JPH04238137A - Recording and reproducing device - Google Patents

Abstract

PURPOSE:To obviate the generation of an unintentional unrecorded part on the way even in the case of recording of the reproduced signals by DAT having a skip ID function with another recorder. CONSTITUTION:The recorder 12 is set in a recording standby state by applying a control signal to set the recorder 12 at the recording standby state from a control means 9 to the recorder during the jump period after the DAT reads a skip identifier before the DAT reads the next start identifier at the time of recording the main data reproduced from a magnetic tape 3 by the DAT 1 on the recording medium by another recorder 12 in synchronization with the reproduction operation thereof.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention is applicable to digital audio tape recorders.
A signal such as a music program played from a magnetic tape by a DAT recorder (hereinafter abbreviated as DAT) is transferred to another recording device such as a compact cassette tape recorder (hereinafter abbreviated as C-cassette) in synchronization with the playback operation of the DAT. The present invention relates to a recording and reproducing apparatus that records on a recording medium such as a magnetic tape.

0002

2. Description of the Related Art Some conventional audio DATs are equipped with a function called a skip ID function that enables interlaced playback. This skip ID function is used when recording main data such as music programs on magnetic tape.
Or, in the editing stage after recording, add a start identifier (hereinafter also abbreviated as start ID) that indicates the start of the main data at each leading position of the main data, and then add a start identifier (hereinafter also abbreviated as start ID) to the middle of the main data until the next start identifier. Skip identifiers (hereinafter also referred to as skip IDs) that indicate skipping in playback are recorded as subcode data, and when the above skip ID is read during playback, the next start ID is read from that position. By running the magnetic tape at high speed to the desired position, interlaced playback of the main data is performed. During this skipping operation, the DAT is in a muting state in which it does not output a reproduction signal.

0003

[Problem to be Solved by the Invention] However, it has been attempted to record main data such as a music program played by a DAT having the above-mentioned skip ID function onto a recording medium such as a magnetic tape using another recording device such as a C cassette tape. In this case, no signal is input to another recording device that is performing a recording operation for several seconds to tens of seconds from when the DAT reads the skip ID of the magnetic tape until it reads the next start ID, so this recording device The problem with recording media such as magnetic tapes recorded by this method is that silent parts are recorded in the middle of recording music programs.

[0004] Therefore, an object of the present invention is to
To provide a recording and reproducing device that does not cause an unintended unrecorded portion in the middle even when a reproduced signal by a DAT having a D function is recorded in another recording device.

[0005]

[Means for Solving the Problems] The present invention provides, as subcode data, a start identifier that indicates the start of the main data at the beginning position of the main data, and a start identifier that indicates the start of the main data at a position in the middle of the main data until the next start identifier position. A digital audio tape recorder plays back the magnetic tape on which a skip identifier indicating skipping is performed, and the main data to be played is recorded on another recording device in synchronization with the playback operation of the digital audio tape recorder. In a recording/playback device configured to record on
A control means is provided for supplying a control signal to the recording device for setting the recording device in a recording standby state from when the audio tape recorder reads the skip identifier until when the audio tape recorder reads the next start identifier. This is a recording/playback device.

[0006]

[Operation] According to the present invention, when main data played back from a magnetic tape by a digital audio tape recorder is recorded on a recording medium by another recording device in synchronization with the playback operation, the digital audio tape recorder uses a skip identifier. During the jump period from reading the start identifier to reading the next start identifier, a control signal is given from the control means to the recording apparatus to set it in a recording standby state. As a result, during that time, the recording device does not perform any recording operation and enters a standby state, so that unintentional unrecorded data due to skip playback of the digital audio tape recorder may occur in the middle of the main data recorded on the recording medium by this recording device. No parts arise.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing the basic configuration of a recording/reproducing apparatus which is an embodiment of the present invention.

The DAT system section 1 includes a mechanism section 2, recording/reproducing heads 4a and 4b, a signal processing circuit 5, a conversion circuit 6, a mechanism section drive circuit 7, a servo circuit 8, and a DAT system control circuit 9.
It is composed of etc.

The mechanism section 2 includes a rotating drum equipped with upper recording/reproducing heads 4a and 4b for tracing the magnetic tape 3, a drum motor for rotationally driving this rotating drum, a capstan motor for running the magnetic tape 3, etc. It is made up of.

The signal processing circuit 5 performs interleaving processing and processing for adding an error correction code to the input signal to be recorded, and supplies the processed signal to the upper recording/reproducing heads 4a, 4b. magnetic tape 3
This circuit has a function of performing de-interleaving processing, error correction processing, etc. on the reproduced signal read from the source and sending it to the conversion circuit 6.

The conversion circuit 6 includes a digital-to-analog converter and an analog-to-digital converter. The digital-to-analog converter converts the main data digital playback signal sent from the signal processing circuit 5 into an analog playback signal and sends it to the analog output terminal 10. A process is performed in which an analog signal such as a music program to be recorded, which is input from the analog input terminal 11, is converted into a digital signal and provided to the signal processing circuit 5.

The mechanism section drive circuit 7 is a circuit for driving the capstan motor and drum motor in the mechanism section 2 in accordance with control signals given from the servo circuit 8 and the DAT system control circuit 9.

[0013] The DAT system control circuit 9
This circuit has a function of controlling the operation of the entire system section 1. This DAT system control circuit 9 performs subcode data to be recorded on the magnetic tape 3 during recording and editing.
A start ID indicates the beginning position of a series of continuous main data such as a music program for one song, and a skip ID indicates that playback skips from a position in the middle of the main data to the next start ID position. generate,
It also has a function to provide to the signal processing circuit 5.

[0014] Furthermore, this DAT system control circuit 9:
It has a control input terminal SIN and a control output terminal SOUT for controlling synchronous recording by another recording device during playback, and when the input level of the control input terminal SIN becomes low level during playback, the output level of the control output terminal SOUT changes. When switching from high level to low level and reading the above skip ID during playback, the control output terminal SOUT output level is switched from low level to high level, and then,
When the next start ID is read, the control output terminal SOU
It also has the function of returning the output level of T from high level to low level.

The C cassette 12 serves as a recording device for recording reproduction signals when the DAT system section 1 reproduces data, and includes a mechanism section 13, a mechanism section drive circuit 14, a recording/reproducing head 15a, and an erasing head 15b. , a recording circuit 16, a playback circuit 17, a recording/playback switch 20, a C cassette control circuit 21, and the like.

The mechanism section 13 is composed of a capstan motor or the like that runs the magnetic tape.

The mechanism section drive circuit 14 is a circuit for driving the capstan motor of the mechanism section 13 under the control of the C cassette control circuit 21.

The upper recording/reproducing head 15a is a magnetic head for recording signals on a magnetic tape and reproducing signals from the magnetic tape, and the above erasing head 15b is a magnetic head for erasing signals recorded on the magnetic tape.

The recording circuit 16 is a circuit that processes the signal to be recorded that is input from the input terminal 18 so as to make it suitable for recording, and outputs the signal. The signal is applied to the head 15a or the reproduction circuit 17.

The playback circuit 17 connects the recording circuit 16 or the recording/playback head 15a to the recording/playback switch 20.
This is a circuit that processes the signal sent through the output terminal 19 to make it suitable for reproduction and outputs the processed signal to the output terminal 19.

The recording/playback changeover switch 20 is a switch for selecting either the signal sent from the recording/playback head 15a or the recording circuit 16 and applying it to the playback circuit 17.

The C cassette control circuit 21 is a circuit having a function of controlling the operation of the C cassette 12 as a whole. The C cassette control circuit 21 also controls the DAT system of the DAT system section 1 to control the control signal for recording the signal reproduced by the DAT system section 1 in synchronization with the reproduction operation of the DAT system section 1. It has a control input terminal TSIN and a control output terminal TSOUT for communicating with the circuit 9, and when the C cassette 12 is in the recording mode, that is, in the recording operation state or the recording standby state, the control output terminal TSOUT is connected to the circuit 9.
The output level of the control input terminal SIN is set to low level at low level, and set to high level at other times, that is, when not in recording mode, and when the input level of control input terminal SIN becomes low level in the recording standby state, recording is started, and the input level is set to low level. It also has a control function to return to the recording standby state when the level becomes high again.

During the above-described synchronous recording operation, the control input terminal SIN and control output terminal SOUT of the DAT system control circuit 9 are connected to the control output terminal TSOUT and the control input terminal of the C cassette control circuit 21 via control relay terminals 22 and 23, respectively. The analog output terminal 10 of the DAT system section 1 is connected to the input terminal 18 of the C case 12 via the relay terminal 24.

FIG. 2 shows the DA in the recording/reproducing apparatus.
2 is a flowchart showing an operation when a signal reproduced by the T system section 1 is recorded by the C cassette player 12 in synchronization with the reproduction operation. FIG. 2(a) shows the operation on the DAT system section 1 side. FIG. 2(b) shows the operation on the C case 12 side. The operation will be described below with reference to this flowchart.

In the C cassette 12, following the preprocessing in step N1, it is checked in the next step N2 whether or not the recording mode is selected, that is, whether or not the recording standby state is entered. Here, if it is confirmed that the recording mode has been selected, the process moves to the next step N3, and the output level of the control output terminal TSOUT in the C cassette control circuit 21 is switched from the high level to the low level. .

On the other hand, in the DAT system unit 1, following the preprocessing in step S1, it is checked in step S2 whether the input level at the control input terminal SIN in the DAT system control circuit 9 is low level. When the input level becomes low level by executing step N3 on the C cassette 12 side, it is checked in the next step S3 whether or not the DAT system section 1 is in the reproduction state. If it is not in the reproducing state, the process moves to step S4, and the control output terminal SOU in the DAT system control circuit
The output level of T is maintained at a high level. On the other hand, if it is confirmed that it is in the playback state, the next step S
At step 5, the output level of the control output terminal SOUT is switched from the high level to the low level.

In response to this, on the C cassette 12 side, in step N4 following the previous step N3, it is confirmed that the input level of the control input terminal TSIN in the C cassette control circuit 21 has become a low level, and the next step N6 is performed. The recording operation starts. If the low level of the input level is not confirmed in step N4, the process moves to step N5 and the recording standby state is continued. When recording is started, it is checked in the next step N7 whether or not a command to stop recording has been given, and the processes of steps N4 to N7 are repeated unless there is a command to stop recording.

On the DAT system unit 1 side, step S5
After setting the output level of the control output terminal SOUT to a low level in step S6, it is checked in the next step S6 whether or not the skip ID, which is one of the subcode data, has been read from the magnetic tape. When it is confirmed that the skip ID has been read, the process moves to step S7 and the control output terminal SOUT
The output level of is switched from the previous low level to the high level. Along with this, DAT system section 1
In this case, a jump in playback is performed. That is, magnetic tape 3
At this point, the magnetic tape 3 is run at high speed until the next start ID is read out, and during this time, no reproduction signal is output from the analog output terminal 10 of the DAT system section 1.

During this time, in the C case 12, the control input terminal T
Since the input level of SIN is high level, the processing of steps N4 to N5 is repeated and a recording standby state is entered. In other words, during the muting period in which the DAT system section 1 performs a skipping operation upon detection of a skip ID, the C
No recording operation is performed on the cassette 12. Therefore, the magnetic tape recorded by the C cassette 12 does not have any silent portions caused by the skipping operation of the DAT system unit 1.

[0030] In the DAT system unit 1, after the above-mentioned jump operation is started, in the next step S8, the next start ID, that is, the identifier indicating the beginning position of main data such as a new music program, is read. If confirmed, the process moves to the next step 9, where the output level of the control output terminal SOUT in the DAT system control circuit 9 is switched from the high level to the low level. Furthermore, in the next step S10, a delay is applied for a preset arbitrary time, and then, in step S11, the DAT system unit 1 is returned to the reproduction state. By this delay operation, main data, ie, a new music program, whose head position is recorded at a position delayed by a predetermined time from the start ID detection position on the magnetic tape 3 is reproduced.

[0031] Thereafter, while the reproduction continues, steps S2~
The process of S11 is repeated.

In the C case 12, in step N7,
When it is confirmed that the recording stop designation has been given, the process moves to the next step N8, where the output level of the control output terminal TSOUT in the C cassette control circuit 21 is switched to high level.

In response to this, the DAT system unit 1 confirms in step S2 that the input level at the control input terminal SIN of the DAT system control circuit 9 is high level, and the process moves to step S12, where the DAT The output level of the control output terminal SOUT in the system control circuit 9 is switched to high level. In other words, D.A.
The reproduction operation in the T system section 1 is stopped, and step S1
Proceed to the next process in step 3.

Note that in the C case 12, step N2
If it is confirmed that the recording mode is not set, the process directly advances to step N9 and another process other than the recording operation is executed.

[0035]

As described above, according to the recording/reproducing apparatus of the present invention, main data reproduced from a magnetic tape by a digital audio tape recorder can be recorded on a recording medium by another recording apparatus in synchronization with the reproduction operation. When recording, during a skip period from when the digital audio tape recorder reads a skip identifier until it reads the next start identifier, a control signal is given from the control means to the recording device to set it in a recording standby state, Since the recording device is set to a recording standby state, an unintended unrecorded portion may occur in the middle of the main data recorded on the recording medium by this recording device due to skip playback of the digital audio tape recorder. can be avoided.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the basic configuration of a recording/reproducing apparatus that is an embodiment of the present invention.

FIG. 2 is a flowchart showing a recording operation by the recording/reproducing apparatus of the embodiment.

[Explanation of symbols] 1 DAT system department 3 Magnetic tape 9 DAT system control circuit 10 Analog output terminal 12 C case 18 Input terminal 21 C cassette control circuit

Claims (1)

[Claims] [Claim 1] As subcode data, a start identifier indicating the start of the main data is placed at the beginning of the main data, and an indicator is placed at a position in the middle of the main data indicating that playback should be skipped to the next start identifier position. A recording/playback system in which a magnetic tape on which a skip identifier is recorded is played back by a digital audio tape recorder, and the played main data is recorded on a recording medium by another recording device in synchronization with the playback operation of the digital audio tape recorder. The apparatus is provided with a control means for supplying a control signal to the recording device for setting the recording device in a recording standby state from when the audio tape recorder reads the skip identifier to when the audio tape recorder reads the next start identifier. A recording/reproducing device characterized by: