the cassette sent by the cassette sending means
A cassette changer comprising: a cassette deck for recording and reproducing a stream; and access means for accessing a target tape position based on the real position information decoded by the virtual position information decoding means.

According to a third aspect of the present invention (corresponding to claim 3), a plurality of cassettes are held, and a cassette to be recorded and reproduced from the held cassettes is designated by an external command.
An AV stream continuous recording device provided with a cassette changer for recording and reproducing a V stream, wherein a disc type recording medium on which an externally input AV stream is recorded and a type of an externally input command are determined; Command decoding means for extracting an operand, and decoding virtual position information included in the operand into a cassette storage number of the cassette changer and real position information on a tape of a cassette stored at the position of the storage number. Virtual position information decoding means for selecting a cassette stored at the position of the cassette storage number decoded by the virtual position information decoding means, and sending the cassette to a cassette deck for recording and reproducing the AV stream. A video signal read from the cassette deck The tape position reading means for reading the tape position being accessed, the actual position information decoded by the virtual position information decoding means, and the tape position information read by the tape position reading means are compared, and the target tape is read. Access determining means for determining whether or not the position can be accessed and instructing tape running, and a determination result of the access determining means and the command,
A disc recording / reproducing means for controlling recording / reproducing of an AV stream with respect to the disc-type recording medium; an AV stream reproduced by the disc recording / reproducing means according to a judgment result of the access judging means and the command;
And a tape recording means for controlling recording on the tape of the cassette.

According to a fourth aspect of the present invention (corresponding to claim 4), a plurality of cassettes are held, and a cassette for recording and reproducing from the held cassettes is designated by an external command, and A
An AV stream continuous recording device provided with a cassette changer for recording and reproducing a V stream, wherein a disc type recording medium on which an externally input AV stream is recorded and a type of an externally input command are determined; Command decoding means for extracting an operand, a cassette tape satisfying a recording time included in the operand, a tape management means for instructing a recording position of the selected cassette, and a cassette designated by the tape management means. A cassette sending means for sending to a cassette deck for recording and reproducing the AV stream; a tape position reading means for reading a tape position being accessed from a video signal read from the cassette deck; The recording position, the tape position reading Compares the tape position information means read an access determination means for instructing the tape running by determining whether or not access to the tape position of the object,
A disk recording / reproducing means for controlling recording / reproduction of an AV stream to / from the disk type recording medium based on a result of the determination by the access determining means and the command; Tape recording means for controlling recording of the AV stream reproduced by the means on a tape of a cassette.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS.

(First Embodiment) FIG. 1 shows a first embodiment of the present invention.
FIG. 1 is a diagram for explaining a tape position conversion device according to the embodiment of the present invention. In FIG. 1, 1 is a cassette tape, 2 is a track, and 3 is a tape position recording area existing on a track 2. . Reference numeral 4 denotes a cassette changer containing n cassette tapes 1, and reference numeral 5 denotes an actual track number recorded on each cassette tape 1. 6 is a virtual track number assigned to each cassette tape 1. 7 is a tape position conversion circuit,
8 is a memory. 9 is a cassette storage number.

The operation of the tape position conversion device configured as described above will be described below.

The track 2 of the cassette tape 1 is provided with a tape position recording area 3. The actual track number 5 is recorded in the tape position recording area 3, and the recording / reproducing position or the access position on the cassette tape 1 is recognized by reading the actual track number 5. Normally, the actual track number 5 has the same value for each cassette tape 1. Then, the virtual track number 6 is stored in the memory 8 in advance.
And the storage number 9 and the actual track number 5 of each cassette tape 1 are stored.

Now, when the virtual track number 6 is input from outside to the tape position conversion circuit 7, the tape position conversion circuit 7
Inputs the virtual track number 6 to the memory 8 as an address and reads the value stored at that address. Since the read value indicates the storage number 9 of the cassette tape 1 and the actual track number 5 of the cassette tape 1 stored in the cassette storage number 9, the virtual track number 6 indicates the storage number of the cassette tape 1. This is converted into the track number and the actual track number 5. If the input virtual track number 6 is larger than the number of data stored in the memory 8, the tape position conversion circuit 7 notifies the outside that the input virtual track number 6 does not exist.

As described above, the tape position conversion device according to the first embodiment converts the input virtual track number 6 into
Since the cassette number is converted into the storage number 9 and the actual track number 5 of the cassette tape 1, a plurality of cassettes can be handled as if they were a single cassette. Therefore, the external device must be aware of the cassette tape number, loading and unloading. Without specifying the access position.

In the first embodiment, the relationship to be stored is input from the outside into the memory 8, and the virtual track number 6, the storage number 9 of each cassette tape 1, the real track number 5, I remember the relationship.
By the way, regarding the relationship stored in the memory 8, for example, the manufacturer or user of the tape position conversion device of the first embodiment determines the number of cassette tapes 1 stored in the cassette changer, The storage number 9 of the tape 1 and the actual track number 5 of each cassette tape 1
The corresponding relationship between the storage number 9 of each cassette tape 1 corresponding to each virtual track number 6 and the real track number 5 is determined from the total number of the virtual track numbers 6, and the relationship is stored in the memory 8.

In the above paragraph, the manufacturer or user obtains the correspondence and stores it in the relation memory 8. However, a correspondence calculation means for obtaining the correspondence is provided inside the tape position conversion device. The correspondence calculating means is required to determine the correspondence, and the calculated correspondence is stored in the memory 8.
May be stored. In this case, the storage number 9 of each cassette tape 1 and the information of the actual track number 5 may be input from the outside to the correspondence calculating means. The information of the actual track number 5 and the number of cassette tapes 1 stored in the cassette changer may be checked. For example, when a semiconductor memory storing information of the actual track number 5 is attached to the outside of the storage case of each cassette tape 1, the correspondence calculating means uses the semiconductor memory to store the actual track number. 5 information can be obtained. In addition, the correspondence relation calculating means is provided for each cassette tape 1.
, The information of the actual track number 5 can be obtained.

In the first embodiment, the correspondence is stored in the memory 8 in advance.
May be provided and the correspondence calculating means may calculate the correspondence whenever it is necessary to obtain the correspondence.

In short, the tape position conversion device of the first embodiment converts the input virtual track number 6 for each cassette tape 1 stored in the cassette changer into the cassette tape corresponding to the virtual track number 6. This is a device that converts the storage number 9 and the actual track number 5 into 1.

(Second Embodiment) FIG. 2 shows a second embodiment of the present invention.
FIG. 2 shows the configuration of a cassette changer according to the first embodiment. In FIG. 2, 1 is a cassette tape, 10 is a 1394 controller, and 11 is a command processing circuit. 7 is a tape position conversion circuit, and 8 is a memory. A servo controller 12 controls a motor for rotating a reel of the cassette tape 1. 13
Is a track number comparison circuit, and 14 is a track number detection circuit. A recording / reproducing circuit 15 writes a video signal to the cassette tape 1 and reads a video signal from the cassette tape 1. Reference numeral 16 denotes a cassette delivery device which loads the selected cassette tape 1 to the cassette deck 17 or unloads the cassette tape 1 from the cassette deck 17. Note that the first
In the present embodiment, the cassette changer 4 in this embodiment means the cassette delivery device 16, and the cassette changer 4 in the first embodiment.
The meaning of the cassette changer in the present embodiment is not the same.

The operation of the cassette changer according to the second embodiment configured as described above will be described below.

When a command is input from the input terminal to the 1394 controller 10, the command processing circuit 11 decodes the command and extracts an operand. When an AV stream is input from the input terminal to the 1394 controller 10, the AV stream is transferred to the recording / reproducing circuit 15. The command processing circuit 11 is a recording / reproducing circuit 1 based on commands such as recording, reproduction, fast forward, and rewind.
5 and a command to the servo controller 12. Now, it is assumed that the input command and the operand are “fast-forward to a target position”. A virtual track number 6 representing a target position is shown in the operand input from the outside, and the command processing circuit 11 inputs the virtual track number 6 to the tape position conversion circuit 7. When input to the tape position conversion circuit 7, the tape position conversion circuit 7 inputs the virtual track number 6 to the memory 8 as an address and reads the value stored at that address. Since the read values indicate the storage number 9 of the cassette tape and the actual track number 5 of the cassette tape 1 stored in the cassette storage number 9, the virtual track number 6 corresponds to the storage number 9 and the storage number 9 of the cassette tape 1. This is converted to the actual track number 5. The tape position conversion circuit 7 outputs the converted cassette storage number 9 to the cassette sending device 16 and the actual track number 5, ie, the target tape position, to the track number comparison circuit 13. Further, the command processing circuit 11 instructs the servo controller 12 to rotate the motor in the fast-forward direction.

The cassette delivery device 16 to which the cassette storage number 9 has been transmitted selects the cassette tape 1 stored in the cassette storage number 9 and loads it on the cassette deck 17. When the loading is completed, the servo controller 12 instructs the motor of the cassette deck 17 to rotate in the fast-forward direction. A video signal is reproduced from the loaded cassette tape 1 through the recording / reproducing circuit 15 even during fast-forwarding, and is input to the track number detecting circuit 14. The track number detection circuit 14 reads the track number indicating the tape position from the input video signal,
It can detect where the tape is currently accessing. The track number detected by the track number detection circuit 14 is input to the track number comparison circuit 13 and compared with the target tape position given by the tape position conversion circuit 7, that is, the actual track number 5. If the detected track number approaches the actual track number 5, the track number detection circuit 13 issues a deceleration command to the servo controller 12, and issues a stop command if the track numbers match. After the stop, the track number detection circuit 13 notifies the command processing circuit 11 that the access of the cassette tape 1 to the target position has been completed.
The 1394 controller 10 informs the outside that the access has been completed. When the access is completed and the AV stream is input to the 1394 controller 10 simultaneously with the external recording command, the command processing circuit 11 instructs the servo controller 12 to run at 1 × speed, and inputs the command to the recording / reproducing circuit 15. Command to record the current AV stream.

As described above, the cassette changer according to the second embodiment converts the virtual track number 6 indicating the input target position into the storage number 9 and the actual track number 5 of the cassette tape 1, and then fast-forwards and rewinds. In this case, multiple cassettes can be handled as if they were a single cassette. Therefore, the external device that issues the command does not need to be aware of the cassette tape number, loading, or unloading, and the target tape position of the target cassette Can be accessed. That is, the target tape position can be accessed by issuing a single command.

(Third Embodiment) FIG. 3 shows a third embodiment of the present invention.
FIG. 3 shows the configuration of an AV stream continuous recording apparatus according to the embodiment of FIG.
Reference numeral 10 denotes a 1394 controller, and reference numeral 11 denotes a command processing circuit. 7 is a tape position conversion circuit, and 8 is a memory. A servo controller 12 controls a motor for rotating a reel of the cassette tape 1. 13 is a track number comparison circuit, and 14 is a track number detection circuit. Reference numeral 15 denotes a tape recording / reproducing circuit which writes a video signal to the cassette tape 1 and
A video signal is read from the cassette tape 1.
Reference numeral 16 denotes a cassette delivery device which loads the selected cassette tape 1 to the cassette deck 17 or unloads the cassette tape 1 from the cassette deck 17. 18
Is a disk recording circuit, 19 is a disk reproducing circuit, and 20 is a hard disk device.

The operation of the AV stream continuous recording apparatus configured as described above will be described below.

When a command is input from the input terminal to the 1394 controller 10, the command processing circuit 11 decodes the command and extracts an operand. When an AV stream is input from the input terminal to the 1394 controller 10, the AV stream is transferred to the disk recording circuit 18. The command processing circuit 11 sends commands to the disk recording circuit 18 and the servo controller 12 based on commands such as recording, reproduction, fast forward, and rewind. now,
It is assumed that the input command and operand are "access and record a target position". A virtual track number 6 representing a target position is included in the operand input from the outside.
The command processing circuit 11 inputs the virtual track number 6 to the tape position conversion circuit 7. When input to the tape position conversion circuit 7, the tape position conversion circuit 7
Inputs the virtual track number 6 to the memory 8 as an address and reads the value stored at that address. Since the read values indicate the storage number 9 of the cassette tape and the actual track number 5 of the cassette tape 1 stored in the cassette storage number 9, the virtual track number 6 corresponds to the storage number 9 and the storage number 9 of the cassette tape 1. This is converted to the actual track number 5. The tape position conversion circuit 7 outputs the converted cassette storage number 9 to the cassette sending device 16 and the actual track number 5, ie, the target tape position, to the track number comparison circuit 13. Also, the command processing circuit 11
Instructs the servo controller 12 to rotate the motor in the fast-forward direction.

The cassette delivery device 16 to which the cassette storage number 9 has been transmitted selects the cassette tape 1 stored in the cassette storage number 9 and loads it on the cassette deck 17. When the loading is completed, the servo controller 12 instructs the motor of the cassette deck 17 to rotate in the fast-forward direction. The tape recording / reproducing circuit 15 is loaded from the loaded cassette tape 1 even during fast forward.
The video signal is reproduced through the
4 is input. The track number detection circuit 14 reads the track number indicating the tape position from the input video signal, and can detect where the tape is currently accessed. The track number detected by the track number detection circuit 14 is input to the track number comparison circuit 13 and the target tape position given from the tape position conversion circuit 7 is
That is, it is compared with the actual track number 5. If the actual track number 5 and the detected track number are approaching,
The track number comparison circuit 13 includes a servo controller 12
And a stop command is issued if the track numbers match. After the stop, the track number comparing circuit 13 notifies the command processing circuit 11 that the access of the cassette tape 1 to the target position has been completed.

The command processing circuit 11 sends a command to the disk recording circuit 18 to record the AV stream input from the 1394 controller 10 on the hard disk device 20 immediately after receiving the command. When notified that the access has been completed from the track number comparison circuit 13, the command processing circuit 11 instructs the disk reproduction circuit 19 to reproduce the AV stream recorded on the hard disk device 20 from the beginning. At the same time, since the recording instruction is also issued to the tape recording / reproducing circuit 15, the AV stream reproduced from the hard disk device 20 is immediately input to the cassette tape 1 via the tape recording / reproducing circuit 15. At this time, the command processing circuit 11 instructs the servo controller 12 to run at 1 × speed. Therefore, in the hard disk drive 20, 13
While the AV stream input from the 94 controller 10 is being recorded, the operation of reproducing the AV stream recorded with a time difference is performed at the same time. Therefore, the AV stream input at the same time as the command is received is recorded on the cassette tape 1 without loss.

As described above, in the AV stream continuous recording apparatus, the AV stream to be input immediately after receiving the recording command is temporarily recorded on the hard disk device 20, and the cassette sending device 16 selects the target cassette tape 1 and accesses the target tape position. After the completion, the data is reproduced from the hard disk device 20, so that the AV stream input simultaneously with the reception of the command can be recorded on the cassette tape 1 without loss.

(Fourth Embodiment) FIG. 4 shows a fourth embodiment of the present invention.
FIG. 4 shows a configuration of an AV stream continuous recording apparatus according to the embodiment of FIG.
Reference numeral 10 denotes a 1394 controller, and reference numeral 11 denotes a command processing circuit. 21 is a tape management circuit, and 8 is a memory. A servo controller 12 controls a motor for rotating a reel of the cassette tape 1.
13 is a track number comparison circuit, and 14 is a track number detection circuit. A tape recording / reproducing circuit 15 writes a video signal to the cassette tape 1 and reads a video signal from the cassette tape 1. 1
Reference numeral 6 denotes a cassette delivery device which loads the selected cassette tape 1 to the cassette deck 17 or unloads the cassette tape 1 from the cassette deck 17. 18 is a disk recording circuit, 19 is a disk reproducing circuit, and 20 is a hard disk device.

The operation of the AV stream continuous recording apparatus configured as described above will be described below.

When a command is input from the input terminal to the 1394 controller 10, the command processing circuit 11 decodes the command and extracts an operand. When an AV stream is input to the 1394 controller 10 from an input terminal, the AV stream is output to the disk recording circuit 18.
Is forwarded to The command processing circuit 11 performs recording, reproduction,
A command is sent to the disk recording circuit 18 or the servo controller 12 based on commands such as fast forward and rewind.
Now, it is assumed that the input command and operand are "record a program for 2 hours". The externally input operand indicates the recording time, and the command processing circuit 11 inputs the recording time to the tape management circuit 21. When the recording time is input, the tape management circuit 21 reads out the recording information of each cassette tape 1 from the memory 8.
The recording information indicates the remaining amount of tape, the position of an unrecorded area, the recording time of the program, and the date and time of each cassette tape 1 stored in the cassette sending device 16.
Is a cassette tape 1 with the same amount of tape remaining as the recording time
Is selected, the cassette storage number 9 is output to the cassette sending device 16 and the actual track number 5 of the unrecorded area, that is, the target tape position is output to the track number comparison circuit 13. If there is no remaining time for each cassette tape 1 for the recording time, the program having the oldest recording date and time is selected, and the cassette storage number 9 is similarly sent to the cassette sending device 16 for the actual track number 5 of the unrecorded area, The tape position is output to the track number comparison circuit 13. Also, the command processing circuit 11
Instructs the servo controller 12 to rotate the motor in the fast-forward direction.

The cassette delivery device 16 to which the cassette storage number 9 has been transmitted selects the cassette tape 1 stored in the cassette storage number 9 and loads it on the cassette deck 17. When the loading is completed, the servo controller 12 instructs the motor of the cassette deck 17 to rotate in the fast-forward direction. The tape recording / reproducing circuit 15 is loaded from the loaded cassette tape 1 even during fast forward.
The video signal is reproduced through the
4 is input. The track number detection circuit 14 reads the track number indicating the tape position from the input video signal, and can detect where the tape is currently accessed. The track number detected by the track number detection circuit 14 is input to the track number comparison circuit 13 and compared with the target tape position given by the tape management circuit 21, that is, the actual track number 5. If the detected track number approaches the actual track number 5, the track number comparison circuit 13 issues a deceleration command to the servo controller 12, and issues a stop command if the track numbers match. After the stop, the track number comparing circuit 13 notifies the command processing circuit 11 that the access of the cassette tape 1 to the target position has been completed.

The command processing circuit 11 sends a command to the disk recording circuit 18 to record the AV stream input from the 1394 controller 10 on the hard disk device 20 immediately after receiving the command. When notified that the access has been completed from the track number comparison circuit 13, the command processing circuit 11 instructs the disk reproduction circuit 19 to reproduce the AV stream recorded on the hard disk device 20 from the beginning. At the same time, since the recording instruction is also issued to the tape recording / reproducing circuit 15, the AV stream reproduced from the hard disk device 20 is immediately input to the cassette tape 1 via the tape recording / reproducing circuit 15. At this time, the command processing circuit 11 instructs the servo controller 12 to run at 1 × speed. Therefore, in the hard disk drive 20, 13
While the AV stream input from the 94 controller 10 is being recorded, the operation of reproducing the AV stream recorded with a time difference is performed at the same time. Therefore, the AV stream input at the same time as the command is received is recorded on the cassette tape 1 without loss.

As described above, in the AV stream continuous recording device, the AV stream to be input immediately after receiving the recording command is temporarily recorded on the hard disk device 20, and the cassette sending device 16 selects the target cassette tape 1 and accesses the target tape position. After the completion, the data is reproduced from the hard disk device 20, so that the AV stream input simultaneously with the reception of the command can be recorded on the cassette tape 1 without loss.

Incidentally, all or a part of each component of the tape position conversion device of the first embodiment, the cassette changer of the second embodiment, or the AV of the third or fourth embodiment. All or a part of each component of the stream continuous recording apparatus may be hardware, or may be software having the same function as the corresponding function of the hardware.

Further, as shown in claim 5, each function of the tape position conversion device according to claim 1, the function of all or a part of each component of the cassette changer according to claim 2, or The AV according to claim 3 or claim 4.
A program recording medium characterized by storing a program for causing a computer to realize all or a part of each function of each component of the stream continuous recording apparatus also corresponds to the present invention.

[0045]

As described above, according to the present invention, the virtual position information common to all the cassettes held by the cassette changer is stored in the storage number of each cassette held by the cassette changer and the position of the storage number. By converting the information into the actual position information of the tape on the cassette, it is possible to handle multiple cassettes as if it were a single cassette, so the external device must be aware of the cassette tape number, loading, and unloading. A remarkable effect is obtained that the access position can be designated without the need.

Also, external command input means for receiving an external command, virtual position information included in the command received by the external command input means is stored in a cassette changer cassette storage number and the position of the storage number. The virtual position information decoding means for decoding the actual position information on the tape of the cassette stored in the cassette, and the cassette stored in the position of the cassette storage number decoded by the virtual position information decoding means. A cassette sending means for sending, a cassette deck for recording and reproducing an AV stream with respect to the cassette sent by the cassette sending means, and a target tape position based on the real position information decoded by the virtual position information decoding means. External device that issues commands once. Remarkable effect of being able to access to the target tape position command issue can be obtained.

A disk-type recording medium on which an externally input AV stream is recorded, a command decoding means for determining the type of a command input from the outside and extracting an operand, The virtual position information decoding means for decoding the position information into the cassette storage number of the cassette changer and the actual position information on the tape of the cassette stored at the position of the storage number, and the virtual position information decoding means decodes the position information. Cassette sending means for selecting a cassette housed at the position of the cassette housing number, and sending it to a cassette deck for recording and reproducing the AV stream; and a tape position accessed from a video signal read from the cassette deck. Tape position reading means for reading the virtual position, Access determining means for comparing the actual position information decoded by the information decoding means with the tape position information read by the tape position reading means to determine whether or not a target tape position has been accessed and instructing tape running; A disk recording / reproducing means for controlling recording / reproduction of an AV stream on the disk-type recording medium based on a result of the determination by the access determining means and the command; The provision of the tape recording means for controlling the recording of the AV stream reproduced by the recording / reproducing means on the tape of the cassette makes it possible to record the AV stream inputted simultaneously with the reception of the command on the cassette tape without loss. The remarkable effect is obtained.

Further, a disk-type recording medium on which an externally input AV stream is recorded, a command decoding means for determining the type of an externally input command and extracting an operand, and a recording function included in the operand A tape management means for selecting a cassette tape satisfying the time and instructing a recording position of the selected cassette; and selecting a cassette designated by the tape management means,
Cassette sending means for sending to a cassette deck for recording and reproducing a stream; tape position reading means for reading a tape position being accessed from a video signal read from the cassette deck; and a recording position designated by the tape managing means. Comparing the tape position information read by the tape position reading means to determine whether or not the target tape position has been accessed, and instructing tape running; and A disc recording / reproducing means for controlling recording / reproducing of an AV stream with respect to the disc type recording medium by a command; an AV stream reproduced by the disc recording / reproducing means according to the judgment result of the access judging means and the command; Tape recording to control recording on cassette tape By and means, remarkable effect can be obtained that can be recorded on a cassette tape without missing an AV stream to be input command received at the same time.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining a tape position conversion device according to a first embodiment of the present invention;

FIG. 2 is a configuration diagram of a cassette changer according to a second embodiment of the present invention.

FIG. 3 is a configuration diagram of an AV stream continuous recording device according to a third embodiment of the present invention.

FIG. 4 is a configuration diagram of an AV stream continuous recording device according to a fourth embodiment of the present invention.

FIG. 5 is a configuration diagram of a conventional AV stream recording device.

[Explanation of symbols]

 1 Cassette tape 2 Track 3 Tape position recording area 4 Cassette changer 5 Real track number 6 Virtual track number 7 Tape position conversion circuit 8 Memory 9 Cassette storage number 10 1394 controller 11 Command processing circuit 12 Servo controller 13 Track number comparison circuit 14 Track number Detection circuit 15 Recording / reproducing circuit (tape recording / reproducing circuit) 16 Cassette sending device 17 Cassette deck 18 Disk recording circuit 19 Disk reproducing circuit 20 Hard disk drive 21 Tape management circuit

Claims (5)

[Claims] 1. A cassette changer that holds a plurality of cassettes and sends out the cassettes held by an external command to the outside, wherein virtual position information common to all the cassettes held by the cassette changer is stored in the cassette changer. A tape position conversion device for converting a storage number of each cassette held by a cassette changer into actual position information of a tape on a cassette stored at the position of the storage number. 2. A cassette changer for holding a plurality of cassettes and recording / reproducing an AV stream by designating a cassette to be recorded / reproduced from the cassette held by an external command, and receiving an external command. External command input means, and the virtual position information contained in the command received by the external command input means, the cassette change number of the cassette changer, and the cassette tape stored at the position of the change number. Virtual position information decoding means for decoding the actual position information; cassette sending means for selecting and sending a cassette stored at the position of the cassette housing number decoded by the virtual position information decoding means; AV to cassette sent by means
A cassette changer comprising: a cassette deck for recording and reproducing a stream; and access means for accessing a target tape position based on the real position information decoded by the virtual position information decoding means. 3. An AV stream continuous recording apparatus having a plurality of cassettes, and a cassette changer for recording and reproducing an AV stream by designating a cassette to be recorded and reproduced from the retained cassette by an external command. A disk-type recording medium on which an externally input AV stream is recorded; a command decoding means for determining the type of the externally input command and extracting an operand; and a virtual position information included in the operand. Virtual position information decoding means for decoding the cassette storage number of the cassette changer and the actual position information on the tape of the cassette stored at the position of the storage number, and the virtual position information decoding means Select the cassette stored at the cassette storage number, and A cassette sending means for sending the cassette deck for recording and reproducing AV stream from the video signal read from the cassette deck,
A tape position reading means for reading a tape position being accessed; comparing the actual position information decoded by the virtual position information decoding means with the tape position information read by the tape position reading means; Access judging means for judging whether or not access has been made and instructing tape running; disc recording / reproducing for controlling recording / reproducing of an AV stream with respect to the disc type recording medium according to the judgment result of the access judging means and the command Means, and an AV reproduced by the disk recording / reproducing means, based on a result of the judgment by the access determining means and the command.
An AV stream continuous recording apparatus comprising: a tape recording unit that controls recording of a stream on a tape of the cassette. 4. An AV stream continuous recording apparatus comprising a plurality of cassettes, and a cassette changer for recording and reproducing an AV stream by designating a cassette to be recorded and reproduced from the retained cassette by an external command. A disc-type recording medium on which an externally input AV stream is recorded; a command decoding means for determining the type of a command input from the outside and extracting an operand; and satisfying a recording time included in the operand. Tape management means for selecting a cassette tape and instructing a recording position of the selected cassette; cassette sending means for selecting a cassette designated by the tape management means and sending it to a cassette deck for recording and reproducing the AV stream; From the video signal read from the cassette deck,
A tape position reading means for reading a tape position being accessed, and comparing the recording position designated by the tape management means with the tape position information read by the tape position reading means, to determine whether a target tape position has been accessed. Access judging means for judging whether or not the tape is running, disc recording / reproducing means for controlling recording / reproducing of an AV stream with respect to the disc type recording medium according to the judgment result of the access judging means and the command, The AV reproduced by the disk recording / reproducing means according to the judgment result of the access determining means and the command.
An AV stream continuous recording apparatus comprising: a tape recording unit that controls recording of a stream on a tape of a cassette. 5. The function of the tape position conversion device according to claim 1, the function of all or a part of the constituent means of the cassette changer according to claim 2, or the function of claim 3 or 4. A program recording medium storing a program for causing a computer to realize all or a part of each function of each component of the AV stream continuous recording device.