Illumination display device with illumination region control, electronic apparatus and control method therefor

• US 10,134,319 B2
• Filed: 08/24/2012
• Issued: 11/20/2018
• Est. Priority Date: 08/24/2012
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Kazami, Satoru
• Primary Examiner(s): Faulk, Devona
• Assistant Examiner(s): Wu, Ming
• Application Number:
  US14/420,785
• Publication Number:
  US 20150206469A1
• Time in Patent Office: 2,279 Days
• CPC Class Codes: G06F 1/3215 Monitoring of peripheral devices
• CPC Class Codes: G06F 1/3265 Power saving in display device
• CPC Class Codes: G06F 2203/04104 Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0416 Control or interface arrangements specially adapted for digitisers
• CPC Class Codes: G06F 3/0488 using a touch-screen or digitiser, e.g. input of commands through traced gestures
• CPC Class Codes: G09G 2320/0606 Manual adjustment
• CPC Class Codes: G09G 2320/0666 for control of colour parameters, e.g. colour temperature
• CPC Class Codes: G09G 2330/021 Power management, e.g. power saving
• CPC Class Codes: G09G 2354/00 Aspects of interface with display user
• CPC Class Codes: G09G 3/2003 Display of colours specific for liquid crystal displays G09G3/3607
• CPC Class Codes: G09G 3/3406 Control of illumination source illumination devices structurally associated with liquid crystal cells G02F1/1336
• CPC Class Codes: G09G 5/10 Intensity circuits
• CPC Class Codes: G09G 5/14 Display of multiple viewports
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

Provided is a display device capable of illuminating a region desired by a user with a simple operation. A display device according to one exemplary embodiment of the invention includes a display means, a touch panel that is disposed on the display means and outputs coordinate information of a contact point, and a control means that sets a region around a contact point as an illumination region when contact with the touch panel is made at one point and sets a region interposed between a first contact point and a second contact point as the illumination region when contact with the touch panel is made at two points based on the coordinate information of the contact point.

Claims

1. A display device comprising:

a display unit displaying text information;

a touch panel that is disposed on the display unit, and outputs coordinate information of a contact point;

a memory storing a software program and a processor configured to execute the software program and thereby implement a control unit that is configured to;

set a region around a contact point based on coordinate information of the contact point, as an illumination region when contact with the touch panel is made at one point;

determine, when contact with the touch panel is made at two points, whether coordinate information of a second contact point where the second contact with the touch panel is made is input within a specified period of time after coordinate information of the first contact point where the first contact with the touch panel is made is input,

set, when the coordinate information of the second contact point is input within the specified period of time, a rectangle-shaped region that has the first contact point and the second contact point at its opposing corners, an oval-shaped region that has the first contact point and the second contact point at both ends of its long axis, a strip-shaped region that lies vertically in the display unit and has the first contact point and the second contact point on its left and right vertical sides, or a strip-shaped region that lies horizontally in the display unit and has the first contact point and the second contact point on its upper and lower horizontal sides as an illumination region based on the coordinate information of the first contact point and the second contact point,

set, when the coordinate information of the second contact point is not input within the specified period of time, the region around the first contact point as the illumination region based on the coordinate information of the first contact point,

determine whether a third contact point is within the illumination region set based on the coordinate information of the first contact point and the coordinate information of the second contact point,

move the text information located in the illumination region set based on the coordinate information of the first contact point and the coordinate information of the second contact point from the third contact point in a contact operation direction based on the coordinate information of the first contact point, the second contact point, and the third contact point when the third contact point is within the illumination region set based on the coordinate information of the first contact point and the coordinate information of the second contact point, and

increase, when the third contact point is moved upward, a brightness within the illumination region set based on the coordinate information of the first contact point and the coordinate information of the second contact point and decrease, when the third contact point is moved downward, brightness within the illumination region set based on the coordinate information of the first contact point and the coordinate information of the second contact point when the third contact point is outside the illumination region set based on the coordinate information of the first contact point and the coordinate information of the second contact point.

2. An electronic apparatus comprising the display device according to claim 1.

3. An illumination range control method of a display device, the method comprising:

setting a region around a contact point based on coordinate information of the contact point, as an illumination region when contact with the touch panel is made at one point;

determining, when contact with the touch panel is made at two contact points, a first contact point and a second contact point, whether coordinate information of a second contact point where the second contact with the touch panel is made is input within a specified period of time after coordinate information of the first contact point where the first contact with the touch panel is made is input,

setting, when the coordinate information of the second contact point is input within the specified period of time, a rectangle-shaped region that has the first contact point and the second contact point at its opposing corners, an oval-shaped region that has the first contact point and the second contact point at both ends of its long axis, a strip-shaped region that lies vertically in the display unit and has the first contact point and the second contact point on its left and right vertical sides, or a strip-shaped region that lies horizontally in the display unit and has the first contact point and the second contact point on its upper and lower horizontal sides as the illumination region based on the coordinate information of the first contact point and the second contact point,

setting, when the coordinate information of the second contact point is not input within the specified period of time, the region around the first contact point as the illumination region based on the coordinate information of the first contact point,

determining, when contact with the touch panel is made at three points, a first contact point, a second contact point and a third contact point, whether the third contact point is within the illumination region set based on the coordinate information of the first contact point and the coordinate information of the second contact point, based on the coordinate information of the first contact point, the second contact point, and the third contact point,

moving text information located in the illumination region set based on the coordinate information of the first contact point and the coordinate information of the second contact point from the third contact point in a contact operation direction when the third contact point is within the illumination region set based on the coordinate information of the first contact point and the coordinate information of the second contact point, and

increasing, when the third contact point is moved upward, a brightness within the illumination region set based on the coordinate information of the first contact point and the coordinate information of the second contact point and decreasing, when the third contact point is moved downward, brightness within the illumination region set based on the coordinate information of the first contact point and the coordinate information of the second contact point when the third contact point is outside the illumination region set based on the coordinate information of the first contact point and the coordinate information of the second contact point.