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1. 发明专利

JP2007074634A Moving image compressing apparatus 有权
标题翻译：移动图像压缩装置
公开(公告)号：JP2007074634A
公开(公告)日：2007-03-22
申请号：JP2005262002
申请日：2005-09-09
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： FUJII SHOZO , OKA HIDEMI , MIZUNO SHINJIRO , SETO SHINYA , ARIMURA KOJI
IPC分类号： H03M7/30 , H04N19/124 , H04N19/13 , H04N19/134 , H04N19/14 , H04N19/196 , H04N19/423 , H04N19/50 , H04N19/51
摘要： PROBLEM TO BE SOLVED: To prevent occurrence of image quality deterioration by preventing response from being delayed even when a state of an input video image is changed in a VBR type moving image compressing apparatus. SOLUTION: A moving image compressing apparatus comprises: a video information detection means 3 for determining video information by comparing an encoded screen from an encoded screen memory 1 with a reference screen from a reference screen memory 2; a compression state predicting means 5 for calculating compression prediction information α from a degree of a change between video information in the past and video information of the encoded screen; and a code amount control means 6 for determining a code amount to be assigned to the encoded screen using a code amount based on encoding in the past, a result value of a quantization index and the compression prediction information α. Thus, a difficulty level of compression is relatively determined from the degree of the change in the video information and the determined difficulty level is operated upon the code amount and the result value of the quantization index as compression prediction information to determine accurate code amount assignment. As a result, high image quality can be achieved at all the time without delaying code amount control from a video image change. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：即使当在VBR型运动图像压缩装置中改变输入视频图像的状态时，通过防止响应延迟来防止图像质量劣化的发生。运动图像压缩装置包括：视频信息检测装置3，用于通过将来自编码屏幕存储器1的编码屏幕与参考屏幕存储器2的参考屏幕进行比较来确定视频信息; 压缩状态预测装置5，用于从过去的视频信息和编码的屏幕的视频信息之间的变化程度计算压缩预测信息α; 以及代码量控制装置6，用于使用基于过去的编码的代码量，量化索引的结果值和压缩预测信息α来确定要分配给编码屏幕的代码量。因此，根据视频信息的变化程度相对地确定压缩的难度级别，并且将所确定的难度级别作为压缩预测信息，将代码量和量化索引的结果值进行操作，以确定准确的代码量分配。结果，可以始终实现高图像质量，而不会延迟视频图像改变的代码量控制。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2002305748A VARIABLE LENGTH CODING METHOD, VIDEO COMPRESSION METHOD AND DEVICE EMPLOYING THEM 失效
公开(公告)号：JP2002305748A
公开(公告)日：2002-10-18
申请号：JP2001105449
申请日：2001-04-04
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： FUJII SHOZO , OKA HIDEMI , MIZUNO SHINJIRO
IPC分类号： H04N19/50 , H03M7/30 , H03M7/40 , H04N19/42 , H04N19/46 , H04N19/463 , H04N19/503 , H04N19/51 , H04N19/513 , H04N19/52 , H04N19/60 , H04N19/61 , H04N19/625 , H04N19/68 , H04N19/70 , H04N19/91 , H04N7/32 , H04N7/30
摘要： PROBLEM TO BE SOLVED: To solve a problem of a conventional device compatible with both the DV (Specification of Consumer-Use Digital VCRs Using 6.3 mm Magnetic Tape) compression and the compression utilizing other inter-frame correlation such as the MPEG that has needed a large circuit scale, has been expensive and has required high power consumption because respective companders are to be independently installed. SOLUTION: A variable length code in matching with the definition of a code word of the variable length code in compliance with the DV standard is adopted for variable length coding of a compressor employing inter-frame correlation. The device is provided with an exception processing section 5 that conducts exception processing of coding the code word of variable length coding into predetermined other code word when the code word resulting in variable length coding takes a particular bit pattern (especially all bits become '1') and also has a configuration of attaching adjacent difference information of a motion vector or motion vectors to a series of coefficients after orthogonal transform to apply variable length coding to the resulting coefficients.

3. 发明专利

JP2002112191A VIDEO RECORDER, MEDIUM AND INFORMATION AGGREGATE 失效
公开(公告)号：JP2002112191A
公开(公告)日：2002-04-12
申请号：JP2000298589
申请日：2000-09-29
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YOSHINO TADASHI , OKABE MASAO , OKA HIDEMI , YOSHIDA KATSUHIKO , MIZUNO SHINJIRO
IPC分类号： H04N5/7826 , G11B20/10 , H04N5/92
摘要： PROBLEM TO BE SOLVED: To solve a problem of the conventional consumer digital video tape recorders, adopting the technology of the existing professional digital VTR system as it is, can ensure only a recording time of 30 minutes for a small cassette, when recording a 480/60p signal that is a half of 60 minutes, when recording a 480/60i signal and likewise only a recording time of 15 minutes, when recording a 720/60p signal. SOLUTION: When recording 480/60p signal to the 720/60p signal, a high compression rate of a video signal is adopted to reduce a video data quantity through compression, and a high digital modulation frequency is employed to record the resulting video data onto a magnetic tape, so as to ensure a recording time of 60 minutes for the small cassette, when recording the 480/60p signal and the recording time of 30 minutes for the small cassette, when recording the 720/60p signal.

4. 发明专利

JP2001008156A IMAGE RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JP2001008156A
公开(公告)日：2001-01-12
申请号：JP17357399
申请日：1999-06-21
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YOSHIDA KATSUHIKO , OKABE MASAO , MIZUNO SHINJIRO , OKA HIDEMI
IPC分类号： H04N5/91 , G11B27/28
摘要： PROBLEM TO BE SOLVED: To efficiently record still images and to easily execute access to the recorded still images and their management by solving problems that the number of pictures allowed to be recorded is sharply reduced when the same still image is repeatedly recorded in a magnetic tape over 6 to 7 sec and much time is required for accessing a required still image. SOLUTION: A counting means 115 outputs the number of still images continuously recorded in a magnetic tape 101 as a count value, an index preparation circuit 111 prepares an index image by repeating the compression of a still image to be recorded to 1/n data volume in each updating of the count value and the storage of the compressed image in a position corresponding to the count value in an index image memory 112 and a controller 105 records an index image on a tape position continued to m still images which have been already recorded in a recording signal processing circuit 114 when the count value becomes (m).

5. 发明专利

JP2000165841A DATA TRANSMITTER-RECEIVER 失效
公开(公告)号：JP2000165841A
公开(公告)日：2000-06-16
申请号：JP33716798
申请日：1998-11-27
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KAWAKAMI KAZUO , OKA HIDEMI
IPC分类号： H04N5/91 , G06F21/10 , G11B20/10 , H04N5/92 , H04N7/167 , H04N19/00 , H04N19/42 , H04N19/423 , H04N19/467 , H04N21/4367 , H04N21/4408 , H04N21/442 , H04N7/24
摘要： PROBLEM TO BE SOLVED: To provide a data transmitter-receiver by which data processing for encryption and decoding is selected with a simple configuration by discriminating a type of video compression data. SOLUTION: Digital data are encrypted or decoded by using an encryption key generated by an authentication section 3 depending on a capacity predetermined on the basis of video compression by digital video DV or moving picture experts group MPEG or the like discriminated by a video compression discrimination section 5, and a processing procedure of the digital data among a storage section 6 such as a memory or FIFO, an encryption section 7 and a decoding section 8 is selected based on video compression information by the video compression discrimination section 5 go as to have provision for encryption on the IEEE 1394 and to separate the data into the data depending on the video compression such as the DV or MPEG.

6. 发明专利

JPH09130745A VIDEO SIGNAL RECORDER 失效
公开(公告)号：JPH09130745A
公开(公告)日：1997-05-16
申请号：JP28478295
申请日：1995-11-01
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAMAMOTO YOSHINORI , KASHIRO TAKAO , YAMAUCHI EIJI , OKA HIDEMI
IPC分类号： H04N5/91 , H04N5/92
摘要： PROBLEM TO BE SOLVED: To record a video signal so as to avoid a reproduced image from swinging vertically even when an input video signal with discontinuous fields is recorded. SOLUTION: A vertical synchronizing signal of an input video signal is detected (102) and a frame reference signal is generated (103). In this case, the video signal is recorded so as to avoid an image from swinging at reproduction by selecting different phase from rising and falling of the frame reference signal with respect to the vertical synchronizing signal part of the video signal.

7. 发明专利

JPH08163396A VIDEO SIGNAL PROCESSOR 失效
公开(公告)号：JPH08163396A
公开(公告)日：1996-06-21
申请号：JP30463494
申请日：1994-12-08
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAMAMOTO YOSHINORI , YAMAUCHI EIJI , OKA HIDEMI , INOUE AKINARI , KASHIRO TAKAO
IPC分类号： H04N5/06 , H04N5/12 , H04N5/91
摘要： PURPOSE: To stably control recording even in the case of the large change of the phase of vertical synchronism of an input signal. CONSTITUTION: A frame reference signal generation circuit a107 which generates a frame reference signal a111 by the vertical synchronizing signal detected by a vertical synchronizing signal detection circuit 102 and a frame reference signal generation circuit b108 which generates a frame reference signal b112 by a clock 110 controlled in a PLL 109 by the frame reference signal a111 and the frame reference signal b112 are provided. Phases or the frame reference signal a111 and the frame reference signal b112 are controlled by a phase control circuit a105 to prevent the PLL from being unlocked even in the case of the large change of the phase of the vertical synchronizing signal of the input synchronizing signal, and disturbance of a main signal processing part 114 is prevented, thereby stably controlling recording.

8. 发明专利

JPH0898149A VIDEO SIGNAL PROCESSOR 失效
公开(公告)号：JPH0898149A
公开(公告)日：1996-04-12
申请号：JP23289094
申请日：1994-09-28
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAMAUCHI EIJI , OKA HIDEMI , YAMAMOTO YOSHINORI , KASHIRO TAKAO , INOUE AKINARI
IPC分类号： H04N5/06 , H03L7/14 , H04N5/956
摘要： PURPOSE: To record a non-standard video signal in a device which digitally records a picture signal. CONSTITUTION: A synchronizing signal from which a horizontal/vertical synchronizing signal is separated by a synchronization separator 2 is synchronously protected by using a clock which is stable in terms of a frequency. The protected horizontal synchronizing signal hd is supplied to a clock selector 7. The clock selector 7 selects the clock whose phase is the nearest to the fall edge of hd, and outputs it to a frequency divider 4. A video signal supplied to an input terminal 1 is A/D-converted by using the selected clock, is latched by the clock which the frequency divider 4 outputs and is written into a memory 12. A PLL unit 13 generates the clock synchronized with the vertical synchronizing signal and outputs it to a read controller 15. The read controller 15 generates a read control signal and reads data from the memory 12.

9. 发明专利

JPH06333381A DIGITAL SIGNAL PROCESSOR 失效
公开(公告)号：JPH06333381A
公开(公告)日：1994-12-02
申请号：JP12232193
申请日：1993-05-25
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： ISHIMOTO SHUNEI , ISHIWATARI TETSUO , OKA HIDEMI , MIZUGUCHI NOBUAKI , YAMAGUCHI SUSUMU , SATO MASASHI
IPC分类号： G06F5/06 , G11C7/00 , G11C8/04 , H03K5/135 , H03M7/00
摘要： PURPOSE:To process signals of plural channels with the simple constitution of the device by writing/reading again the digital signals of plural channels read out of a memory and thereafter outputting them as one digital signal. CONSTITUTION:By receiving the output value from a counter 2 and a signal designating a number of digital signals for every channel inputted from input terminals 14, 15, an address generating circuit 3 outputs an address value and a reading/writing control circuit 4 outputs simultaneously a reading control signal. A memory 1 receives these control signals and outputs a digital signal to a memory 5 and a memory 6. In the memories 5 and 6, the output signal from the memory 1 is written and read, by receiving address value data outputted from an address generating circuit 8 and a reading control signal/a writing control signal outputted from a writing/reading control circuit 9. The respective digital signals of two channels outputted from the memories 5, 6 are inputted to a changeover circuit 10 and outputted while the two channels are changed succesively and alternately.

10. 发明专利

JP2006211228A Method and apparatus for coding moving image 审中-公开
标题翻译：编码移动图像的方法和装置
公开(公告)号：JP2006211228A
公开(公告)日：2006-08-10
申请号：JP2005019811
申请日：2005-01-27
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： OKA HIDEMI , MIZUNO SHINJIRO
IPC分类号： H04N19/50 , H04N19/12 , H04N19/142 , H04N19/172 , H04N19/189 , H04N19/503 , H04N19/577 , H04N19/587
摘要： PROBLEM TO BE SOLVED: To prevent the increase of an unnecessary coding amount and enable efficient coding with restrained image quality deterioration, in regard to a method and an apparatus for coding an moving image suitable for a moving image coding and recording apparatus.
SOLUTION: The moving image coding apparatus includes a first image change detection means 103 for calculating the correlation between an object frame and an immediately preceding frame from an image data stored in a frame memory 102, and for outputting first continuous information; a second image change detection means 104 for detecting the correlation between referred frames to which the object frame refers when performing interframe coding with the object frame from the image data stored in the frame memory 102, and for outputting second continuous information; and a frame allocation decision means 105 for inputting the first continuous information and the second continuous information, and for selecting the allocation of a coding format.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了防止不必要的编码量的增加，并且能够对具有限制的图像质量劣化的有效编码，对于适用于运动图像编码和记录装置的运动图像的编码方法和装置来说。解决方案：运动图像编码装置包括：第一图像改变检测装置103，用于从存储在帧存储器102中的图像数据计算目标帧和紧接在前帧之间的相关性，并用于输出第一连续信息; 第二图像改变检测装置104，用于当存储在帧存储器102中的图像数据中执行帧间编码与目标帧的对应帧所参照的参考帧之间的相关性，并输出第二连续信息; 以及帧分配决定装置105，用于输入第一连续信息和第二连续信息，并用于选择编码格式的分配。版权所有（C）2006，JPO＆NCIPI

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