JP2011221524A - Display device and control method thereof, television receiver, program, and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display an image with high quality and a high level of user satisfaction.SOLUTION: A television receiver 1 includes: a user detection unit 13 for detecting a user who satisfies a predetermined position condition or posture condition on the basis of a position or posture of the user using the device; and an image quality adjustment instruction unit 17 for adjusting image quality with an image quality adjustment value associated with the user detected by the user detection unit 13 or an image quality adjustment value associated with the position condition or posture condition of the detected user, and notifying an image quality adjustment unit 5 to display the image on a display unit 6. It allows a user to be provided with an image adjusted in accordance with image quality that the user likes or an image adjusted in accordance with image quality suited for a position or posture of the user.

Description

  The present invention relates to a display device including a display unit that displays video, a control method thereof, a television receiver, a program, and a recording medium.

  In the display device, a technique for changing the image quality setting according to the content or the viewing environment has been proposed in order to realize the image quality according to the user's preference. For example, Patent Documents 1 to 3 have been reported as techniques for correcting image quality according to user preferences and the like during program playback.

  Patent Document 1 describes an image display device that determines image quality parameters by presenting a plurality of sample images with different image quality parameters and allowing a user to select a desired sample image.

  Patent Document 2 describes a television receiver that determines image quality by allowing a user to select sample moving images having different image quality.

  In Patent Document 3, characteristics such as topic and theme information for a program currently being broadcast on television are determined, and data such as audio and video setting values are stored in a storage unit in a pre-defined optimum. A system is described that conforms to the receiver characteristics table.

  Non-Patent Document 1 describes a television receiver that automatically adjusts image quality so as to display optimum image quality in accordance with the brightness of the room and the color of illumination.

  For example, Patent Documents 4 and 5 have been reported as technologies for specifying an imaging target based on an image acquired by an imaging device mounted on a display device and processing a display image according to the imaging target.

  Patent Literature 4 describes a display device that acquires user's biological information with a CCD camera mounted on the display device and adjusts the color of an image to be displayed according to the biological information.

  Patent Document 5 describes a technique for identifying a target according to the movement of a target in an image from a USB camera mounted on a television receiver and switching the resolution of an image to be recorded according to the identified target. .

  Patent Document 6 describes a display system in which an infrared angle sensor is provided on the display device main body side, and a viewing angle is registered in the remote control main body and an angle registration signal is output when the display unit is operated by remote control from different angles. Yes.

JP 2007-147828 A (released on June 14, 2007) JP 2001-119644 A (published on April 27, 2001) JP 2001-515675 A (published on September 18, 2001) JP 2007-3618 A (published January 11, 2007) JP 2008-124873 A (released May 29, 2008) JP 2008-180860 A (released on August 7, 2008)

“Omakase Donpisha High Quality” [online], Toshiba, (searched on January 18, 2010), Internet <http://www.toshiba.co.jp/regza/detail/omakase/about.html>

  When using a television receiver, a plurality of users such as a father, a mother, and a child are watching. However, even if a plurality of users are viewing, the degree of interest in the video displayed on the television receiver varies depending on the user. In addition, images that are easy to view differ depending on the position and attitude of the user who uses the television receiver, and it cannot be said that the user always likes the same image quality. Further, the technique of Patent Document 6 has a problem that a plurality of users have to set an angle with a remote controller in advance. In addition, an angle detection sensor that uses infrared rays is provided on the front surface of the main unit of the device. However, in televisions that use fluorescent tubes as backlights, interference from infrared rays emitted from the fluorescent tube side when the power is turned on, etc. There is a problem that the incident angle of infrared rays cannot be accurately determined.

  The present invention has been made to solve the above-described problems, and the object thereof is to display images displayed on a display device even when a plurality of users use the display device. Display video with high user satisfaction by displaying video adjusted to the preference of the most interested user, or by displaying video adjusted to image quality suitable for the user's position or orientation. It is an object of the present invention to provide a display device capable of displaying a message.

  In order to solve the above problems, a display device according to the present invention is a display device including a display unit that displays an image, and is based on a position or posture of a user who uses the device. User detection means for detecting a user who satisfies a position condition or posture condition, and a setting value for adjusting the image quality of the video from the correspondence information of the recording unit that stores in advance correspondence information associated with each user. The image processing apparatus includes: an image quality adjusting unit that acquires the set value corresponding to the user detected by the detecting unit, adjusts the image quality of the video with the acquired set value, and displays the image on the display unit.

  In addition, a display device control method according to the present invention is a display device control method including a display unit that displays video in order to solve the above-described problem, and the position of a user who uses the display device Alternatively, a recording unit storing correspondence information in which a user detection step for detecting a user who satisfies a predetermined position condition or posture condition based on the posture and a setting value for adjusting the image quality of the video is associated with each user. The image quality adjustment step of acquiring the setting value corresponding to the user detected in the user detection step from the correspondence information, adjusting the image quality of the video with the acquired setting value, and displaying on the display unit It is characterized by including.

  According to the above configuration and method, a user who satisfies a predetermined position condition or posture is detected based on the position or posture of the user, and based on a setting value included in the correspondence information associated with the detected user. Adjust the image quality and display it on the display. Accordingly, the video can be adjusted to the image quality desired by the user that satisfies the predetermined position condition or posture condition. Therefore, for example, by setting a predetermined position condition or posture condition as a condition for detecting a user who mainly uses the display device, such as a user located closest to the display device, the display device displays It is possible to display a video that matches the preference of the user who has the highest interest in the video that is being displayed. Thereby, even when a plurality of users are using the display device, it is possible to display a video according to the user's preference, and to display a video with high image quality that satisfies the user. it can.

  In order to solve the above-described problem, a display device according to the present invention is a display device including a display unit that displays an image, and a predetermined position based on the position or posture of a user who uses the device. User correspondence means for detecting a user that satisfies a condition or posture condition, and the correspondence of the recording unit that stores in advance correspondence information associated with the predetermined position condition or posture condition, and a setting value for adjusting the image quality of the video Image quality adjusting means for acquiring the set value corresponding to the position condition or posture condition of the user detected by the user detecting means from the information, adjusting the image quality of the video with the acquired set value, and displaying on the display unit; It is characterized by having.

  In addition, a display device control method according to the present invention is a display device control method including a display unit that displays video in order to solve the above-described problem, and the position of a user who uses the display device Alternatively, a user detection step for detecting a user who satisfies a predetermined position condition or posture condition based on the posture, and correspondence information in which a setting value for adjusting the image quality of the video is associated with the predetermined position condition or posture condition The setting value corresponding to the user position condition or posture condition detected in the user detection step is acquired from the correspondence information, and the image quality of the video is adjusted with the acquired setting value. And an image quality adjustment step to be displayed on the display unit.

  According to the above configuration and method, a user who satisfies a predetermined position condition or posture condition is detected based on the position or posture of the user, and is included in the correspondence information associated with the detected user position condition or posture condition. The image quality of the video is adjusted based on the set value and displayed on the display unit. Therefore, for example, as a predetermined position condition or posture condition, by using correspondence information in which a setting value for setting the image quality to the energy saving mode is associated with the condition that the user is viewing while looking away, the user can look away. The image can be adjusted to the image quality of the energy saving mode suitable for the condition of being. Thus, an image adjusted to an image quality suitable for a predetermined position condition or posture condition can be displayed. Accordingly, it is possible to provide an optimal video in accordance with the position or posture of the user who uses the display device, and it is possible to display the video with an image quality with high user satisfaction.

  In the display device according to the present invention, the recording unit stores face information characterizing a user's face that satisfies the predetermined position condition or posture condition for each of the predetermined position condition or posture condition. It further comprises feature acquisition means for acquiring the face information of a user who uses the device, wherein the user detection means includes face information acquired by the feature acquisition means, face information stored in the recording unit, It is preferable to detect a user who satisfies a predetermined position condition or posture condition.

  According to said structure, a user detection means detects the user who satisfy | fills predetermined | prescribed positional conditions or attitude | position conditions based on the face information which characterizes a user's face. Thereby, it is possible to detect a user who satisfies a predetermined condition easily and accurately.

  In the display device according to the present invention, the recording unit stores feature information that characterizes a user for each user, a feature acquisition unit that acquires the feature information of a user who uses the device, and It further comprises user specifying means for specifying who the user detected by the user detecting means is by collating the feature information acquired by the feature acquiring means with the feature information recorded in the recording unit. Preferably it is.

  According to the above configuration, the user detected by the user detection means is specified based on the detected user face information. In this way, a user who satisfies the condition can be specified, so that the image quality can be adjusted with the setting value desired by the user, and the video can be displayed with an image quality with a high degree of satisfaction of the user.

  Further, in the display device according to the present invention, the user detection unit may detect the user at the position closest to the user apparatus, the user at the predetermined recommended position, or the user at the sitting position by using the predetermined position condition or posture. It is preferable to detect as a user who satisfies the conditions.

  According to the above configuration, for example, a condition that can be considered as a condition of a user who mainly uses the display device in general can be set as the predetermined position condition or posture condition, and thus the display device is mainly used. The video can be adjusted with the image quality desired by the user. As a result, it is possible to display an image with higher image quality that satisfies the user.

  Further, in the display device according to the present invention, the recording unit is configured to associate a setting value for adjusting the image quality of the video to the energy saving mode with the posture condition that the user's posture is the lying-down state or the looking-away state. Information is preferably stored in advance.

  According to the above configuration, for example, a setting value for adjusting the image quality to the energy saving mode can be associated with a condition that can be considered as a condition in which the video that is generally displayed is not viewed intensively. And the user satisfaction is not reduced.

  Further, in the display device according to the present invention, the recording unit previously stores correspondence information in which a setting value for gamma adjustment of the image quality of the video is associated with a positional condition that the user's position is outside a predetermined recommended range. It is preferable to memorize.

  According to the above configuration, the setting value for gamma adjustment so as to cancel the viewing angle can be associated with a condition that is generally considered to be a condition that makes it difficult to view the image with a viewing angle, so that the user can easily view the image. Video can be provided.

  Further, in the display device according to the present invention, the recording unit has a positional condition that the user's position is closer to the user apparatus than a predetermined recommended position, and the image quality contrast, contour enhancement, noise reduction, It is preferable that correspondence information associated with a setting value for adjusting at least one of chromaticity and chromaticity is stored in advance.

  According to the above configuration, a setting value for adjusting at least one of image quality contrast, edge enhancement, noise reduction, and chromaticity to a condition that is generally considered to be a condition that the user's eyes are likely to get tired from viewing. Therefore, it is possible to provide an image in which the user's eyes are less tired in consideration of the health condition of the user.

  Further, in the display device according to the present invention, the recording unit stores in advance correspondence information associated with the predetermined position condition or posture condition as a setting value for adjusting the image quality of the video, and the image quality The adjusting means adjusts the image quality of the video with the set value corresponding to the user detected by the user detecting means, and further acquires the position condition or posture of the user detected by the user detecting means obtained from the correspondence information. It is preferable that the image quality of the video is adjusted with the set value corresponding to the condition and displayed on the display unit.

  According to the above configuration, after detecting a user who satisfies a predetermined position condition or posture condition, adjusting the image quality of the video with a setting value associated with the detected user, and further detecting the position condition or posture condition of the detected user Adjust the image quality with the setting value associated with. Thereby, the image can be adjusted to an image quality suitable for the user's preference and further suitable for the user's position condition or posture condition. Therefore, for example, it is possible to provide an image adjusted to an image quality that is preferred by the user and easier to view, and thus it is possible to provide an image with a higher degree of satisfaction to the user.

  A television receiver according to the present invention includes the display device according to the present invention.

  The display device according to the present invention may be realized by a computer. In this case, a program for realizing the display device in the computer by operating the computer as the display device, and a computer-readable recording medium recording the program are also included in the scope of the present invention.

  The display device according to the present invention adjusts the image quality of the video and user detection means for detecting a user who satisfies a predetermined position condition or posture based on the position or posture of the user who uses the device. The setting value corresponding to the user detected by the user detecting means is acquired from the corresponding information in the recording unit that stores the corresponding information associated with each user in advance. Image quality adjusting means for adjusting the image quality and displaying it on the display unit, so that even when a plurality of users are using the display device, they are most interested in the video displayed on the display device. By displaying the video according to the user's preference, the video can be displayed with an image quality with high user satisfaction.

  In addition, the display device according to the present invention adjusts the image quality of the video and user detection means for detecting a user who satisfies a predetermined position condition or posture based on the position or posture of the user who uses the device. The setting value for performing the setting corresponding to the position condition or posture condition of the user detected by the user detection means from the correspondence information of the recording unit that stores in advance the correspondence information associated with the predetermined position condition or posture condition Image quality adjustment means for acquiring set values, adjusting the image quality of the video with the acquired set values, and displaying it on the display unit, so that the image adjusted to the image quality suitable for the user's position or orientation is displayed. By doing so, it is possible to display an image with an image quality with high user satisfaction.

It is a figure which shows typically the structure of the display apparatus which concerns on one Embodiment of this invention. It is an external appearance schematic diagram of the display apparatus which concerns on one Embodiment of this invention. It is a figure which shows typically an example of the aspect in which a some user utilizes a display apparatus. It is a figure which shows typically the other example of the aspect in which a some user utilizes a display apparatus. It is a flowchart which shows an example of the flow of the user detection process in the display apparatus which concerns on one Embodiment of this invention. It is a flowchart which shows the other example of the flow of a user specific process in the display apparatus which concerns on one Embodiment of this invention. It is a figure which shows an example of the user registration screen displayed on the display part of the display apparatus which concerns on one Embodiment of this invention. It is a figure which shows an example of the corresponding | compatible table recorded on the recording part of the display apparatus which concerns on one Embodiment of this invention. It is a figure which shows the other example of the corresponding | compatible table recorded on the recording part of the display apparatus which concerns on one Embodiment of this invention. It is a figure which shows typically an example of the viewing-and-listening attitude | position of the user who utilizes a display apparatus. It is a figure which shows typically the other example of the viewing-and-listening attitude | position of the user who utilizes a display apparatus. It is a flowchart which shows the other example of the flow of a user's detection process in the display apparatus which concerns on one Embodiment of this invention. It is a flowchart which shows an example of the flow of the image quality adjustment process by the user's viewing attitude in the display apparatus which concerns on one Embodiment of this invention. It is a figure which shows the structure of another embodiment of the display apparatus which concerns on this invention. It is a figure which shows the structure of another embodiment of the display apparatus which concerns on this invention.

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

[Main components of the television receiver 1]
A configuration of a television receiver (display device) according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a diagram schematically illustrating the configuration of the television receiver 1, and FIG. 2 is a schematic external view of the television receiver 1.

  In FIG. 1, a remote control light receiving unit 2, a camera 3, a recording unit 4, an image quality adjustment unit 5, a display unit 6, and a main control unit 10 are provided in the television receiver 1, and a remote control from a remote control (remote controller) 7. It is configured to accept and process signals. The main control unit 10 includes an instruction acquisition unit 11, an image quality setting unit 12, a user detection unit (user detection unit) 13, a face extraction unit (feature acquisition unit) 14, a user specification unit (user specification unit) 15, and a genre acquisition. Section 16 and an image quality adjustment instruction section (image quality adjustment means) 17.

  The remote control light receiving unit 2 receives a remote control signal from the remote control 7 with light such as infrared rays. The remote control light receiving unit 2 notifies the main control unit 10 of the received remote control signal.

  The recording unit 4 stores various data and programs. As an example of the recording unit 4, a ROM (Read Only Memory) that is a read-only semiconductor memory that stores fixed data such as a program necessary for the operation of the main control unit 10, data used for calculation, and calculation results RAM (Random Access Memory) as a so-called working memory for temporarily storing and the like. The recording unit 4 stores image quality adjustment values (setting values), user information, position condition information, posture condition information, and the like. Here, the image quality adjustment value is a setting value for adjusting the image quality, and the user information is information about the user such as identification information of the user who has set the image quality adjustment value, for example, position condition information or attitude Condition information is information relating to a predetermined position condition or posture condition. The recording unit 4 may be provided in the television receiver 1 or in an external device connected to the television receiver 1.

  The image quality adjustment unit 5 supplies the display unit 6 with video signals such as digital and analog broadcast content, content recorded on DVD, BD, HDD, and the like, content acquired via a network, and the like. Further, the image quality adjustment unit 5 adjusts the image quality of the video signal based on the image quality adjustment value acquired from the main control unit 10 and supplies the adjusted adjusted video signal to the display unit 6.

  The display unit 6 displays a video based on the video signal from the image quality adjustment unit 5. Specifically, the display unit 6 includes a display element such as an LCD, an EL (Electroluminescence) display, a PDP (Plasma Display Panel), and a driver circuit that drives the display element based on the received video signal. . The video includes characters as well as pictures and graphics, and also includes still images and moving images.

  The camera 3 is provided in the television receiver 1 and shoots the front periphery of the display unit 6 of the television receiver 1 in order to detect a person (user) using the television receiver 1. Is. The camera 3 notifies the user detection unit 13 and the face extraction unit 14 of the main control unit 10 of the captured image information. For example, a CCD (Charge Coupled Device) camera can be used as the camera 3, but is not limited thereto.

  The camera 3 may also have a distance detection function for detecting the distance from the television receiver 1 to the user. The camera 3 may notify the user detection unit 13 of the detected distance information together with the captured image information. The distance detection function of the camera 3 may be any function that detects the distance from the television receiver 1 to the user by a conventionally known distance detection method.

  The main control unit 10 comprehensively controls various components in the television receiver 1. The function of the main control unit 10 is realized by a CPU (Central Processing Unit) executing a program stored in a storage device such as a RAM or a flash memory. The instruction acquisition unit 11, the image quality setting unit 12, the user detection unit 13, the face extraction unit 14, the user specifying unit 15, and the image quality adjustment instruction unit 17 included in the main control unit 10 will be described below.

  The instruction acquisition unit 11 acquires an instruction (remote control signal) from the user by operating the remote controller 7 from the remote control light receiving unit 2. The instruction acquisition unit 11 notifies the image quality setting unit 12 of an instruction from the user according to the acquired remote control signal. Specifically, the instruction acquisition unit 11 notifies the image quality setting unit 12 of a remote control signal when the acquired remote control signal is a signal related to setting of an image quality adjustment value or a signal related to user registration. As a signal relating to the setting of the image quality adjustment value or the signal relating to the user registration, for example, a signal (setting screen display instruction) for displaying a screen for setting the image quality adjustment value (image quality setting screen) and a user name registration are performed. Signal (user registration instruction) and the like.

  The image quality setting unit 12 is a means for setting an image quality adjustment value and registering user information or a predetermined position condition or posture condition in association with the set image quality adjustment value. Specifically, when the image quality setting unit 12 acquires the setting screen display instruction from the instruction acquisition unit 11, the image quality setting unit 12 notifies the image quality adjustment unit 5 to display the image quality setting screen. Further, the image quality setting unit 12 sets an image quality adjustment value in accordance with the acquired image quality setting instruction. Furthermore, the image quality setting unit 12 sets the set image quality adjustment value according to the genre of the video, associates the set image quality adjustment value with the genre information, the user information, or the predetermined position condition or posture condition, and as correspondence information It may be recorded in the recording unit 4.

  In addition, the image quality setting unit 12 notifies the image quality adjustment unit 5 to display the user registration screen based on the instruction acquired from the instruction acquisition unit 11 to display the screen for registering the user name (user registration screen). . The image quality setting unit 12 acquires a user name based on the user name registration instruction acquired from the instruction acquisition unit 11, and records the acquired user name as user information in the recording unit 4 in association with the correspondence information. Thereby, the television receiver 1 can set the image quality according to each user.

  The user detection unit 13 detects a user who satisfies a predetermined position condition or posture based on the position or posture of the user who uses the television receiver 1, and uses the detected user information as detected user information. The extraction unit 14, the user identification unit 15, or the image quality adjustment instruction unit 17 is notified. Here, the position of the user who uses the television receiver 1 intends the distance from the display screen of the television receiver 1 to the user, and the attitude of the user means the position of the television receiver 1. The viewing posture of the user when viewing is intended.

  Based on the position or posture of the user who uses the television receiver 1, the user detection unit 13 selects a user who satisfies a predetermined position condition or posture among the plurality of users as the current television receiver 1. May be detected as the main user who is mainly used, and the detected main user information may be notified to the face extraction unit 14 as detected user information. Examples of the predetermined position condition or posture condition include the closest distance from the viewing position to the television receiver 1, the viewing position is a predetermined recommended position, and the viewing position is a sitting position.

  The user detection unit 13 can acquire photographed image information obtained by photographing the user from the camera 3, extract the user's position or posture from the photographed image information, and use it for user detection. In this case, the user detection unit 13 notifies the detected image information of the user to the face extraction unit 14 as detected user information. Further, the user detection unit 13 may detect a user from distance information detected by a distance detection function or the like that the camera 3 has. In this case, the user detection unit 13 notifies the detected distance information of the user to the face extraction unit 14 as detected user information.

  Furthermore, the user detection unit 13 may acquire captured image information from the camera 3 and detect a user based on face information characterizing the user's face acquired from the captured image information. Specifically, the face information characterizing the user's face is collated with face information stored in advance in the recording unit 4 as user face information that satisfies a predetermined position condition or posture condition, and the matching rate is determined in advance. If the value is higher than the specified value, a user having a high matching rate is detected as a user. In this case, the user detection unit 13 notifies the user specifying unit 15 of detected user face information as detected user information. The user face information that satisfies a predetermined position condition or posture condition includes information representing the position or posture of the user such as the eye position and the distance between both eyes.

  A specific method by which the user detection unit 13 detects a user who satisfies a predetermined position condition or posture among a plurality of users based on the position or posture of the user will be described later.

  The face extraction unit 14 acquires detected user information from the user detection unit 13, acquires captured image information from the camera 3, and features points of the user's face identified by the acquired detected user information from the acquired captured image information Is extracted. The face extraction unit 14 identifies a user in the captured image information based on the detected user information acquired from the user detection unit 13, and further extracts a feature point of the user's face. The face extraction unit 14 notifies the user specifying unit 15 of the extracted feature point information of the face as user feature information (feature information). Note that a method for extracting facial feature points is well known, and a description thereof will be omitted.

  Further, the face extraction unit 14 may extract a feature point of the user's face from the captured image information acquired from the camera 3, and notify the image quality setting unit 12 of the extracted feature information of the face as user feature information. Good. The image quality setting unit 12 acquires a user name based on the user name registration instruction acquired from the instruction acquisition unit 11, and uses the user name and the user characteristic information acquired from the face extraction unit 14 as user information in the correspondence information. The information is recorded in the recording unit 4 in association.

  The user specifying unit 15 determines which user is detected by the user detection unit 13 and the face extraction unit 14 among the users registered in the recording unit 4, that is, who is the detected user. It is something to identify. Specifically, the user specifying unit 15 acquires user feature information from the face extraction unit 14 and collates the acquired user feature information with the user feature information of each user registered in the recording unit 4. In addition, since this collation method is well-known, the description is abbreviate | omitted.

  As a result of the collation, when the matching rate between any of the user feature information registered in the recording unit 4 and the user feature information acquired from the face extraction unit 14 is higher than a predetermined value (the matching rate is high), The user with a high matching rate is identified as the detected user, and the user information including the user characteristic information is read from the recording unit 4. The user identification unit 15 notifies the read image information to the image quality adjustment instruction unit 17.

  The user specifying unit 15 notifies the image quality adjustment instruction unit 17 of the read image quality adjustment value, reads the user name associated with the matched user feature information from the recording unit 4, and displays the read user name on the display unit. 6 may be notified to the image quality adjustment unit 5 so as to be displayed.

  Note that the user identifying unit 15 may identify who each user included in the photographed image information is based on the user feature information extracted from the photographed image information acquired by the face extracting unit 14 from the camera 3. . In this case, the user detection unit 13 detects a user who satisfies a predetermined position condition or posture condition from each user specified by the user specification unit 15, and sends the detected user information to the image quality adjustment instruction unit 17. You may be notified.

  The image quality adjustment instruction unit 17 is means for instructing the image quality adjustment unit 5 to adjust the image quality based on the image quality adjustment value stored in the recording unit 4. The image quality adjustment instruction unit 17 may instruct the image quality adjustment unit 5 to adjust the image quality based on the image quality adjustment value set by the user specified by the user specifying unit 15.

  Specifically, the image quality adjustment instruction unit 17 acquires the user information of the user detected from the user specifying unit 15, and reads the image quality adjustment value associated with the acquired user information from the correspondence information of the recording unit 4. . The image quality adjustment instruction unit 17 notifies the image quality adjustment unit 5 of the read image quality adjustment value. As a result, an image adjusted based on the image quality adjustment value registered as the detected image quality adjustment value of the user's preference is displayed on the display unit 6 of the television receiver 1, and the detected user's preference is displayed. Video can be displayed with image quality.

  The main control unit 10 may include a genre acquisition unit 16. The genre acquisition unit 16 is means for acquiring genre information. As a method for acquiring genre information, when the video signal is a digital broadcast, there are a method for acquiring genre information included in EPG (Electronic Program Guide) data, a method for acquiring genre information from the characteristics of the video signal, and the like. Can be mentioned.

  The image quality adjustment value included in the correspondence information stored in the recording unit 4 may be associated with the genre information acquired by the genre acquisition unit 16 together with the user information. That is, the correspondence information may include image quality adjustment values set for each genre by each user. In this case, when the image quality adjustment instruction unit 17 acquires the user information of the user detected from the user specifying unit 15, the image quality adjustment instruction unit 17 acquires the genre information of the video signal to be displayed from the genre acquisition unit 16, and the acquired user information and The image quality adjustment value associated with the genre information is read from the correspondence information of the recording unit 4. Then, the image quality adjustment instruction unit 17 notifies the image quality adjustment unit 5 to adjust the image based on the read image quality adjustment value. As a result, an image adjusted based on the image quality adjustment value registered as the image quality adjustment value that the detected user likes for each genre is displayed on the display unit 6 of the television receiver 1. The video can be displayed with the image quality preferred for each genre.

  Here, the image quality adjustment instruction unit 17 may adjust the video with an image quality adjustment value corresponding to the position condition or posture condition of the user detected by the user detection unit 13. In this case, the user detection unit 13 detects a user who satisfies a predetermined position condition or posture condition. As the predetermined position condition or posture condition at this time, the viewing posture is in the lying position or looking away, the viewing position is outside the predetermined recommended range, and the viewing position is closer to the television receiver than the predetermined recommended position And the like.

  The recording unit 4 records image quality adjustment values associated with the predetermined position condition information or posture condition information as correspondence information. The image quality adjustment instruction unit 17 acquires the user's position condition information or posture condition information detected by the user detection unit 13, and stores the image quality adjustment value associated with the acquired user's position condition information or posture condition information as a recording unit. 4 correspondence information is read out. Then, the image quality adjustment instruction unit 17 notifies the image quality adjustment unit 5 to adjust the image quality based on the read image quality adjustment value.

  As a result, the display unit 6 of the television receiver 1 displays an image adjusted based on the image quality adjustment value registered as the image quality adjustment value suitable for the predetermined position condition or posture condition, and the detected user An image can be displayed with an image quality suitable for the position or posture of the image.

[Outline of Television Receiver 1]
The television receiver 1 includes, for example, a liquid crystal display device having a screen size of 16: 9 (1920 × 1010 dots) as the display unit 6. The television receiver 1 includes a CPU and a memory connected to a bus, and the operation of the television receiver 1 is controlled by various control programs recorded in the CPU and the memory. That is, the television receiver 1 of this embodiment is controlled by a computer system including a CPU, and a program for operating the television receiver 1 by a computer is recorded in a memory.

  The television receiver 1 includes a digital tuner and an analog tuner, and may receive both digital broadcasting and analog broadcasting. Further, the television receiver 1 may include a solid-state memory such as an HDD or an SD card, a disk device such as a BD (Blu-ray disc), a DVD or a CD, and an external input terminal to which various external devices can be connected. . Further, the television receiver 1 may incorporate a BD / DVD / CD recording / reproducing unit in the main body. Furthermore, the television receiver 1 may be capable of receiving IP broadcasts by including an IP broadcast tuner.

  In addition, the television receiver 1 includes an AV switch unit, a digital demodulation unit, a separation unit (DMUX), a video decode / capture unit, a video selector unit, a video processing unit, an addition circuit, a display control unit, an EPG / OSD / reservation. A processing unit, an audio decoding unit, an audio selector unit, an audio output conversion unit, a speaker, a channel selection unit, a communication control unit, and an OPC sensor may be provided.

  Here, an external configuration of the television receiver 20 will be described with reference to FIG. As shown in FIG. 2, the television receiver 20 includes a camera 21, a panel unit 22, and a bezel unit 23. Since the camera 21 is preferably provided at a position that does not hinder viewing of the video displayed on the panel unit 22, the camera 21 may be provided on the bezel unit 23. The camera 21 is preferably provided at a position where the user's viewing state can be seen, and may be provided in the upper center of the bezel portion. The optimum position for installing the camera 21 varies depending on the number of inches of the television receiver 20 or the like.

[Main user detection process based on user position]
Next, referring to FIGS. 3 to 5, when a plurality of users use the television receiver 20, a process of detecting a main user who mainly uses the television receiver 20 based on the position of the user. Will be described. In this way, even when a plurality of users use the television receiver 20 by detecting the main user under a predetermined position condition and adjusting the video to the detected image quality of the main user's preference. The video adjusted to the user's preferred image quality can be displayed.

  3 and 4 are diagrams each schematically showing an example of a mode in which a plurality of users use the television receiver 20, and FIG. 5 is an example of a flow of main user detection processing in the television receiver 20. It is a flowchart to show.

  As shown in FIG. 3, when the television receiver 20 is viewed at home or the like, the television receiver 20 is viewed at a position where a plurality of users 31 surround the table or the like and everyone can see the display screen. As described above, when a plurality of users 31 use the television receiver 20 at the same time, the image quality is adjusted to the preference of the user who is most interested in the video displayed on the television receiver 20. It is preferable to display an image. For example, if a video is displayed in the preferred image quality of a user who does not watch the displayed video such as a user who is looking away, the user who is watching the video concentrated on the displayed video is not satisfied. May occur.

  When the television receiver 20 is used by a plurality of users, the user who has the highest interest in the video displayed on the television receiver 20 is designated as the television receiver 20. By displaying an image adjusted to the image quality desired by the detected main user, an image with high user satisfaction is displayed. Therefore, in the television receiver 20, the viewing position or viewing posture of the user is set as a detection condition for detecting the main user. Specifically, in general, the position closest to the television receiver 20, the distance to the television receiver 20 is a predetermined recommended distance, the viewing posture is the sitting position, and the viewing posture is not looking away. In such a case, since the user who satisfies the condition is considered to be the main user, the main user is detected based on these conditions.

  In the television receiver 20, a plurality of users 31 who are viewing the television receiver 20 are photographed by the camera 21 provided in the television receiver 20, and the photographed image information is detected by the user of the main control unit 10. Notification to the unit 13. And the user detection part 13 performs a main user detection process as shown in FIG. 5 based on the acquired picked-up image information, and detects a main user. 3 and 4, the camera 21 is provided so as to protrude from the television receiver 20. However, the present invention is not limited to this, and the camera 21 is arranged so that the surface of the television receiver 20 is flat. May be embedded in the television receiver 20.

  In the television receiver 20, the user 30 viewing at the position closest to the television receiver 20 can be detected as the main user in the case shown in FIG. In general, it is known that the optimum viewing position of the television receiver 20 is a position where the distance from the television receiver 20 is 3H when the height of the television receiver 20 is H. . Therefore, a position with a distance of 3H from the television receiver 20 may be set as a recommended viewing position, and the user at that position may be detected as the main user. For example, in the case shown in FIG. 4, the user 40 at the recommended viewing position can be detected as the main user from the plurality of users 41.

  Note that the position condition as the detection condition for the main user is not limited to the above-described conditions, and a condition suitable as the detection condition for the main user can be appropriately set. Such detection condition information is set in advance and the recording unit 4 The user detection unit 13 may acquire the detection condition from the recording unit 4 and use it for detection of the main user.

  With reference to FIG. 5, an example of the flow of the main user detection process in the television receiver 20 will be described. The user detection unit 13 that has acquired the captured image information from the camera 21 first determines whether or not a plurality of users are viewing based on the captured image information (step S50). In the user detection unit 13, for example, eyes included in the captured image information can be detected, and it can be determined whether or not a plurality of users are viewing based on the number of detected eyes. What is necessary is just to determine whether several users are viewing and listening with a well-known technique.

  In step S50, when the user detection unit 13 determines that a plurality of users are viewing (YES), the user detection unit 13 detects the position of each user (step S51). There are several possible methods for detecting the user's distance in the user detection unit 13, for example, when an image is taken at a specific distance (such as 1 m) at the time of user registration, and the user can be specified from the captured image information The distance of the user can be detected based on the ratio of the size of the original photograph such as the face and eyes and the ratio of the distance between the eyes. Further, by detecting the contours of a plurality of users' faces and the distance between both eyes, a method of detecting the distance of each user by comparison with each user is also possible. The position of the user may be detected by this technique. In step S50, when the user detection unit 13 determines that a plurality of users are not viewing (NO), the main user detection process is terminated.

  Next, based on the position of each user detected in step S51, the user detection unit 13 determines whether the position of each user is different (step S52). If the user detection unit 13 determines in step S52 that the position of each user is different (YES), the user detection unit 13 determines whether any user is in the recommended viewing position in step S53. To do. Here, when the user detection unit 13 determines in step S52 that each user is viewing at the same position (NO), the main user detection process is terminated.

  If the user detection unit 13 determines in step S53 that any user is at the recommended viewing position (YES), the user detection unit 13 sets the user at the recommended viewing position as the main user in step S54. In step S53, when the user detection unit 13 determines that no user is at the recommended viewing position (NO), the user detection unit 13 selects a user closest to the display screen of the television receiver 20 in step S55. Set as primary user. After setting the main user in this manner, the user detection unit 13 notifies the face extraction unit 14 of detected user information including information on the detected main user.

[Main user identification processing]
For the main user detected by the user detection unit 13, facial feature points are extracted by the face extraction unit 14, and user feature information including information on the extracted facial feature points is notified to the user identification unit 15. And the user specific | specification part 15 specifies who the said main user is from user characteristic information. A main user specifying process for specifying who the main user is by the user specifying unit 15 will be described with reference to FIG. FIG. 6 is a flowchart showing another example of the flow of the main user specifying process in the television receiver 20.

  As illustrated in FIG. 6, in step S <b> 61, the user specifying unit 15 acquires user feature information including information on the feature points of the main user's face notified from the face extraction unit 14. And the user specific | specification part 15 acquires the information of the feature point of the user's face contained in the said characteristic information from the recording part 4 in which the characteristic information which characterizes a user for every user was memorize | stored in step S62. The user identification unit 15 compares the information on the facial feature points of the main user acquired from the face extraction unit 14 with the facial feature point information for each user acquired from the recording unit 4, and the matching rate is determined in advance. It is determined whether there is information higher than the obtained value (step S63).

  In step S63, when the user specifying unit 15 determines that there is information on the facial feature points of the user whose matching rate with the facial feature information of the main user is higher than a predetermined value (YES), In step S64, the user with the high matching rate is specified as the main user. In step S63, when the user identification unit 15 determines that there is no information on the feature points of the user's face whose matching rate with the information on the feature points of the main user's face is higher than a predetermined value (NO), The main user specifying process is terminated.

  As described above, the user specifying unit 15 that has specified who the main user is reads out the user information including the user characteristic information of the specified main user from the recording unit 4 and notifies the image quality adjustment instruction unit 17 of the user information. Then, the image quality adjustment instruction unit 17 reads the image quality adjustment value associated with the user information acquired from the user specifying unit 15 from the correspondence information of the recording unit 4, and displays the video adjusted based on the read image quality adjustment value. The image quality adjustment unit 5 is notified as described above.

[Preference image quality adjustment]
Here, the image quality adjustment value used by the image quality adjustment unit 5 to adjust the image quality will be described with reference to FIGS. FIG. 7 is a diagram illustrating an example of a user registration screen displayed on the display unit 6 of the television receiver 20, and FIG. 8 is an example of a correspondence table recorded in the recording unit 4 of the television receiver 20. FIG. 9 is a diagram illustrating another example of the correspondence table recorded in the recording unit 4 of the television receiver 20.

  As shown in FIG. 7, the television receiver 20 displays a user registration screen on the display unit 6. When such a user registration screen is displayed on the display unit 6, the image quality setting unit 12 receives an input of a user name by operating the remote controller 7. Examples of the user name include father, mother, child 1, child 2, and the like, but are not limited thereto. The image quality setting unit 12 records the input user name in the recording unit 4 in association with the image quality adjustment value. At this time, the image quality setting unit 12 may record the input user name in the recording unit 4 in association with the image quality adjustment value set for each genre. In the present embodiment, the configuration in which the image quality setting unit 12 receives the input of the user name has been described. However, the present invention is not limited to this, and a configuration may be adopted in which a preset user name is selected.

  The image quality setting unit 12 may record the image quality adjustment value in the recording unit 4 as a sample image. For example, the image quality setting unit 12 may record the sample image in the recording unit 4 in association with the user name, or record the sample image set for each genre in association with the user name as shown in FIG. It may be recorded in part 4. Then, the image quality adjustment instruction unit 17 obtains a sample image included in the correspondence information associated with the detected user name of the user from the recording unit 4, and uses the image quality adjustment value so that the image quality is the same as that of the sample image. Is notified to the image quality adjustment unit 5.

  Further, the image quality setting unit 12 may record the image quality adjustment value in the recording unit 4 with a value as shown in FIG. For example, the image quality setting unit 12 may record the image quality adjustment value such as the brightness level in the recording unit 4 in association with the user name, or the image quality such as the brightness level set for each genre as shown in FIG. The adjustment value may be recorded in the recording unit 4 in association with the user name.

  As described above, the image quality setting unit 12 records the user-desired image quality as an image quality adjustment value in the recording unit 4 in association with the user name, and the image quality adjustment instruction unit 17 stores the detected image quality adjustment value of the user. Video acquired from the recording unit 4 and adjusted to the image quality of the detected user's preference by notifying the image quality adjustment unit 5 to adjust the image quality based on the image quality adjustment value and display it on the display unit 6 Can be displayed on the display unit 6.

[Detection process of the main user based on the user's attitude]
Next, referring to FIGS. 10 to 12, when a plurality of users use the television receiver 20, a process of detecting a main user who mainly uses the television receiver 20 based on the posture of the user. Will be described. As described above, even when a plurality of users use the television receiver 20 by detecting the main user under a predetermined posture condition and adjusting the video to the detected image quality of the main user's preference. The video adjusted to the user's preferred image quality can be displayed.

  10 and 11 are diagrams schematically showing an example of a mode in which a plurality of users use the television receiver 20, and FIG. 12 shows an example of the flow of main user detection processing in the television receiver 20. It is a flowchart to show.

  As shown in FIG. 10, there are various viewing postures of the user who views the television receiver 20, and there are a sitting user 100, a lying user 101, and the like. In addition, as shown in FIG. 11, all of the plurality of users may be prone users 110 and 111. When users with various postures use the television receiver 20 in this way, the user who has the highest interest in the video displayed on the television receiver 20, that is, the television receiver 20 is used. It is preferable to display the video with the image quality desired by the user who is concentrated on the video displayed on the screen. Therefore, in this embodiment, the user who is concentrated on the video displayed on the television receiver 20 is the main user, and the video is displayed with the image quality of his preference as the user with the highest priority. As a detection condition, generally, when the viewing posture is the sitting position, it can be said that the viewing posture is more concentrated on the viewing than when the viewing posture is the supine position. Therefore, a user who satisfies the condition is detected as the main user.

  In the television receiver 20, a plurality of users who are viewing the television receiver 20 are photographed by a camera 21 included in the television receiver 20, and the photographed image information is captured by a user detection unit of the main control unit 10. 13 is notified. And the user detection part 13 performs a main user detection process as shown in FIG. 12 based on the acquired picked-up image information, and detects a main user.

  In the television receiver 20, the main user detection process can detect the user 100 whose sitting posture is the sitting position in the case shown in FIG. 10 as the main user. Note that the posture condition as the main user detection condition is not limited to this condition, and a posture condition suitable for the main user detection condition can be set as appropriate.

  With reference to FIG. 12, an example of the flow of the main user detection process in the television receiver 20 will be described. The user detection unit 13 that has acquired the captured image information from the camera 21 first determines whether or not a plurality of users are viewing based on the captured image information (step S121). In the user detection unit 13, for example, eyes included in the captured image information can be detected, and it can be determined whether or not a plurality of users are viewing based on the number of detected eyes. What is necessary is just to determine whether several users are viewing and listening with a well-known technique.

  In step S121, when the user detection unit 13 determines that a plurality of users are viewing (YES), the user detection unit 13 detects the posture of each user (step S122). In the user detection unit 13, for example, eyes included in the captured image information can be detected, and the posture of each user can be detected based on the sequence of the detected eyes (for example, if both eyes are arranged vertically) However, the present invention is not limited to this, and the postures of a plurality of users may be detected by a known technique. In step S121, when the user detection unit 13 determines that a plurality of users are not viewing (NO), the main user detection process is terminated.

  Next, the user detection unit 13 determines whether or not each user has a different posture based on the posture of each user detected in step S122 (step S123). In step S123, when the user detection unit 13 determines that the postures of the users are different (YES), the user detection unit 13 determines in step S124 whether the viewing posture of any user is the sitting position. judge. If the user detection unit 13 determines in step S123 that each user is viewing with the same posture (NO), the main user detection process is terminated.

  If the user detection unit 13 determines in step S124 that the viewing posture of any user is the sitting position (YES), the user detection unit 13 sets the user whose viewing posture is the sitting position in step S125 as the main user. In step S124, if the user detection unit 13 determines that no user is in the sitting position (NO), the main user detection process is terminated. After setting the main user in this manner, the user detection unit 13 notifies the face extraction unit 14 of detected user information including information on the detected main user.

  Then, the main user detected by the user specifying unit 15 is specified by the same process as the process shown in FIG. 6, and the image quality adjusting unit 17 displays the video adjusted to the image quality desired by the main user by the image quality adjusting instruction unit 17. 5 is notified. As described above, the main user is detected based on the user's posture, and the video adjusted to the main user's favorite image quality is displayed on the display unit 6, so that a plurality of users can use the television receiver 20. Even in such a case, it is possible to provide the user with a video with high user satisfaction.

[Image quality adjustment processing based on user position or orientation]
Next, a process for adjusting the video to an image quality suitable for the viewing position or orientation based on the position or orientation of the user who uses the television receiver 1 will be described with reference to FIG. FIG. 13 is a flowchart illustrating an example of the flow of image quality adjustment processing according to the user's posture in the television receiver 1. In the preferred image quality adjustment process described above, a main user who mainly uses the television receiver 1 is detected from among a plurality of users based on the position or orientation of the user, and the desired image quality of the main user is obtained. Regardless of whether or not there are a plurality of users, the user's satisfaction is also high by adjusting the video to an image quality suitable for the position or posture based on the position or posture of the user regardless of whether or not there are a plurality of users. Video can be displayed.

  When the television receiver 1 is viewed at home or the like, the viewing position and viewing attitude vary, and the image quality suitable for viewing varies depending on the position and attitude. For example, if the user's viewing posture is supine or viewing while looking away, the user is not focused on the displayed image, so the user can determine that the image quality is not particularly concerned, and the energy saving mode User satisfaction can be obtained by displaying with. In addition, when the user is viewing from a position outside the range facing the display screen, that is, when lying on the floor or sitting on the sofa, the display screen On the other hand, since the viewing angle is set in the vertical direction and the horizontal direction, it becomes easier for the user to view the video by displaying the gamma-adjusted video.

  Furthermore, when the user is closer to the television receiver 1 than the general viewing position, or when the user who is far from the normal television receiver 1 is closer, the normal image quality may be increased. In an image in which the image quality is adjusted with the adjustment value, the contrast is too strong, the noise is too much, the edge emphasis is too strong, or the color is too dark. In particular, such a situation should be avoided because the user is easily affected by the child. Further, when the video is 3D, the eyes are more tired than when viewing in 2D, so it is preferable to adjust the image quality to be gentle to the eyes.

  Therefore, in the television receiver 1, in order to display a video with higher user satisfaction, the user's position condition information or posture condition information is set in advance, and a user who satisfies the predetermined condition is detected. In this case, an image adjusted to an image quality suitable for the predetermined condition is displayed. The flow of such image quality adjustment processing will be described with reference to FIG.

  First, the user detection unit 13 detects the posture of the user who is viewing the television receiver 1 (step S131). At this time, when there are a plurality of users, the user detection unit 13 may detect the posture of a specific user (for example, the main user) detected in advance or may detect the posture of an arbitrary user. Good. The user detection unit 13 that has detected the posture of the user in step S131 determines whether or not the viewing posture is the sitting position (step S132). If it is determined in step S132 that the viewing posture is not the sitting position (NO), the user detection unit 13 notifies the image quality adjustment instruction unit 17 of viewing posture information indicating the viewing posture. Here, when the viewing posture is not the sitting position, it is assumed that the viewing position is out of the directly-facing position of the display unit 6 of the television receiver 1 and out of the recommended range. If it is determined in step S132 that the viewing posture is the sitting position (YES), the image quality adjustment process is terminated.

  The image quality adjustment instruction unit 17 is associated with the viewing posture acquired from the recording unit 4 in which the image quality adjustment value suitable for the condition, which is associated with each predetermined position condition information or posture condition information, is recorded as correspondence information. The image quality adjustment value is acquired, and the image quality adjustment unit 5 is notified to adjust the image quality adjustment value.

  As an image quality adjustment value associated with predetermined position condition information or posture condition information, for example, when the viewing posture condition is in the saddle position or looking away, the image quality adjustment in the energy saving mode such as dimming the brightness When the value is associated and the viewing posture condition is the saddle position, or the viewing position condition is out of the recommended range (out of the directly facing position of the display unit 6), the gamma value is sunk, etc. Is associated with the image quality adjustment value. Furthermore, for viewing position conditions closer to the television receiver 1 than a predetermined position, an image quality adjustment value with reduced contrast and contour enhancement, an image quality adjustment value with increased noise reduction, and an image quality with reduced chromaticity Adjustment values and the like are associated.

  The image quality adjustment instruction unit 17 that has acquired the viewing posture information from the user detection unit 13 that has determined that the viewing posture is the sitting position in step S132, adjusts the image quality for gamma adjustment associated with the viewing posture condition of the sitting position from the recording unit 4. A value is acquired, and the image quality adjustment unit 5 is notified to adjust the image quality with the image quality adjustment value (step S133). Subsequently, the user detection unit 13 determines whether or not the viewing posture of the user faces the display screen for a certain time (step S134). In the user detection unit 13, for example, a face included in the captured image information is detected, and an eye that is a part of the face is detected to determine whether it is a side face or a front face. It can be determined whether or not the user is facing the display screen for a certain period of time. However, the present invention is not limited to this, and it may be determined by a known technique. Here, it is determined whether or not the user is looking away by determining whether or not the user is facing the display screen for a certain period of time.

  In step S134, when the user detection unit 13 determines that the user is not facing the screen for a certain period of time (NO), viewing attitude information indicating that the user is not facing the screen for a certain period of time is displayed in the image quality adjustment instruction unit 17. The image quality adjustment instructing unit 17 is notified and acquires an image quality adjustment value for adjusting to the energy saving mode associated with the obtained viewing attitude information, and the image quality adjusting unit so as to adjust the image quality to the energy saving mode with the image quality adjustment value. 5 is notified (step S135). In step S134, when the user detection unit 13 determines that the user is facing the screen for a certain time (YES), the image quality adjustment process is terminated.

  Thus, the television receiver 1 can display an image adjusted to an image quality suitable for the position or orientation of the user by adjusting the image quality based on the position or orientation of the user. High-quality video can be displayed.

[Combination processing of preferred image quality adjustment and image quality adjustment according to user position or posture]
Note that the television receiver 1 displays an image with higher user satisfaction by combining the adjustment of the image quality according to the preference of the main user described above and the adjustment of the image quality suitable for the position or posture of the user. You can also. As such image quality adjustment processing, for example, after the main user detection processing shown in FIG. 5 is performed, the main user identification processing shown in FIG. 6 is performed to identify the main user, and the user position shown in FIG. Alternatively, by performing the image quality adjustment process according to the posture, the image quality adjustment instruction unit 17 adjusts the image quality with the detected image quality adjustment value of the main user's preference and the image quality adjustment value suitable for the position or posture of the main user. The image quality adjustment unit 5 can be notified.

  Such a combination process is performed, for example, when a plurality of users are watching the television receiver 1, the user closest to the television receiver 1 is detected as a main user, and the main user is further moved to a predetermined position. If it is closer to the television receiver 1, the image quality adjustment with higher user satisfaction is achieved by adjusting the image quality with the preferred image quality setting value of the main user and setting only the contrast to be gentle to the eyes. Is possible.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.

[Other forms]
In the present embodiment, the mode in which the camera 3 is built in the main body of the television receiver (display device) 1 and the face of the user is photographed has been described, but the present invention is not limited to this. For example, as shown in FIG. 14, the television receiver 1 and the external camera 51 may be connected via an HDMI receiver 50 by an interface unit conforming to the HDMI standard. Further, although FIG. 14 shows a case where the HDMI standard is adopted, the connection may be realized by an interface unit compliant with the USB standard, the Wi-Fi standard, the DLNA communication standard, or the like.

  As shown in FIG. 15, the external camera 51 may be a camera mounted on a camera-equipped mobile phone 52. In FIG. 15, the camera-equipped mobile phone 52 is connected to the television receiver 1 via the HDMI cable 53. Further, the transmission path may be wired or wireless.

  Further, the user's face detection system can be enhanced by specifying the user's viewing position by using both the camera 3 and the external camera 51 provided in the main body of the television receiver 1.

  Furthermore, as shown in FIG. 14, the television receiver 1 may include a human sensor 54. Further, a line-of-sight detection sensor may be provided instead of the human sensor 54 or together with the human sensor 54. The television receiver 1 incorporates a human sensor 54 and / or a line-of-sight detection sensor to detect a person's movement and / or line of sight, and sets the main control unit 10 so that the camera is photographed only when the user is present. If the control is performed, power consumption for driving the camera of the main body of the television receiver 1 can be reduced.

  Further, the body of the camera 3 may be rotated and tracking driven so that the user's face can be photographed by tracking in the direction of the moving user in conjunction with the human sensor 54.

  In addition, the television receiver 1 may be connected to the Internet and may incorporate Skype (registered trademark) software to realize the Skype (registered trademark) function. In that case, as shown in FIG. 14, the television receiver 1 may further include an audio control unit 55, a microphone 56, and a speaker 57. Then, by incorporating software for realizing the Skype (registered trademark) function into the main control unit 10, the user can use the Skype (registered trademark) function. Specifically, the television receiver 1 transmits the user's figure taken by the external camera 51 (the built-in camera 3 as in the present embodiment) and the voice uttered by the user blown into the microphone 56 over the Internet. The call partner sent from the call partner is displayed on the display unit 6 and the voice emitted by the call partner is displayed on the speaker 57 of the television receiver 1 or the television receiver. What is necessary is to emit from externally connected headphones (not shown) connected to a headphone terminal (not shown) of the main body of the machine 1.

  Finally, each block of the television receiver 1, particularly the main control unit 10, may be configured by hardware logic, or may be realized by software using a CPU as follows.

  That is, the television receiver 1 includes a CPU (central processing unit) that executes instructions of a control program that realizes each function, a ROM (read only memory) that stores the program, and a RAM (random access memory) that expands the program. ), A storage device (recording medium) such as a memory for storing the program and various data. An object of the present invention is a recording medium in which a program code (execution format program, intermediate code program, source program) of a control program for the television receiver 1 which is software for realizing the above-described functions is recorded so as to be readable by a computer. Can also be achieved by reading out and executing the program code recorded on the recording medium by the computer (or CPU or MPU).

  Examples of the recording medium include a tape system such as a magnetic tape and a cassette tape, a magnetic disk such as a floppy (registered trademark) disk / hard disk, and an optical disk such as a CD-ROM / MO / MD / DVD / CD-R. Card system such as IC card, IC card (including memory card) / optical card, or semiconductor memory system such as mask ROM / EPROM / EEPROM / flash ROM.

  Further, the television receiver 1 may be configured to be connectable to a communication network, and the program code may be supplied via the communication network. The communication network is not particularly limited. For example, the Internet, intranet, extranet, LAN, ISDN, VAN, CATV communication network, virtual private network, telephone line network, mobile communication network, satellite communication. A net or the like is available. Further, the transmission medium constituting the communication network is not particularly limited. For example, even in the case of wired such as IEEE 1394, USB, power line carrier, cable TV line, telephone line, ADSL line, etc., infrared rays such as IrDA and remote control, Bluetooth ( (Registered trademark), 802.11 wireless, HDR, mobile phone network, satellite line, terrestrial digital network, and the like can also be used. The present invention can also be realized in the form of a computer data signal embedded in a carrier wave in which the program code is embodied by electronic transmission.

  The present invention can be suitably applied to a television receiver or a portable device capable of viewing a television, such as a mobile phone, a car navigation system, a portable game terminal, and the like.

1 Television receiver (display device)
2 remote control light receiving unit 3 camera 4 recording unit 5 image quality adjustment unit 6 display unit 7 remote control 10 main control unit 11 instruction acquisition unit 12 image quality setting unit 13 user detection unit (user detection means)
14 Face extraction unit (feature acquisition means)
15 User identification part (user identification means)
16 Genre acquisition unit 17 Image quality adjustment instruction unit (image quality adjustment means)

Claims (14)

A display device having a display unit for displaying video,
User detection means for detecting a user who satisfies a predetermined position condition or posture based on the position or posture of the user using the device;
The setting value for adjusting the image quality of the video is acquired from the correspondence information of the recording unit that stores correspondence information associated with each user in advance, and the setting value corresponding to the user detected by the user detection unit is acquired, A display device comprising image quality adjusting means for adjusting the image quality of the video with the acquired set value and displaying the image on the display unit. A display device having a display unit for displaying video,
User detection means for detecting a user who satisfies a predetermined position condition or posture based on the position or posture of the user using the device;
The setting value for adjusting the image quality of the video is determined based on the user position condition detected by the user detection means from the correspondence information of the recording unit that stores in advance correspondence information associated with the predetermined position condition or posture condition. A display apparatus comprising: an image quality adjusting unit configured to acquire the set value corresponding to the posture condition, adjust an image quality of the video with the acquired set value, and display the image on the display unit. The recording unit stores face information characterizing a user's face that satisfies the predetermined position condition or posture condition for each of the predetermined position condition or posture condition,
It further comprises a feature acquisition means for acquiring the face information of the user using the own device,
The user detecting unit detects a user who satisfies a predetermined position condition or posture condition by collating the face information acquired by the feature acquiring unit with the face information stored in the recording unit. The display device according to claim 1 or 2. The recording unit stores, for each user, characteristic information that characterizes the user,
Feature acquisition means for acquiring the above-mentioned feature information of the user using the device;
User identification means for identifying who is the user detected by the user detection means by collating the feature information acquired by the feature acquisition means with the feature information recorded in the recording unit. The display device according to claim 1, wherein the display device is a display device.   The user detecting means detects a user at a position closest to the user apparatus, a user at a predetermined recommended position, or a user at a sitting position as a user satisfying the predetermined position condition or posture condition. The display device according to claim 1.   The recording unit stores in advance correspondence information in which a setting value for adjusting the image quality of the video to an energy saving mode is associated with a posture condition in which the user's posture is in a supine state or a looking away state. The display device according to claim 2.   The recording unit stores in advance correspondence information in which a setting value for gamma adjusting the image quality of the video is associated with a positional condition that the user's position is outside a predetermined recommended range. Item 3. The display device according to Item 2.   The recording unit sets at least one of the image quality contrast, edge enhancement, noise reduction, and chromaticity of the video on the condition that the position of the user is closer to the device than the predetermined recommended position. The display device according to claim 2, wherein correspondence information associated with setting values for adjustment is stored in advance. The recording unit stores in advance correspondence information in which a setting value for adjusting the image quality of the video is associated with the predetermined position condition or posture condition,
The image quality adjusting means adjusts the image quality of the video with the set value corresponding to the user detected by the user detecting means, and further acquires the position condition of the user detected by the user detecting means obtained from the correspondence information. The display device according to claim 1, wherein an image quality of the video is adjusted with the set value corresponding to a posture condition and displayed on the display unit.   A television receiver comprising the display device according to claim 1. A control method for a display device including a display unit for displaying an image,
A user detection step of detecting a user who satisfies a predetermined position condition or posture based on a position or posture of a user who uses the display device;
The setting value for adjusting the image quality of the video is referred to the recording unit storing the correspondence information associated with each user, and the setting value corresponding to the user detected in the user detection step is determined from the correspondence information. A control method comprising: an image quality adjustment step of acquiring, adjusting an image quality of the video with the acquired setting value, and displaying the image on the display unit. A control method for a display device including a display unit for displaying an image,
A user detection step of detecting a user who satisfies a predetermined position condition or posture based on a position or posture of a user who uses the display device;
The user's position condition or posture detected in the user detection step with reference to a recording unit that stores in advance correspondence information associated with the predetermined position condition or posture condition as a setting value for adjusting the image quality of the video A control method, comprising: acquiring the set value corresponding to a condition from the correspondence information; adjusting the image quality of the video with the acquired set value; and displaying the image on the display unit .   A program for operating the display device according to any one of claims 1 to 9, wherein the program causes a computer to function as each of the means. A computer-readable recording medium on which the program according to claim 13 is recorded.

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