JPH06139756A - Recording and reproducing system - Google Patents

Abstract

PURPOSE:To perform a lot of automatic operations without providing any large capacity memory. CONSTITUTION:A signal from any arbitrary keyboard 7 is supplied to a control circuit 8, and a sub code is formed. The data of this sub code are supplied through a RAM 9 to a pack generation circuit 10, supplied through a framing circuit 12, synthesizing circuit 6, PTG circuit 13 and channel coding circuit 14 to a head 16 on a rotary drum 15 and recorded in a magnetic tape 17. On the other hand, a signal reproduced from this magnetic tape 17 is supplied through an equalizer and TBC circuit 18, ECC circuit 19, decomposing circuit 20, deframing circuit 26 and pack decomposition circuit 27 to the control circuit 8, and control is performed according to the sub code. Further, a signal from the control circuit 8 is passed through an external equipment interface 31 and extracted to a control input/output terminal 32, and a signal from the control input/output terminal is supplied through the interface 31 to the control circuit 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing system such as a digital VTR for recording and reproducing sub-code data together with original data.

[0002]

2. Description of the Related Art For example, in a digital VTR, subcode data is recorded and reproduced along with original data. Here is a subcode like this:
Areas are separately recorded on the same track as the original data, and they are recorded or reproduced simultaneously or independently.

By the way, in a recording / reproducing system for video signals and the like, for example, a system called LANC for controlling devices is implemented. Ie such LA
By using the NC system, continuous recording / playback by a plurality of VTRs, editing, and control of other audio equipment can be performed.

In such a LANC system, conventionally, for example, an arbitrary VTR is used as a main device and a LANC signal output from this main device is distributed to each subordinate device for control. Therefore, for example, when performing an automatic operation, a LANC signal is stored in a memory in the main device, and a LANC signal sequentially output from this memory using a timer or the like is distributed to each subordinate device. .

Therefore, in the conventional device, the number of automatic operations is limited to the memory in the main device, and a large-capacity memory is required to perform many operations. However, it is not desirable to provide a large amount of memory for such ancillary functions. Further, it is not preferable for a consumer device to separately provide a control device or the like having a large capacity external memory. This application is made in view of such a point.

[0006]

The problem to be solved is that the conventional device requires a large capacity memory in order to perform many operations.

[0007]

According to a first aspect of the present invention, in a recording / reproducing system in which sub-code data is recorded / reproduced together with original data, an operation control code is provided in the sub-code. The recording / reproducing system is characterized in that the operation control code is discriminated to control the operation (control circuit 8) and the operation control code is output to the outside (external device interface 31).

A second means according to the present invention is the recording / reproducing system according to the first means, which comprises a recording medium (magnetic tape 17) on which data including the operation control code is recorded.

The third means according to the present invention controls the operation (control circuit 8) by reproducing and discriminating the operation control code provided in the sub-code, and outputs this operation control code to the outside (external The recording / reproducing system according to the first means comprises a reproducing apparatus adapted to perform an equipment interface 31).

The fourth means according to the present invention controls the operation (control circuit 8) by reproducing and discriminating the operation control code provided in the sub-code, and outputs this operation control code to the outside (external The recording / reproducing system according to the first means comprises a recording device that records the original data while using the device interface 31).

According to a fifth aspect of the present invention, in a recording / reproducing system in which sub-code data is recorded / reproduced together with original data, an end code is provided in the sub-code, and the end code is discriminated. In this case, the recording / reproducing system is characterized in that the recording medium is rewound (control circuit 8).

According to a sixth aspect of the present invention, in a recording / reproducing system in which subcode data is recorded / reproduced together with original data, an operation control code is provided in the subcode, and the subcode of the camera and its peripheral devices are provided. An operation is detected, the operation control code is formed and recorded as the sub-code, and the operation control code is reproduced to reproduce the operation of the camera and its peripheral devices to record the original data. It is a recording / reproducing system characterized in that

[0013]

According to this, by reproducing the operation control code provided in the sub-code to control the operation and outputting the operation control code to the outside, a large number of memory can be provided without providing a large capacity memory. Automatic operation can be performed.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of a structure in which a recording / reproducing apparatus forming the system of the present invention is applied to a digital VTR. In the figure, reference numeral 1 is a video signal input terminal, and a signal from this input terminal 1 is supplied to a blocking circuit 3 through an A / D conversion circuit 2. The signal from the blocking circuit 3 is supplied to the bit compression encoder 4, and the bit compressed signal is supplied to the synthesizing circuit 6 through the framing circuit 5.

Further, a signal from an arbitrary keyboard 7 is supplied to the control circuit 8 to form a sub code. The subcode data is stored in the RAM 9, and the subcode data from the RAM 9 is supplied to the pack generation circuit 10. Further, data indicating the absolute time from the tape start end, for example, from the absolute address generation circuit 11 is supplied to the pack generation circuit 10. The signal from the pack generation circuit 10 is supplied to the synthesis circuit 6 through the framing circuit 12.

Further, the signal synthesized by the synthesis circuit 6 is the PTG circuit 13 and the channel coding circuit 14.
Is supplied to the head 16 on the rotating drum 15.
Then, it is recorded on the magnetic tape 17 transported around the rotary drum 15. A signal is reproduced by the head 16 on the rotary drum 15 from the magnetic tape 17 transported around the rotary drum 15. The reproduced signal is supplied to the decomposition circuit 20 through the equalizer and TBC circuit 18 and the ECC circuit 19.

The signal decomposed by the decomposition circuit 20 is passed through a deframing circuit 21 to a bit compression decoder 2
2 is supplied. The signal from the decoder 22 is supplied to the block decomposition circuit 23, and the decomposed signal is taken out to the video signal output terminal 25 through the D / A conversion circuit 24.

The signal decomposed by the decomposition circuit 20 is supplied to the pack decomposition circuit 27 through the deframing circuit 26, and the decomposed signal is supplied to the control circuit 8 to perform control according to the subcode. That is, a signal from the control circuit 8 is supplied to the display device 28 to display.
A signal from the control circuit 8 is supplied to the mode control circuit 29, and a signal from the mode control circuit 29 is supplied to the mechanism control circuit 30 to control the rotation of the drum 15 and the rotation of the capstan (not shown). To be done.

Further, the signal from the control circuit 8 is supplied to the external equipment interface 31, and the signal from this interface 31 is taken out to the control input / output terminal 32.
Further, the signal from the control input / output terminal 32 is supplied to the interface 31, and the signal from the interface 31 is supplied to the control circuit 8.

Then, in this apparatus, the recording of the subcode is performed as follows, for example. That is, as shown in A of FIG. 2, the subcode is recorded in a specific area on the same track as the original data, and is recorded / reproduced simultaneously or independently of the original data.

Further, this sub-code is, for example, B in FIG.
As shown in, it is formed of 6-byte data. And the first 1 byte is the category code data,
For example, [01] _H ([**] _H is a hexadecimal value) is V
TR (own device), [02] _H is a camera, and [03] _H is a tuner. [11] _H is a peripheral device (for example, monitor), [12] _H is a peripheral device (for example, tripod), [1]
3] _H is a peripheral device (for example, an external tuner).

The second 1 byte is used as operation command data, for example, the category code is [01] _H (VT
R),

[00] _H is power on, [01] _H is no tape, [02] _H is stop, [04] _H is recording,
[06] _H is reproduced. When the category code is [11] _H (monitor),

[00] _H is turned on and [01] _H is turned off. Further, when the category code is [12] _H (tripod), [01] _H is upward, [02] _H is downward, [03] _H is right,
[04] _H is to the left, [05] _H is tilt upward, [0
6] _H is tilted downward.

Further, the 3rd to 6th 4 bytes are extended data, for example, the category code is [01] _H (VT
At the time of R), when the operation command is [02] _H stop, and the subsequent subcodes such as fast forward and rewind cannot be obtained, the time until the end of the operation command and the category code are [12] _H Data such as the distance and angle of movement when the (tripod) is used is provided. The above category code data, operation command data, and extension data are all examples, and other than these, they can be applied to various peripheral devices and the like.

Therefore, in this apparatus, if the contents to be operated are recorded in advance in the subcode of the magnetic tape 17, the operation according to the subcode can be performed only by inserting the magnetic tape 17 into the VTR. You can In this case, since the content of the operation is recorded in the subcode of the magnetic tape 17, a large number of operations can be performed without considering the memory capacity and the like. Further, in this device, the reproduced sub-code can be supplied to the device through the external device interface 31 and the control input / output terminal 32 to control the operation thereof.

That is, in this device, the magnetic tape 1
In the 7 subcode, operation command data such as reproduction, fast forward, and rewind are arbitrarily recorded. As a result, the order of the video signals recorded on the magnetic tape 17 can be changed and reproduced, or unnecessary portions can be deleted and reproduced.

Alternatively, in a VTR with a built-in camera,
It is possible to automatically perform operations such as zooming of the camera unit and switching of monitor screens. This allows, for example, unattended demonstration of a new camera-integrated VTR product.

Thus, according to the above-mentioned device, the operation control code provided in the sub-code is reproduced to control the operation, and the operation control code is output to the outside to provide a large capacity memory. Instead, a large number of automatic operations can be performed.

In the above apparatus, the magnetic tape 17
The procedure for arbitrarily recording the operation command data in the sub-code is performed as shown in FIG. 3, for example. That is, in the figure, for example, the operation is started by the input of the setting switch. Then, in step [1], the recording standby state of the sub code area is set, and in step [2], key input is awaited.

Next, in step [3], the contents of the key processing are judged, and if the key is the end key, the operation is ended. If it is the start key, the process proceeds to step [4]. If it is neither the end nor the start, the process returns to step [2]. In step [4], the subcode area is recorded, and in step [5], the start position data is recorded in the subcode area.

In step [6], key input is awaited, and in step [7], the contents of key processing are judged. When the end key is pressed, the end position data is recorded in the sub code area in step [8],

In step [9], the sub-code area is set to the recording standby state, and in step [10], it is rewound and returned to the above-mentioned start position.

On the other hand, if the operation key is selected in step [7], the content of the key processing is detected in step [11]. Then, in the step [12], if the key is for the tape running system operation,
In step [13], the recording standby state of the sub code area is set. Further, time data is input in step [14]. Then, in step [15], the subcode area is recorded, and in step [16], the operation command and time data are recorded in the subcode area.

If a key other than the tape running system operation is selected in step [12], the operation is executed in step [17]. Then, in step [18], the operation command is recorded in the sub code area. Further step [16] [1
After 8], the operation is returned to step [6]. In this way, the operation command data can be arbitrarily recorded in the subcode of the magnetic tape 17.

Further, as the operation command data of this sub code, for example, an end code can be provided.
By recording this end code in the end portion of the program of the rental video software, for example, when the reproduction of the rental video software reaches the end portion of the program, the magnetic tape is automatically rewound and rewound. The cassette can be ejected after the end.

As the peripheral device, for example, a structure as shown in FIG. 4 is used. That is, in the figure, a key switch 41, an operation unit 42, a controller 43,
An external control terminal 44 is provided.

When an electric tripod is targeted as a peripheral device, the key switch 41 is a switch for operating the tripod base in the up / down direction, the left / right direction, and the tilt direction.
A so-called joystick or the like is used. In addition, the operating unit 42
Is a part that drives the tripod base with a motor or the like. Further, the controller 43 is a part that controls the operation unit 42 based on the information of the key switch. The above parts are provided on a normal electric tripod. The external control terminal 44 is connected to the controller 43.
Is provided.

Therefore, in this device, at the time of setting, a command of "setting" is first supplied from the VTR as the main device through the external control terminal 44. Next, when the key switch 41 performs any necessary operation, information on this operation is sent to the VTR through the external control terminal 44 and recorded as operation command data in the subcode of the magnetic tape. When the setting is further completed, the VTR supplies an "end" command through the external control terminal 44, and the external control terminal 44
Output is stopped.

In operation of this apparatus, a command of "execute" is first supplied from the VTR as the main apparatus through the external control terminal 44, for example. As a result, the input processing from the key switch 41 on the peripheral device side is prohibited, and the operation information supplied from the VTR through the external control terminal 44 is supplied to the controller 43, and the operation unit 42 is controlled based on this information. Done. This operation is performed until the "end" command is supplied from the VTR through the external control terminal 44. In this way, the peripheral equipment is automatically controlled.

Therefore, when the main device is, for example, a camera-integrated VTR and the peripheral device is, for example, an electric tripod, the operation of the "video self-timer" described below can be performed. That is, FIG. 5 is a diagram for explaining the flow of the operation. First, as a first step [A1], the "setting" switch of the camera-integrated VTR is pushed.

Then, in step [A2], the VTR and the electric tripod integrated with the camera are set to the start state. As a start state, a desired camera position, zoom position, etc. at the start of recording are set, and as a step [A3], the "start" switch of the camera-integrated VTR is pressed. In this state, as a step [A4], the VTR and the electric tripod integrated with the camera perform any desired recording operation and operation. That is, the actions and operations to be recorded are the height of the camera,
Performs operations and operations such as direction, tilt, zoom, and title insertion.

After these steps are completed, as a step [A5], the "end" switch of the camera-integrated VTR is pushed. Then, when the display of "already set" appears in step [A6],
Press the "Run" switch. By this, step [A
7] As a result, the camera-integrated VTR and the electric tripod are operated and operated according to the operation and operation desired to be recorded from the above-mentioned set starting state, and before that, the photographing and recording with the subject as a subject are performed. It can be carried out.

That is, at the time of setting, the operation command data is recorded only on the subcode portion of the magnetic tape, and at the time of execution, the operation command data of this subcode portion is reproduced to perform the shooting and recording while performing the set operation and operation. Be seen. As a result, the operation of the "video self-timer" corresponding to the self-timer of the conventional still camera can be performed.

The present invention is not limited to the digital VTR, but can be applied to an apparatus such as an 8 mm VTR in which a part of the signal is digitally recorded, and a digital format acoustic recording / reproducing apparatus such as DAT. Further, the recording medium is not limited to a tape, but can be applied to a disc. Furthermore, the present invention can be implemented only with a recording medium, a recording device, and a reproducing device.

[0043]

According to the present invention, the operation control code provided in the sub code is reproduced to control the operation, and the operation control code is output to the outside to provide a large capacity memory. It became possible to perform a lot of automatic actions without.

[Brief description of drawings]

FIG. 1 is a block diagram of an example of a digital VTR as a recording / reproducing system according to the present invention.

FIG. 2 is a diagram for explaining the explanation.

FIG. 3 is a diagram showing a flow of the processing.

FIG. 4 is a configuration diagram of an example of peripheral devices.

FIG. 5 is a diagram showing a flow of the operation procedure.

[Explanation of symbols]

 1 Video signal input terminal 2 A / D conversion circuit 3 Blocking circuit 4 bit compression encoder 5, 12 Framing circuit 6 Synthesis circuit 7 Keyboard 8 Control circuit 9 RAM 10 Pack generation circuit 11 Absolute address generation circuit 13 PTG circuit 14 Channel coding Circuit 15 Rotating drum 16 Head 17 Magnetic tape 18 Equalizer and TBC circuit 19 ECC circuit 20 Decomposition circuit 21, 26 Deframing circuit 22 Bit compression decoder 23 Block decomposition circuit 24 D / A conversion circuit 25 Video signal output terminal 27 Pack decomposition circuit 28 display device 29 mode control circuit 30 mechanism control circuit 31 external device interface 32 control input / output terminal

Claims (6)

[Claims] 1. A recording / reproducing system in which sub-code data is recorded / reproduced together with original data. An operation control code is provided in the sub-code, and the operation is controlled by discriminating the operation control code. A recording / reproducing system characterized in that the operation control code is output to the outside. 2. The recording / reproducing system according to claim 1, comprising a recording medium on which data including the operation control code is recorded. 3. A recording apparatus according to claim 1, further comprising a reproducing device adapted to reproduce and discriminate an operation control code provided in the sub-code to control the operation, and output the operation control code to the outside. Playback system. 4. The operation control code provided in the sub-code is reproduced and discriminated to control the operation, and the original data is recorded while the operation control code is output to the outside. The recording / reproducing system according to claim 1, comprising a recording device. 5. A recording / reproducing system in which sub-code data is recorded / reproduced together with original data. An end code is provided to the sub-code, and when the end code is discriminated, rewinding of the recording medium is performed. A recording / reproducing system characterized by performing the following. 6. A recording / reproducing system in which sub-code data is recorded / reproduced together with original data, and an operation control code is provided in the sub-code to detect the operation of the camera and its peripheral equipment to perform the operation. A control code is formed and recorded as the sub-code, and the operation control code is reproduced to reproduce the operation of the camera and its peripheral devices to record the original data. Recording / playback system.