JP5394169B2 - Recorded video monitoring device for television camera and recorded video monitoring method for television camera - Google Patents

Description

  The present invention relates to a television camera with a recording device used for news gathering and the like, and more particularly to an apparatus and method for monitoring recorded images of other television cameras when recording materials using a plurality of television cameras.

  In news stations such as news reports, video and audio signals that are material are recorded on a television camera with a recording device, edited in the studio, and broadcast as news. As a recording medium of a recording apparatus, a tape typified by a VTR has been mainstream in the past. However, a recording medium that does not include mechanical elements such as a hard disk and an IC memory is becoming mainstream. Since the hard disk and IC memory can be accessed randomly, there is an advantage that it is easy to edit.

  Now, in the case of such news coverage, not only a single TV camera is imaged, but a plurality of TV cameras are used to shoot from various directions, and an image preferred by the viewer is selected from each TV camera. Create broadcast video. At this time, for example, when two television cameras are used, there is a case where it is anxious what kind of image is being captured by the other television camera.

  Usually, the captured video can be grasped using voice such as income, but there are also points that are difficult to understand only by voice. If you look at the video, no explanation is required. In addition, if one TV camera is fixed and the image is taken, one cameraman is sufficient, but what kind of video signal is recorded even when remotely operated is clearly apparent until the recorded video is viewed. I can't figure it out.

  As a prior example for solving such problems, for example, in Patent Document 1, three television cameras are prepared and imaged, and images are selected by wirelessly transmitting video from the other two cameras. A technique for recording in one television camera is disclosed. Furthermore, the time code is used for material recording, but the time code is not always correct in the case of a plurality of television cameras, and the time code may be corrected at the stage of editing.

JP 2008-199266 A

  The technique of Patent Document 1 described above enables recording of video from another TV camera with one TV camera, and is not for material gathering used at a broadcasting station. In addition, there is no description when the wireless module is not used, that is, when it is used as a normal one television camera. The present invention detects the presence / absence of a wireless interface and has a monitoring function for other TV cameras when “present”, and the time code of the other TV camera matches, and when “no”, for normal coverage It is an object of the present invention to provide a recorded video monitoring device for a television camera that can be used as a television camera and a recorded video monitoring method for the television camera.

In order to cope with the above-described problems, the present invention takes the following technical means.
That is, the invention described in claim 1 is a recording of a television camera having an imaging means for outputting imaging data by imaging an imaging object and enabling data transmission / reception with an external recorded video monitoring device. A video monitoring apparatus, wherein a time code generating means for generating a time code at the time of imaging by the imaging means, a recording for recording the imaging data output by the imaging means and the time code generated by the time code generating means A video signal is created from the imaging data output from the imaging means and the time code generated by the time code generating means when recording the imaging data, and recorded in the recording means when reproducing the imaging data Display control means for creating a video signal from the captured image data and time code, and the video created by the display control means The camera display means for displaying the video based on the number, the wireless adapter for transmitting and receiving data between the recorded video monitoring device of the external TV camera, and the connection of the wireless adapter in the recorded video monitoring device of the TV camera. Connection detecting means for detecting, transmission data creating means for compressing the video signal created by the display control means to create transmission data, the time code generating means, the transmission data creating means, the wireless adapter, the connection And a camera control means for controlling the display control means, and when the connection detection means detects the connection of the wireless adapter, the camera display means monitors the recorded video of the external television camera. Device identification information is displayed, and the display control means is adapted to display the video signal when the wireless adapter is connected to the external television. Synthesizes the video signal generated by the data received from the recording video surveillance device camera based, it is displayed on the camera display unit, to transmit the transmission data to the recording image monitoring apparatus of the external television camera This is a recorded video monitoring device for a television camera.

The invention described in claim 2 is the recorded video monitoring device of the television camera according to claim 1, wherein the transmission data creating means uses the recording or reproduction tally signal obtained from the recording means as bitmap information. It has a bit map conversion means for conversion .

Furthermore, the invention according to claim 3 obtains imaging data by imaging an imaging target, and uses a wireless adapter to transfer the imaging data and other data accompanying it to an external recorded video monitoring device. In a recorded video monitoring method of a television camera that performs transmission and reception, in the connection detection step of detecting the connection of the wireless adapter in the recorded video monitoring device, and when the connection of the wireless adapter is detected in the connection detection step A destination selection step for selecting a destination of data by the wireless adapter, and a data management step for executing the following steps (1) to (6) when a destination of data is selected by the destination selection step And a recorded video monitoring method for a television camera.
(1) A step of generating transmission data by compressing the image data and setting the transmission data and a time code generated by the transmission source to transmittable data. (2) A recording or reproduction tally generated by the transmission source. A step of converting a signal into bitmap information. (3) Transmitting and receiving the transmission data, a time code generated by the transmission source and the bitmap information by the wireless adapter, and receiving reception data from the transmission destination. Step (4) Obtaining compressed image data of a destination from the received data and displaying it on a display device (5) Obtaining bitmap information of the destination included in the received data and displaying it on the display device A bitmap display step (6 When the destination time code included in the received data is acquired and compared with the time code generated by the source, and the time code generated by the source is ahead of the time code of the destination, Converting the time code generated by the source to the time code of the destination

Furthermore, the invention according to claim 4 is the recorded video monitoring method of the television camera according to claim 3 , wherein the bitmap display step is performed only when the destination is controlled by remote operation of the destination. When the destination tally signal is analyzed from the bit map information and the destination tally signal is different from the source tally signal, the source tally signal is the same as the destination tally signal. It further has a tally signal control step for controlling as described above.

  According to the first aspect of the present invention, the connection detection means for the wireless adapter is provided in the general television camera, so that when the wireless adapter is attached, it can be used as an interlocking television camera system with an external television camera. When the wireless adapter is not attached, it can be used as a normal TV camera for coverage by one unit, so that one TV camera can be used frequently. In addition, the display data control means enables different display between normal video display when one TV camera is used alone and video display when linked TV is used when two TV cameras are used.

According to the second aspect of the present invention, the recording means generates the recording and reproduction information of the imaging data as a recording tally signal or a reproduction tally signal, and converts the signal into bitmap information. When the bitmap information is received on the side, the image can be displayed as it is, and the configuration on the receiving side can be simplified. In addition, when recording a video signal in an external USB (Universal Serial Bus) memory, there is an effect that it can be recorded as it is for bitmap information .

According to the invention of claim 3 , the connection of the wireless adapter in the recorded video monitoring device is detected, and when it is “connected”, the captured image of the destination (the other party) is selected according to the recording operation of the destination television camera. Since it is possible to display the image with a color frame, it is possible to grasp what kind of video the destination is shooting and also to grasp the operation of the recording unit. Further, according to the invention of claim 4 , since the video monitoring device of the transmission source (own side) can be controlled (imaging or playback control) according to the tally signal generated by the recording means of the transmission destination, the TV camera is fixed. Thus, it is possible to shoot unattended and one person can shoot two TV cameras. Further, it is possible to control only the recording means from the destination.

It is a block diagram of the recorded video monitoring device of the television camera of the present invention. It is a flowchart in the 1st Example of the recorded image monitoring method of the television camera which concerns on this invention (the 1). It is a flowchart in the 1st Example of the recorded image monitoring method of the television camera which concerns on this invention (the 2). It is a flowchart in the 2nd Example of the recording video monitoring method of the television camera which concerns on this invention (the 1). It is a flowchart in the 2nd Example of the recorded image monitoring method of the television camera which concerns on this invention (the 2). It is the flowchart in the 2nd Example of the recorded image monitoring method of the television camera which concerns on this invention (the 3). In the display example of the camera display means when recording with two TV cameras, (a) shows the video of the camera display means of the recording video monitoring apparatus of the sending source, and (b) shows the recording video monitoring apparatus of the sending destination. The image of the camera display means is shown.

  An embodiment of a recorded video monitoring apparatus for a television camera according to the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a recorded video monitoring device for a television camera according to the present invention. 10 is a recorded video monitoring apparatus, 100 is an imaging means, 101 is a recording means, 102 is a camera display means, 103 is a time code generation means, 104 is a display control means, 105 is a camera control means, 106 is a transmission data creation means, 107 Indicates a connection detection means, 108 indicates an operation panel, and 109 indicates a wireless transmission / reception unit. A dotted line including the wireless transmission / reception unit 109 indicates a wireless adapter.

  The imaging means 100 has a solid-state imaging device, performs photoelectric conversion by the solid-state imaging device, performs camera signal processing, and outputs a video signal. The recording unit 101 records the imaging data that is the output of the imaging unit 100 and the time code generated by the time code generating unit 103. Then, at the time of reproducing the imaging data, the recorded imaging data and time code are output.

  When used as a control item or an interlocked television camera system, the camera display means 102 displays the identification information of the recorded video monitoring device of the destination, and the operator can select the listed identification information. Yes. Then, the selection result is output to the display control means 104. The camera display means 102 is composed of a liquid crystal monitor. Next, the time code generating means 103 generates a time code. The time code is defined by the usual “00: 00: 00: 00”, and these mean hour: minute: second: frame number. The time code generating means 103 is composed of an oscillator and a counter.

  Subsequently, the display control means 104 creates a video signal and outputs it to the camera display means 102. When the TV camera is used in an interlocked manner, the imaging data from the imaging means 100 via the recording means 101 and the time code generated by the time code generating means 103 are recorded when the imaging data is recorded, and the recording means is recorded when the imaging data is reproduced Since the imaging data and time code recorded in 101 are output, a video signal is created from them. Then, the generated video signal and the received data received from the transmission destination from the wireless transmission / reception unit 109 are combined and displayed on the camera display unit 102. The reception data here means data including imaging data, a time code, and bitmap information described later. An example of the composite image is shown in FIG. Further, the display control means 104 outputs the created video signal as a display image signal (capture video signal) to the transmission data creation means 106.

  When the television camera is used alone, when recording the imaging data, the imaging data output from the imaging unit 100 via the recording unit 101, the time code generated by the time code generation unit 103, and the reproduction of the imaging data At that time, a video signal to be displayed is created based on the imaging data and time code recorded in the recording means 101.

  Further, the camera display unit 102 can display identification information and camera control items of the destination recorded video monitoring device under the control of the camera control unit 105. When an operator or the like selects identification information or a camera control item of a destination recorded video monitoring apparatus, the camera display means 102 can output the selection result to the camera control means 105.

  The camera control means 105 can send and receive time codes to and from the time code generation means 103. When operating the television camera in an interlocking manner, the time code data is sent to the destination, so the time code at the time of transmission is set. When the transmission / reception unit 109 obtains the transmission and obtains the destination time code from the wireless transmission unit 109, the time code generated by the transmission time code generation means 103 is ahead of the transmission time code. In this case, the time code generation means 103 of the transmission source is controlled to match the time code of the delayed transmission destination.

  Further, the camera control unit 105 causes the display control unit 104 to control the display image of the camera display unit 102 by the television camera alone or in conjunction with each other, and selects control items and destinations (in the case of the interlocking type) (identification information). Operator) can be selected. And the selection result can be received. Further, a recording or reproduction control signal is output to the recording unit 101 based on an operation from the operation panel 108. Then, the recording unit 101 generates a tally signal. This tally signal means a recording tally signal or a playback tally signal. In general, a tally signal is being controlled when the controlled means receives the control signal and performs its control operation. It is a signal that means being. In the present invention, this recording or playback tally signal is defined as, for example, a red video frame for a recording tally and a blue video frame for a playback tally, and bitmap information is created from these signals. The camera control means 105 controls the transmission data creation means 106. Even when the recording unit 101 is stopped, a stop tally signal is output and the video frame is black.

  In addition, when the connection detection unit 107 detects the connection of the wireless adapter, the camera control unit 105 receives a trigger signal from the connection detection unit 107 and performs control to switch the entire TV camera to the operation of the interlocking TV camera system. . Further, when a trigger signal is received from the connection detection unit 107, the wireless transmission / reception unit 109 is controlled to detect whether or not the wireless adapter is a wireless interface. In the case of Bluetooth (registered trademark), since there is an authentication code, control is performed so that the authentication code is detected.

  The transmission data creation means 106 creates transmission data based on the video signal transmitted to the destination through the wireless transmission / reception unit 109. Among the transmission data, the imaging data is controlled so as to be compressed and sent with the number of pixels smaller than the imaging data from the imaging unit 100 or the recording unit 101. This is because there is no problem even if compression is performed because the destination is used for monitoring. The compression rate is preferably set to 1/2 or more. Also, a recording tally signal or reproduction tally signal generated by the recording means 101 is converted into bitmap information by a bitmap conversion means (not shown) provided in the transmission data creation means 106 and added to the video signal. For example, red is used for recording tally signals, blue is used for playback tally signals, and black is used for stop signals, and the color information is converted to a bitmap with a frame size of 320 dots x 240 dots and a width of 5 dots. It is preferable to create bitmap information.

  Subsequently, the connection detection unit 107 is controlled to detect the presence or absence of connection (connection of a wireless adapter) in the recorded video monitoring device 10 of the wireless transmission / reception unit 109. For example, the detection can be performed based on whether or not a power source is connected to the wireless transmission / reception unit 109. If it is detected that the power is connected, a trigger signal is output to the camera control unit 105. Yes. The operation panel 108 is a panel composed of operation switches, and those necessary for the operation of the television camera, the operation of the recording means 101, and the like are arranged. The camera control unit 105 is configured to receive a switch input signal of the operation panel with the operation panel 108. The wireless transmission / reception unit 109 preferably includes a wireless adapter, and the wireless communication standard is Bluetooth (registered trademark). That is, transmission and reception are performed in accordance with the Bluetooth (registered trademark) standard.

  A first embodiment of a recorded video monitoring method for a television camera according to the present invention will be described with reference to the flowcharts shown in FIGS. 2 and 3 and FIG. In step S200, it is detected whether the adapter connected to the recorded video monitoring apparatus is a wireless interface. If the wireless communication is Bluetooth (registered trademark), since the Bluetooth (registered trademark) has an authentication code, the authentication code is used to detect whether it is a wireless interface.

  For example, this authentication cannot be performed when the one connected to the recorded video monitoring apparatus is a simple USB memory, and thus this flowchart is ended. If the authentication is successful, the process proceeds to step S201. In step S201, the destination of wireless communication is displayed on the camera display means. Here, the destination with which communication was performed previously is displayed. When transmitting / receiving to / from a new destination, it is possible to select a destination after receiving a code by a search by Bluetooth (registered trademark).

  In step S202, it is detected whether or not a destination is selected (selected by an operator or the like). If there is no selection, the process proceeds to step S200, and if there is a selection, the process proceeds to step S203. In step S203, transmission data of the video signal is set. Since the video signal to be transmitted is smaller than the display image at the destination, it can be compressed (reduced) and transmitted. In step S204, a recording / playback tally signal is set. The recording unit 101 is configured to receive a recording, reproduction or stop operation control from the camera control unit 105 and to output a tally signal to the camera control unit 105 upon receiving this operation control.

  The recording / playback tally signal at this time is converted into bitmap information by a bitmap conversion unit provided in the transmission data creation means, and transmitted to the destination in a form of adding it to the video signal. Note that the tally frame shown in FIG. 7 is tally information, and it is preferable to set the transmission so that the recording tally is red, the reproduction tally is blue, and the stop tally is black.

  In step S205, a time code is set. The current time code is obtained from the time code generating means 103 and transmitted to the destination as the source time code. In step S206, the wireless interface is controlled to transmit or receive data to or from the destination. In the case of Bluetooth (registered trademark), since transmission / reception is performed based on the standard, no special control is required for transmission / reception.

  In step S207, it is detected whether or not there is a response from the wireless interface in time. If there is a response, the process proceeds to step S209, and if there is no response, the process proceeds to step S208. In step S208, it is detected whether the time until the response set in step S207 has expired. If the time is up, this flowchart is terminated. If the time has not expired, the process proceeds to step S207.

  In step S209, when there is a response, the imaging data and the time code are acquired from the data (reception data) sent from the destination and displayed on the camera display unit 102. In step S210, the recording or reproduction tally signal of the destination is received as bitmap information and displayed as a display frame of the destination imaging data and time code to be displayed on the camera display means 102 as they are. In step S211, the destination time code is acquired. In step S212, the source time code and the destination time code are compared. As a result of the comparison, it is a mechanism for correcting the time code of the person who has advanced the time code as the reference time code. For example, if the source is 00: 25: 40: 08 and the destination is 00: 24: 37: 04, 00: 25: 40: 08 is ahead, so the source time code is the destination time. Modify the code.

  If the destination is advanced, the source is delayed, so the time code is left as it is and the process proceeds to step S203. If the destination is delayed, the source is advanced, so the process proceeds to step S213 to correct the time code. In step S213, the destination time code is set, and the acquired time code is set (corrected) in the time code generating means 103. Then, it progresses to step S203. The above is the flow of the first embodiment in the recorded video monitoring method according to the present invention.

  FIGS. 7A and 7B are display examples of the camera display unit 102 when the source and destination recorded video monitoring apparatuses transmit and receive each other. The imaging data and time code received from the destination are displayed with a tally frame. When this flowchart is finished, the television camera shifts from the interlocking television camera system to the single television camera.

  4 to 6 are flowcharts of the second embodiment of the recorded video monitoring method according to the present invention when the television camera is used as a master or a slave. The master or slave indicates a relationship in which one of the two TV cameras is operated as a master and one is operated as a slave, and the slave is completely synchronized with the operation on the master side. When the television camera is fixed and imaged, the slave and the master are set so that one person can control two units.

  Step S300 detects whether or not the connected adapter is a wireless interface. If the communication standard for wireless communication is Bluetooth (registered trademark), since Bluetooth (registered trademark) has an authentication code, the authentication code is used to detect whether the wireless interface is used. Note that this authentication cannot be performed when the connected device is a simple USB memory, and thus this flowchart is terminated. If detected, the process proceeds to step S301.

  In step S301, the source is selected as a master or a slave (controlled so that it can be displayed and selected on the camera display means 102). Step S302 displays the destination of wireless communication. If communication has been performed before, the destination is displayed. In addition, when a new transmission / reception is performed with a destination, it is possible to select a destination after receiving a code by using a search by Bluetooth (registered trademark). In step S303, it is detected whether a destination is selected.

  If no destination is selected, the process proceeds to step S300. If a destination is selected, the process proceeds to step S304. In step S304, transmission data based on the video signal is set. Of the transmission data, the imaging data is smaller than the display image at the destination, so that it can be compressed and transmitted. In addition, the recording unit 101 is configured to receive recording, reproduction or stop operation control from the camera control unit 108, and when this operation control is received, the recording unit 101 outputs a tally signal to the camera control unit 105.

  The recording / playback tally signal at this time is converted into bitmap information by a bitmap conversion unit provided in the transmission data creation means, and transmitted to the destination in a form of adding it to the video signal. The tally frame in FIG. 7 is tally information. It is preferable to send the recording as red, playback as blue, and stop as no tally color.

  In step S306, a time code is set. The current time code is obtained from the time code generating means 103 and transmitted to the destination as the source time code. In step S307, control is performed so as to transmit to or receive from the wireless interface. In the case of Bluetooth (registered trademark), since transmission / reception is performed based on the standard, no special control is required for transmission / reception.

  Step S308 detects whether or not there is a response from the wireless interface within the time. If there is a response, the process proceeds to step S310, and if there is no response, the process proceeds to step S309. In step S309, it is detected whether or not the time until the response set in step S308 has expired. If the time is up, this flowchart is terminated. If the time has not expired, the process proceeds to step S308.

  In step S310, when there is a response, the imaging data and the time code are acquired from the data (received data) sent from the destination and displayed on the camera display unit 102. In step S311, the recording / playback tally signal of the destination is received as bitmap information and displayed as a display frame of destination imaging data and time code to be displayed on the camera display means 102 as they are. In step S312, if the source is a master that determines whether it is a master or a slave, the process proceeds to step S313 if it is a slave in step S318.

  In step S313, it is determined from the bitmap information received in step S311 whether or not the tally signal is a recording tally signal. That is, the display color is obtained from the bitmap information and it is determined whether or not it is a recording tally signal. If it is a recording tally signal, the process proceeds to step S314. If it is not a recording tally signal, the process proceeds to step S315. Subsequently, Step S314 starts imaging (recording). Since the master is imaging (recording) operation, the slave side also performs imaging (recording) operation. Thereafter, the process proceeds to step S318.

  In step S315, it is determined whether or not the tally signal received in step S311 is a reproduction tally signal. That is, the display color is obtained from the bitmap information and it is determined whether or not it is a reproduction tally signal. If it is a reproduction tally signal, the process proceeds to step S316, and if it is not a reproduction tally signal, the process proceeds to step S317. In step S316, the reproduction of the imaging data is started. Since the master is the reproduction operation of the imaging data, the slave side also performs the reproduction operation of the imaging data. Thereafter, the process proceeds to step S318.

  In step S317, the imaging (recording) operation and the reproduction operation are stopped. Since the master imaging (recording) operation and the reproduction operation are stopped, the slave side also stops the operation. In step S318, the destination time code is acquired. In step S319, the destination and the time code of the source are compared. The time code is corrected based on the late one. If the destination is advanced, the source is delayed, so the time code is left as it is and the process proceeds to step S304. If the destination is delayed, the source is advanced, so the process proceeds to step S320 to correct the time code. In step S320, the destination time code is set, and the acquired time code is set in the time code generating means 103. Thereafter, the process proceeds to step S304.

  Many variations of the embodiments of the present invention are possible. For example, although connection detection means for detecting the connection of the wireless adapter is provided, it is also possible to directly exchange signals between the camera control means without providing the connection detection means, and to confirm the connection. Further, the wireless standard is not Bluetooth (registered trademark), and general-purpose wireless communication similar to Bluetooth (registered trademark) may be used.

  The recorded video monitoring device for a TV camera and the recorded video monitoring method for a TV camera according to the present invention are suitable when a broadcast material is collected by a plurality of TV cameras, and are extremely effective when a wireless adapter is attached. It will be a thing.

DESCRIPTION OF SYMBOLS 10 Recorded image monitoring apparatus 100 Imaging means 101 Recording means 102 Camera display means 103 Time code generation means 104 Display control means 105 Camera control means 106 Transmission data creation means 107 Connection detection means 108 Operation panel 109 Wireless transmission / reception part

Claims (4)

A recorded video monitoring device of a television camera that has imaging means for outputting imaging data by imaging an imaging target, and enables data transmission and reception with an external recorded video monitoring device,
Time code generating means for generating a time code at the time of imaging by the imaging means;
Recording means for recording imaging data output by the imaging means and the time code generated by the time code generating means;
When recording the imaging data, a video signal is created from the imaging data output from the imaging means and the time code generated by the time code generating means, and when the imaging data is reproduced, it is recorded in the recording means. Display control means for creating a video signal from the imaging data and the time code;
Camera display means for displaying video based on the video signal created by the display control means;
A wireless adapter that transmits and receives data to and from a recorded video monitoring device of an external TV camera;
Connection detecting means for detecting connection in the recorded video monitoring device of the TV camera of the wireless adapter;
Transmission data creating means for creating transmission data by compressing the video signal created by the display control means;
Camera control means for controlling the time code generation means, the transmission data creation means, the wireless adapter, the connection detection means and the display control means;
Have
When the connection detection unit detects the connection of the wireless adapter, the camera display unit displays identification information of the recorded video monitoring device of the external television camera, and the display control unit displays the video the wireless adapter combines the video signal generated based on data received from recording the video monitor of the external television camera signal, is displayed on the camera display means,
From the video monitor of the television camera, it characterized that you transmit the transmission data to the recording image monitoring apparatus of the external television camera.   2. The recorded video monitoring apparatus for a television camera according to claim 1, wherein the transmission data creation means includes bitmap conversion means for converting a recording or reproduction tally signal obtained from the recording means into bitmap information. In a recorded video monitoring method of a television camera that obtains imaging data by imaging an imaging target, and transmits and receives the imaging data and other data incidental thereto with an external recorded video monitoring device by a wireless adapter. There,
A connection detection step of detecting connection of the wireless adapter in the recorded video monitoring device;
In the connection detection step, when the connection of the wireless adapter is detected, a destination selection step of selecting a data destination by the wireless adapter;
A data management step for performing the following steps (1) to (6) when a data destination is selected in the destination selection step;
A method for monitoring recorded video of a television camera, comprising:
(1) A step of generating transmission data by compressing the image data and setting the transmission data and a time code generated by the transmission source to transmittable data. (2) A recording or reproduction tally generated by the transmission source. A step of converting a signal into bitmap information. (3) Transmitting and receiving the transmission data, a time code generated by the transmission source and the bitmap information by the wireless adapter, and receiving reception data from the transmission destination. Step (4) Acquiring destination compressed image data from the received data and displaying it on a display device (5) Acquiring destination bitmap information from the received data and displaying it on the display device A bitmap display step for displaying on a display device as a data display frame (6) The reception The destination time code is acquired from the data and compared with the time code generated by the source. If the time code generated by the source is ahead of the time code of the destination, the source is generated. The time code to be converted into the destination time code The bitmap display step analyzes the destination tally signal from the destination bitmap information only when controlled by the remote operation of the destination, and the destination tally signal is different from the source tally signal. 4. The recorded video monitoring method for a television camera according to claim 3 , further comprising a tally signal control step for controlling the source tally signal to be the same as the destination tally signal. .

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