JP2009003126A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device capable of appropriately performing luminance adjustment of a picture without changing the installation place of the display device, and receiving the operation signal of a remote controller by avoiding an obstacle to light reception. <P>SOLUTION: A plurality of receptacles 3 are formed to surround a display part 1 in a recess formed at the outer edge part of the display part 1, a plug 5 carrying a brightness sensor 4 or a plug 7 carrying a remote control light receiving part 6 is fit to the receptacle 3. When a user selects the receptacle 3 to which the plug 5 is fit and positions the brightness sensor 4 at a part where it is not influenced by any of sunlight 22 and shadow 27, the display device adjusts the luminance of the display part 1 on the basis of light originally aiming at measurement by the brightness sensor 4, and when the user selects the receptacle 3 to which the plug 7 is fit and positions the remote control light receiving part 6 at a part where it avoids influence by furniture 28, the display device surely receives an operation signal from the remote controller. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a display device that appropriately adjusts brightness according to the brightness of an installation environment.

  Conventionally, a brightness sensor is mounted on a display device such as a television receiver so that the screen brightness can be adjusted according to the ambient brightness. However, when the measurement position of the brightness sensor is fixed, for example, when external light such as sunlight is incident on the brightness sensor, or a part of the illumination light incident on the brightness sensor is an installation such as furniture. When blocked, ambient brightness could not be detected properly. In addition, since the installation location of the display device itself is often limited, it is rather rare that the brightness sensor is in a desirable measurement position with respect to the installation environment of the display device.

On the other hand, Patent Document 1 discloses a technology that includes a plurality of brightness sensors and performs screen brightness adjustment according to the sensor that has detected the strongest brightness.
Japanese Patent Laid-Open No. 2-141796

  However, the technique disclosed in Patent Document 1 has a problem that the brightness of the entire screen may increase more than necessary in a situation where strong external light such as sunlight is incident on a part of the display device. It was.

  The present invention has been made in view of such circumstances, and the object of the present invention is to allow the measurement position of ambient brightness to be freely selected, and when the user adjusts the measurement position, the measurement position after adjustment is used. It is an object of the present invention to provide a display device that can appropriately adjust the screen brightness without changing the installation location by adjusting the screen brightness based on the brightness of the screen. In addition to this, the light receiving position of the operation signal of the remote control device can be freely selected, and when the user adjusts the light receiving position, the display can avoid the light receiving obstacle and receive the operation signal An object is to provide an apparatus.

  The display device according to the present invention has a measuring instrument that measures the brightness of the surroundings, and in the display device that displays an image whose luminance is increased or decreased based on the measurement result of the measuring instrument, the measuring instrument can be attached and detached. A plurality of mounting portions to be mounted are provided.

  In the present invention, when equipped with a plurality of mounting parts of measuring instruments for measuring the ambient brightness, when the user selects the mounting part of the measuring instrument, the selected mounting part as a measurement position, at the measurement position The screen brightness is adjusted based on the brightness of the screen. Accordingly, when the user appropriately adjusts the measurement position of the measuring device, the brightness of the screen is adjusted based on the brightness measured without being affected by the incidence of external light and the shielding of room illumination light.

  The display device according to the present invention is characterized in that the mounting portion is formed on an outer edge portion of a surface on which the image is displayed, and the measuring instrument is fitted to the mounting portion.

  In the present invention, a plurality of mounting portions are formed on the outer edge portion of the image display surface, and a measuring instrument for measuring ambient brightness is fitted to any one of the mounting portions. When the user selects the mounting portion of the measuring device, the measurement position of the measuring device is determined. As a result, the user can easily adjust the measurement position of the measuring instrument that measures the ambient brightness.

  The display device according to the present invention includes a measuring instrument that measures ambient brightness and a light receiver that receives an operation signal of a remote control device, and an image in which luminance is increased or decreased based on a measurement result of the measuring instrument. In the display device for displaying the above, a plurality of mounting portions for detachably mounting the measuring device or the light receiver are provided.

  In the present invention, the measuring instrument for measuring the ambient brightness or the light receiving device for receiving the operation signal of the remote control device is provided with a plurality of detachable mounting parts, and the user can measure the measuring instrument. When the mounting portion of each of the light receivers is selected, the brightness is measured and the operation signal is received using the selected mounting portion as the measurement position and the light receiving position, respectively. Accordingly, when the user appropriately adjusts the measurement position of the measuring device, the brightness of the screen is adjusted based on the brightness measured without being affected by the incidence of external light and the shielding of room illumination light. Further, when the user appropriately adjusts the light receiving position of the light receiver, an operation signal from the remote control device is reliably received.

  In the display device according to the present invention, the mounting portion is formed on an outer edge portion of a surface for displaying the image, and the measuring device and the light receiver are respectively fitted to the mounting portion. It is characterized by.

  In the present invention, a plurality of mounting portions are formed on the outer edge portion of the surface on which an image is displayed, and any one of the other measuring devices is used to measure the ambient brightness on any one of the mounting portions. Is fitted with a light receiver for receiving an operation signal of the remote control device. When the user selects a mounting portion for each of the measuring device and the light receiver, the measuring position and the light receiving position of the measuring device and the light receiver are determined. As a result, the user can easily adjust the measurement position of the measuring instrument that measures the ambient brightness and the light reception position of the operation signal of the remote control device.

  The display device according to the present invention includes a measuring instrument that measures ambient brightness and a light receiver that receives an operation signal of a remote control device, and an image in which luminance is increased or decreased based on a measurement result of the measuring instrument. In the display device for displaying the above, a plurality of mounting portions for detachably mounting the measuring device and a plurality of mounting portions for detachably mounting the light receiver are provided.

  In the present invention, there are provided a plurality of mounting portions for detachably mounting a measuring instrument for measuring ambient brightness and a plurality of mounting portions for detachably mounting a light receiver for receiving an operation signal of a remote control device. When the user selects a mounting portion for each of the measuring device and the light receiver, the selected mounting portion is used as a measurement position and a light receiving position, respectively, and brightness measurement and operation signal reception are performed. Accordingly, when the user appropriately adjusts the measurement position of the measuring device, the brightness of the screen is adjusted based on the brightness measured without being affected by the incidence of external light and the shielding of room illumination light. Further, when the user appropriately adjusts the light receiving position of the light receiver, an operation signal from the remote control device is reliably received.

  According to the present invention, the mounting part of the measuring instrument for measuring the ambient brightness can be freely selected, and when the user selects the mounting part of the measuring instrument and appropriately adjusts the measurement position, the incident of external light And the brightness of the screen is adjusted based on the brightness measured without being affected by the shielding of room lighting. Therefore, it is possible to appropriately adjust the brightness of the screen without changing the installation location of the display device. In addition, the mounting unit is configured so that the measuring device or a light receiver that receives an operation signal of the remote control device can be mounted in common (or one of them selectively), and the user can mount the light receiver. When the light receiving position is appropriately adjusted by selecting the part, it is possible to avoid the light receiving obstacle and receive the operation signal.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof.
(Embodiment)
FIG. 1 is a front view schematically showing a display device according to an embodiment of the present invention. In the figure, reference numeral 1 denotes a display unit using a liquid crystal panel, and an outer package 2 covers the display unit 1 from the outer edge to the back. A plurality of receptacles 3 are disposed on the front surface of the exterior 2 so as to surround the display unit 1 in a recess formed in the peripheral edge.

  One of the receptacles 3 is fitted with a plug 5 carrying a brightness sensor 4, and the plug 5 can be fitted into an arbitrary empty receptacle 3 as indicated by an arrow in the figure. The other one of the receptacles 3 is fitted with a plug 7 carrying a remote control light receiving unit 6. Thus, the receptacle 3 can be fitted with the plug 5 or the plug 7 in common. In the receptacle 3 in which neither the plug 5 nor the plug 7 is fitted, a dummy plug 8 is fitted in order to conceal the recess and protect the terminal portion inside.

  FIG. 2 is a block diagram illustrating a schematic configuration of the display device according to the embodiment. The control unit 11 is a microcomputer including a CPU, a built-in ROM, a bus interface, and an input / output interface. The control unit 11 includes a ROM 12 that stores fixed data such as characters, a RAM 13 that stores temporarily generated data, a brightness sensor 4, a remote control light receiving unit 6, and an image displayed on the display unit 1 via a bus interface. Is connected to a video processing unit 15 that performs the signal processing. The control unit 11 is also connected to a brightness sensor 4, a remote control light receiving unit 6, a video processing unit 15, and a backlight 16 that illuminates the display unit 1 via an input / output interface.

  The control unit 11 reads / writes data from / to the RAM 13, reads brightness from the brightness sensor 4, reads operation signals from the remote control light receiving unit 6, and outputs to the video processing unit 15 according to a program stored in advance in the built-in ROM. Video processing control and luminance control of the backlight 16 are performed. Based on the brightness as a voltage value read from the brightness sensor 4 and the table previously written in the ROM 12, the control unit 11 performs PWM dimming (the high-frequency duty to drive) the brightness of the cold cathode tube of the backlight 16. Adjust the brightness using the up / down dimming method. The luminance of the backlight 16 is increased / decreased according to the intensity of the brightness.

  FIG. 3 is an explanatory diagram schematically illustrating the influence of external light, room light, and indoor installation on the display device according to the embodiment. The lower right front part of the front surface of the display device is irradiated with sunlight 22 that has entered through the window 21 and is not suitable for measuring brightness. Further, the lower left corner of the front surface of the display device is covered with a shade 27 in which the illumination light of the room illumination 25 is blocked by the furniture 26, which is also not suitable for measuring the brightness. Furthermore, due to the influence of other furniture 28, the operation signal of the remote controller 9 does not reach the lower right corner of the front surface of the display device.

  In such an installation place, when the user fits the plug 5 into the receptacle 3 located in a part not affected by any of the sunlight 22 and the shadow 27, the brightness sensor 4 is displayed on the display device. The brightness of the display unit 1 is adjusted based on the light originally intended for measurement. Further, when the user fits the plug 7 into the receptacle 3 located at a position not affected by the other furniture 28, the remote control light receiving unit 6 of the display device is not blocked by the furniture 28 and is not blocked by the remote control 9. The operation signal is received.

  FIG. 4 is a schematic perspective view of the receptacle 3 as viewed from the lower right front side of the display unit 1. The receptacle 3 forms a substantially rectangular parallelepiped cavity, and is surrounded by a peripheral surface 32 and a substantially rectangular inner back surface 33 that are substantially perpendicular to the opening 31. The inner back surface 33 is substantially parallel to the display surface of the display unit 1. All the receptacles 3 are disposed with the surface including one short side of the opening 31 in the peripheral surface 32 as the bottom surface. In order to prevent the plug 5 and the plug 7 from being fitted to the left and right sides of the peripheral surface 32 by mistake, the projecting portion 34 having a semicircular cross section is formed from the opening 31 to the inner back surface. 33 is formed so as to protrude toward the cavity side.

  FIG. 5 is a layout diagram showing a terminal arrangement when the receptacle 3 is viewed from the front side of the display unit 1. The terminal portion 3a for connecting to the plug 5 is formed by arranging three L-shaped plate-like electrodes so as to be bent along the right side surface of the receptacle 3 from the right end portion of the inner back surface 33 in parallel. It is. Further, the terminal portion 3b for connecting to the plug 7 is formed by arranging three L-shaped plate-like electrodes bent from the lower end portion of the inner back surface 33 along the bottom surface of the receptacle 3 at equal intervals. It is. Thereby, the plug 5 and the plug 7 are brought into contact with the common receptacle 3 on the right side surface and the bottom surface of the receptacle 3 by the separate terminal portions 3a and 3b, respectively. The terminal unit 3a and the terminal unit 3b are connected to an input / output interface and a bus interface of the control unit 11, respectively.

  FIG. 6 is a schematic perspective view when the plug 5 is placed flat. The plug 5 has a substantially rectangular parallelepiped shape, and a notch portion 54 having a semicircular cross section is formed on the surface that contacts the left side surface of the receptacle 3 in order to prevent the right and left sides from being fitted to the receptacle 3 by mistake. It is formed in a shape that fits with the protruding portion 34. A brightness sensor 4 is provided directly below the small circular opening provided in the center of the upper surface of FIG. On the side surface facing the notch portion 54, a terminal portion 5a in which three plate-like electrodes are arranged in parallel at equal intervals is arranged so that the plug 5 is brought into contact with the receptacle 3 when the plug 5 is fitted to the receptacle 3. ing. Each plate-like electrode of the terminal portion 5 a is connected to the brightness sensor 4 inside the plug 5.

  FIG. 7 is a schematic perspective view when the plug 7 is placed flat. The plug 7 has a substantially rectangular parallelepiped shape, and a notch portion 74 having a semicircular cross section is formed on the surface contacting the left side surface of the receptacle 3 in order to prevent the right and left sides from being fitted to the receptacle 3 by mistake. It is formed in a shape that fits with the protruding portion 34. A remote control light receiving unit 6 is provided directly under the small circular opening provided in the center of the upper surface of FIG. On the surface that contacts the bottom surface of the receptacle 3, a terminal portion 7b in which three plate-like electrodes are arranged in parallel at equal intervals is arranged so that the plug 7 contacts the terminal portion 3b when the plug 7 is fitted to the receptacle 3. ing. Each plate-like electrode of the terminal portion 7 b is connected to the remote control light receiving portion 6 inside the plug 7.

  FIG. 8 is a schematic perspective view when the dummy plug 8 is laid flat for fitting into the receptacle 3 in which neither the plug 5 nor the plug 7 is fitted. The dummy plug 8 has a substantially rectangular parallelepiped shape, and a cutout portion 84 having a semicircular cross section is formed on the surface that contacts the left side surface of the receptacle 3 so as to be fitted to the protruding portion 34. At the center of the upper surface of the dummy plug 8, a knob portion 8a for facilitating attachment / detachment to / from the receptacle 3 is provided.

  As described above, in the present embodiment, the measurement position of the brightness sensor is freely selectable corresponding to the receptacle position, and the user selects the receptacle with which the plug is fitted, and the brightness is selected. When the measurement position of the sensor is appropriately adjusted, it is possible to appropriately adjust the brightness of the screen based on the ambient brightness measured without being affected by the incidence of external light and the shielding of room lighting.

Furthermore, when the brightness sensor is carried on the plug and the user selects a receptacle to which the plug is to be fitted from a plurality of receptacles, the measurement position of the brightness sensor can be easily adjusted.
In other words, the object of providing a display device that allows the user to easily adjust the measurement position of ambient brightness can be achieved.

Furthermore, the measurement position of the brightness sensor and the light receiving position of the remote control light-receiving unit can be freely selected corresponding to the receptacle position, and the user selects the receptacle to which each plug is fitted, and the brightness sensor is selected. If the measurement position is adjusted appropriately, the brightness of the screen can be adjusted appropriately based on the ambient brightness measured without being affected by the incidence of external light and the shielding of room lighting. When the light receiving position of the unit is appropriately adjusted, it is possible to avoid an obstacle to receive light and receive an operation signal from the remote control device.
That is, an object of the present invention is to provide a display device that can appropriately adjust the brightness of the screen without changing the installation location, avoid an obstacle to light reception, and receive an operation signal of the remote operation device. Can also be reached.

Furthermore, when the brightness sensor and the remote control light-receiving unit are carried on the plug, and the user selects a receptacle for fitting each plug from a plurality of receptacles, the measurement position of the brightness sensor and the light reception of the remote control light-receiving unit. The position can be easily adjusted.
That is, the object of providing a display device that allows the user to easily adjust the measurement position of ambient brightness and the light receiving position of the remote control light receiving unit can be achieved.

  In the embodiment, the example in which the plug 5 or the plug 7 is fitted as the mounting method to the receptacle 3 that is the mounting portion has been described. However, the present invention is not limited to this example. The member carrying the brightness sensor 4 or the remote control light receiving unit 6 may be sucked and mounted on the mounting unit using an object having suction force.

  Further, the terminal portion 3a and the terminal portion 3b are arranged in all the receptacles 3 so as to be in contact with the terminal portion 5a of the plug 5 and the terminal portion 7b of the plug 7, respectively. However, the present invention is not limited to this. The terminal portions 3a and the terminal portions 3b may be disposed only on the receptacles 3 every arbitrary number.

  Furthermore, the receptacle may be configured to selectively attach either the plug 5 or the plug 7. In this case, for example, a plurality of receptacles dedicated to the plug 5 and the plug 7 are separately arranged on the outer edge of the display unit 1. As a result, when the user selects a receptacle for fitting each plug from a dedicated receptacle, the measurement position of the brightness sensor and the light receiving position of the remote control light receiving unit can be easily adjusted.

  Furthermore, although the configuration is such that the brightness of the cold cathode tube of the backlight 16 is adjusted by PWM dimming, the present invention is not limited to this and may be adjusted by voltage dimming or current dimming. Furthermore, the voltage correlated with the output as the voltage value of the brightness sensor 4 may be directly used as a control input for PWM dimming, voltage dimming, or current dimming.

  Furthermore, the analog value output of the brightness sensor 4 is A / D converted, the converted digital value is given to the address input of the table ROM, and the voltage determined by the output of the table ROM is adjusted by PWM dimming and voltage adjustment. It is good also as a structure used as control input of light or electric current light control.

It is a front view which shows typically the display apparatus which concerns on embodiment of this invention. It is a block diagram which shows schematic structure of the display apparatus which concerns on embodiment. It is explanatory drawing which shows typically the influence of the external light, room light, and indoor installation with respect to the display apparatus which concerns on embodiment. It is the typical perspective view which looked at the receptacle from the front lower right side of the display part. FIG. 5 is a layout diagram illustrating a terminal arrangement when the receptacle is viewed from the front side of the display unit. It is a typical perspective view at the time of placing a plug flat. It is a typical perspective view at the time of placing a plug flat. It is a typical perspective view at the time of placing a dummy plug flat.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Display part 2 Exterior 3 Receptacle 3a, 3b, 5a, 7b Terminal part 4 Brightness sensor 5, 7 Plug 6 Remote control light-receiving part 8 Dummy plug 9 Remote control 11 Control part 12 ROM
13 RAM
15 Video processing unit 16 Backlight 21 Window 22 Sunlight 25 Indoor lighting 26, 28 Furniture 27 Shadow

Claims (5)

In a display device that has a measuring device that measures the brightness of the surroundings, and displays an image in which the luminance is increased or decreased based on the measurement result of the measuring device,
A display device comprising a plurality of mounting portions for detachably mounting the measuring instrument. The mounting portion is formed on an outer edge portion of a surface displaying the image,
The display device according to claim 1, wherein the measuring instrument is adapted to be fitted into the mounting portion. In a display device that has a measuring device that measures ambient brightness and a light receiver that receives an operation signal of a remote control device, and displays an image with increased or decreased luminance based on the measurement result of the measuring device,
A display device comprising a plurality of attachment portions for detachably attaching the measuring device or the light receiver. The mounting portion is formed on an outer edge portion of a surface displaying the image,
The display device according to claim 3, wherein the measuring device and the light receiver are respectively fitted to the mounting portion. In a display device that has a measuring device that measures ambient brightness and a light receiver that receives an operation signal of a remote control device, and displays an image with increased or decreased luminance based on the measurement result of the measuring device,
A display device comprising a plurality of mounting portions for detachably mounting the measuring device and a plurality of mounting portions for detachably mounting the light receiver.

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