초록 ▼

An apparatus has an image sensing device, and a signal processing device for performing a first image sensing operation for making the image sensing device perform an image sensing operation in an exposure state to obtain a sensed image signal, and a second image sensing operation for making the ima

An apparatus has an image sensing device, and a signal processing device for performing a first image sensing operation for making the image sensing device perform an image sensing operation in an exposure state to obtain a sensed image signal, and a second image sensing operation for making the image sensing device perform an image sensing operation in a non-exposure state to obtain a sensed image signal, and processing the sensed image signal obtained by the first image sensing operation by the sensed image signal obtained by the second image sensing operation. The signal processing device determines in accordance with the image sensing time of the first image sensing operation whether or not the second image sensing operation is performed.

대표청구항 ▼

What is claimed is: 1. An apparatus comprising: (A) an image sensing device; and (B) a signal processing device which performs a first image sensing operation for making said image sensing device perform an image sensing operation in an exposure state to obtain a sensed image signal, and a second i

What is claimed is: 1. An apparatus comprising: (A) an image sensing device; and (B) a signal processing device which performs a first image sensing operation for making said image sensing device perform an image sensing operation in an exposure state to obtain a sensed image signal, and a second image sensing operation for making said image sensing device perform an image sensing operation in a non-exposure state to obtain a sensed image signal, and processing the sensed image signal obtained by the first image sensing operation by the sensed image signal obtained by the second image sensing operation, wherein said signal processing device performs the second image sensing operation if it is determined that a charge accumulation time of the first image sensing operation is longer than a predetermined charge accumulation time and does not perform the second image sensing operation if it is not determined that the charge accumulation time of the first image sensing operation is longer than the predetermined charge accumulation time. 2. An apparatus comprising: (A) an image sensing device; and (B) a signal processing device which performs a first image sensing operation for making said image sensing device perform an image sensing operation in an exposure state to obtain a sensed image signal, and a second image sensing operation for making said image sensing device perform an image sensing operation in a non-exposure state to obtain a sensed image signal, and processing the sensed image signal obtained by the first image sensing operation by the sensed image signal obtained by the second image sensing operation, wherein said signal processing device does not perform the second image sensing operation if it is determined that a charge accumulation time of the first image sensing operation is shorter than a predetermined charge accumulation time and perform the second image sensing operation if it is not determined that the charge accumulation time of the first image sensing operation is shorter than the predetermined charge accumulation time. 3. An apparatus comprising: (A) an image sensing device; and (B) a signal processing device which performs a first image sensing operation for making said image sensing device perform an image sensing operation in an exposure state to obtain a sensed image signal, and a second image sensing operation for making said image sensing device perform an image sensing operation in a non-exposure state to obtain a sensed image signal, and processing the sensed image signal obtained by the first image sensing operation by the sensed image signal obtained by the second image sensing operation, wherein said signal processing device performs the second image sensing operation if it is determined that a charge accumulation time of the first image sensing operation is longer than a predetermined charge accumulation time and does not perform the second image sensing operation if it is determined that the charge accumulation time of the first image sensing operation is shorter than the predetermined charge accumulation time. 4. An apparatus comprising: (A) an image sensing device; (B) an operating device which is operable by an operator and sets the apparatus to a first operation state or a second operation state different from the first operation; and (C) a signal processing device which performs a first image sensing operation for making said image sensing device perform an image sensing operation in an exposure state to obtain a sensed image signal, and a second image sensing operation for making said image sensing device perform an image sensing operation in a non-exposure state to obtain a sensed image signal, and processing the sensed image signal obtained by the first image sensing operation by the sensed image signal obtained by the second image sensing operation, wherein when the first operation state is set, said signal processing device performs the second image sensing operation if it is determined that a charge accumulation time of the first image sensing operation is longer than a first charge accumulation time and does not perform the second image sensing operation if it is not determined that the charge accumulation time of the first image sensing operation is longer than the first charge accumulation time, and when the second operation state is set, said signal processing device performs the second image sensing operation if it is determined that a charge accumulation time of the first image sensing operation is longer than a second charge accumulation time and does not perform the second image sensing operation if it is not determined that the charge accumulation time of the first image sensing operation is longer than the second charge accumulation time, the first charge accumulation time being different from the second charge accumulation time. 5. An apparatus comprising: (A) an image sensing device; (B) an operating device which is operable by an operator and sets the apparatus to a first operation state or a second operation state different from the first operation; and (C) a signal processing device which performs a first image sensing operation for making said image sensing device perform an image sensing operation in an exposure state to obtain a sensed image signal, and a second image sensing operation for making said image sensing device perform an image sensing operation in a non-exposure state to obtain a sensed image signal, and processing the sensed image signal obtained by the first image sensing operation by the sensed image signal obtained by the second image sensing operation, wherein when the first operation state is set, said signal processing device does not perform the second image sensing operation if it is determined that a charge accumulation time of the first image sensing operation is shorter than a first charge accumulation time and perform the second image sensing operation if it is not determined that the charge accumulation time of the first image sensing operation is shorter than the first charge accumulation time, and when the second operation state is set, said signal processing device does not perform the second image sensing operation if it is determined that a charge accumulation time of the first image sensing operation is shorter than a second charge accumulation time and perform the second image sensing operation if it is not determined that the charge accumulation time of the first image sensing operation is shorter than the second charge accumulation time, the first charge accumulation time being different from the second charge accumulation time. 6. An apparatus comprising: (A) an image sensing device; (B) an operating device which is operable by an operator and sets the apparatus to a first operation state or a second operation state different from the first operation; and (C) a signal processing device which performs a first image sensing operation for making said image sensing device perform an image sensing operation in an exposure state to obtain a sensed image signal, and a second image sensing operation for making said image sensing device perform an image sensing operation in a non-exposure state to obtain a sensed image signal, and processing the sensed image signal obtained by the first image sensing operation by the sensed image signal obtained by the second image sensing operation, wherein when the first operation state is set, said signal processing device performs the second image sensing operation if it is determined that a charge accumulation time of the first image sensing operation is longer than a first charge accumulation time and does not perform the second image sensing operation if it is determined that the charge accumulation time of the first image sensing operation is shorter than the first charge accumulation time and, when the second operation state is set, said signal processing device performs the second image sensing operation if it is determined that a charge accumulation time of the first image sensing operation is longer than a second charge accumulation time and does not perform the second image sensing operation if it is determined that the charge accumulation time of the first image sensing operation is shorter than the second charge accumulation time, the first charge accumulation time being different from the second charge accumulation time.