公开(公告)号：US5119243A

公开(公告)日：1992-06-02

申请号：US452380

申请日：1989-12-19

申请人： Hiroaki Shimazaki ,  Toyohiko Matsuta ,  Etsuto Nakatsu ,  Masafumi Shimotashiro ,  Masaaki Kobayashi

发明人： Hiroaki Shimazaki ,  Toyohiko Matsuta ,  Etsuto Nakatsu ,  Masafumi Shimotashiro ,  Masaaki Kobayashi

IPC分类号： G11B5/09 ,  G11B20/10 ,  G11B20/14 ,  H03M5/20

CPC分类号： G11B20/10222 ,  G11B20/10009 ,  G11B20/1403 ,  G11B20/1496 ,  G11B5/09 ,  H03M5/20

摘要： A digital signal magnetic recording/reproducing apparatus modulates a digital signal with a carrier and performs recording/reproducing of the modulated signal. The carrier frequency is made equal to the clock frequency multiplied by a factor (N/M), where N and M are integers. The carrier and clock are reproduced using only one phase locked loop. When the carrier-modulated signal is recorded/reproduced using a magnetic recording medium, the phase of the modulated signal is shifted relative to the phase of the carrier. Shifting the clock phase before using the clock for decoding the demodulated signal prevents a degradation of error rate. By periodically inserting a clock phase reference signal in the recording signal, accuracy of adjustment of clock phase is improved.

摘要翻译： 数字信号磁记录/再现装置用载波调制数字信号并执行调制信号的记录/再现。 载波频率等于时钟频率乘以因子（N / M），其中N和M是整数。 载波和时钟仅使用一个锁相环进行复制。 当使用磁记录介质记录/再现载波调制信号时，调制信号的相位相对于载波的相位移位。 在使用时钟解码解调信号之前切换时钟相位可防止错误率的降低。 通过在记录信号中周期性地插入时钟相位参考信号，提高了时钟相位的调整精度。

公开(公告)号：US5062007A

公开(公告)日：1991-10-29

申请号：US450997

申请日：1989-12-15

申请人： Etsuto Nakatsu ,  Hiroaki Shimazaki ,  Toyohiko Matsuta ,  Masafumi Shimotashiro ,  Masaaki Kobayashi

发明人： Etsuto Nakatsu ,  Hiroaki Shimazaki ,  Toyohiko Matsuta ,  Masafumi Shimotashiro ,  Masaaki Kobayashi

IPC分类号： G11B5/09 ,  G11B20/10

CPC分类号： G11B20/10

摘要： A digital signal magnetic recording/reproducing apparatus converts a digital signal into a multi-value digital signal, followed by recording/reproducing the quadrature biphase modulated multi-value quadrature amplitude modulated signal. By using a multi-value quadrature amplitude modulation, a direct current component in the recorded signal can be eliminated, and the utilization efficiency of the recording frequency band of the digital signal magnetic recording/reproducing apparatus can be improved. Also, with respect to the amplitude non-linear characteristic which occurs in the magnetic recording/reproducing process, by providing a compensating circuit during the mapping before recording or after reproducing and demodulating, the deterioration of the S/N ratio of the reproduced and demodulated signal can be reduced to decrease the errors in the decoded data. Furthermore by bias-recording the multi-value quadrature amplitude modulation signal, the non-linearity of the electromagnetic conversion system is alleviated to decrease the deterioration of the S/N ratio due to distortion, thereby making the application of the modulation scheme more reliable.

摘要翻译： 数字信号磁记录/再现装置将数字信号转换为多值数字信号，随后记录/再现正交双相调制多值正交幅度调制信号。 通过使用多值正交幅度调制，可以消除记录信号中的直流分量，并且可以提高数字信号磁记录/再现装置的记录频带的利用效率。 此外，关于在磁记录/再现处理中发生的振幅非线性特性，通过在记录之前或再现和解调之后的映射期间提供补偿电路，再现和解调的S / N比的恶化 可以减少信号以减少解码数据中的误差。 此外，通过对多值正交幅度调制信号进行偏置记录，可以减轻电磁转换系统的非线性，以减少由于失真引起的S / N比的恶化，从而使得调制方案的应用更可靠。

公开(公告)号：US5124861A

公开(公告)日：1992-06-23

申请号：US329720

申请日：1989-03-28

申请人： Masafumi Shimotashiro ,  Toyohiko Matsuta ,  Masaaki Kobayashi ,  Etsuto Nakatsu ,  Hiroaki Shimazaki

发明人： Masafumi Shimotashiro ,  Toyohiko Matsuta ,  Masaaki Kobayashi ,  Etsuto Nakatsu ,  Hiroaki Shimazaki

IPC分类号： G11B20/10 ,  G11B20/14 ,  H04L27/36 ,  H04L27/38 ,  H04N5/926 ,  H04N5/935 ,  H04N9/87

CPC分类号： H04L27/362 ,  G11B20/10 ,  G11B20/14 ,  H04L27/3836 ,  H04N5/926 ,  H04N5/935 ,  H04N9/8722

摘要： A digital signal magnetic recording and playback apparatus which is applicable to digital video signals, utilizes quadrature amplitude modulation to produce a recording signal from a digital input signal with a carrier frequency being employed which is less than or equal to than the frequency of a recording system clock signal that is synchronized with the successive data values of the digital input signal. Carrier bursts are periodically inserted into the recording signal with a fixed period, through data inserted by a burst data insertion circuit and the carrier and clock signal are arranged to periodically coincide in phase, with the aforementioned period. The carrier frequency is made equal to the clock frequency multiplied by a factor (n/m), where n and m are integers and n

公开(公告)号：US5095392A

公开(公告)日：1992-03-10

申请号：US302325

申请日：1989-01-27

申请人： Hiroaki Shimazaki ,  Toyohiko Matsuta ,  Masafumi Shimotashiro ,  Masaaki Kobayashi

发明人： Hiroaki Shimazaki ,  Toyohiko Matsuta ,  Masafumi Shimotashiro ,  Masaaki Kobayashi

IPC分类号： G11B5/09 ,  G11B20/14 ,  G11B20/18 ,  H03M5/20 ,  H03M13/25 ,  H03M13/39 ,  H04L27/34 ,  H04N5/926

CPC分类号： H03M13/41 ,  G11B20/1496 ,  G11B20/1809 ,  G11B20/1833 ,  G11B5/09 ,  H03M13/25 ,  H03M13/39 ,  H03M5/20 ,  H04L27/3438 ,  H04N5/926

摘要： A digital signal magnetic recording/reproducing apparatus converts a digital signal into multi-value digital signals and performs recording/reproducing of a multi-value quadrature amplitude-modulated signal. By using the multi-value quadrature amplitude modulation, it is possible to remove the DC component in the recording signal and improve the utilization efficiency of the recording frequency band. Further, using a system to memorize the frequency characteristic of the magnetic recording/reproducing unit and effect Viterbi decoding regarding the intersymbol interference caused by the frequency as a convolutional coding, it is possible to detect the level without necessitating frequency equalization. Accordingly, there arises no deterioration of the S/N ratio by frequency equalization. Furthermore, by providing an encoder for error control coding by increasing the number of multi-values and a corresponding decoder, the error rate can be improved against the deterioration of the S/N ratio. Further, by bias recording the multi-value quadrature amplitude modulated signal, non-linearity of the electromagnetic conversion system is relaxed, and deterioration of the S/N ratio by distortion is improved.

摘要翻译： 数字信号磁记录/再现装置将数字信号转换为多值数字信号，并执行多值正交幅度调制信号的记录/再现。 通过使用多值正交幅度调制，可以去除记录信号中的DC分量并提高记录频带的利用效率。 此外，使用系统来存储磁记录/再现单元的频率特性，并且将由频率引起的码间干扰作为卷积编码进行维特比解码，可以在不需要频率均衡的情况下检测电平。 因此，通过频率均衡不会导致S / N比的恶化。 此外，通过提供用于通过增加多值的数量的差错控制编码的编码器和相应的解码器，可以相对于S / N比的劣化来提高错误率。 此外，通过偏置记录多值正交幅度调制信号，电磁转换系统的非线性松弛，并且通过失真降低S / N比。

公开(公告)号：US5255127A

公开(公告)日：1993-10-19

申请号：US724888

申请日：1991-07-02

申请人： Etsuto Nakatsu ,  Hiroaki Shimazaki ,  Haruo Ohta ,  Masaaki Kobayashi

发明人： Etsuto Nakatsu ,  Hiroaki Shimazaki ,  Haruo Ohta ,  Masaaki Kobayashi

IPC分类号： G11B20/10 ,  H03M13/39 ,  H04L1/00 ,  G11B5/09 ,  G11B20/06

CPC分类号： H04L1/0047 ,  G11B20/10009 ,  H03M13/39 ,  H04L1/0054

摘要： In transmission or recording of a digital signal by means of digital amplitude and phase modulation, particularly recording into and reproducing the same from the a magnetic recording medium, a digital amplitude/phase modulated signal to be demodulated is commonly affected by the non-linear amplitude characteristics and the effects of unwanted jitter and envelope variation. As the result, the error rate of decoded data will be increased. For compensation, the Viterbi decoding technique is employed with the use of a weighted distance value calculated by multiplying an Euclidean distance between the signal point of a reproduction signal and the datum point of each code by a positive weighting factor which is determined smaller when the code datum point is located further from the origin point of a coordinate system. Accordingly, the weighted distance of each reproduction signal point from its corresponding datum point can approximately be uniform thus ensuring less error decoding in general.

公开(公告)号：US20120242803A1

公开(公告)日：2012-09-27

申请号：US13513750

申请日：2010-12-10

申请人： Kenjiro Tsuda ,  Hiroaki Shimazaki ,  Tatsuro Juri ,  Hiromichi Ono

发明人： Kenjiro Tsuda ,  Hiroaki Shimazaki ,  Tatsuro Juri ,  Hiromichi Ono

IPC分类号： H04N13/02 ,  H04N13/04

CPC分类号： H04N13/128 ,  H04N13/239 ,  H04N13/296

摘要： A conventional device adjusts the convergence angle of its imaging unit in a manner that the left-and-right face detection areas are at the same coordinates and thus forms a stereo image that will be placed on a display screen during display, but fails to place a subject at an intended stereoscopic position. A stereo image capturing device (1000) detects a face area from a right image, detects a disparity using the left-and-right face areas, and sets the imaging parameters (the subject distance, focal length, stereo base, and convergence angle) to adjust the detected disparity to a disparity enabling the subject to be placed at an intended placement position. This device forms a stereo image having an appropriate stereoscopic effect in which a target subject is placed at an intended stereoscopic position. The device uses only a limited target area for face detection and thus requires less calculation for face detection.

摘要翻译： 常规装置以左右脸部检测区域处于相同坐标的方式调整其成像单元的会聚角度，从而形成将在显示期间放置在显示屏上的立体图像，但不能放置 在预期的立体位置的主体。 立体图像拍摄装置（1000）从右图像检测面部区域，使用左右脸部区域检测视差，并且设定成像参数（被摄体距离，焦距，立体声基座和会聚角度） 以将检测到的视差调整为使对象能够放置在预期放置位置的视差。 该装置形成具有适当的立体效果的立体图像，其中目标对象被放置在预期立体位置。 该设备仅使用有限的目标区域进行面部检测，因此需要较少的面部检测计算。

公开(公告)号：US07860160B2

公开(公告)日：2010-12-28

申请号：US11354082

申请日：2006-02-15

申请人： Hiroaki Shimazaki ,  Takashi Masuno ,  Takuma Chiba ,  Kei Tasaka ,  Kenjiro Tsuda ,  Tatsuro Juri ,  Katsuo Saigo

发明人： Hiroaki Shimazaki ,  Takashi Masuno ,  Takuma Chiba ,  Kei Tasaka ,  Kenjiro Tsuda ,  Tatsuro Juri ,  Katsuo Saigo

IPC分类号： H04N7/12 ,  H04N9/12 ,  G06K9/46

CPC分类号： H04N19/152 ,  H04N19/61 ,  H04N19/91

摘要： The present invention provides a video encoding device in which a capacity of a binary data storing unit is small, a size of the video encoding device is small, a video signal can be processed in real time, and reduction in quality of images generated from the eventually obtained data can be prevented. The video encoding device according to the present invention includes: a video encoding unit which encodes a video signal; a binarization unit which binarizes an encoded value obtained from the video encoding unit; and an entropy encoding unit which subjects entropy encoding to binary data obtained from the binarization unit. Here, the video encoding unit encodes the video signal based on a characteristic of the binarization performed by the binarization unit, so that an amount of binary data obtained from the binarization unit by binarizing the encoded value that is encoded based on the characteristic is less than an amount of binary data obtained by binarizing an encoded value that is encoded without being based on the characteristic.

摘要翻译： 本发明提供了一种视频编码装置，其中二进制数据存储单元的容量小，视频编码装置的尺寸小，可以实时处理视频信号，并且降低从 可以防止最终获得的数据。 根据本发明的视频编码装置包括：视频编码单元，其对视频信号进行编码; 二值化单元，其将从所述视频编码单元获得的编码值二值化; 以及熵编码单元，其对来自二值化单元的二进制数据进行熵编码。 这里，视频编码单元基于由二值化单元执行的二值化的特性对视频信号进行编码，从而通过二值化基于特性编码的编码值从二值化单元获得的二进制数据量小于 通过对编码的值进行二值化而获得的二进制数据量，而不是基于特征。

公开(公告)号：US20090169186A1

公开(公告)日：2009-07-02

申请号：US12303190

申请日：2007-06-11

申请人： Hiroaki Shimazaki

发明人： Hiroaki Shimazaki

IPC分类号： H04N5/00

CPC分类号： G11B27/36 ,  G11B20/1262 ,  G11B27/105 ,  G11B2020/10537 ,  G11B2220/2541 ,  G11B2220/2579 ,  G11B2220/2583 ,  H04N5/772 ,  H04N5/85 ,  H04N9/7921 ,  H04N9/8042 ,  H04N9/8047 ,  H04N9/8205 ,  H04N9/8227

摘要： Provided is a recording and reproducing apparatus that prevents, when a format instruction is given via an on-screen menu in image format of one of HDTV and SDTV standards and the content item to be erased is in the other standard, erroneous erasure of a content item on a recording medium having mixed content items recorded using these standards. The recording and reproducing apparatus (100) includes a controlling unit (110) that instructs, upon a user instruction to format via an inputting unit (109), an image generating unit (111) to generate an on-screen warning; the image generating unit (111) that generates, following the instruction from the controlling unit (110), the on-screen warning; a display unit (112) that displays the on-screen warning generated by the image generating unit (111); and a searching unit (116) that searches a disc for a directory recorded using a standard other than used for recording a CONTENTS directory.

摘要翻译： 提供了一种记录和再现装置，当通过HDTV和SDTV标准之一的图像格式的屏幕菜单给出格式化指令时，防止将被擦除的内容项目在另一标准中，内容的错误擦除 在具有使用这些标准记录的混合内容项的记录介质上的项目。 记录和再现装置（100）包括控制单元（110），用于指示用户通过输入单元（109）格式化指令，生成图像生成单元（111）以生成屏幕上警告; 所述图像生成单元（111）根据来自所述控制单元（110）的指示生成所述屏幕上的警告; 显示单元（112），其显示由图像生成单元（111）生成的屏幕上警告; 以及搜索单元（116），其使用除了用于记录CONTENTS目录之外的标准进行记录的目录来搜索盘。

公开(公告)号：US20050232597A1

公开(公告)日：2005-10-20

申请号：US11093826

申请日：2005-03-30

申请人： Hiroaki Shimazaki ,  Hideaki Mita ,  Hiroshi Saito

发明人： Hiroaki Shimazaki ,  Hideaki Mita ,  Hiroshi Saito

IPC分类号： H04N5/765 ,  H04N5/77 ,  H04N5/781 ,  H04N5/783 ,  H04N5/91 ,  H04N5/92 ,  H04N9/804 ,  H04N9/806

CPC分类号： H04N21/2387 ,  H04N5/772 ,  H04N5/783 ,  H04N9/8042 ,  H04N9/8063

摘要： A video recording apparatus provides a slow motion effect or a quick motion effect by digitally converting the frame-rate instead of by changing the playback speed of the film, and using few recording media without requiring any special device at playing. A picture encoding part encodes only valid frames by changing a rate-controlling method so that a predetermined playing frame-rate is obtained at a standard data-rate at playing. And a TS multiplexing part multiplexes by converting a frequency of a standard STC clock by only a ratio of valid frame-rate and playing frame-rate, and generating values for PCR, PTS, and DTS.

摘要翻译： 视频记录装置通过数字转换帧频来提供慢动作效果或快速动作效果，而不是通过改变影片的播放速度，并且使用少量记录媒体，而不需要任何特殊的播放设备。 图像编码部分通过改变速率控制方法仅对有效帧进行编码，使得在播放时以标准数​​据速率获得预定播放帧速率。 并且通过仅通过有效帧速率和播放帧速率的比率转换标准STC时钟的频率，并生成PCR，PTS和DTS的值，进行TS复用部分复用。

公开(公告)号：US5293277A

公开(公告)日：1994-03-08

申请号：US791536

申请日：1991-11-14

申请人： Hiroaki Shimazaki ,  Masamitsu Ohtsu

发明人： Hiroaki Shimazaki ,  Masamitsu Ohtsu

IPC分类号： H04N5/7826 ,  G11B5/008 ,  G11B5/09 ,  G11B33/12 ,  H04N5/92 ,  G11B15/14

CPC分类号： G11B33/122 ,  G11B5/0086 ,  G11B5/09

摘要： In a digital signal magnetic recording/reproducing apparatus, input digital signals of plural channels and a recording current control signal expressing recording current values corresponding to the respective digital signals are time-division mulitplexed and transmitted into a rotary cylinder, and the digital signals and recording current control signal are separated by a circuit built in the rotary cylinder. The recording current for each of the digital signals is controlled depending on the recording current control signal. By time-division multiplexing the input digital signals of plural channels and transmitting the multiplexed signal into the rotary cylinder, the number of channels of the rotary transformer can be reduced. Further, by transmitting the recording current control signal into the rotary cylinder, the recording current of the digitally transmitted signal can be adjusted.

摘要翻译： 在数字信号磁记录/再现装置中，多通道的输入数字信号和表示对应于各个数字信号的记录电流值的记录电流控制信号被时分复用并传输到旋转圆筒中，数字信号和记录 电流控制信号由旋转圆筒内置的电路分开。 每个数字信号的记录电流根据记录电流控制信号来控制。 通过对多个通道的输入数字信号进行时分复用并将多路复用的信号发送到旋转圆筒中，可以减少旋转变压器的通道数。 此外，通过将记录电流控制信号发送到旋转圆筒中，可以调节数字发送信号的记录电流。