JPH0327150B
PURPOSE:To make a scale small by disposing a vertical direction and a horizon tal direction in series in parallel to a correction of a contour and a flare, using an FIR filter for correcting the contour and an IIR filter for correcting the flare, variably adjusting their factors and correcting by a...
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Main Authors | , |
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Format | Patent |
Language | English |
Published |
15.04.1991
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Subjects | |
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Abstract | PURPOSE:To make a scale small by disposing a vertical direction and a horizon tal direction in series in parallel to a correction of a contour and a flare, using an FIR filter for correcting the contour and an IIR filter for correcting the flare, variably adjusting their factors and correcting by a digital means. CONSTITUTION:A digital signal is inputted to a compensating delay device 25, passes through a vertical contour correction FIR filter 21, and a horizontal contour correction FIR filter 2 from a signal line (l) to input to a subtraction circuit 26a, is subtracted from a reference signal to obtain a high frequency characteristic for correcting the contour and continuously correct four corners of a window pattern at this time. Similarly, an input from a signal line (m) passes through vertical and horizontal flare correction composite IIR filters 23, 24, is subtracted from the reference signal in a subtraction circuit 26b to obtain a correcting signal of high frequency characteristic. After passing through coring circuits 27a, 27b, synthesizing in a synthesizing circuit 28, respective factor values of various types of filters, a gain adjusting circuit, a coring circuit or the like are adjusted and set in a factor circuit 30. Thereby, a small scale circuit constitution can be realized. |
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AbstractList | PURPOSE:To make a scale small by disposing a vertical direction and a horizon tal direction in series in parallel to a correction of a contour and a flare, using an FIR filter for correcting the contour and an IIR filter for correcting the flare, variably adjusting their factors and correcting by a digital means. CONSTITUTION:A digital signal is inputted to a compensating delay device 25, passes through a vertical contour correction FIR filter 21, and a horizontal contour correction FIR filter 2 from a signal line (l) to input to a subtraction circuit 26a, is subtracted from a reference signal to obtain a high frequency characteristic for correcting the contour and continuously correct four corners of a window pattern at this time. Similarly, an input from a signal line (m) passes through vertical and horizontal flare correction composite IIR filters 23, 24, is subtracted from the reference signal in a subtraction circuit 26b to obtain a correcting signal of high frequency characteristic. After passing through coring circuits 27a, 27b, synthesizing in a synthesizing circuit 28, respective factor values of various types of filters, a gain adjusting circuit, a coring circuit or the like are adjusted and set in a factor circuit 30. Thereby, a small scale circuit constitution can be realized. |
Author | FUJIMURA RYUICHI KOBAYASHI REIICHI |
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Notes | Application Number: JP19850136969 |
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PublicationYear | 1991 |
RelatedCompanies | NIPPON DENKI HOOMU EREKUTORONIKUSU KK |
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Snippet | PURPOSE:To make a scale small by disposing a vertical direction and a horizon tal direction in series in parallel to a correction of a contour and a flare,... |
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SubjectTerms | ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY PICTORIAL COMMUNICATION, e.g. TELEVISION |
Title | JPH0327150B |
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