Image sensing apparatus and control method therefor
AssigneeCanon Kabushiki Kaisha
InventorsNobukazu Suzuki, Noriko Suwa
Life of this patent
Estimating the term…
Abstract
In an image sensing apparatus which can be connected to a host computer, receives power from the host computer, and has an image sensing element for converting an optical image of an object into an electrical image signal, the host computer having a suspend/resume function of storing, for a program under processing, a state necessary for execution of the processing in memory and re-executing the interrupted processing of the program on the basis of stored contents, when the host computer is set in a suspend state during image sensing, operation of at least a part of the image sensing apparatus is stopped, and when the host computer is resumed, a predetermined portion of the image sensing apparatus is reset to a predetermined initial state.
Claims53
An image sensing apparatus which can be connected to an external device and receives power from the external device, the external device having a suspend/resume function of storing, for a program under processing, a state necessary for execution of the processing in memory and re-executing the interrupted processing of the program on the basis of stored contents, comprising:
- image sensing means for converting an optical image of an object into an electrical image signal;
- and
- control means for, when the external device is set in a suspend state during image sensing, stopping operation of at least a part of said image sensing means and resetting a predetermined portion of said image sensing apparatus to a predetermined initial state in response to resumption of the external device.
A control method for an image sensing apparatus which can be connected to an external device, receives power from the external device, and has image sensing means for converting an optical image of an object into an electrical image signal, the external device having a suspend/resume function of storing, for a program under processing, a state necessary for execution of the processing in memory and re-executing the interrupted processing of the program on the basis of stored contents, comprising:
- the stop step of, when the external device is set in a suspend state during image sensing, stopping operation of at least a part of the image sensing means;
- and
- the reset step of resetting a predetermined portion of the image sensing apparatus to a predetermined initial state in response to resumption of the external device.
An image sensing apparatus connected to an external device having a suspend/resume function and driven upon receiving power from the external device, comprising:
- image sensing means for converting an optical image of an object into an electrical image signal;
- control means for controlling to perform predetermined operation upon detecting that the external device is set in a suspend state;
- and
- a backup battery for, when the external device is set in the suspend state, storing power necessary to perform the predetermined operation by said control means before the image sensing apparatus is set in the suspend state.
An image sensing apparatus connectable to an external device having a suspend/resume function, comprising:
- operation means;
- and
- control means for resuming the external device in accordance with predetermined operation by said operation means.
An image sensing apparatus connectable to an external device having a suspend/resume function, comprising:
- state detection means;
- and
- control means for resuming the external device in accordance with detection of a predetermined state by said state detection means.
An image sensing apparatus connected to an external device having a suspend/resume function and driven upon receiving power from the external device, comprising control means for, when the external device is set in a suspend state, stopping said image sensing apparatus, and when the external device is resumed, controlling to perform predetermined operation upon receiving power from the external device.
A control method for an image sensing apparatus connected to an external device having a suspend/resume function, driven upon receiving power from the external device, and having image sensing means for converting an optical image of an object into an electrical image signal, comprising the steps of:
- controlling to perform predetermined operation upon detecting that the external device is set in a suspend state;
- and
- storing, when the external device is set in the suspend state, power necessary to perform the predetermined operation in the control step before the image sensing apparatus is set in the suspend state.
A control method an image sensing apparatus which can be connected to an external device having a suspend/resume function and has operation means, comprising the step of resuming the external device in accordance with predetermined operation by the operation means.
A control method for an image sensing apparatus which can be connected to an external device having a suspend/resume function and has state detection means, comprising the step of resuming the external device in accordance with detection of a predetermined state by the state detection means.
A control method for an image sensing apparatus connected to an external device having a suspend/resume function and driven upon receiving power from the external device, comprising the steps of:
- stopping the image sensing apparatus when the external device is set in a suspend state;
- and
- performing predetermined operation upon receiving power from the external device in response to resumption of the external device.
A computer program product comprising a computer usable medium having computer readable program code means embodied in said medium for controlling an image sensing apparatus which can be connected to an external device, receives power from the external device, and has image sensing means for converting an optical image of an object into an electrical image signal, the external device having a suspend/resume function of storing, for a program under processing, a state necessary for execution of the processing in memory and re-executing the interrupted processing of the program on the basis of stored contents, said product including:
- first computer readable program code means for, when the external device is set in a suspend state during image sensing, stopping operation of at least a part of the image sensing means;
- and
- second computer readable program code means for resetting a predetermined portion of the image sensing apparatus to a predetermined initial state in response to resumption of the external device.
A computer program product comprising a computer usable medium having computer readable program code means embodied in said medium for controlling an image sensing apparatus connected to an external device having a suspend/resume function, driven upon receiving power from the external device, and having image sensing means for converting an optical image of an object into an electrical image signal, said product including:
- first computer readable program code means for controlling to perform predetermined operation upon detecting that the external device is set in a suspend state;
- and
- second computer readable program code means for storing, when the external device is set in the suspend state, power necessary to perform the predetermined operation by said first computer readable code means before the image sensing apparatus is set in the suspend state.
A computer program product comprising a computer usable medium having computer readable program code means embodied in said medium for controlling an image sensing apparatus which can be connected to an external device having a suspend/resume function and has operation means, said product including:
- computer readable program code means for resuming the external device in accordance with predetermined operation by the operation means.
A computer program product comprising a computer usable medium having computer readable program code means embodied in said medium for controlling an image sensing apparatus which can be connected to an external device having a suspend/resume function and has state detection means, said product including:
- computer readable program code means for resuming the external device in accordance with detection of a predetermined state by the state detection means.
A computer program product comprising a computer usable medium having computer readable program code means embodied in said medium for controlling an image sensing apparatus connected to an external device having a suspend/resume function and driven upon receiving power from the external device, said product including:
- first computer readable program code means for stopping the image sensing apparatus when the external device is set in a suspend state;
- and
- second computer readable program code means for performing predetermined operation upon receiving power from the external device in response to resumption of the external device.
Dependencies are inferred from the claim text.