JP2018025837A - Electronic equipment and control method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that information equipment comprising two or more display parts needs to have operability such that it is distinct in what timing they are turned off.SOLUTION: Electronic equipment comprises a first display part and mounting detection means for detecting a detachable second display part being mounted separately from the first display part, and also comprises turn-on/off switching means capable of turning on/off the first display part in a power-on state and also enabling the first display part to be turned on/off through a user's operation, a choice being made between the turning-on/off by the turn-on/off switching means and the turning-on/off based upon a state of the mounting detection means.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a method for turning on and off an LCD panel.

  In a professional video camera, a function for turning off a light source from a video camera body such as an LCD panel (liquid crystal panel) or an LED is required for photographing in the dark. The darkness is, for example, shooting at an event such as night animal shooting or wedding. In such a case, if the light source cannot be turned off, the camera body becomes conspicuous at the time of shooting, and desired shooting cannot be performed.

  As a general light-off means, there is a technology that can temporarily turn off the LCD panel with a button. Patent Document 1 discloses that the LCD panel is turned off when connected to an external device.

JP 2009-140471 A

  As described in Patent Document 1, if the LCD panel is only turned off when connected to an external device, the user is not connected to the external device, but cannot be turned off when the user wants to turn off the LCD panel. Therefore, if a function of turning off the LCD panel by pressing a button is incorporated, there is a possibility that it will not be clear when the light is turned off according to the connection with an external device, when the button is turned off, or when it is turned off.

  In view of the above problems, an object of the present invention is to clearly show a user whether an LCD panel is turned off by an external device connection or other instructions.

  In addition to the first display unit and the first display unit, there is provided a mounting detection means for detecting the mounting of the detachable second display unit, and the first display unit is turned on / off while the power is on. The first display unit can be switched on / off by means of a lighting / lighting switching unit that can be switched by a user operation. It is possible to select whether to switch on / off according to the state of the detection means.

  It is possible to clearly indicate to the user whether the LCD panel is turned off by connection of an external device or other instructions.

It is a block diagram concerning the embodiment of the present invention. 1 is an external view according to an embodiment of the present invention. It is the figure which showed the setting screen which concerns on embodiment of this invention. It is a figure which shows the state of each display apparatus concerning embodiment of this invention. It is a figure which shows the state of each display apparatus concerning embodiment of this invention. It is a figure which shows the state of each display apparatus concerning embodiment of this invention. It is a figure which shows the state of each display apparatus concerning embodiment of this invention. It is a figure which shows the state of each display apparatus concerning embodiment of this invention. It is a figure showing the other light-off method which concerns on embodiment of this invention. It is a flowchart at the time of the screen display which concerns on the 1st Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<First Embodiment>
FIG. 1 is a block diagram showing an internal data path of a moving picture recording apparatus according to an embodiment of the present invention. In this embodiment, a digital video camera for business use will be described as an example of an imaging device. Note that the video camera described in this embodiment can be connected to an electronic viewfinder EVF and an operation remote controller with an LCD panel via a cable. Furthermore, HDMI (registered trademark) or SDI is provided as an external IF, and a captured image can be confirmed on a monitor.

  Note that the captured video and the OSD displayed on the EVF and the external IF are the same display. In addition, the LCD panel of the camera body only displays the camera settings and status such as the MENU screen, and does not display the captured video. Further, when the operation remote controller is connected to the camera body, the power source is shared and the LCD panel is displayed. The LCD panel of the operation remote control has the same display as the LCD panel of the camera body.

  In this imaging apparatus, the CPU 107 is an arithmetic unit that reads a program from the program / data storage unit 108 and controls the operation of the entire video camera according to the program. The read program has a function for causing the CPU 107 to execute a plurality of tasks in parallel. Specifically, a “mode control task”, a “camera control task”, a “recorder control task”, and a “display control task” operate under the control of the CPU 107. The CPU 107 that executes the display control task functions as a display control unit. A part of the temporary storage unit 103 functions as a work area of the CPU 107, and provides the following moving image frame buffer and OSD frame buffer.

The camera unit 101 includes a mechanism for inputting an analog video signal to the moving image recording apparatus. Specifically, it includes a lens for imaging light from a subject, an image sensor that photoelectrically converts a subject image formed by the lens, a circuit that drives the image sensor, and the like. The video processing unit 102 converts the analog video signal input from the camera unit 101 into digital moving image data, and performs correction based on predetermined image processing such as noise removal. The operations of the camera unit 101 and the video processing unit 102 are controlled by a “camera control task” executed by the CPU 107.
The encoder / decoder unit 104 encodes the moving image data from the video processing unit 102.

  The moving image data encoded by the encoder / decoder unit 104 is temporarily stored in the temporary storage unit 103 and then stored in the moving image storage unit 105 together with accompanying management data. On the contrary, when the moving image is reproduced, the encoded moving image data (image data) read from the moving image storage unit 105 is decoded by the encoder / decoder unit 104 via the temporary storage unit 103. After that, it is expanded again in the moving image frame buffer in the temporary storage unit 103. Storage control of the encoder / decoder unit 104 and the moving image storage unit 105 is controlled by a “recorder control task” executed by the CPU 107.

  The management data read from the moving image storage unit 105 is used to generate OSD (On Screen Display) data, that is, data for character display or GUI (Graphical User Interface) superimposed on a captured image or a reproduced image. . The generated OSD data is drawn in the OSD frame buffer in the temporary storage unit 103. The contents of the OSD frame buffer are displayed on the external output I / F 113 such as the EVF 112, HDMI (registered trademark), or SDI via the EVF / external output display control unit 111. The operation key 106 is an operation unit for accepting an operation instruction from the user.

  In addition, the CPU 107 superimposes the contents of the moving image frame buffer and the OSD frame buffer in the EVF / external output display control unit 111, and outputs them to the EVF 112 and the external output I / F 113. The contents of the OSD frame buffer displayed on the LCD panel 109 are also stored in the temporary storage unit 103 but in different areas, and are displayed on the LCD panel 109 via the LCD panel display control unit 110.

  Note that since the captured image is not displayed on the LCD panel 109, the CPU 107 does not combine with the moving image frame buffer, and the CPU 107 converts the contents of the OSD frame buffer for panel output by the LCD panel display control unit 110. Is output to the LCD panel 109. In addition, the LCD panel display control unit 110 can specify backlight luminance for the LCD panel 109 in five stages, and can also specify on / off of the backlight.

The remote controller communication unit 114 is an I / F that communicates with the operation remote controller, and the CPU 107 performs power supply and data communication to the operation remote controller. Further, the CPU 107 receives information on keys operated by the operation remote controller through the remote controller communication unit 114.
This is an explanation of an operation remote controller connected to the camera body, and the remote control CPU 127 performs display control of the operation remote controller through communication by the camera communication unit 115. In the operation remote controller, the remote control CPU 127 is an arithmetic unit that reads a program from the remote control program / data storage unit 128 and controls the operation according to the program.

  The read program has a function for causing the remote control CPU 127 to execute a plurality of tasks in parallel. Specifically, a “mode control task” and a “display control task” operate under the control of the remote control CPU 127. A part of the remote controller temporary storage unit 123 functions as a work area of the CPU 127 and provides an OSD frame buffer. Referring to the communication data with camera communication unit 115, remote controller CPU 107 creates a frame buffer for OSD and stores it in remote controller temporary storage unit 123.

  The OSD frame buffer stored in the remote control temporary storage unit 123 is converted into a signal by the remote control display control unit 130 and output to the remote control LCD panel 129. In addition, in the remote control display control unit 130, the backlight luminance can be specified for the LCD panel 129 in five stages.

  Next, FIG. 2 shows an example of an external view of a digital video camera as an imaging apparatus corresponding to an embodiment of the invention from two viewpoints, and an example of an external view of an operation remote controller. This video camera includes a lens communication unit 203 having a camera unit 101 in FIG. 2A, a main body unit 201, and operation keys 106.

  Furthermore, an EVF connection unit 202 is provided, and the EVF connection unit 202 can be connected to the EVF 220. A remote control communication unit 114 is also provided.

  Subsequently, as shown in FIG. 2B, the EVF main body 220 is fixed by the plurality of operation keys 106 and the main body holding portion 210. The EVF main body 220 includes an EVF operation key 221 and an EVF operation dial 222 that are part of the operation key 106. The operation dial 222 can be rotated and pushed into the EVF main body. Further, the EVF main body 220 is attached with an EVF 111 indicating an EVF liquid crystal panel. The main body holding part 210 and the EVF main body 220 are removable.

  Further, a main body operation dial 213 and a panel operation key 212, an LCD panel 109, an external output I / F 113, a battery mounting section 214, and a power supply I / F 215 are attached to the main body section 201. Yes. The main body operation dial 213 can be rotated and pushed into the main body. Furthermore, the main body unit 201 has an assignable button 211 that is a part of the operation key 106, and the user can change the operation assigned to this button using a menu.

  Subsequently, as shown in FIG. 2C, a plurality of remote control operation keys 126, a remote control panel operation key 231, and a remote control operation dial 232 are provided. The remote control dial 232 can be rotated and pushed into the remote control body. As described above, the operation remote controller supplies power and performs data communication with the camera body by the camera communication unit 115 connected by wire.

  FIG. 3 shows an example of a screen displayed on LCD 109 and remote control LCD panel 129 in the present embodiment. FIG. 3 shows a screen displayed when the MENU key, which is one of the operation key 106 of the main body and the operation key 126 of the operation remote controller, is selected and the method for turning off the LCD panel is selected from the displayed MENU list.

  On the screen, there are an assign button and remote control connection as options for turning off the LCD panel. Here, an outline of the operation of each option will be described, and the processing flow will be described with reference to FIG. When the user selects the assign button, the camera body accepts an operation for turning off the LCD panel 109 only with the assign button 211. In order to turn off the LCD panel 109 with the assign button 211, it is necessary to assign a function for turning off the panel in advance to any key of the assign button 211 in the menu. Subsequently, when the user selects when the remote control is connected, the LCD panel 109 is turned off when the remote control is connected.

  However, if communication between the camera body and the remote control is not completed, it will not be turned off even if the connection time is selected. The case where the communication is not completed is, for example, when a remote controller whose operation is not guaranteed is attached or when the firmware version is out of the operation guarantee. When the remote control connection is selected, the LCD panel 109 is not turned off even if the assign button 211 to which the turn-off operation is assigned is pressed.

  As described above, by preparing whether the LCD panel 109 is turned off with a button on the menu or the LCD panel 109 is turned off at the time of connection, it becomes clear for the user when the light is turned off.

  4a to 4e are diagrams showing states of the display devices (LCD panel 109, remote control LCD panel 129, EVF 112) in the setting states of the menu in FIG. 3 in the present embodiment. 4a and 4b show the operation state when the assign button is selected in the LCD panel extinguishing method menu in FIG.

  FIG. 4a shows that both the LCD panel 109 and the EVF 112 are displayed. The LCD panel 109 displays an example of a screen on which the camera setting state can be confirmed. The EVF 112 displays a captured video and a captured image. An example of a screen that displays the setting state superimposed on the video is displayed.

  In the present embodiment, it is assumed that the same video as the EVF 112 is output to the external output I / F 113, but the video of the EVF 112 and the external output I / F 113 do not have to be the same. For example, only the captured video may be displayed on the external output I / F 113, or a setting state different from the EVF 112 may be displayed.

  When the assign button 211 to which the panel turn-off function is assigned is pressed in the state shown in FIG. 4a, the state shown in FIG. 4b is obtained. In FIG. 4b, a black filled rectangle indicates that the panel backlight is turned off. As shown in FIG. 4b, even if the LCD panel 109 is turned off, the EVF 112 is not turned off. Further, the output state with respect to the external output I / F 113 does not change.

  FIG. 4C, FIG. 4D, and FIG. 3 show operation states when the remote control connection is selected in the LCD panel extinguishing method menu. In FIG. 4c, since the operation remote controller is not attached, the LCD panel 109 is in a lighting state. Further, since the remote control LCD panel 129 is equipped with the camera body and the remote control, it indicates that the power is not supplied and is not lit.

  In FIG. 4d, since it is connected to the panel, the LCD panel 109 is turned off. In this case, the operation remote controller is supplied with power, and the remote control LCD panel 129 is turned on. 4c and 4d, the operation of the EVF 112 is not affected and is always lit. Further, the state of the external output I / F 113 is not changed by the change in FIGS. 4c and 4d. Further, in FIGS. 4c and 4d, the state of the LCD panel 109 does not change even when the assign button 211 to which the turn-off function is assigned is pressed.

  FIG. 4e shows an example where the assign button is selected in the LCD panel extinguishing method menu in FIG. 3, but a remote control is attached. In this case, since the LCD panel 109 is turned off by the assign button, it is not turned off only by attaching the remote control. When the assign button 211 to which the panel turn-off function is assigned is pressed in the state of FIG. 4e, the LCD panel 109 is turned off. In this case, the remote control LCD panel 129 and the EVF 112 are not turned off. The output state for the external output I / F 113 does not change.

  In FIG. 5, the extinguishing means will be described in addition to the above. In this embodiment, when the operation key 106 and the operation dial 213 are simultaneously operated as the body extinguishing means, the brightness of the liquid crystal on the panel (the brightness of the backlight) and the extinguishing operation can be performed. As shown by the operation finger 501 of the user in FIG. 5, it can be seen that a part of the operation keys 106 and the operation dial 213 are operated simultaneously. In this case, the brightness of the LCD panel gradually changes, and the LCD panel is turned off when the operation dial 213 is continuously rotated in the direction of the arrow in FIG.

  Conversely, if the panel is continuously turned in the direction opposite to the arrow direction, the panel becomes brighter. In the present embodiment, the direction and brightness of the dial are not particularly limited, and may be the reverse of the above. In FIG. 5, 502, 503, 504, 505, and 506 indicate that the brightness of the panel is gradually darkened, and 507 indicates that the panel is turned off. Note that changes to 502, 503, 504, 505, and 506 in FIG. 5 work in any case, but 507 in FIG. 5 is that the assign button is selected by the LCD panel turn-off method in FIG. This is only the case.

  If the LCD panel 109 is turned off by the operation shown in FIG. 5 regardless of whether the remote control connection method is selected by the LCD panel turn-off method shown in FIG. 3, the LCD panel 109 is turned off and the operation remote control is connected and disconnected. This is because it is not clear to the user whether the light is on or off.

  FIG. 6 is a flowchart showing the process of turning off the LCD panel performed by the CPU 107 when the screen is updated after shifting to the camera mode in the present embodiment. This processing is realized by the CPU 107 reading out the program from the program / data storage unit 108 and executing it.

  First, in S601, the CPU 107 turns on the backlight of the LCD panel 109 as an initial control. The brightness of the backlight at this time is set by reading the brightness when it was last turned on from the program / data storage unit 108.

  In step S <b> 602, the CPU 107 acquires the current backlight state and stores it in the temporary storage unit 103.

  Next, in S603, the CPU 107 determines whether or not a power-off request has been made. If a power-off request has been made, the CPU 107 performs the process in S612 and performs a power-off process. In S612, the CPU 107 does nothing particularly when the panel is turned off. When the panel is in a lighting state, the backlight state acquired in S602 is stored in the program / data storage unit. In S603, when there is no power-off request, the CPU 107 performs the process of S604.

  In step S <b> 604, the CPU 107 determines whether the MENU setting for the method for turning off the LCD panel is an assign button. In this embodiment, it is assumed that all menu settings are stored in the program / data storage unit 108, and whether or not the MENU setting of the LCD panel turn-off method is the assign button is also determined by the program / data storage. Data is read from the unit 108 and controlled. In S604, the CPU 107 performs the process of S605 if the setting of the MENU for turning off the LCD panel is the assign button, and performs the process of S607 if it is not the assign button.

  In step S605, the CPU 107 determines whether the assign button 211 to which the panel extinguishing function is assigned has been pressed. If not, the CPU 107 repeats the processing from step S602. If the button is pressed, the CPU 107 repeats step S606. Perform the process.

  In step S606, the CPU 107 inverts the backlight request from the backlight state acquired in step S602. That is, when the backlight state is off, the backlight request is turned on, and when the backlight state is on, the backlight request is turned off. Note that the backlight request is a value stored in the temporary storage unit 103. In step S607, the CPU 107 determines whether or not the operation remote controller is connected. If the remote controller is connected, the process of step S608 is performed. If the remote controller is not connected, the process of step S609 is performed.

  Next, in S608, the CPU 107 turns on the backlight request. Next, in S609, the CPU 107 turns off the backlight request. Next, in step S610, the CPU 107 determines whether the backlight state acquired in step S602 is different from the backlight request stored in the temporary storage unit 103. If they are the same, the process returns to step S602 and repeats the processing. In the case, the process proceeds to S611.

  Next, in S611, the CPU 107 changes the backlight state according to the backlight request. When the backlight request is off, the current brightness is stored in the program / data storage unit 108.

  By controlling according to the turn-off method menu and the connection state by the sequence as described above, the operation as shown in FIG. 4 can be performed. Although not described in the above sequence diagram, when an operation as shown in FIG. 5 is performed, it is determined in S605 whether the operation is from 506 to 507 in FIG.

  As described above, it is possible to provide a GUI that provides a clear operation for the user by preparing a menu that allows the user to select the panel turn-off method and changing the operation specifications depending on the selection state of the menu. By letting the user select the light-off method, it becomes clear when the user turns off the light.

  Note that all the operation keys are accepted even when the panel is turned off. As described above, when the remote control connection method is selected by the LCD panel turn-off method, the key is invalid even if the assign button 211 to which the turn-off function is assigned is pressed. The initial setting value for the method for turning off the LCD panel is an assign button.

  Note that the various types of control described as being performed by the CPU 107 may be performed by a single piece of hardware, or the entire apparatus may be controlled by a plurality of pieces of hardware sharing the processing.

  Although the present invention has been described in detail based on the preferred embodiments thereof, the present invention is not limited to these specific embodiments, and various forms without departing from the gist of the present invention are also included in the present invention. included. Furthermore, each embodiment mentioned above shows only one embodiment of this invention, and it is also possible to combine each embodiment suitably.

  In the above-described embodiments, the case where the present invention is applied to a digital camera has been described as an example. However, the present invention is not limited to this example, and an electronic device that can set the LCD panel to be turned off. If so, it is applicable. That is, the present invention can be applied to a mobile phone terminal, a portable image viewer, a digital photo frame, a music player, a game machine, an electronic book reader, and the like.

(Other embodiments)
The present invention is also realized by executing the following processing. That is, software (program) that realizes the functions of the above-described embodiments is supplied to a system or apparatus via a network or various recording media, and a computer (or CPU, MPU, or the like) of the system or apparatus reads the program code. It is a process to be executed. In this case, the program and the recording medium storing the program constitute the present invention.

101 Camera Unit 102 Video Processing Unit 103 Storage Unit 104 Encoder / Decoder Unit 105 Movie Storage Unit 106 Operation Key 107 CPU
108 Program data storage

Claims (9)

In addition to the first display unit and the first display unit, a mounting detection unit that detects the mounting of the detachable second display unit is provided.
It is possible to switch on / off of the first display section while the power is on, and switching on / off of the first display section can be switched by a user operation. Prepared,
An electronic device characterized in that it can be selected whether to switch on / off by the on / off switching means or whether to switch on / off depending on the state of the mounting detection means. When switching on / off according to the state of the wearing detection means is selected, the operation by the on / off switching means is invalid,
When the mounting detection means determines that the second display unit is mounted, the first display unit is turned off.
The electronic device according to claim 1, wherein when the attachment detection unit determines that the second display unit is not attached, the first display unit is turned on. When turning on and off depending on the state of the wearing detection means, turning on and off by the state of the wearing detection means is invalid,
The electronic apparatus according to claim 1, wherein only an operation by the lighting on / off switching unit is accepted. . The electronic device according to claim 3, wherein the operation by the lighting / lighting switching means is an exterior key to which a function can be freely assigned, and is an operation when a lighting / lighting switching function is assigned. . The operation by the lighting / light-off switching means is an operation of two exterior keys, one key is only pressed, and the other key operation is a rotary dial operation. Electronic equipment. . An image element;
A third display,
The photographed image acquired from the photographing element can be displayed on the third display unit, and the third display unit is not turned off regardless of the lighting on / off switching means or the mounting detection means. The electronic device of any one of thru | or 5. A method for controlling an electronic device having a first display unit,
A mounting detection step for detecting mounting of a detachable second display unit separately from the first display unit;
It is possible to switch on / off of the first display section with the power on, and switching on / off of the first display section can be switched by a user operation; ,
A method for controlling an electronic device, wherein whether to switch on / off in the on / off switching step or whether to switch on / off depending on the state of the mounting inspection step can be selected.   The program for functioning a computer as each means of the electronic device as described in any one of Claims 1 thru | or 6. A computer-readable storage medium storing a program for causing a computer to function as each unit of the electronic device according to any one of claims 1 to 6.