JP2018033060A - Imaging apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an imaging apparatus in which an on-screen video is prevented from being recorded accidentally during on-screen display.SOLUTION: An imaging apparatus 100 has: a generation unit 104 generating photographing-related information and recording start information or recording stop information to be superimposed on a video signal from an imaging unit 101; a video processing unit 102 for superimposing the photographing-related information and the recording start information or the recording stop information on the video signal; an output unit 105 for outputting the video signal to an external recording apparatus 300; and a control unit 103 for superimposing the recording start information together with the photographing-related information for a specified time by the video processing unit and then stopping superimposition, when a recording start command is inputted in the recording apparatus, and outputting a recording start command to the recording apparatus. Furthermore, when a recording stop command is inputted in the recording apparatus, the control unit outputs the recording stop command to the recording apparatus, and after superimposing the recording stop information on the video signal from the imaging unit for a specified time by the video processing unit, superimposes the photographing-related information by the video processing unit.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an image pickup apparatus for preventing an on-screen video from being erroneously recorded during on-screen in a system in which an external storage device is connected to the image pickup apparatus.

  In general, a television camera used in a television broadcasting station has an SDI (Serial Digital Interface) defined by SMPTE (National Film and Television Engineers Association) and ARIB (General Electric Industries Association) as a video output interface. Many cameras have adopted

  Patent Document 1 discloses that an SDI output television camera is connected to a video recording apparatus, and a control signal for controlling the video recording apparatus is superimposed on an auxiliary data packet of SDI to control the video recording apparatus. Yes.

Japanese Patent No. 4264655

  In Patent Document 1, when a recording start operation switch of the TV camera body is pressed, a control signal for starting recording of the video recording apparatus is superimposed on an auxiliary data packet of SDI and output. The video recording apparatus detects a control signal for starting recording from the auxiliary data packet and starts recording. However, if the TV camera performs an on-screen display that displays the operation function of the TV camera on the captured video, if the recording start switch is accidentally pressed, the on-screen video is recorded on the video recording device. .

  An object of the present invention is to provide an imaging apparatus that solves the above-described problems and prevents an image being displayed on-screen from being erroneously recorded.

In order to achieve the above object, an imaging apparatus according to the present invention includes a generation unit that generates shooting-related information to be superimposed on a video signal from an imaging unit, and recording start or recording stop information;
A video processing unit that superimposes the shooting-related information and the recording start or recording stop information on the video signal;
An output unit for outputting a video signal from the video processing unit to an external recording device;
Command input means for inputting a command signal;
When a recording start command in the recording device is input from the command input unit, the video processing unit superimposes the recording start information together with the shooting related information on the basis of the video processing unit, and then the video processing unit A controller that stops superimposition and outputs a recording start command to the recording device;
Have
Further, the control unit outputs a recording stop command to the recording device based on a recording stop command at the recording device input from the command input unit, and then transmits the recording stop information to the video processing unit. Then, after superimposing on the video signal from the imaging unit for a predetermined time, the imaging related information by the video processing unit is superimposed.

  The image pickup apparatus according to the present invention can provide an image pickup apparatus that prevents an image being displayed on-screen from being erroneously recorded.

Configuration diagram of Example 1 Example of auxiliary data packet configuration of embodiment 1 Example of HDMI / vendor / specific / infoframe configuration of the first embodiment (A) Flow chart at the start of recording according to the first embodiment, (b) Flow chart at the time of stopping recording according to the first embodiment. (A) Recording start display example of Example 1, (b) Recording stop display example of Example 1 (A) Main menu display example of Example 2, (b) Camera setting menu display example of Example 2, (c) Status screen display example of Example 2 (d) Date / time display example of Example 2 Display example of the individual setting screen of the second embodiment (A) Flowchart at the start of recording in Embodiment 2 (b) Flowchart flowchart at the time of stopping recording in Embodiment 2

  The present invention will be described in detail based on the embodiments shown in the drawings.

[Example 1]
FIG. 1 is a configuration diagram of an imaging apparatus 100 according to the first embodiment of the present invention. The imaging apparatus 100 includes an imaging unit 101, a video signal processing unit 102 (video processing unit), a CPU 103, an on-screen generation unit 104, a video signal output unit 105, a communication unit 107 (command input unit), and an operation unit 108 (command input unit). ). In addition, the imaging apparatus 100 is connected to an external controller 200 for remotely operating the imaging apparatus 100 so as to communicate with the communication unit 107 via a predetermined cable. Furthermore, an external recording device 300 for displaying and recording a video signal output from the imaging device 100 is connected to the video signal output unit 105 via a predetermined cable such as a coaxial cable or a high definition multimedia interface (HDMI) cable. . In this embodiment, the video signal output unit is configured by only one system, but may be configured by a plurality of two or more systems.

  The configuration including the imaging device 100 and the external operation device 200 of the present invention or the external recording device 300 in addition thereto may be an imaging system that enjoys the effects of the imaging device 100 of the present invention.

  The video signal processing unit 102 digitally converts an analog signal from the imaging unit 101 and adjusts predetermined image processing such as gain, luminance, and color in accordance with a command signal from the CPU 103 (control unit) to generate a video as a digital video signal. Output to the signal output unit 105. Also, the video signal processing unit 102 is an on-screen generation unit which will be described later with on-screen information (hereinafter also referred to as OSD information) for on-screen display for displaying the operation function (shooting-related information) of the imaging device on the shot video 104 is received. Then, characters, symbols, icons, and the like that display the operation function of the imaging apparatus 100 together with the captured video are combined (superimposed) with the video signal from the imaging unit 101.

  The video signal output unit 105 converts the digital video signal from the video signal processing unit 102 into a predetermined format such as HD-SDI, 3G-SDI, HDMI signal, and outputs the converted signal. The HD-SDI and 3G-SDI signals are SDI (Serial Digital Interface) standards defined by SMPTE (National Film and Television Engineers Association) and ARIB (Registered Trademark). HDMI is a communication interface standard that transmits video and audio as digital signals.

  The CPU 103 is connected to the imaging unit 101, the video signal processing unit 102, the on-screen generation unit 104, the video signal output unit 105, the communication unit 107, and the operation unit 108, and performs setting and control of each unit.

  When the on-screen generation unit 104 presses a predetermined switch (not shown) on the operation unit 108 or the external operation unit 200, the on-screen generation unit 104 displays characters, symbols, icons, and the like that display the operation functions of the imaging device 100 based on the control of the CPU 103. OSD information is generated. Specifically, the CPU 103 transmits (inputs) bitmap data such as characters, symbols, and icons and display position coordinate data on the screen for on-screen display to the video signal processing unit 102 in a predetermined format.

  The communication unit 107 is an interface for transmitting and receiving command signals (commands) for operating the gain, shutter, and the like of the imaging apparatus 100 with the external controller 200 using a predetermined format such as RS-232C or RS-422. In addition, command signals from the external controller 200 are transmitted to and received from the CPU 103 in a predetermined format.

  The operation unit 108 is a key switch for operating the imaging device 100, a touch panel, or the like.

Next, how the external recording device 300 executes recording start will be described. When a predetermined recording start switch (not shown) is pressed on the operation unit 108 or the external operation device 200, the CPU 103 superimposes a recording start command (recording start command) for starting recording on the video signal output unit 105. Command. When the video signal output unit 105 is an SDI signal, the recording start command is Y defined in SMPTE, or an auxiliary data multiplexing possible area of the C _B / _CR data series, which will be described later (in areas other than video data). ) Superimpose at a predetermined position.

  When the video signal output unit 105 is an HDMI signal, the video signal output unit 105 superimposes the video signal output unit 105 on a predetermined position described later of an HDMI vendor specific info frame (hereinafter referred to as VSIF) defined in the CEA-861 standard.

  FIG. 2 shows an auxiliary data packet structure when the video signal output unit 105 is an SDI signal. It consists of ADF (auxiliary data flag), DID (data identification word), SDID (second data identification word), DC (data count word), UDW (user data word), and CS (check sum word). ADF, DID, and SDID have predetermined values, and UDW consists of 11 words.

  In the present embodiment, the recording start command is set to start by setting the bit number b1 of the 11th word of the UDW (hereinafter referred to as UDW10) to 1 as shown in FIG. Also, recording is stopped by setting b1 of UDW10 to 0. In this embodiment, the auxiliary data packet structure of the second format defined by SMPTE is used. However, the auxiliary data packet structure of the first format may be used.

  When the external recording device 300 is a recording device that receives an SDI signal, a predetermined DID and SDID are detected from the auxiliary data packet of the SDI signal output from the video signal output unit 105, and the bit number b1 of the UDW 10 is 1. In this case, recording is started. On the other hand, when b1 of UDW10 is 0, recording is stopped.

FIG. 3 shows a VSIF packet structure when the video signal output unit 105 is an HDMI signal.
It consists of HB0 to HB2 (packet header) and PB0 to PB27 (packet body). In this embodiment, the recording start command is set to 1 by setting the bit number 7 of PB14 Byte to 1 as shown in FIG. Also, recording is stopped by setting bit number 7 of PB14 Byte to 0.

  When the external recording device 300 is a recording device that receives an HDMI signal, recording starts when the bit number 7 of PB14 Byte is 1 from the VSIF packet of the HDMI signal output from the video signal output unit 105. ing. On the other hand, when the bit number 7 of PB14 Byte is 0, recording is stopped.

  Next, a flow for preventing the image capturing apparatus 100 from erroneously recording an on-screen video during the on-screen will be described with reference to FIG.

  When a predetermined recording start switch is pressed from the operation unit 108 or the external operation device 200 (step S1), a predetermined recording start command is transmitted to the CPU 103 of the imaging apparatus 100 (step S2). When the CPU 103 receives a predetermined recording start command (step S3), a text (RECSTART) indicating the start of recording (RECSTART) as shown in FIG. Display for 1 second (step S4). During the on-screen display, a text indicating the start of recording (REC START) is additionally displayed. Thereafter, the CPU 103 transmits a command signal for stopping the on-screen display (step S5). The on-screen generation unit 104 stops transmitting the OSD information that has been transmitted to the video signal processing unit 102 (step S6).

  Next, the CPU 103 transmits a command signal so as to superimpose a recording start command on the video signal output unit 105 (step S7). When the video signal output unit 105 outputs an SDI signal, the bit number b1 of the UDW 10 of the auxiliary data packet is set to 1 and is output in a predetermined format (step S8). Finally, when the external recording device 300 is a recording device that receives the SDI signal, the predetermined DID and SDID of the auxiliary data packet are detected, and since the bit number b1 of the UDW 10 is 1, recording is started (step S9). . When the video signal output unit 105 outputs an HDMI signal, the bit number 7 of PB14 Byte of the VSIF packet is set to 1 and is output in a predetermined format (step S8). If the external recording device 300 is a recording device that receives an HDMI signal, since the bit number 7 of PB14 Byte of the VSIF packet is 1, recording is started (step S9).

  Step S4 is provided so that the user can confirm that recording is started by surely pressing the recording start button, but even if step S4 is omitted and the process proceeds from step S3 to step S5. I do not care. In addition, the display time of the text indicating the start of recording or an icon may be arbitrarily set by the user in the setting menu described later in the second embodiment.

  Next, a flow when the imaging apparatus 100 stops recording will be described with reference to FIG.

  When a predetermined recording stop switch is pressed from the operation unit 108 or the external operation device 200 (step S11), a predetermined recording stop command is transmitted to the CPU 103 of the imaging apparatus 100 (step S12). When the CPU 103 receives a predetermined recording stop command (step S13), the CPU 103 transmits a command signal so as to superimpose the recording stop command on the video signal output unit 105 (step S14). When the video signal output unit 105 outputs an SDI signal, the bit number b1 of the UDW 10 of the auxiliary data packet is set to 0 and is output in a predetermined format (step S15). If the external recording device 300 is a recording device that receives the SDI signal, the predetermined DID and SDID of the auxiliary data packet are detected, and since the bit number b1 of the UDW 10 is 0, the recording is stopped (step S16).

  When the video signal output unit 105 outputs the HDMI signal, the bit number 7 of PB14 Byte of the VSIF packet is set to 0 and is output in a predetermined format (step S15). In the case where the external recording device 300 is a recording device that receives an HDMI signal, since the bit number 7 of PB14 Byte of the VSIF packet is 0, recording is stopped (step S16).

  Next, the on-screen generation unit 104 displays text (REC STOP) indicating that recording is stopped or an icon or the like as shown in FIG. 5B on the video signal processing unit 102 for a predetermined time (1 second in this embodiment). (Step S17). Thereafter, the CPU 103 instructs the on-screen generation unit 104 to perform on-screen display (step S18). The on-screen generation unit 104 transmits default OSD information (step S19) and displays the on-screen (step S20).

  Step S17 is provided so that the user can surely press the recording stop button and recognize that the recording has been stopped. However, step S17 may be omitted and the process may proceed from step S16 to step S18. . Alternatively, at the time of step S18, a text indicating recording stop (REC STOP), an icon, or the like may be included in the predetermined OSD information and transmitted together. Furthermore, the display time of the text indicating recording stop (REC STOP) or the icon may be arbitrarily set by the user in the setting menu described later in the second embodiment.

  As described above, even if the imaging apparatus 100 erroneously receives a recording start command from the operation unit 108 or the external controller 200 during on-screen display, the imaging apparatus 100 records the image after hiding the on-screen display. A start command is superimposed on a predetermined format and output. As a result, it is possible to prevent the video being on-screen displayed from being erroneously recorded. Also, when it is necessary to start recording suddenly during the on-screen, the on-screen display is hidden by pressing the operation unit 108 or a predetermined switch of the external controller 200 in order to hide the on-screen display. It is also possible to save time and effort.

  Further, when the recording stop button is pressed, the recording is stopped and the OSD information is displayed again. Therefore, the on-screen display is displayed again by pressing the operation unit 108 or a predetermined switch of the external operating device 200. It is possible to save time and effort.

[Example 2]
In the second embodiment, when the imaging apparatus 100 receives a recording start command from the operation unit 108 or the external operation device 200 during on-screen display, whether or not on-screen display is possible is set in advance and individually according to the content of the on-screen display. A new setting menu screen is provided. In the setting menu screen, whether or not to enable on-screen display after receiving a recording stop command and stopping recording can be set in advance and individually. Furthermore, the display time of the text (REC START, REC STOP) indicating the start and stop of recording when recording is started and when recording is stopped can be set.

  In this respect, the present embodiment is different from the first embodiment. Since the configuration is the same as that of FIG.

  FIGS. 6A, 6B, 6C, and 6D are display examples when on-screen display is performed on a captured image. (A) is a display example of the main menu of the imaging apparatus 100. (B) is a display example of the camera setting menu of the imaging apparatus 100. (C) is a display example of a status screen displaying the current setting status of the imaging apparatus 100. (D) is a display example displaying the current date and time.

  FIG. 7 shows a display example of the individual setting menu, which is displayed on-screen when a predetermined button is pressed from the operation unit 108 or the external operation device 200 to receive a recording start and recording stop command. As shown in the display examples of FIGS. 6A, 6B, 6C, and 6D, they can be set individually. In addition, the display time of the text (REC START, REC STOP) indicating the start and stop of recording when recording is started and when recording is stopped can be set.

  FIG. 8A shows a flowchart at the start of recording in this embodiment, and FIG. 8B shows a flowchart at the time of recording stop in this embodiment. Steps S21 to S24 and Steps S28 to S30 are the same as Steps S1 to S4 and Steps S7 to S9 in the flowchart of FIG.

In step S25 of FIG. 8A, the CPU 103 issues a display / non-display command to the on-screen generation unit 104 in accordance with preset individual settings for each content to be displayed on-screen. In step S26, the on-screen generation unit 104 transmits the OSD information to be displayed / hidden and individually displays the contents to be displayed on-screen (step S27).
Similarly, steps S41 to S47 in the flowchart of FIG. 4B of the first embodiment are the same as steps S11 to S17 of the flowchart of FIG.

  In step S48 of FIG. 8B, the CPU 103 issues a display / non-display command to the on-screen generation unit 104 in accordance with preset individual settings for each content to be displayed on-screen. In step S49, the on-screen generation unit 104 transmits the OSD information to be displayed / hidden and individually displays the contents to be displayed on-screen (step S50).

  As described above, in the second embodiment, when the imaging apparatus 100 receives a recording start command from the operation unit 108 or the external operation device 200, on-screen display / non-display can be set in advance and individually. It becomes. Thereby, it is possible to prevent the on-screen video from being erroneously started during the on-screen.

  Further, when a recording stop command is received from the operation unit 108 or the external operation device 200, on-screen display / non-display can be set in advance and individually after the recording is stopped. Thereby, it is possible to save the trouble of pressing the predetermined switch of the operation unit 108 or the external operation device 200 to redisplay the on-screen.

DESCRIPTION OF SYMBOLS 100 Imaging device 101 Imaging part 102 Video signal processing part (video processing part)
103 CPU (control unit)
104 On-screen generator (generator)
105 Video signal output unit (output unit)
107 Communication unit (command input means)
108 Operation unit (command input means)

Claims (5)

An imaging unit;
Shooting related information for superimposing on the video signal from the imaging unit, and a generation unit for generating recording start and recording stop information;
A video processing unit that superimposes the shooting-related information and the recording start or recording stop information on the video signal;
An output unit for outputting a video signal from the video processing unit to an external recording device;
Command input means for inputting a command signal;
When a recording start command in the recording device is input from the command input unit, the video processing unit superimposes the recording start information together with the shooting related information on the basis of the video processing unit, and then the video processing unit A controller that stops superimposition and outputs a recording start command to the recording device;
Have
Further, the control unit outputs a recording stop command to the recording device based on a recording stop command at the recording device input from the command input unit, and then transmits the recording stop information to the video processing unit. Then, after superimposing the video signal from the imaging unit for a predetermined time, the imaging related information by the video processing unit is superimposed. The imaging apparatus according to claim 1, further comprising a setting unit configured to set a superposition time for superimposing the recording start and recording stop information generated by the generation unit on the video signal. For each of the shooting-related information generated by the generation unit, there is a setting unit that sets whether or not recording is possible and whether or not the video signal from the imaging unit is superimposed when recording is stopped,
When a command signal for instructing start of recording on the recording device is input from the command input unit, the control unit performs the superposition by the video processing unit based on information set by the setting unit or After stopping, output a recording start command to the recording device,
Further, when a command signal for instructing recording to be stopped at the recording device is input from the command input unit, the control unit outputs the recording stop command to the recording device and then sets the information set by the setting unit. The imaging apparatus according to claim 1, wherein the superimposition by the video processing unit is performed or stopped based on the image processing unit.   The imaging apparatus according to claim 1, wherein the command input unit is an operation unit provided in the imaging apparatus.   The imaging apparatus according to claim 1, wherein the command input unit is an external operation unit that is communicably connected to the imaging apparatus.