Electronic apparatus

• US 8,583,194 B2
• Filed: 09/14/2007
• Issued: 11/12/2013
• Est. Priority Date: 09/15/2006
• Status: Expired due to Fees

• Current Assignee: Kyocera Corporation
• Original Assignee: Kyocera Corporation
• Inventors: Iio, Taro, Suekane, Takuya
• Primary Examiner(s): Nguyen, Hai V
• Application Number:
  US12/441,332
• Publication Number:
  US 20100069129A1
• Time in Patent Office: 2,251 Days
• Field of Search: 455/575.3
• US Class Current: 455/575.3
• CPC Class Codes: G06F 3/03547 Touch pads, in which fingers can move on a surface
• CPC Class Codes: G06F 3/038 Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
• CPC Class Codes: G06F 3/0418 for error correction or compensation, e.g. based on parallax, calibration or alignment

Abstract

A touch sensor becomes an operation enable state in which an operation state can be detected, when predetermined voltage is applied. A touch sensor control unit switches the touch sensor to an operation detection enable state by raising the voltage to a predetermined voltage level gradually and performing predetermined calibration when detecting an activation permission request of the touch sensor in a no-voltage applied state of the touch sensor, and switches the touch sensor to an operation detection disable state in which an operation state of the touch sensor cannot be detected by lowering voltage gradually to the no-voltage applied state. And, when detecting the activation permission request of the touch sensor during switching to the operation detection disable state, the touch sensor control unit switches the touch sensor to the operation detection enable state, after the switching operation to the operation detection disable state is completed.

Claims

1. An electronic apparatus comprising:

an operation unit;

an operation detection unit detecting an operation to the operation unit and switchable between an operation enable state (ON state) and an operation disable state (OFF state);

a calibration unit for performing calibration on the operation detection unit; and

a control unit for setting the operation detection unit to the operation enable state and controlling the calibration unit to perform calibration on the operation detection unit according to a first request,

wherein the operation detection unit can correctly detect an operation to the operation unit when the setting to the operation enable state by the control unit and the calibration by the calibration unit are performed according to the first request in the operation disable state, and

the control unit suppresses the setting to the operation enable state of the operation detection unit and the calibration by the calibration unit according to the first request performed during setting the operation detection unit to the operation disable state from the operation enable state.

2. The electronic apparatus according to claim 1, wherein the control unit sets the operation detection unit to the operation enable state and controls the calibration unit to perform calibration according to the first request performed during setting the operation detection unit to the operation disable state from the operation enable state, after the operation detection unit is set to the operation disable sate.

4. The electronic apparatus according to claim 1,

further comprising a storage unit for storing that the first request or a second request is performed during setting the operation detection unit to the operation disable state from the operation enable state,

wherein the control unit sets the operation detection unit to the operation disable state according to the second request, sets the operation detection unit to the operation enable state and controls the calibration unit to perform calibration according to the first request when a request lastly stored in the storage unit during setting the operation detection unit to the operation disable state from the operation enable state is the first request, and sets the operation detection unit to the operation disable state when the request lastly stored in the storage unit during the setting is the second request.

5. The electronic apparatus according to claim 4, further comprising:

a first housing;

a second housing;

a connection unit for connecting the first housing and the second housing in an openable and closable manner; and

an open/closed detection unit for detecting an open/closed state of the first housing and the second housing through the connection unit,

wherein the control unit recognizes a detection result of either one of open and closed states of the first housing and the second housing detected by the open/dosed detection unit as the first request, and recognizes a detection result of the other state as the second request.

6. The electronic apparatus according to claim 1 or claim 3, further comprising:

a first housing;

a second housing;

a connection unit for connecting the first housing and the second housing in an openable and closable manner; and

an open/closed detection unit for detecting an open/closed state of the first housing and the second housing through the connection unit,

wherein the control unit recognizes a detection result of the open/closed state of the first housing and the second housing detected by the open/closed detection unit as the first request, and then sets the operation detection unit to the operation enable state and controls the calibration unit to perform calibration on the operation detection unit.

3. An electronic apparatus comprising:

an operation unit;

an operation detection unit detecting an operation to the operation unit and switchable between an operation enable state (ON state) and an operation disable state (OFF state);

a calibration unit for performing calibration on the operation detection unit; and

a control unit for setting the operation detection unit to the operation enable state and controlling the calibration unit to perform calibration on the operation detection unit according to a first request,

wherein the operation detection unit can correctly detect an operation to the operation unit when the setting to the operation enable state by the control unit and the calibration by the calibration unit are performed according to the first request in the operation disable state, and

the control unit suppresses the setting to the operation enable state of the operation detection unit and the calibration by the calibration unit according to the first request performed during setting the operation detection unit to the operation enable state from the operation disable state.

7. The electronic apparatus according to claim 3, wherein the control unit switches the operation detection unit to the operation disable state when there is a second request during setting the operation detection unit to the operation enable state from the operation disable state.

8. A control method for an electronic apparatus having an operation detection unit detecting an operation to an operation unit and switchable between an operation enable state (ON state) and an operation disable state (OFF state), and detecting an operation to the operation unit correctly when a setting to the operation enable state and a calibration are performed according to a first request performed in the operation disable state, the control method comprising:

suppressing the setting to the operation enable state of the operation detection unit and the calibration according to the first request performed during the operation detection unit is being switched between the operation enable state and the operation disable state.