JPH05182427A - Recorder and reproducing device - Google Patents

Abstract

PURPOSE:To display various kinds of information without requiring a plant and equipment investment by utilizing user's bits of a TC track. CONSTITUTION:In a VTR controller 10, the information to be written into the TC track in accordance with a host control signal 13 is written in a writing area for absolute address and a user's bit area respectively of the TC track through a writing function part 11 for absolute address information and a writing function part 12 for send-out time information by synchronizing with a reference synchronous signal 15. At the time of reproduction, the data indicating the send-out time of a video signal recorded as time data stepping forward to each user's bit at a unit of prescribed time are read out by a TC reproducing function part and displayed. The send-out time information is thereby displayed without newly requiring the plant and equipment investment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention writes position information in a time code track, writes sending time information in the time code track, and reproduces at least the sending time information through the time code track during reproduction. Recording apparatus and reproducing apparatus that are used.

[0002]

2. Description of the Related Art In electronic editing and control such as insertion of commercials (hereinafter abbreviated as CM) to be inserted during a program, in order to improve inefficiency, which is difficult to edit, it is necessary to use a cue (CUE) as tape position information. The method of recording the tape address on the track is used. Initially, due to the inconvenience of using the address of each original format, a unified format was established in 1974, and the above format was adopted by the International Electrotechnical Commission (IEC: In
It is used as a ternational Electrotechnical Commission) standard.

The unified format is so-called SMPTE /
EBU (Society of Motion Picture and Television Engin
eerings / Europian Broadcasting Union) Timecode. This SMPTE / EBU time code (SMPTE / EB
(UTC) is a composite code of 12-hour or 24-hour time information and control information having a self clock of 80 bits per frame (see Table 1).

[0004]

[Table 1]

The time code No. in the longitudinal direction shown in Table 1 is shown. Bit (LTC: Longitudal Time Code, abbreviated as LTCC below) is
It consists of 64-bit time information, user's bits and 16-bit sync bits in one frame. In addition, the time code (VIT
(C: Vertical Interval Time Code, abbreviated as VITC below),
The 64-bit data of the above LTC is divided into 8-bit units and a sync (SYNC) bit is added, and an 8-bit CRC (Cycl)
90-bit signal with ic redundancy check code added is recorded twice in one field. The operation efficiency can be improved by automatically switching and reading both signals.

The user's bit is used for recording a program code, tape number, reel number and the like.

A case where a CM is inserted between programs using this SMPTE / EBU time code will be described with some examples. By the way, recently, for example, a broadcasting station, which is a main internet station, continues broadcasting even after midnight and continues broadcasting until around 6 am. For this reason, this broadcasting station uses a 30-hour system as a time display that is continuously integrated even after midnight. The mainstream of editing machines is an interactive method using a monitor. In this case, the monitor will display the above-mentioned LTC and VI.
Information such as TC, current time, and sending time is displayed.

However, as described above, the absolute time information recorded on the tape in the SMPTE / EBU time code can be displayed only as the 12-hour or 24-hour time information. Therefore, as the first method, the sending time information after 24:00 is newly written in another writing track, for example, the cue track. That is, the method of writing the absolute address information and the transmission time information on each of the two tracks is adopted.

As a second method, for example, the broadcast time 6:00
"00 ^h : 00 ^m : 00" on one TC track based on minutes
^"s : 00 ^f " is preset, and using only the absolute time information after that, a start signal is output at a time slightly earlier than the desired transmission time, and the start signal is modulated and transmitted at the transmission time. is there.

Further, when the absolute time information of the TC track is used in the same manner as described above, the absolute time information is preset, and this information is supplied to an externally provided timer to be inserted by the transmission time information from the timer. There is a method to start playback in tune with the program to be played.

As a third method, for example, the transmission time information is preliminarily triple-written in one TC track, and the information of the transmission time of 6:00 and the CM title is surely read as in the above-mentioned example, and then, There is a method of displaying the above information on the monitor only when the stop code is detected.

As described above, there is an operation method for transmitting a program according to various transmission times using the TC code.

[0013]

By the way, in the above-mentioned first method, the sending time is used as a track for writing the cue track of the video tape recorder, but it is necessary to modify the video tape recorder in order to perform this writing. Occurs. The second method is a method of effectively using the absolute address information, but it is complicated in that it must be preset, and there is a problem in that a separate timer must be provided.

The third method is effective as a method in which the sending time information is written in the TC track and can be displayed on the monitor, but it is displayed only a few seconds before the sending time. I can't. Therefore, in this display period on only one TC track, the absolute address information cannot be displayed because the sending time is written in the area in which the absolute address information is written.

In view of the above-mentioned circumstances, the present invention provides a video tape recorder for modifying the apparatus itself by using one TC track, installing a timer for supplying sending time information from the outside, and providing a new TC track. It is an object of the present invention to provide a recording device and a reproducing device capable of constantly displaying each information on a monitor without performing modification or the like.

[0016]

A recording device and a reproducing device according to the present invention are a recording device for recording a time code indicating a current position of the recording medium and a video signal on a recording medium, and each user's bit of the time code. In addition, there is no time code recording means for recording the transmission time information of the video signal recorded on the recording medium as time data for stepping by a predetermined time unit, and the time code indicating the current position of the recording medium. In a reproducing device for reproducing a recording medium on which a video signal is recorded, the data indicating the transmission time of the video signal recorded as time data in which each user's bit advances in a predetermined time unit is read and displayed on the display device. As a result, the above-mentioned problems are solved.

Here, the reproducing apparatus includes reproducing means for reproducing the video signal from the recording medium, and superimposing means for superimposing the data indicating the sending time on the output signal of the reproducing means. The operability and the like of the device are further enhanced by displaying the output signal of the above-mentioned on the display device.

[0018]

The recording device and the reproducing device according to the present invention write the sending time information to the user's bits provided in 8 groups of 4 bits in the format of the SMPTE / EBU time code in the TC track and send it to the monitor. Display time information continuously.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a recording device and a reproducing device according to the present invention will be described below with reference to the drawings.

The recording apparatus according to the present invention shown in FIG. 1 is a recording apparatus for recording a time code indicating a current position of the recording medium and a video signal on the recording medium, wherein each user's bit of the time code is the recording medium. VT which is a time code recording means for recording the transmission time information of the video signal recorded on
It is composed of the R controller 10.

The VTR controller 10, together with the absolute address writing function unit 11 for writing the absolute address information indicating the current position of the recording medium, is the time for stepping forward the sending time information to the user's bit in a predetermined time unit together with the absolute address writing function unit 11. The sending time writing function unit 12 records the data as data.

In the absolute address writing function 11, a host control signal from a host computer (not shown) is supplied via the input terminal 13. This host control signal is sent to the absolute address setting function unit 111 via the interface circuit 14.
And to the sending time setting function unit 121 in the sending time writing function unit 12. For each of these functional units, one of the functional units 111 and 121 is selected by, for example, mode designation from a host control signal, and an initial value is set for each.

The absolute address setting function unit 111 supplies the set value to the TC value free-run unit 112. This TC value free-run section 112 is the SMPTE / EB shown in Table 1.
U In each unit in the time code 1's place frame 4 bits 10's place frame 2 bits 1's place second 4 bits 10's place second 3 bits 1's place minute 4 bits 10's place minute 3 bits 1 The time information for supplying the absolute position of the video signal and the audio signal recorded on the respective tapes is supplied to 4 bits when the digit is 2 bits and 2 bits when the digit is 10 and a total of 26 bits. Each area will have absolute information at the tape position. These pieces of information can be expressed as, for example, "00 ^h : 00 ^m : 00 ^s : 00 ^f ". If this absolute address is used, it can be used even when a plurality of tapes are synchronously operated.

The sending time setting function unit 121 also supplies a signal to the user bit pre-setting unit 123 via the sending time increment function unit 122. The reference synchronizing signal is supplied to the second synchronizing signal supplying section 124 in the sending time writing function section 12 via the input terminal 15. The second synchronization signal supply unit 124 supplies a reference clock to the transmission time increment function unit 122 and the TC generation unit 16 to indicate the operation. The sending time increment function unit 12
2 performs a process of determining a unit for stepping. The step-up unit, for example, the step-up signal in units of seconds is sent to the user bit pre-setting unit 123 in the TC generation unit 16. Note that the TC generation unit 16 uses the TC value free-run unit 112.
And the user bit pre-setting unit 123.

The user bit pre-setting unit 123 writes the information about the sending time in this area using 32 bits of the binary groups 1 to 8 consisting of 4 bits in the SMPTE / EBU time code shown in Table 1. There is. As a result, the transmission time information based on the initial value is, for example, “00” by using the data in the user bit area at the time of reproduction as described later.
It can be expressed as ^h : 00 ^m : 00 ^s : 00 ^f ”. Information on frames may be deleted from the transmission time information in order to use the user bits efficiently.

The transmission time data to be written in the user bit area in order to perform such display uses the user bits of 2 frames. In addition, assuming that it should be the case, the transmission time data is recorded multiple times, for example, one piece of transmission time information is recorded 20 times.

With the above construction, the TC generator 16 outputs the TC having the absolute address information and the transmission time information through the output terminal 17. The time data for advancing in units of this predetermined time is written in the recording medium.

Next, the reproducing apparatus according to the present invention is shown in FIG.
Description will be made with reference to the functional blocks shown in FIG. The reproducing device is a reproducing device for reproducing a recording medium on which a time code indicating the current position of the recording medium and a video signal are recorded,
A TC reproduction function unit 21 for reading out data indicating a transmission time of a video signal recorded as time data in which each user's bit advances in a predetermined time unit, and a superposition function unit 22 for displaying on a display device. There is.

A time code (hereinafter abbreviated as TC) previously recorded on the recording medium on the TC track via the input terminal 20 is supplied to the TC read function unit 211 in the TC reproduction function unit 21 as a reproduction TC. The TC read function unit 21
1 is a TC indicating absolute address information from the supplied reproduction TC
The value and the TC value indicating the sending time information are separately reproduced. TC value indicating absolute address information is output terminal 2
It outputs through 2. The TC value indicating the transmission time information is supplied to the time information reproduction function unit 212. The time information reproducing function unit 212 reproduces the transmission time information from the TC value indicating the supplied transmission time information and supplies it to the superposition function unit 23.

The superimposing function section 23 outputs a video signal which can form a screen in which the supplied sending time information and the reproduced video signal supplied via the input terminal 24 are superposed.
5 to the display device 26.

The display device can also simultaneously and continuously display the sending time information on the screen by the supplied video signal.

With this configuration, it is necessary to modify the reproducing apparatus to read out the sending time information recorded on another track, and to output the sending time information via another device such as a timer. Without, the system can be simplified. Further, it becomes possible to supply information tailored to the user's request by using the user bit. For example, it is possible to easily cope with the 30-hour system of sending time information and to supply title information and the like.

More specifically, the system configuration of the apparatus will be described with reference to FIG. The reproducing apparatus includes a video tape recorder section 33, which is a reproducing means for reproducing the video signal from the recording medium, and the video tape recorder 3.
V having a superimposing circuit 321 which is a superimposing means for superimposing the data indicating the transmission time on the output signal of No. 3
The TR controller 32 is used.

The reproducing apparatus is a host computer 31.
To the VTR controller 32 from, for example, a studio remote (STUDIO REMOTE) or audio signal (AUX). Further, the VTR controller 32 inputs reproduction TC from the TC output terminal of the video tape recorder unit 33 and character information from the character output terminal.

The character information is information such as the transmission time information recorded in the user's bit as described above.
The character information is superimposed on the superimposing circuit 321 while synchronizing with the reference video synchronizing signal supplied through the input terminal 30. This video signal is VTR
From the character image output terminal of the controller 32 to the monitor 34
Is supplied to. The monitor 34 continuously displays the transmission time information, such as the elapsed time from the reference time and the information on the next transmission time, which is superimposed on the video.

During recording, the VTR controller 32 supplies TC from the TC output terminal to the TC input terminal of the video tape recorder unit 33.

By thus considering the writing to the TC track and the reading of the reproduction TC, since the tracks other than the TC track are not used, the other tracks can be effectively used. Further, since no new device is installed or the device itself is not modified, it is possible to display the sending time information without the need for capital investment, and it is possible to simplify the system of the recording device and the reproducing device itself. it can.
Accidents such as breakdowns can be reduced by this simplification. By using the user's bit in the recording device and the reproducing device, it is possible to easily and sufficiently correspond to the 30-hour system used in, for example, a broadcasting station.

[0038]

As is apparent from the above description, according to the recording apparatus and the reproducing apparatus of the present invention, in the recording apparatus for recording the time code indicating the current position of the recording medium and the video signal, There is no time code recording means for recording, in each user's bit of the time code, the transmission time information of the video signal recorded on the recording medium as time data for advancing in a predetermined time unit, and the recording medium. In a reproducing device for reproducing a recording medium on which a time code indicating the current position and a video signal are recorded, data indicating the transmission time of the video signal recorded as time data stepped in a predetermined time unit in each user's bit is recorded. By reading and displaying it on the display device, tracks other than the TC track are not used, so other tracks can be used effectively. It can be.

Further, the reproducing apparatus includes reproducing means for reproducing the video signal from the recording medium, and superimposing means for superimposing the data indicating the sending time on the output signal of the reproducing means. By displaying the output signal on the above display device, the operability of the device is further enhanced, and since the new device is not installed or the device itself is not modified, the delivery time information is displayed without the need for capital investment. Therefore, the system of the recording device and the reproducing device itself can be simplified. Accidents such as breakdowns can be reduced by this simplification.

By using the user's bit in the recording and reproducing apparatus, it is possible to easily and sufficiently correspond to the 30-hour system used in a broadcasting station, for example.

[Brief description of drawings]

FIG. 1 is a diagram showing a schematic functional block configuration in an embodiment of a recording apparatus according to the present invention.

FIG. 2 is a diagram showing a schematic functional block configuration in an embodiment of a reproducing apparatus according to the present invention.

FIG. 3 is a diagram showing a more specific system configuration based on the functional block configurations shown in FIGS. 1 and 2.

[Explanation of symbols]

 10 ・ ・ ・ ・ ・ ・ ・ ・ VTR controller 11 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Absolute address writing function unit 12 ・ ・ ・ ・ ・ ・ ・ ・Sending time writing function unit 21 ・ ・ ・ ・ ・ ・ ・ ・ TC playback function unit 23 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Superposition function unit 26 ・ ・ ・... Display device

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] July 2, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction content]

The user's bits are CM frame numbers.
No., tape number, is used for recording, such as a reel number.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction content]

As a third method, for example, transmission start time information is written in advance in front of the top code in one TC track, and the transmission time of 6:00 and the CM title are recorded as in the above example. There is a method of displaying the above information on the monitor only when the information is surely read and the stop code is detected next time.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction content]

In the third method, the TC track is added.
It is effective as a method that can be displayed on the monitor because the sending start time information is written, but during playback
It is not possible to display the progress of the sending time of .

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction content]

The transmission time data to be written in the user bit area in order to perform such display uses the user bits of 2 frames. In addition, assuming that it should be the case, the transmission time data is recorded multiple times, for example, one transmission time information is recorded five times .

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0034

[Correction method] Change

[Correction content]

The reproducing apparatus is a host computer 31.
From VTR controller 32 to, for example, studio remote
(STUDIO REMOTE and AUX) are supplied. Further, the VTR controller 32 inputs reproduction TC from the TC output terminal of the video tape recorder unit 33 and character information from the character output terminal.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0035

[Correction method] Change

[Correction content]

The character information is information such as the transmission time information recorded in the user's bit as described above.
The character information is superimposed on the superimposing circuit 321 while synchronizing with the reference video synchronizing signal supplied through the input terminal 30. This video signal is VTR
It is supplied to the monitor 34 from the character image output terminal of the controller 32 . The monitor 34 continuously displays the transmission time information, such as the elapsed time from the reference time and the information on the next transmission time, which is superimposed on the video.

Claims (3)

[Claims] 1. A recording device for recording a time code indicating a current position of the recording medium and a video signal on a recording medium, wherein at each user's bit of the time code, transmission time information of the video signal recorded on the recording medium. The recording device is characterized by comprising a time code recording means for recording as time data for stepping in a predetermined time unit. 2. A reproducing apparatus for reproducing a recording medium on which a time code indicating a current position of the recording medium and a video signal are recorded, and a video signal recorded as time data stepping by a predetermined time unit in each user's bit. A reproducing apparatus characterized in that the data indicating the sending time of is read out and displayed on a display device. 3. The reproducing device comprises reproducing means for reproducing the video signal from the recording medium, and superimposing means for superimposing data indicating the sending time on an output signal of the reproducing means. 3. The reproducing apparatus according to claim 2, wherein the output signal is displayed on the display device.