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11. 发明专利

JPH11341444A TELEVISION RECEIVER 失效
公开(公告)号：JPH11341444A
公开(公告)日：1999-12-10
申请号：JP14897998
申请日：1998-05-29
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OKUMURA NAOJI , TERAI KATSUMI , NIO HIROSHI
IPC分类号： H04N7/01
摘要： PROBLEM TO BE SOLVED: To allow the television receiver to detect a telecine video signal even when the signal includes much noise and to prevent a conventional signal not being a telecine video signal from being mis-detected as the telecine video signal by detecting an amount of noise in an input video signal and controlling a comparison level for film mode detection in response to the noise amount. SOLUTION: A film mode detection circuit detects whether or not an input signal is a telecine video signal and provides outputs of a still signal e1 and a correction signal f1. A subtractor circuit 2002 subtracts a signal f2 delayed by one frame at a frame memory 2001 and the input signal a1 in the unit of pixels, an integration circuit 2003 integrates the frame difference information within a field, and a comparator circuit 2005 applies binary processing to an output of the integration circuit 2003. A comparison level generating circuit 2004 generates comparison level i2 for the binary processing. The comparison level generating circuit 2004 receives a noise level c1 included in the input signal a1 and a setting level e2 and provides a high level output as the comparison level i2.

12. 发明专利

JPH1169313A SEQUENTIAL SCAN CONVERSION CIRCUIT 失效
公开(公告)号：JPH1169313A
公开(公告)日：1999-03-09
申请号：JP22922897
申请日：1997-08-26
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OKUMURA NAOJI , TERAI KATSUMI , NIO HIROSHI , TANAKA KAZUTO
IPC分类号： H04N7/01
摘要： PROBLEM TO BE SOLVED: To secure the same effect of vertical outline correction between the static and moving images by reducing and increasing the effect of vertical outline correction via a motion detection signal when input images are a static image and a moving image respectively. SOLUTION: A current line signal b1 and an interpolation line signal a1 are inputted to a vertical outline correction circuit 109. A moving image part has the vertical outline correction effect larger than a static image part by a motion detection signal f1 of a motion detection circuit 103, and a corrected current line signal d1 and a corrected interpolation line c1 are outputted. In other words, the vertical outline correction effect is reduced and increased when an input image is equal to a static image and a moving image respectively. Then both current and interpolation line signals are synthesized and converted into a sequential scan signal e1 by a time base conversion circuit 110. The signal e1 is outputted. Thus, the same horizontal outline correction effect is secured between the static and moving images.

13. 发明专利

JPH09200692A RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPH09200692A
公开(公告)日：1997-07-31
申请号：JP708096
申请日：1996-01-19
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAMADA MIKIHIKO , TERAI KATSUMI
IPC分类号： H04N5/92 , G11B20/10
摘要： PROBLEM TO BE SOLVED: To attain video recording and reproduction for plural video images simultaneously by distributing plural video signals to plural hard disk units and writing them respectively into the units, combining and decoding the stored signals at reproduction to select video recording and reproduction of the plural video images simply. SOLUTION: When number of input video signals is one at recording, the signal is distributed into N by a signal distribution section 1 and when number is N, the signals fed to memories 2a-2n as they are and stored tentatively in them and written respectively into hard disk units 3a-3n. In the case of reproduction, the signals recorded in the N-sets of the hard disk units are read in the memories 2 respectively and coupled through multiplexing in the recorded order by a signal coupling section 5 and decoded into the original video signal and reproduced. Thus, recording/reproduction of one video image and plural video images are selected simply and the access time is remarkably reduced in comparison with the time requiring program-search in the case of video recording of the plural video images in time division.

14. 发明专利

JP2002190990A VIDEO SIGNAL PROCESSOR 失效
公开(公告)号：JP2002190990A
公开(公告)日：2002-07-05
申请号：JP2000390077
申请日：2000-12-22
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TERAI KATSUMI , NIO HIROSHI
IPC分类号： G06F11/00 , H04N5/44
摘要： PROBLEM TO BE SOLVED: To provide a waste-free loading means in transferring a program for switching the processing. SOLUTION: The video signal processor comprises a processor core 1, an input processing section 2, an output processing section 3, a program RAM 7 for storing a program being executed by the processor core 1, an instruction decoder 8, a circuit 6 for loading a program from a program memory 9 storing various programs, a program counter 5, and a control means 4, wherein the control means 4 controls loading from the program memory 9.

15. 发明专利

JP2001346129A VIDEO SIGNAL PROCESSOR 失效
公开(公告)号：JP2001346129A
公开(公告)日：2001-12-14
申请号：JP2000167256
申请日：2000-06-05
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： NIO HIROSHI , OKUMURA NAOJI , TERAI KATSUMI , ISHIKAWA YUICHI
IPC分类号： H04N5/20 , H04N5/57 , H04N5/66
摘要： PROBLEM TO BE SOLVED: To solve the problem of a conventional video signal processing unit that has deteriorated the gradation through ACL/ABL when a display device such as a CRT displays a video image with a high APL. SOLUTION: An average picture level(APL) of an input video signal and a level distribution of the input video signal are measured, a gradation correction coefficient of the video signal by which no ABL/ACL is operated is calculated on the basis of the average picture level and the level distribution and correcting the gradation of the input video signal on the basis of the gradation correction coefficient to display the video signal can realize the video image with high gradation.

16. 发明专利

JP2001346068A IMAGE CONVERTING DEVICE 失效
公开(公告)号：JP2001346068A
公开(公告)日：2001-12-14
申请号：JP2000167255
申请日：2000-06-05
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： ISHIKAWA YUICHI , OKUMURA NAOJI , NIO HIROSHI , TERAI KATSUMI , KAWAMURA HIDEAKI
IPC分类号： G06T3/00 , G06T3/40 , H04N1/387 , H04N1/393 , H04N5/205 , H04N5/262
摘要： PROBLEM TO BE SOLVED: To improve spatial frequency when an image is magnified concerning a signal processing in the case of magnifying the image. SOLUTION: This image converting device consists of an image filter, a coordinate transform unit, a level adjuster, a noted point detector, an image magnifier and an adder. An image before magnification is extracted by a place and a gain which are decided by the noted point detector and added to an image after magnification. Then the spatial frequency of the image after magnification is prevented from being reduced and an effect to improve a resolution feeling is obtained.

17. 发明专利

JP2001292341A CONTOUR ENHANCEMENT METHOD AND DIGITAL BROADCAST RECEIVER 失效
公开(公告)号：JP2001292341A
公开(公告)日：2001-10-19
申请号：JP2000107547
申请日：2000-04-10
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KAWAMURA HIDEAKI , OKUMURA NAOJI , NIO HIROSHI , TANAKA KAZUTO , ISHIKAWA YUICHI , TERAI KATSUMI , OHIRA KAZUO , ITAKURA SHOTARO
IPC分类号： G06T5/20 , H04N5/208 , H04N9/68
摘要： PROBLEM TO BE SOLVED: To provide a contour enhancement method that does not enhance notches of a tilted edge and to provide a digital broadcast receiver that conducts video conversion processing and image quality correction processing optimum to respective planes before synthesizing the planes. SOLUTION: The digital broadcast receiver applies optimum video conversion processing and optimum image quality correction processing to four planes; a moving picture plane, a still picture plane, a character graphic plane, and a caption plane separately outputted when a digital broadcast signal is decoded and the decoded signal is converted into a video signal, synthesizes the processed planes and provides an output of the synthesized planes. Furthermore, the image quality correction processing detects a tilted edge and conducts contour enhancement by adding the difference signal between the luminance signal of a target pixel and a means value of the luminance signals of eight pixels except the target pixel resident in an area of 3 longitudinal pixels × 3 lateral pixels in the vicinity of the target pixel to the luminance signal of the target pixel while suppressing the enhancement of the tilted edge.

18. 发明专利

JP2001045336A NOISE DETECTING DEVICE AND NOISE DETECTING METHOD AND SIGNAL PROCESSOR AND SIGNAL PROCESSING METHOD 失效
公开(公告)号：JP2001045336A
公开(公告)日：2001-02-16
申请号：JP21500099
申请日：1999-07-29
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： NIO HIROSHI , TERAI KATSUMI , OKUMURA NAOJI , TANAKA KAZUTO
IPC分类号： G06T5/00 , H04B1/10 , H04N1/409 , H04N5/208 , H04N5/217 , H04N5/262 , H04N5/911
摘要： PROBLEM TO BE SOLVED: To provide a signal processor and a signal processing method for properly correcting a video signal without deteriorating the original quality of a video signal even when details continue finely. SOLUTION: Any mosquito noise or ringing is detected by a ringing detecting device 2, and when any mosquito noise or ringing is generated, a video signal smoothed by a horizontal/vertical high-pass filter 22 is outputted, and when no mosquito noise or ringing is generated, the video signal is outputted as it is.

19. 发明专利

JP2000299793A VIDEO DISPLAY DEVICE, VERTICAL VELOCITY MODULATOR AND VIDEO DISPLAY METHOD 失效
公开(公告)号：JP2000299793A
公开(公告)日：2000-10-24
申请号：JP13839599
申请日：1999-05-19
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： UEHATA HIDEYO , TERAI KATSUMI , MIYATA MINORU , KITAHARA TOSHIAKI , OKUMURA NAOJI , TANAKA KAZUTO
IPC分类号： G09G1/00 , H04N3/30 , H04N3/32
摘要： PROBLEM TO BE SOLVED: To obtain a vertical velocity modulator that modulates a scanning velocity in the vertical direction so as to obtain a sharp reproduced image and to obtain a video display device using it and a video display method. SOLUTION: A parallel scanning circuit 11 outputs a parallel scanning signal to make forward and return scanning lines in parallel. A vertical correlation detection circuit 12 detects a part where a change in the luminance in the vertical direction exceeds a prescribed value on the basis of a luminance signal and provides an output of a movement control signal denoting a moving amount of scanning lines. A retrace period inversion circuit 13 inverts a time base of the moving control signal for a retrace period. A clamp circuit 14 clamps the moving control signal by a prescribed DC voltage in a timing of a horizontal synchronizing signal. A synthesis circuit 15 synthesizes the parallel scanning signal and the moving control signal and gives the synthesized signal to a vertical velocity modulation coil VMV as a vertical velocity modulation signal.

20. 发明专利

JPH10229527A SIGNAL PROCESSOR 失效
公开(公告)号：JPH10229527A
公开(公告)日：1998-08-25
申请号：JP3161597
申请日：1997-02-17
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： NIO HIROSHI , TERAI KATSUMI
IPC分类号： H04N5/44 , H04N5/45 , H04N5/60
摘要： PROBLEM TO BE SOLVED: To efficiently perform plural signal processings of video signals, audio signals and data signals, etc., by switching a processing program in the period of not performing the signal processing of the video signals and performing the arithmetic processing of other signals. SOLUTION: When it is detected that a vertical blanking period is to start by vertical synchronizing signals synchronized with the video signals inputted from an input terminal 12, the arithmetic program of the data of audio or the like inputted from a data input terminal 11 is down-loaded from a program ROM 17 to a processor 15. The signals stored in a buffer memory 13 are read, selected in a signal switching device 14 and inputted to the processor 15 and the arithmetic processing of the signals is performed. When the signal processing of the signals inside the buffer memory 13 is completed, the program for the signal processing of the video signals is down-loaded to the processor 15. When the vertical blanking period ends, the processor 15 restarts the arithmetic operation of the video signals inputted from a video signal input terminal 10.

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