IMAGE PICKUP APPARATUS, CONTROL METHOD THEREFOR, AND PROGRAM FOR IMPLEMENENTING THE METHOD
First Claim
1. An image pickup apparatus comprising:
- a camera unit;
a panhead unit that supports said camera unit and rotates said camera unit;
a detector unit that detects a rotating state of said panhead unit;
a rotation control unit that controls the rotating state of said panhead unit based on the rotating state detected by said detector unit;
a first image storing unit that stores an image periodically picked up by said camera unit in the controlled rotating state of said panhead unit; and
a second image storing unit that is operable when the rotating state of said panhead unit is not being controlled based on the rotating state detected by said detector unit, to read out an image picked up at at least one of times before and after a detection time at which said detector unit detected the rotating state, from said first image storing unit, and store the image.
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Accused Products
Abstract
An image pickup apparatus which is capable of identifying a criminal e.g. when the image pickup apparatus has been broken, without additionally providing a dedicated sensor for detecting an abnormality. A panhead unit supports a camera unit and rotates the same. A rotary encoder detects a rotating state of the panhead unit. A motor control circuit controls the rotating state of the panhead unit based on the rotating state detected by the rotary encoder. A system control circuit stores an image periodically picked up by the camera unit in the controlled rotating state of the panhead unit in a buffer memory. When the rotating state of the panhead unit is not being controlled based on the rotating state detected by the rotary encoder, a memory control circuit reads out images picked up, respectively, before and after a detection time at which the rotary encoder detected the rotating state, and stores the images in an auxiliary memory.
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Citations
7 Claims
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1. An image pickup apparatus comprising:
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a camera unit;
a panhead unit that supports said camera unit and rotates said camera unit;
a detector unit that detects a rotating state of said panhead unit;
a rotation control unit that controls the rotating state of said panhead unit based on the rotating state detected by said detector unit;
a first image storing unit that stores an image periodically picked up by said camera unit in the controlled rotating state of said panhead unit; and
a second image storing unit that is operable when the rotating state of said panhead unit is not being controlled based on the rotating state detected by said detector unit, to read out an image picked up at at least one of times before and after a detection time at which said detector unit detected the rotating state, from said first image storing unit, and store the image. - View Dependent Claims (2, 3, 4, 5)
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6. A control method for an image pickup apparatus having a camera unit, a panhead unit that supports the camera unit and rotates the camera unit, a detector unit that detects a rotating state of the panhead unit, and a rotation control unit that controls the rotating state of the panhead unit based on the rotating state detected by the detector unit, the control method comprising:
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a first image storing step of storing an image periodically picked up by the camera unit in the controlled rotating state of the panhead unit in a first memory; and
a second image storing step of reading out an image picked up at at least one of times before and after a detection time at which the detector unit detected the rotating state, from the first memory, and storing the image in a second memory, when the rotating state of the panhead unit is not being controlled based on the rotating state detected by the detector unit.
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7. A program for causing a computer to execute a control method for an image pickup apparatus having a camera unit, a panhead unit that supports the camera unit and rotates the camera unit, a detector unit that detects a rotating state of the panhead unit, and a rotation control unit that controls the rotating state of the panhead unit based on the rotating state detected by the detector unit, the program comprising:
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a first image storing module for storing an image periodically picked up by the camera unit in the controlled rotating state of the panhead unit in a first memory; and
a second image storing module for reading out an image picked up at at least one of times before and after a detection time at which the detector unit detected the rotating state, from the first memory, and storing the image in a second memory, when the rotating state of the panhead unit is not being controlled based on the rotating state detected by the detector unit.
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Specification