Portable electronic apparatus and power source control method therefor
First Claim
1. A portable electronic apparatus comprising:
- a direction sensing unit which senses a vertical or horizontal direction which is along a direction of rotation about a predetermined axis of an apparatus body; and
a control unit which switches on a power source in response to that a direction of said apparatus body sensed by said direction sensing unit changes.
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Abstract
A digital camera is provided with a direction sensor which senses a vertical or horizontal direction along a direction of rotation about a predetermined axis of the camera body. When the direction sensor senses that the camera body is changed from a vertically laid state to a horizontally laid state or from a horizontally laid state to a vertical laid state in a power source off state with a predetermined operation mode being set, a control unit switches on the power source. If no operation is made during a short time period after the power source is switched on, the control unit switches off the power source. A user can quickly perform image capturing at a desired timing without having to perform the power source switching on operation, when taking out the digital camera from where it has been put such as a pocket of the clothes.
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Citations
20 Claims
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1. A portable electronic apparatus comprising:
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a direction sensing unit which senses a vertical or horizontal direction which is along a direction of rotation about a predetermined axis of an apparatus body; and
a control unit which switches on a power source in response to that a direction of said apparatus body sensed by said direction sensing unit changes.
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2. A portable electronic apparatus comprising:
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a brightness sensing unit which senses brightness of a vicinity of an apparatus body; and
a control unit which switches on a power source in response to that the brightness sensed by said brightness sensing unit increases by equal to or greater than a predetermined degree during a predetermined time period. - View Dependent Claims (3)
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4. A method of controlling a power source of a portable electronic apparatus, said method comprising
switching on a power source when brightness of a vicinity of an apparatus body increases by equal to or greater than a predetermined degree during a predetermined time period.
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5. A portable electronic apparatus comprising:
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a first and second sensing units which sense different information from each other; and
a control unit which switches on a power source in response to that sensing results showing predetermined changes in an environment are obtained from both of said first and second sensing units. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of controlling a power source of a portable electronic apparatus, said method comprising
switching on a power source when a control unit determines that a predetermined change in an environment occurs to an apparatus, based on information from first and second sensing units which are different from each other.
Specification