Display control device, control method and program

Abstract

To provide a technique that can prevent flickering of a screen when playing back, while continuously changing a plurality of contents different in display characteristics.SOLUTION: A display control device has: selection means that selects a content to be played back from a plurality of contents; output means that outputs, to display means, the content to be played back selected by the selection means; and control means that controls setting information related to display characteristics that are set to the output means and the display means. When the content to be played back is continuously changed by the selection means, the control means performs control not to change the setting information based on the content to be played back, and when the content to be played back is not continuously changed by the selection means, performs control to change the setting information based on the content to be played back.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a content display control technique. [Background technology]

[0002] Imaging devices such as digital cameras are capable of generating HDR (High Dynamic Range) content, which has a wider dynamic range than conventional SDR (Standard Dynamic Range) content. In order to faithfully reproduce and display the HDR content generated by a digital camera, a display device capable of displaying HDR content is required.

[0003] When an HDR-compatible display device is connected to a digital camera and HDR content generated by the digital camera is played on the display device, the color and brightness of the HDR content can be faithfully reproduced by adjusting the configuration information (connection settings) regarding display characteristics such as the color gamut and gamma characteristics of the content set on the digital camera and display device to match the display characteristics of the content to be played.

[0004] Patent Document 1 describes a technology that calculates the saturation of content and performs color gamut conversion so that it matches or approaches the color tone of the display device. Patent Document 2 describes a technology that corrects original image data based on a virtual gamma curve that follows the characteristics of the liquid crystal panel. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2014-229999 A [Patent Document 2] JP 2009-064031 A Summary of the Invention [Problem to be solved by the invention]

[0006] In the above-mentioned conventional technology, the color gamut and gamma characteristics of the content are converted according to the dynamic range that can be displayed by the display device, so that the color and brightness of the original content may not be faithfully expressed. In addition, if the display device is capable of faithfully displaying the color gamut and gamma characteristics of the content, but the connection settings of the display device do not match the color gamut and gamma characteristics of the content to be played, it is desirable to change the connection settings of the display device so that they match the color gamut and gamma characteristics of the content. However, in order to change the connection settings, it is necessary to reconnect the digital camera and the display device, which may take several seconds. For example, when playing back content such as still images and videos generated by a digital camera on a display device, if the content to be played is changed continuously from multiple contents with different color gamuts and gamma characteristics, the frequency of reconnections increases, causing screen flickering. While the screen flickers, the user cannot view the content to be played, which reduces convenience.

[0007] The present invention has been made in view of the above-mentioned problems, and has as its object to realize a technique capable of suppressing screen flickering when playing back a plurality of contents with different display characteristics while continuously changing them. [Means for solving the problem]

[0008] In order to solve the above problems and achieve the object, a display control device of the present invention has a selection means for selecting a content to be played from a plurality of contents, an output means for outputting the content to be played selected by the selection means to a display means, and a control means for controlling setting information relating to display characteristics to be set in the output means and the display means, wherein when the content to be played is continuously changed by the selection means, the control means does not change the setting information based on the content to be played; when the setting information set in the output means and the display means does not correspond to the display characteristics of the content to be played, the content to be played is converted in accordance with the setting information and output from the output means to the display means, and when the setting information set in the output means and the display means corresponds to the display characteristics of the content to be played, the content to be played is output from the output means to the display means without being converted in accordance with the setting information; When the content to be reproduced is not changed continuously by the selection means, the setting information is changed based on the content to be reproduced. and outputting the content to be reproduced from the output means to the display means without converting the content in accordance with the setting information. Control it as follows. Effect of the Invention

[0009] According to the present invention, it is possible to suppress flickering on the screen when a plurality of contents having different display characteristics are played back while being continuously changed. [Brief description of the drawings]

[0010] [Figure 1] 1 is an external view of a display control device according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a block diagram showing the internal configuration of the display control device according to the embodiment. [Diagram 3] 6A to 6C are diagrams for explaining the transition of connection settings when content is changed continuously in the first embodiment. [Figure 4] 6A and 6B are diagrams for explaining a method for setting a waiting time from when continuous changes of content are stopped until a connection setting is changed in the first embodiment. [Diagram 5] 4 is a flowchart showing a display control process according to the first embodiment. [Figure 6] 13A to 13C are diagrams for explaining the transition of connection settings when content is changed continuously in the second embodiment. [Figure 7] 10 is a flowchart showing a display control process according to the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, the embodiments will be described in detail with reference to the attached drawings. Note that the following embodiments do not limit the invention according to the claims. Although the embodiments describe a number of features, not all of these features are essential to the invention, and the features may be combined in any manner. Furthermore, in the attached drawings, the same reference numbers are used for the same or similar configurations, and duplicated descriptions are omitted.

[0012] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment in which a display control device of the present invention is applied to an imaging device such as a digital single-lens reflex camera capable of taking still images and recording moving images will be described in detail with reference to the accompanying drawings.

[0013] In this embodiment, a case will be described in which a digital camera 100 and a display device 300 are connected, and content such as still images and videos generated by the digital camera 100 is played back on the display device 300.

[0014] [Embodiment 1] In the first embodiment, an example is described in which the setting information (connection settings) regarding the display characteristics of the content set in the digital camera 100 and the display device 300 is not changed when the content is being changed continuously, and when the continuous changing of the content is stopped, the connection settings are changed to match the display characteristics of the content to be played.

[0015] <Device Configuration> First, the configuration and functions of a digital camera 100 according to this embodiment will be described with reference to FIGS.

[0016] FIG. 1(a) is a front perspective view of a digital camera 100 with a lens unit 200 removed, and FIG. 1(b) is a rear perspective view of the digital camera 100. FIG.

[0017] In Fig. 1, the rear display unit 101 is a display unit outside the viewfinder that displays images and various information, and is a display device such as an LCD provided on the rear surface of the camera body. The rear display unit 101 also has a function of playing back still images after capturing still images, displaying moving images during recording, and displaying a live view. The rear display unit 101 is provided with a touch panel 270a. The touch panel 270a is a touch operation member that can detect contact (touch operation) with the display surface of the rear display unit 101 (the touch operation surface of the touch panel 270a).

[0018] The outside viewfinder display unit 243 is a display unit provided on the top surface of the camera body, and displays various settings of the camera, including shutter speed and aperture. The shutter button 102 is an operation unit for issuing shooting instructions. The mode change switch 103 is a rotary dial-type operation unit for switching between various modes. The terminal cover 104 is a cover member that protects a connector (not shown) for connecting an external device to the digital camera 100 via a cable such as USB. The main electronic dial 105 is a rotary operation member included in the operation unit 270, which will be described later in FIG. 2, and settings such as shutter speed and aperture can be changed by rotating the main electronic dial 105.

[0019] The power switch 106 is an operating member that switches the power of the digital camera 100 on and off. The sub electronic dial 107 is also a rotary operating member included in the operating unit 270, which will be described later in FIG. 2, and is used to move the selection frame, advance images, etc. The four-way key 108 is also a movement instruction member included in the operating unit 270, which will be described later in FIG. 2, and is a four-way operating button that has push buttons that can be pressed in four directions: up, down, left, and right. The operation that corresponds to the part of the four-way key 108 that is pressed can be performed in the direction that it is pressed. The SET button 109 is also a push button included in the operating unit 270, which will be described later in FIG. 2, and is mainly used to confirm a selected item, etc.

[0020] The record button 110 is also included in the operation unit 270, which will be described later in FIG. 2, and is used to instruct the camera to start or stop recording a video. The AE lock button 112 is also included in the operation unit 270, which will be described later in FIG. 2, and by pressing this button in the shooting standby state, the exposure state can be fixed. The enlarge / reduce button 111 is also included in the operation unit 270, which will be described later in FIG. 2, and is an operation button for turning the enlargement mode on and off in the live view display in the shooting mode. By turning on the enlargement mode and then operating the main electronic dial 105, the live view image can be enlarged or reduced. In the playback mode, the button functions as a magnification button for enlarging the playback image and increasing the magnification ratio.

[0021] The playback button 113 is also included in the operation unit 270, which will be described later in FIG. 2, and is an operation button for switching between the shooting mode and the playback mode. By pressing the playback button 113 during the shooting mode, the mode changes to the playback mode, and the latest image among the images recorded on the recording medium 250 can be displayed on the rear display unit 101. The menu button 114 is also included in the operation unit 270, which will be described later in FIG. 2, and by pressing the menu button 114, a menu screen on which various settings can be made is displayed on the rear display unit 101. The user can intuitively make various settings using the menu screen displayed on the rear display unit 101, the four-way key 108, the SET button 109, or the touch bar 115.

[0022] The touch bar 115 (multifunction bar) is also included in the operation unit 270 described later in FIG. 2 and is a line-shaped touch operation member (line touch sensor) capable of receiving a touch operation. The touch bar 115 is disposed at a position where it can be touched (touched) by the thumb of the right hand when the grip unit 116 is held in the right hand (held with the little finger, ring finger, and middle finger of the right hand) so that the shutter button 102 can be pressed with the index finger of the right hand. That is, the touch bar 115 is disposed at a position where it can be operated when the eyepiece unit 216 is placed close to the eyepiece unit 216, the viewfinder is looked into, and the user is in a position where the user can press the shutter button 102 at any time (shooting posture). The touch bar 115 is a reception unit that can receive a tap operation (operation of touching and releasing without moving within a predetermined period) on the touch bar 115, a slide operation to the left and right (operation of touching and then moving the touch position while keeping the touch) and the like. The touch bar 115 is an operation member different from the touch panel 270a, and does not have a display function.

[0023] Grip section 116 has a shape that allows the user to easily hold digital camera 100 with the right hand. In a state in which digital camera 100 is held by gripping grip section 116 with the little finger, ring finger, and middle finger of the right hand, shutter button 102 and main electronic dial 105 are disposed in positions that can be operated with the index finger of the right hand. In the same state, sub electronic dial 107 and touch bar 115 are disposed in positions that can be operated with the thumb of the right hand. Lid 117 is a member that opens and closes a slot for attaching and detaching recording medium 250 to and from digital camera 100.

[0024] The communication terminal 210 is an electrical contact for digital camera 100 to communicate with lens unit 200. The eyepiece 216 is a peer-type eyepiece finder. A user can view an image displayed on an electronic viewfinder (EVF), which is an in-finder display unit 229, through the eyepiece 216, and can check the focus and composition of a subject image captured through lens unit 200, which will be described later in FIG. 2.

[0025] Eyepiece detection unit 217 is disposed near eyepiece unit 216 and is capable of detecting the approach of an object to eyepiece unit 216. Eyepiece detection unit 217 may be, for example, an infrared proximity sensor.

[0026] Thumb rest section 119 (thumb standby position) is a grip member provided at a position on the rear side of digital camera 100 where it is easy to place the thumb of the right hand when gripping grip section 116 with no operation of any operation members being operated. Thumb rest section 119 is made of a rubber member or the like to enhance holding power (grip feeling).

[0027] Next, the internal configuration of the digital camera 100 and the lens unit 200 of this embodiment will be described with reference to Fig. 2. In Fig. 2, components common to Fig. 1 are denoted by the same reference numerals.

[0028] 2, the lens unit 200 is equipped with a photographing lens 207 and is detachable from the digital camera 100. The photographing lens 207 is usually composed of multiple lenses, but for simplicity, only one lens is shown here. The communication terminal 206 is an electrical contact for the lens unit 200 to communicate with the digital camera 100. The communication terminal 210 is an electrical contact for the digital camera 100 to communicate with the lens unit 200. The lens unit 200 communicates with the system control unit 201 via the communication terminal 206, and the built-in lens control unit 204 controls the aperture drive circuit 202 to drive the aperture 205, and controls the AF drive circuit 203 to displace the position of the photographing lens 207 to adjust the focus.

[0029] The focal plane shutter 221 can freely control the exposure time of the imaging unit 222 in response to an instruction from the system control unit 201. The imaging unit 222 is an image sensor composed of imaging elements such as CCD or CMOS that convert a subject image into an electrical signal. The A / D converter 223 converts an analog signal output from the imaging unit 222 into a digital signal.

[0030] The image processing unit 224 performs predetermined pixel interpolation, resizing such as reduction, and color conversion processing on the data from the A / D converter 223 or the data from the memory control unit 215. The image processing unit 224 also performs predetermined arithmetic processing using the captured image data, and the system control unit 201 performs exposure control and distance measurement control based on the arithmetic results. This allows TTL (through-the-lens) type AF (autofocus) processing, AE (autoexposure) processing, and EF (flash pre-flash) processing to be performed. The image processing unit 224 also performs predetermined arithmetic processing using the captured image data, and TTL type AWB (auto white balance) processing based on the arithmetic results.

[0031] The memory control unit 215 controls data transmission between the A / D converter 223, the image processing unit 224, and the memory 232. Digital data output from the A / D converter 223 is written to the memory 232 via the image processing unit 224 and the memory control unit 215, or directly via the memory control unit 215. The memory 232 stores image data obtained from the imaging unit 222 and the A / D converter 223, and image display data to be displayed on the rear display unit 101 or the in-finder display unit 229. The memory 232 has a storage capacity sufficient to store a predetermined number of still images and a predetermined period of video and audio. The memory 232 also serves as a memory for image display (video memory).

[0032] The D / A converter 219 converts image display data stored in the memory 232 into an analog signal and supplies it to the rear display unit 101 or the in-finder display unit 229. The display image data written to the memory 232 is displayed on the rear display unit 101 or the in-finder display unit 229 via the D / A converter 219. The rear display unit 101 or the in-finder display unit 229 performs display on a display device according to the analog signal from the D / A converter 219. In this way, by converting the digital signal stored in the memory 232 into an analog signal and sequentially transferring and displaying it on the rear display unit 101 or the in-finder display unit 229, it functions as an EVF that performs live view (LV) display (through image display).

[0033] Various pieces of camera information such as the shutter speed and aperture at the time of shooting are displayed on the outside viewfinder display section 243 via an outside viewfinder display section drive circuit 244 .

[0034] Non-volatile memory 256 is an electrically erasable and recordable memory, and may be, for example, a flash ROM. Constants, programs, and the like for the operation of system control unit 201 are stored in non-volatile memory 256. The programs referred to here are programs for executing the flowcharts described below.

[0035] The system control unit 201 is an arithmetic processing unit consisting of at least one processor and / or at least one circuit, and controls the entire digital camera 100. The system control unit 201 executes programs stored in a non-volatile memory 256 to realize each process of a flowchart described later. For example, a RAM is used for the system memory 252, which is also used as a work memory for developing constants and variables for the operation of the system control unit 201, programs read from the non-volatile memory 256, and the like. The system control unit 201 also performs display control by controlling the memory 232, the D / A converter 219, the rear display unit 101, the in-finder display unit 229, and the like. The system timer 253 is a timekeeping unit that measures the time used for various controls and the time of a built-in clock.

[0036] The mode changeover switch 103, the first shutter switch 211, the second shutter switch 212, and the operation unit 270 are operation means for inputting various instructions to the system control unit 201. The mode changeover switch 103 switches the operation mode of the system control unit 201 to one of a still image shooting mode, a video recording mode, and a playback mode. The still image shooting modes include, for example, an auto shooting mode, an auto scene determination mode, a manual mode, an aperture priority mode (Av mode), a shutter speed priority mode (Tv mode), and a program AE mode (P mode). The still image shooting modes also include, for example, various scene modes and custom modes that are shooting settings for different shooting scenes.

[0037] The user can directly switch to one of these shooting modes by operating the mode changeover switch 103. Alternatively, the user may first switch to a list screen of operation modes using the mode changeover switch 103, then select one of the shooting modes displayed in the list, and then use other operating members to switch between the modes. Similarly, the movie recording mode and the playback mode may each include multiple modes.

[0038] The first shutter switch 211 is turned on and generates a first shutter switch signal SW1 when the shutter button 102 provided on the digital camera 100 is pressed halfway (instruction to prepare for shooting) during operation. The first shutter switch signal SW1 starts shooting preparation operations such as AF (autofocus) processing, AE (auto exposure) processing, AWB (auto white balance) processing, and EF (pre-flash) processing.

[0039] The second shutter switch 212 is turned on when the operation of the shutter button 102 is completed, that is, when the shutter button 102 is fully pressed (shooting instruction), and generates a second shutter switch signal SW2. In response to the second shutter switch signal SW2, the system control unit 201 starts a series of shooting processing operations from reading out a signal from the imaging unit 222 to writing the captured image to the recording medium 250 as an image file.

[0040] The operation unit 270 is made up of operation members such as various switches and buttons that accept various operations from the user and notify the system control unit 201, and includes at least the following operation members: a shutter button 102, a mode change switch 103, a main electronic dial 105, a power switch 106, a sub electronic dial 107, a cross key 108, a SET button 109, a record button 110, a zoom in / out button 111, an AE lock button 112, a playback button 113, a menu button 114, and a touch bar 115.

[0041] The power supply control unit 280 is composed of a battery detection circuit, a DC-DC converter, a switch circuit for switching between blocks to be energized, and detects whether a battery is attached, the type of battery, and the remaining battery power. The power supply control unit 280 also controls the DC-DC converter based on the detection results and instructions from the system control unit 201, and supplies the necessary voltage for the necessary period to each unit including the recording medium 250.

[0042] The power supply unit 230 is composed of a primary battery such as an alkaline battery or a lithium battery, a secondary battery such as a NiCd battery, a NiMH battery, or a Li-ion battery, an AC adapter, etc. The recording medium I / F 218 is an interface with a recording medium 250 such as a memory card or a hard disk. The recording medium 250 is a recording medium such as a memory card for recording captured images, and is composed of a semiconductor memory, a magnetic disk, etc.

[0043] The communication unit 254 is communicably connected to an external device via a wireless antenna or a wired cable, and transmits and receives images and audio. The communication unit 254 can also be connected to a wireless LAN (Local Area Network) or the Internet. The communication unit 254 can transmit image data (including live view images) captured by the imaging unit 222 and image files recorded in the recording medium 250 to an external device, and can also receive image data and various other information from an external device. In this embodiment, the communication unit 254 has a connection unit that complies with HDMI (registered trademark). The display device 300 connected to the communication unit 254 via an HDMI cable can display live view images captured by the imaging unit 222 and images recorded in the recording medium 250. The communication unit 254 is not limited to wireless LAN, and may use a wireless communication module such as infrared communication, Bluetooth (registered trademark), Bluetooth (registered trademark) Low Energy, or Wireless USB.

[0044] The attitude detection unit 255 detects the attitude of the digital camera 100 with respect to the direction of gravity. Based on the attitude detected by the attitude detection unit 255, it is possible to determine whether the image captured by the imaging unit 222 is an image captured with the digital camera 100 held horizontally or vertically. The system control unit 201 can add orientation information corresponding to the attitude detected by the attitude detection unit 255 to the image file of the image captured by the imaging unit 222, or rotate and record the image. An acceleration sensor, a gyro sensor, or the like can be used as the attitude detection unit 255. By using an acceleration sensor or a gyro sensor, the attitude detection unit 255 can also detect the movement of the digital camera 100 (panning, tilting, lifting, standing still, etc.).

[0045] The operation unit 270 includes a touch panel 270a capable of detecting a touch operation on the rear display unit 101. The touch panel 270a and the rear display unit 101 can be integrally configured. For example, the touch panel 270a is configured so that the light transmittance does not interfere with the display of the rear display unit 101, and is attached to the upper layer of the display surface of the rear display unit 101. Then, the input coordinates on the touch panel 270a are associated with the display coordinates on the rear display unit 101. This makes it possible to configure a GUI as if the user could directly operate the screen displayed on the rear display unit 101. The system control unit 201 can detect taps, double taps, drags, flicks, pinches in, pinches out, swipes, and the like on the touch panel 270a. The touch panel 270a may be any of various touch panels, such as a resistive film type, a capacitive type, a surface acoustic wave type, an infrared type, an electromagnetic induction type, an image recognition type, and an optical sensor type. Depending on the method, there is a method that detects that a touch has occurred when there is contact with the touch panel, or a method that detects that a touch has occurred when a finger or pen approaches the touch panel, but either method is acceptable.

[0046] The eyepiece detection unit 217 detects the approach (eye approach) and departure (eye departure) of the eye (object) to the eyepiece unit 216 (approach detection). The system control unit 201 switches between display (display state) / non-display (non-display state) of the rear display unit 101 and the in-finder display unit 229 depending on the state detected by the eyepiece detection unit 217. At least in shooting mode and when the display destination switching is automatic, the system control unit 201 sets the display destination to the rear display unit 101 while the eye is not placed near the subject and sets the in-finder display unit 229 to a non-display state. Also, when the eye is placed near the subject, the display destination is set to the in-finder display unit 229 and the rear display unit 101 to a non-display state.

[0047] When an object approaches, infrared light emitted from a light-projecting section (not shown) of the eyepiece detection section 217 is reflected and enters a light-receiving section (not shown) of the infrared proximity sensor. Depending on the amount of incident infrared light received by the infrared proximity sensor, it is possible to detect the approach of an object to the eyepiece section 216 and to determine how close the object is to the eyepiece section 216 (eyepiece distance). When it detects the approach of an object to the eyepiece section 216, the system control section 201 can start displaying the in-finder display section 229. This makes it possible to display the in-finder display section 229 with as little delay as possible when the user looks through the eyepiece section 216.

[0048] In addition, when the eye contact detection unit 217 detects an object approaching within a predetermined distance from the eye contact unit 216 from a non-eye contact state (non-approach state), it determines that the eye contact has been detected, and transmits an eye contact detection notification to the system control unit 201. In addition, when the object that was detected as approaching from the eye contact state (approach state) moves away from the eye contact state by a predetermined distance or more, it determines that the eye contact has been detected, and transmits an eye contact detection notification to the system control unit 201. The threshold value for detecting the eye contact and the threshold value for detecting the eye contact may be different, for example, by providing a hysteresis. In addition, after the eye contact is detected, the eye contact state is assumed to remain until the eye contact is detected. After the eye contact is detected, the non-eye contact state is assumed to remain until the eye contact is detected. In this way, the system control unit 201 performs display control of the rear display unit 101 and the in-finder display unit 229 according to the eye contact state or the eye contact state detected by the eye contact detection unit 217.

[0049] The eye proximity detection unit 217 is not limited to an infrared proximity sensor, and other sensors may be used as long as they can detect the approach of an eye or an object that can be regarded as an eye.

[0050] [Embodiment 1] Next, the first embodiment will be described with reference to FIGS.

[0051] FIG. 3 is a diagram illustrating the transition of information relating to the display characteristics of content set in the digital camera 100 and the display device 300 when multiple pieces of content are played back continuously in the first embodiment.

[0052] The digital camera 100 and the display device 300 are connected by an HDMI cable. By connecting one end of the HDMI cable to a connector arranged inside the terminal cover 104 of the digital camera 100 and connecting the other end to a video input terminal of the display device 300, it becomes possible to display the content generated by the digital camera 100 on the display device 300. In addition, when the communication unit 254 of the digital camera 100 and the display device 300 are connected by the HDMI cable, it is possible to change the HDMI connection setting. In this embodiment, an example will be described in which an HDMI connection setting of a color gamut BT601 and a gamma characteristic sRGB and an HDMI connection setting of a color gamut BT2020 and a gamma characteristic PQ are switched according to the display characteristics of the content to be transmitted to the display device 300 and displayed. Note that the connection setting may be switched to a connection setting other than these connection settings according to the display characteristics of the content. In this embodiment, the playback button 113 is pressed to transition to a playback mode, and the content recorded on the recording medium 250 is played. Note that the content in this embodiment is, for example, a video or a still image, but is not limited to these, and may be content other than images.

[0053] The user can set the content to be played back (hereinafter also referred to as playback content) that is selected sequentially according to the direction of rotation by rotating the sub electronic dial 107 clockwise or counterclockwise. The user can also continuously change the playback content by continuously rotating the sub electronic dial 107. In this embodiment, the first content 301 is first played back as the playback content selected by the sub electronic dial 107. Next, the playback content is successively changed to the second content 302, the third content 303, and the fourth content 304 by continuously rotating the sub electronic dial 107 clockwise, and then the rotation operation of the sub electronic dial 107 is stopped.

[0054] Each of the contents 301 to 304 has characteristic information recorded therein regarding the color gamut and gamma characteristic of the contents 301 to 304. The first content 301 and the third content 303 are SDR (Standard Dynamic Range) contents having a color gamut of BT601 and a gamma characteristic of sRGB, and recorded in a file format such as JPEG. The second content 302 and the fourth content 304 are HDR (High Dynamic Range) contents having a color gamut of BT2020 and a gamma characteristic of PQ, and recorded in a file format such as HEIF.

[0055] The first connection setting 307 is information about the display characteristics of the content set in the digital camera 100 and the display device 300 when the first content 301 is played back by the display device 300, and is information including a color gamut and a gamma characteristic. The color gamut of the first connection setting 307 is BT601, and the gamma is sRGB, and the display device 300 is set to a mode capable of displaying the first content 301 based on the color gamut and gamma characteristic of the first connection setting 307. Since the color gamut and gamma characteristic of the first connection setting 307 match the color gamut and gamma characteristic of the first content 301, the display device 300 can faithfully display the color and brightness of the first content 301. The first display result 312 is a playback result of the first content 301 displayed on the display device 300.

[0056] The second connection setting 308 is information on the display characteristics of the content set in the digital camera 100 and the display device 300 when the second content 302 is reproduced by the display device 300. Since the color gamut of the second content 302 is BT2020 and the gamma is PQ, if the color gamut and gamma characteristics of the second connection setting 308 are matched with the color gamut and gamma characteristics of the second content 302, the color and brightness of the second content 302 can be faithfully displayed. However, in this embodiment, in order to suppress screen flicker during content reproduction caused by changing the connection setting between the digital camera 100 and the display device 300, when the content to be reproduced is continuously changed, the connection setting is maintained without being changed. Therefore, the color gamut and gamma characteristics of the second connection setting 308 are maintained as BT601 and sRGB, similar to the first connection setting 307. When the content to be reproduced is continuously changed, for example, the amount of rotation of the sub electronic dial 107 per unit time exceeds a threshold value. In this case, the color gamut and gamma characteristics of the second content 302 do not match those of the second connection setting 308. Therefore, the second content 302 displayed on the display device 300 has different colors and brightness from the original content, and depending on the content, it may be difficult for the user to view the content. Therefore, in this embodiment, a conversion process of the color gamut and gamma characteristics is performed on the second content 302 generated by the digital camera 100 so that the color gamut and gamma characteristics match those of the second connection setting 308. The fifth content 305 is a content in which the color gamut and gamma characteristics of the second content 302 are converted to T601, which is the color gamut, and sRGB, which is the gamma characteristics, of the second connection setting 308. The range of color and brightness that can be expressed with the color gamut and gamma characteristics of BT601 and sRGB is narrower than the case where the color gamut and gamma characteristics are BT2020 and PQ. For this reason, although the color and brightness of the second content 302 are not faithfully represented, appropriate mapping is performed so that the color and brightness fall within the ranges of BT601 and sRGB. The second display result 313 is the playback result of the second content 302 (fifth content 305) displayed on the display device 300. The color gamut and gamma characteristics of the fifth content 305 match the color gamut and gamma characteristics of the second connection setting 308.Therefore, the display device 300 faithfully displays the colors and brightness of the fifth content 305 obtained by converting the color gamut and gamma characteristics of the second content 302 based on the color gamut and gamma characteristics of the second connection setting 308.

[0057] The third connection setting 309 is information about the display characteristics of the content that are set in the digital camera 100 and the display device 300 when the third content 303 is played back by the display device 300. As in the case of playing back the first content 301, the color gamut and gamma characteristics of the third connection setting 309 match those of the third content 303. For this reason, no conversion process of the color gamut and gamma characteristics is performed as in the case of the second content 302, and the display device 300 can faithfully display the colors and brightness of the third content 303. The third display result 314 is the playback result of the third content 303 displayed on the display device 300.

[0058] The fourth connection setting 310 is information on the display characteristics of the content set in the digital camera 100 and the display device 300 when the fourth content 304 is played back by the display device 300. As in the case of playing back the second content 302, the color gamut and gamma characteristics BT2020 and PQ of the fourth content 304 do not match the color gamut and gamma characteristics BT601 and sRGB of the fourth connection setting 310. Therefore, in order to suppress flickering on the screen during content playback, a conversion process is performed on the fourth content 304 so that the color gamut and gamma characteristics match those of the fourth connection setting 310. The sixth content 306 is a content obtained by converting the color gamut and gamma characteristics of the fourth content 304 to the color gamut T601 and gamma characteristics sRGB of the fourth connection setting 310. The fourth display result 315 is a playback result of the fourth content 304 (sixth content 306) displayed on the display device 300.

[0059] When the fourth display result 315 is displayed on the display device 300, the user stops the rotation of the sub electronic dial 107 and ends the selection and change of the playback content. In this case, the digital camera 100 judges whether there is a difference between the color gamut and gamma characteristics of the selected content (hereinafter also referred to as the selected content) and the color gamut and gamma characteristics of the connection setting. The waiting time from when the user stops the rotation of the sub electronic dial 107 until checking the difference between the selected content and the connection setting will be described later with reference to FIG. 4. In this embodiment, since there is a difference between the color gamut and gamma characteristics of the fourth content 304 and the fourth connection setting, the color gamut and gamma characteristics of the connection setting are changed to match the color gamut and gamma characteristics of the selected content. The fifth display result 316 is a display state of the display device 300 during which the connection setting is being changed, and the playback content is not displayed and the screen is blacked out.

[0060] The fifth connection setting 311 is a connection setting in which the color gamut and gamma characteristics are changed so as to match the fourth content 304. The sixth display result 317 is a display result of the display device 300 when the color gamut and gamma characteristics are changed so as to match the fourth content 304. Since the color gamut and gamma characteristics of the fourth content 304 and the fifth connection setting 311 match, the display device 300 can faithfully display the color and brightness of the fourth content 304. FIG. 4 is a diagram for explaining the control of the waiting time from when the continuous change of the playback content is stopped until the color gamut and gamma characteristics of the connection setting are changed to the color gamut and gamma characteristics of the selected content. As described in FIG. 3, in this embodiment, when the user stops the rotation operation of the sub electronic dial 107, it is confirmed whether there is a difference in the color gamut and gamma characteristics between the selected content and the connection setting at that time. In this case, the waiting time until the difference in the color gamut and gamma characteristics between the selected content and the connection setting is confirmed as follows.

[0061] FIG. 4A illustrates a case where the color gamut and gamma characteristic of the selected content are different from those of the candidate content that may be selected next when the change of the playback content is stopped. The content 400 at the start of the change is the selected content when the user starts rotating the sub electronic dial 107. The color gamut and gamma characteristic of the content 400 are BT601 and sRGB, and the connection setting between the digital camera 100 and the display device 300 at this time is also the same. After that, the user continues to rotate the sub electronic dial 107, and the connection setting during that time is maintained as BT601 and sRGB regardless of the color gamut and gamma characteristic of the selected content. The content 401 at the time of stopping the change is the selected content when the user stops rotating the sub electronic dial 107. The color gamut and gamma characteristic of the content 401 are BT2020 and PQ. The candidate content 402 is the content that may be selected next when the user stops rotating the sub electronic dial 107. The color gamut and gamma characteristic of the selection candidate content 402 are BT601 and sRGB, which are different from BT2020 and PQ of the content 401 at the time of stopping the change. In this way, when the continuous change of the content is stopped, if the color gamut and gamma characteristic of the content 401 at the time of stopping the change differ from the color gamut and gamma characteristic of the selection candidate content that may be selected next, the waiting time until the difference between the color gamut and gamma characteristic of the content and the connection setting is determined is longer than the waiting time when the color gamut and gamma characteristic of the content 401 at the time of stopping the change coincides with the color gamut and gamma characteristic of the selection candidate content that may be selected next (FIG. 4(b)). This is processing assuming that the timing at which the user stops the rotation operation of the sub electronic dial 107 is not accurate. In this embodiment, it is assumed that the user intended to stop the sub electronic dial 107 at the selection candidate content A402, but ended up stopping it at the content 401 at the time of the previous change stop. The grace period until the user corrects the error and changes the content again is extended.

[0062] FIG. 4B illustrates an example in which the color gamut and gamma characteristics of the selected content match those of the color gamut and gamma characteristics of a selection candidate content that may be selected next when the user stops the change of the playback content. Selection candidate content B403 is a content that may be selected next when the user stops the rotation operation of the sub electronic dial 107. The color gamut and gamma characteristics of selection candidate content B403 are BT2020 and PQ, which match those of content 401 at the time of the change stop. In this case, even if the user stops the sub electronic dial 107 too early, the color gamut and gamma characteristics of the content remain BT2020 and PQ. Therefore, the waiting time until the difference between the color gamut and gamma characteristics of the selected content and the connection setting is determined is not extended.

[0063] In this embodiment, when the continuous change of contents is stopped, attention is paid to the selection candidate content that could have been selected next, but attention may be paid to the content preceding the selection candidate content in case the user stops rotating the sub electronic dial 107 too late. Also, attention may be paid to either or both of the content before and after the selection candidate content.

[0064] <Control processing> Next, the display control process of the digital camera 100 of this embodiment will be described with reference to FIG.

[0065] 5 is realized by system control unit 201 loading a program stored in non-volatile memory 256 into system memory 252, executing it, and controlling each component of digital camera 100. The process in Fig. 5 is started when digital camera 100 is powered on and the operation mode of system control unit 201 is set to the playback mode.

[0066] In step S500, the system control unit 201 accepts a user's operation to select content to be reproduced. The system control unit 201 detects that the sub electronic dial 107 has been rotated, and determines the content to be reproduced from among the contents recorded on the recording medium 250 according to the direction of rotation.

[0067] In step S501, the system control unit 201 determines whether the content being reproduced is being changed continuously. The system control unit 201 determines whether the sub electronic dial 107 is being rotated at a frequency equal to or greater than a predetermined frequency. If the system control unit 201 determines that the content is not being changed continuously (NO in step S501), the process proceeds to step S502. If the system control unit 201 determines that the content is being changed continuously (YES in step S501), the system control unit 201 does not change the connection settings in step S502, and the process proceeds to step S503.

[0068] In step S502, the system control unit 201 changes the connection settings between the digital camera 100 and the display device 300 so that the color gamut and gamma characteristics match those of the selected content.

[0069] In step S503, the system control unit 201 decodes the selected content. The image processing unit 224 decodes the content data encoded in a format such as JPEG, and places the decoded content data in the memory 232 in a predetermined format such as YUV.

[0070] In step S504, the system control unit 201 resizes the content data decoded in step S503 to match the resolution of the display device 300. The decoded result acquired in step S503 has the width and height at the time of content generation, so the size is changed to match the width and height of the resolution of the display device 300. For example, if the display device 300 can display full HD images, the width is 1920 and the height is 1080, and if the display device 300 can display 4K resolution images, the width is 3840 and the height is 2160. This resized result is placed in the memory 232.

[0071] In step S505, the system control unit 201 determines whether there is a difference in color gamut and gamma characteristics between the selected content and the connection settings. If the content connection settings were changed in step S502, or if the content selected by the user happens to match the current connection settings (NO in step S505), the system control unit 201 proceeds to step S513. If the system control unit 201 determines that there is a difference in color gamut and gamma characteristics between the selected content and the connection settings (YES in step S505), the system control unit 201 proceeds to step S506.

[0072] In step S506, the system control unit 201 converts the color gamut and gamma characteristics of the content data resized in step S504 so that the data matches the current content connection settings.

[0073] In step S507, the system control unit 201 transmits to the display device 300 the content data whose color gamut and gamma characteristics have been converted in step S506.

[0074] In step S508, the system control unit 201 determines whether the color gamut and gamma characteristics of the current content and the next selection candidate content match. If the system control unit 201 determines that the color gamut and gamma characteristics of the current content and the next selection candidate content match (YES in step S508), the process proceeds to step S509, and the standby time is set to 500 milliseconds. If the system control unit 201 determines that the color gamut and gamma characteristics of the current content and the next selection candidate content do not match (NO in step S508), the process proceeds to step S510, and the standby time is set to 1000 milliseconds.

[0075] In step S511, system control unit 201 determines whether the user has changed the content to be reproduced before the waiting time set in step S509 or S510 has elapsed. If system control unit 201 determines that the content to be reproduced has been changed during the waiting time (YES in step S511), the process returns to step S501, and performs the processes from step S501 onwards for the newly selected content. If system control unit 201 determines that the content to be reproduced has not been changed during the waiting time (NO in step S511), the process proceeds to step S512.

[0076] In step S512, system control unit 201 changes the connection settings between digital camera 100 and display device 300 so that the color gamut and gamma characteristics match those of the selected content.

[0077] In step S513, the system control unit 201 transmits the content data resized in step S504 to the display device 300. Note that the resized content data is the content before the conversion of the color gamut and gamma characteristics in step S506 is performed, and is transmitted to the display device 300 while maintaining the color gamut and gamma characteristics of the selected content.

[0078] In step S514, system control unit 201 determines whether or not to end the playback mode. System control unit 201 determines whether or not the user has performed an operation to end the playback mode, such as pressing playback button 113. If system control unit 201 determines to end the playback mode (YES in step S514), it ends the process, and if system control unit 201 determines not to end the playback mode (NO in step S514), it returns the process to step S500 and waits until the user selects the next content.

[0079] According to the first embodiment, when playing back a plurality of contents with different color gamuts and gamma characteristics while continuously changing them, the connection settings between the digital camera 100 and the display device 300 are not changed and no reconnection is performed, thereby suppressing screen flicker. Furthermore, when the continuous content changing is finished, the connection settings between the digital camera 100 and the display device 300 are changed to match the color gamut and gamma characteristics of the content to be played back, thereby making it possible to faithfully display the colors and brightness of the content.

[0080] In this embodiment, an example has been shown in which the color gamut and gamma characteristics of the content and connection settings are focused on, but the connection settings may also be controlled by focusing on other elements related to the image, such as data range, frame rate, and resolution.

[0081] [Embodiment 2] Next, a second embodiment will be described with reference to FIGS.

[0082] In the second embodiment, an example is described in which the connection settings are changed when the user starts to continuously change the content being played, and the frequency of changing the connection settings after the user stops continuously changing the content is reduced, thereby enabling the content to be played quickly.

[0083] FIG. 6 is a diagram showing the transition of connection settings when the playback content is changed continuously in the second embodiment.

[0084] The first content 600 is the content that the user initially selects as the content to be reproduced, and the color gamut and gamma characteristics are BT601 and sRGB. The first connection setting 606 is the connection setting for reproducing the first content 600, and the color gamut and gamma characteristics are BT601 and sRGB that match those of the first content 600. The first display result 611 is the display result when the first content 600 is displayed on the display device 300.

[0085] Here, it is assumed that the user rotates the sub electronic dial 107 to start continuous change of the content to be reproduced. In this case, the color gamut and gamma characteristics of each of a plurality of selection candidate contents corresponding to the direction in which the user rotates the sub electronic dial 107 are acquired. Also, when a predetermined ratio or more of contents having a combination of a specific color gamut and gamma characteristics exist (for example, 50% or more), the connection setting is changed to the specific color gamut and gamma characteristics.

[0086] 6, the color gamuts and gamma characteristics of the second content 601, third content 602, and fifth content 605 are BT2020 and PQ, and only the fourth content 603 is BT601 and sRGB. Since the combination of BT2020 and PQ exceeds 50%, the connection settings are changed. A second display result 612 is the display state of the display device 300 while the connection settings are being changed, and the entire screen is blacked out.

[0087] The second connection setting 607 is a connection setting when the second content 601 is played. The third connection setting 608 is a connection setting when the third content 602 is played. The fifth connection setting 610 is a connection setting when the fifth content 605 is played. As described above, these connection settings are changed to BT2020 and PQ when the user starts to change the content to be played continuously, and the connection settings are maintained. Similarly, the color gamut and gamma characteristics of the fourth connection setting 609 are also BT2020 and PQ, but the color gamut and gamma characteristics of the fourth content 603 to be played at this time are BT601 and sRGB. In this way, even if there is a difference between the color gamut and gamma characteristics of the content to be played and the connection setting, the initially changed connection setting is maintained as BT2020 and PQ during the continuous change of the content to be played. The converted third content 604 is a content obtained by converting the color gamut and gamma characteristics of the third selected content 602 so that they match the color gamut and gamma characteristics of the fourth connection setting 609. As a result, a playback result in which the color gamut and gamma characteristics of the fourth selected content 603 are converted to BT2020 and PQ is displayed as a fifth display result 615. Meanwhile, the third display result 613, fourth display result 614, and sixth display result 616 all display playback results in the color gamut and gamma characteristics of the playback content, BT2020 and PQ.

[0088] FIG. 7 is a flowchart showing the display control process of the digital camera 100 of the second embodiment.

[0089] In the process of FIG. 7, the same processes as those in FIG. 5 of the first embodiment are denoted by the same step numbers.

[0090] In step S500, system control unit 201 accepts a user's selection operation of content to be reproduced.

[0091] In step S700, system control unit 201 determines whether or not the user has started successive changes in the content being reproduced. If system control unit 201 determines that the user has not started successive changes in the content being reproduced (NO in step S700), it performs the same processes as steps S502 to S514 in Fig. 5. If system control unit 201 determines that the user has started successive changes in the content being reproduced (YES in step S700), it proceeds to step S701.

[0092] In step S701, the system control unit 201 acquires the color gamuts and gamma characteristics of up to 10 selection candidate contents in the content change direction. The content change direction is the direction in which the sub electronic dial 107 is rotated (clockwise or counterclockwise), and acquires the color gamuts and gamma characteristics of a content group that may become selection candidates when the user continues to rotate the sub electronic dial 107. In this embodiment, the total number of selection candidate contents is up to 10, but is not limited to 10 and other numbers may be used as the maximum value.

[0093] In step S702, the system control unit 201 determines whether or not there is a combination of color gamut and gamma characteristics exceeding 50% among the color gamuts and gamma characteristics of the selection candidate contents acquired in step S701. A ratio other than 50% may be adopted. If the system control unit 201 determines that there is no combination of color gamut and gamma characteristics exceeding 50% (NO in step S702), the process proceeds to step S503. If the system control unit 201 determines that there is a combination of color gamut and gamma characteristics exceeding 50% (YES in step S702), the process proceeds to step S703.

[0094] In step S703, system control unit 201 changes the connection settings to a combination of color gamut and gamma characteristics that exceeds 50%, and proceeds to step S503. If the connection settings are changed in step S703, the probability that the color gamut and gamma characteristics of the selected content and the connection settings are compared in step S505 to determine that there is no difference between them (NO in step S505) increases. This makes it possible to reduce the frequency of the color gamut and gamma characteristic conversion process in step S506 and the connection setting change process in step S512.

[0095] According to the second embodiment, when playing a plurality of contents with different color gamuts and gamma characteristics while continuously changing them, the connection settings between the digital camera 100 and the display device 300 set at the time when the continuous change of the content to be played started are maintained and no reconnection is performed, so that screen flickering can be suppressed. Furthermore, when the continuous change of the content is ended, it is possible to reduce the frequency of changing the connection settings between the digital camera 100 and the display device 300 to match the color gamut and gamma characteristics of the content to be played, and the frequency of converting the color gamut and gamma characteristics of the content to match the connection settings between the digital camera 100 and the display device 300. This also reduces the frequency of reconnection when the continuous change of the content is ended, so that screen flickering can be suppressed and the color and brightness of the content can be faithfully displayed.

[0096] [Variations] (i) In the second embodiment, when the user starts to continuously change the content to be reproduced, an example has been described in which the connection settings are changed according to the content corresponding to the rotation direction of the sub electronic dial 107, but other change conditions may be applied. For example, the connection settings may be changed to color gamut and gamma characteristics suitable for HDR content when at least one HDR content exists in the recording medium 250, regardless of the rotation direction of the sub electronic dial 107. To achieve this, the process of steps S700 to S703 in FIG. 7 may be changed. The color gamuts and gamma characteristics of all the contents recorded in the recording medium 250 are checked in order, and when the color gamut and gamma characteristics of HDR content exist, the color gamut and gamma characteristics of the connection settings are changed. (ii) As in the above modification (i), the connection settings may be changed to match the content recorded on the recording medium 250, whichever has more SDR content and HDR content. This can also be implemented by changing the processing from step S700 to step S703 in FIG. 7 and checking the color gamut and gamma characteristics of all content recorded on the recording medium 250. (iii) In the above-described embodiments, the user changes the content to be reproduced by rotating the sub electronic dial 107. However, the content to be reproduced may be changed by using a cross button or other operation members. In this case, the waiting time from the end of the continuous content change to the change of the connection settings may be changed depending on the method of changing the content. To achieve this, for example, the process of steps S508 to S510 in FIG. 5 may be changed so that the connection settings are changed immediately upon detecting that the user has released his / her finger from the button. (iv) In relation to the above-mentioned modification (iii), an operation such as swiping on a touch panel may be applied as a method for changing the playback content. In this case, since the frequency of changing the content by swiping is lower than the frequency of changing the content by dialing, the influence of screen flicker is also considered to be small, and the connection setting control of this embodiment may not be executed.

[0097] [Other embodiments] The present invention can also be realized by a process in which a program for implementing one or more of the functions of the above-described embodiments is supplied to a system or device via a network or a storage medium, and one or more processors in a computer of the system or device read and execute the program. The present invention can also be realized by a circuit (e.g., ASIC) that implements one or more of the functions.

[0098] The invention is not limited to the above-described embodiments, and various modifications and variations are possible without departing from the spirit and scope of the invention. Accordingly, the following claims are appended to apprise the public of the scope of the invention.

[0099] The disclosure of this specification includes the following display control device, control method, and program. [Configuration 1] A selection means for selecting a content to be reproduced from a plurality of contents; an output means for outputting the content to be reproduced selected by the selection means to a display means; a control means for controlling setting information relating to display characteristics set in the output means and the display means, when the content to be reproduced is continuously changed by the selection means, the control means does not change the setting information based on the content to be reproduced, A display control device characterized by performing control so that, when the content to be reproduced is not continuously changed by the selection means, the setting information is changed based on the content to be reproduced. [Configuration 2] a means for decoding the content selected by the selection means; 2. The display control device according to configuration 1, further comprising: means for resizing the decoded content to match a resolution of the display means. [Configuration 3] The display control device according to configuration 1 or 2, characterized in that the control means sets a waiting time for when the content to be played is not being changed continuously, and changes the setting information to match the content selected by the selection means when the waiting time has elapsed since the continuous change of the content to be played is stopped. [Configuration 4] a determination unit that determines whether or not display characteristics of candidate content that may be selected next to the content selected by the selection unit are the same as current setting information; The display control device according to configuration 3, characterized in that the control means sets the waiting time when there is a difference between the display characteristics of the candidate content and the current setting information to a time longer than the waiting time when the display characteristics of the candidate content are the same as the current setting information. [Configuration 5] 4. The display control device according to configuration 3, wherein the control means changes the waiting time in accordance with a method for changing the content to be reproduced. [Configuration 6] the content is an image, including a still image or a video; 6. The display control device according to any one of configurations 1 to 5, wherein the display control device is an imaging device that generates the content. [Configuration 7] the display means is an external device connected to the imaging device, 7. The display control device according to configuration 6, wherein the display means is in a blackout state while the setting information is being changed. [Configuration 8] 8. The display control device according to any one of configurations 1 to 7, wherein the display characteristics include a color gamut and gamma characteristics that can be represented by the content. [Configuration 9] The content includes HDR (High Dynamic Range) content and SDR (Standard Dynamic Range) content, The display control device according to configuration 8, wherein the color gamut and gamma characteristics of the SDR content include BT601 and sRGB, and the color gamut and gamma characteristics of the HDR content include BT2020 and PQ. [Configuration 10] the output means and the display means are connected by an HDMI cable; 10. The display control device according to any one of configurations 1 to 9, wherein the setting information is an HDMI connection setting. [Configuration 11] The display control device according to any one of configurations 1 to 10, characterized in that when the content to be played is continuously changed by the selection means, the control means does not change the setting information based on the content to be played, and when the display specification of the content to be played does not correspond to the setting information set in the output means and the display means, the display control device controls the content to be played, converted according to the setting information, to be output by the output means. [Configuration 12] when the selection means starts successive change of the content to be reproduced, the control means acquires display characteristics of a plurality of candidate contents which may be selected next to the content selected by the selection means; When a content having a specific display characteristic among the display characteristics of the plurality of candidate contents is present at a predetermined rate or more, the setting information is changed to match the specific display characteristic; 12. The display control device according to any one of configurations 1 to 11, wherein the changed setting information is maintained until the continuous change of the content to be played back is completed. [Configuration 13] The display control device of configuration 12, characterized in that when the selection means starts continuous changing of the content to be played back, the control means changes the setting information to information suitable for the content that is more abundant among SDR (Standard Dynamic Range) content and HDR (High Dynamic Range) content included in the candidate content. [Configuration 14] A control method for a display control device, comprising: The display control device includes: A selection means for selecting a content to be reproduced from a plurality of contents; an output unit that outputs the content to be reproduced selected by the selection unit to a display unit, The control method includes: a step of controlling setting information relating to display characteristics set in the output means and the display means, In the step, when the content to be reproduced is continuously changed by the selection means, the setting information is not changed based on the content to be reproduced, A control method comprising the steps of: when the content to be reproduced is not changed continuously by the selection means, performing control so as to change the setting information based on the content to be reproduced. [Configuration 15] A program for causing a computer to function as a display control device according to any one of claims 1 to 13. [Explanation of symbols]

[0100] 100... digital camera, 101... display unit, 107... sub electronic dial, 201... system control unit, 300... display device

Claims

1. A selection means for selecting a content to be reproduced from a plurality of contents; an output means for outputting the content to be reproduced selected by the selection means to a display means; a control means for controlling setting information relating to display characteristics set in the output means and the display means, the control means, when the content to be played is being continuously changed by the selection means, does not change the setting information based on the content to be played, and when the setting information set in the output means and the display means does not correspond to a display characteristic of the content to be played, converts the content to be played in accordance with the setting information and outputs the converted content from the output means to the display means, and when the setting information set in the output means and the display means corresponds to the display characteristic of the content to be played, controls the content to be played to be output from the output means to the display means without converting the content to be played in accordance with the setting information; A display control device characterized by: when the content to be played is not continuously changed by the selection means, changing the setting information based on the content to be played, and controlling the content to be played from the output means to the display means without converting it according to the setting information.

2. a means for decoding the content selected by the selection means; 2. The display control device according to claim 1, further comprising: a resizing unit for resizing the decoded content to match a resolution of the display unit.

3. The display control device according to claim 1, characterized in that the control means sets a waiting time for when the content to be played is not being continuously changed, and changes the setting information to match the content selected by the selection means in response to the elapse of the waiting time since the continuous change of the content to be played was stopped.

4. a determination unit that determines whether or not display characteristics of candidate content that may be selected next to the content selected by the selection unit are the same as current setting information; 4. The display control device according to claim 3, wherein the control means sets the waiting time when there is a difference between the display characteristics of the candidate content and the current setting information to a time longer than the waiting time when the display characteristics of the candidate content are the same as the current setting information.

5. Having an operation means for receiving a user operation for changing the content to be played back, The display control device according to claim 3 , wherein the control means changes the waiting time in response to the user operation.

6. the content is an image, including a still image or a video; The display control device according to claim 1 , wherein the display control device is an imaging device that generates the content.

7. the display means is an external device connected to the imaging device, 7. The display control device according to claim 6, wherein the display means is in a blackout state while the setting information is being changed.

8. The display control device according to claim 1 , wherein the display characteristics include a color gamut and a gamma characteristic that can be represented by the content.

9. The content includes HDR (High Dynamic Range) content and SDR (Standard Dynamic Range) content, The display control device according to claim 8 , wherein the color gamut and gamma characteristics of the SDR content are BT601 and sRGB, and the color gamut and gamma characteristics of the HDR content include BT2020 and PQ.

10. the output means and the display means are connected by an HDMI (registered trademark) cable; The display control device according to claim 1 , wherein the setting information is an HDMI connection setting.

11. The display control device according to claim 1, characterized in that when the content to be played is continuously changed by the selection means, the control means does not change the setting information based on the content to be played, and when the display characteristics of the content to be played do not correspond to the setting information set in the output means and the display means, converts the color gamut and gamma characteristics of the content to be played converted according to the setting information and controls it to be output by the output means.

12. when the selection means starts successive change of the content to be reproduced, the control means acquires display characteristics of a plurality of candidate contents which may be selected next to the content selected by the selection means; When a content having a specific display characteristic among the display characteristics of the plurality of candidate contents is present at a predetermined rate or more, the setting information is changed to match the specific display characteristic; The display control device according to claim 1 , wherein the changed setting information is maintained until the continuous change of the content to be reproduced is completed.

13. The display control device according to claim 12, characterized in that, when the selection means starts continuous changing of the content to be played back, the control means changes the setting information to information suitable for the content that is more abundant among SDR (Standard Dynamic Range) content and HDR (High Dynamic Range) content included in the candidate content.

14. A control method for a display control device, comprising: The display control device includes: A selection means for selecting a content to be reproduced from a plurality of contents; an output means for outputting the content to be reproduced selected by the selection means to a display means, The control method includes: a step of controlling setting information relating to display characteristics set in the output means and the display means, In the step, when the content to be played is continuously changed by the selection means, the setting information is not changed based on the content to be played, and when the setting information set in the output means and the display means does not correspond to the display characteristics of the content to be played, the content to be played is converted in accordance with the setting information and output from the output means to the display means, and when the setting information set in the output means and the display means corresponds to the display characteristics of the content to be played, the content to be played is output from the output means to the display means without being converted in accordance with the setting information; A control method characterized by: when the content to be played is not continuously changed by the selection means, changing the setting information based on the content to be played, and controlling so that the content to be played is output from the output means to the display means without being converted in accordance with the setting information.

15. A program for causing a computer to function as the display control device according to any one of claims 1 to 13.

Images