Apparatus and method for processing image, and an image processing program
First Claim
1. An image processing apparatus, which controls a display screen to display a first image corresponding to a first image signal and a second image corresponding to a second image signal, said apparatus comprising:
- a monitoring device for monitoring temporal relationship between a first synchronizing signal of a change-image signal, which is obtained by changing a frequency of said first synchronizing signal of said first image signal, and a second synchronizing signal of said second image signal; and
a synchronizing control device for performing frequency regulation for said change-image signal based on monitoring results from said monitoring device so as to prevent one of said change-image signal and said second image signal from passing an other thereof on said display screen.
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Abstract
An image processing apparatus, which displays an image corresponding to a synchronizing frequency change-image signal, which is obtained by changing a frequency of a synchronizing signal of an image signal, and an other image corresponding to an other image signal on a same display screen. The apparatus comprises a monitoring device and a synchronizing control device. The monitoring device monitors temporal relationship between the synchronizing signal of the synchronizing frequency change-image signal and a synchronizing signal of the other image signal. The synchronizing control device performs frequency regulation for the synchronizing frequency change-image signal based on the monitoring results from the monitoring device so as to prevent one of the synchronizing frequency change-image signal and the other image signal from passing the other thereof on the display screen.
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Citations
7 Claims
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1. An image processing apparatus, which controls a display screen to display a first image corresponding to a first image signal and a second image corresponding to a second image signal, said apparatus comprising:
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a monitoring device for monitoring temporal relationship between a first synchronizing signal of a change-image signal, which is obtained by changing a frequency of said first synchronizing signal of said first image signal, and a second synchronizing signal of said second image signal; and
a synchronizing control device for performing frequency regulation for said change-image signal based on monitoring results from said monitoring device so as to prevent one of said change-image signal and said second image signal from passing an other thereof on said display screen. - View Dependent Claims (2, 3, 4, 5)
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6. An image processing method, which displays an image corresponding to a synchronizing frequency change-image signal, which is obtained by changing a frequency of a synchronizing signal of an image signal, and an other image corresponding to an other image signal on a same display screen, said method comprising:
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a monitoring step for monitoring temporal relationship between the synchronizing signal of said synchronizing frequency change-image signal and a synchronizing signal of said other image signal; and
a synchronizing control step for performing frequency regulation for said synchronizing frequency change-image signal based on monitoring results from said monitoring device so as to prevent one of said synchronizing frequency change-image signal and said other image signal from passing an other thereof on said display screen.
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7. An image processing program, which causes a computer included in an image processing apparatus, which displays an image corresponding to a synchronizing frequency change-image signal, which is obtained by changing a frequency of a synchronizing signal of an image signal, and an other image corresponding to an other image signal on a same display screen, to function as:
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a monitoring device for monitoring temporal relationship between the synchronizing signal of said synchronizing frequency change-image signal and a synchronizing signal of said other image signal; and
a synchronizing control device for performing frequency regulation for said synchronizing frequency change-image signal based on monitoring results from said monitoring device so as to prevent one of said synchronizing frequency change-image signal and said other image signal from passing an other thereof on said display screen.
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Specification