INFORMATION INPUT DEVICE, INFORMATION INPUT METHOD, INFORMATION INPUT/OUTPUT DEVICE, INFORMATION PROGRAM AND ELECTRONIC DEVICE

• US 20110090161A1
• Filed: 10/06/2010
• Published: 04/21/2011
• Est. Priority Date: 10/16/2009
• Status: Abandoned Application

• Current Assignee: Japan Display West Incorporated (Japan Display Incorporated)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Tsuzaki, Ryoichi, Yamaguchi, Kazunori
• Application Number:
  US12/899,008
• Publication Number:
  US 20110090161A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 1/3203 Power management, i.e. event-based initiation of a power-saving mode
• CPC Class Codes: G06F 1/3262 Power saving in digitizer or tablet
• CPC Class Codes: G06F 3/0416 Control or interface arrangements specially adapted for digitisers
• CPC Class Codes: G06F 3/042 by opto-electronic means
• CPC Class Codes: Y02D 30/50 in wire-line communication networks, e.g. low power modes or reduced link rate

Abstract

An information input device includes an input panel including detection elements each obtaining a detection signal from an object, an image processing section performing predetermined image processing on the detection signal obtained by the input panel, thereby obtaining touch point information which is indicative of whether the object is in a touch state and proximity point information which is indicative of whether the object is in a proximity state. The information input device further includes a drive section driving each of the detection elements in the input panel in such a manner that the detection signal is obtained from each of the detection elements at predetermined drive intervals, and a control section determining the drive interval based on the touch point information and the proximity point information obtained by the image processing section.

Claims

1. An information input device comprising:

an input panel including detection elements each obtaining a detection signal from an object;

an image processing section performing predetermined image processing on the detection signal obtained by the input panel, thereby obtaining touch point information which is indicative of whether the object is in a touch state and proximity point information which is indicative of whether the object is in a proximity state;

a drive section driving each of the detection elements in the input panel in such a manner that the detection signal is obtained from each of the detection elements at predetermined drive intervals; and

a control section determining the drive interval based on the touch point information and the proximity point information obtained by the image processing section.

2. The information input device according to claim 1, wherein

the image processing section detects the touch point information through a comparison process on the detection signal with use of a first threshold value, and obtains the proximity point information through a comparison process on the detection signal with use of a second threshold value which is lower than the first threshold value.

3. The information input device according to claim 2, wherein

the control section employs a first drive interval as the drive interval when in a detection standby mode where the object is neither in the touch state nor in the proximity state, a second drive interval as the drive interval when in a proximity point detection mode where the object is in the proximity state, and a third drive interval as the drive interval when in a touch point detection mode where the object is in the touch state, the second drive interval being equal to or longer than the first drive interval, the third drive interval being equal to or longer than the second drive interval.

4. The information input device according to claim 3, wherein

the control section stays in the detection standby mode through maintaining the first drive interval, when the control section determines that the object is neither in the touch state nor in the proximity state,

the control section transitions from the detection standby mode to the proximity point detection mode through switching from the first drive interval to the second drive interval, when the control section determines that the object is in the proximity state, and

the control section transitions from the detection standby mode to the touch point detection mode through switching from the first drive interval to the third drive interval, when the control section determines that the object is in the touch state,

5. The information input device according to claim 3, wherein

the control section stays in the proximity point detection mode through maintaining the second drive interval, when the control section determines that the object is in the proximity state,

the control section transitions from the proximity point detection mode to the touch point detection mode through switching from the second drive interval to the third drive interval, when the control section determines that the object is in the contact state, and

the control section transitions from the proximity point detection mode to the detection standby mode through switching from the second drive interval to the first drive interval, when the control section determines that the object is neither in the touch state nor the proximity state.

6. The information input device according to claim 5, wherein

a timing of switching from the second drive interval to the first drive interval is delayed, in the transition from the proximity point detection mode to the detection standby mode.

7. The information input device according to claim 3, wherein

the control section stays in the contact point detection mode through maintaining the third drive interval, when the control section determines that the object is in the contact state,

the control section transitions from the contact point detection mode to the proximity point detection mode through switching from the third drive interval to the second drive interval, when the control section determines that the object is in the proximity state, and

the control section transitions from the touch point detection mode to the detection standby mode through switching from the third drive interval to the first drive interval, when the control section determines that the object is neither in the touch state nor in the proximity state.

8. The information input device according to claim 7, wherein

a timing of switching from the third drive interval to the first drive interval is delayed, in the transition from the touch point detection mode to the detection standby mode, and

a timing of switching from the third drive interval to the second drive interval is delayed, in the transition from the touch point detection mode to the proximity point detection mode.

9. The information input device according to claim 1, wherein

the detection elements are configured of a plurality of photodetectors which detect light reflected by an object.

10. An information input method comprising steps of:

obtaining a detection signal from an object by an input panel including detection elements;

performing predetermined image processing on the obtained detection signal, thereby obtaining touch point information which is indicative of whether the object is in a touch state and proximity point information which is indicative of whether the object is in a proximity state;

driving each of the detection elements in the input panel in such a manner that the detection signal is obtained from each of the detection elements at predetermined drive intervals; and

determining the drive interval based on the touch point information and the proximity point information.

11. An information input/output device comprising:

an input/output panel including detection elements each obtaining a detection signal from an object and having an image display function;

an image processing section performing predetermined image processing on the detection signal obtained by the input/output panel, thereby obtaining touch point information which is indicative of whether the object is in a touch state and proximity point information which is indicative of whether the object is in a proximity state;

a drive section driving each of the detection elements in the input/output panel in such a manner that the detection signal is obtained from each of the detection elements at predetermined drive intervals; and

a control section determining the drive interval based on the touch point information and the proximity point information obtained by the image processing section.

12. The information input/output device according to claim 11, wherein

the input/output panel includes a plurality of display elements displaying an image based on image data, and

the detection elements are configured of a plurality of photodetectors which detect light reflected by an object.

13. A computer readable non-transitory medium on which an information input program is recorded, the information input program allowing a computer to execute steps of:

obtaining a detection signal from an object by an input panel including detection elements;

performing predetermined image processing on the obtained detection signal, thereby obtaining touch point information which is indicative of whether the object is in a touch state and proximity point information which is indicative of whether the object is in a proximity state;

driving each of the detection elements in the input panel in such a manner that the detection signal is obtained from each of the detection elements at predetermined drive intervals; and

determining the drive interval based on the touch point information and the proximity point information.

14. An electronic unit having an information input device, the information input device comprising:

an input panel including detection elements each obtaining a detection signal from an object;

an image processing section performing predetermined image processing on the detection signal obtained by the input panel, thereby obtaining touch point information which is indicative of whether the object is in a touch state and proximity point information which is indicative of whether the object is in a proximity state;

a drive section driving each of the detection elements in the input panel in such a manner that the detection signal is obtained from each of the detection elements at predetermined drive intervals; and

a control section determining the drive interval based on the touch point information and the proximity point information obtained by the image processing section.