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1. 发明授权

US06631242B1 Apparatus for recording and reproducing digital picture data 失效
标题翻译：用于记录和再现数字图像数据的装置
公开(公告)号：US06631242B1
公开(公告)日：2003-10-07
申请号：US08424156
申请日：1995-04-17
申请人： Yukio Kubota , Yoichirou Senshu , Akihiro Uetake , Shinichi Hasegawa , Moriyuki Kawaguchi , Hajime Inoue , Takahito Seki , Keiji Kanota , Tetsujiro Kondo , Naoki Honda
发明人： Yukio Kubota , Yoichirou Senshu , Akihiro Uetake , Shinichi Hasegawa , Moriyuki Kawaguchi , Hajime Inoue , Takahito Seki , Keiji Kanota , Tetsujiro Kondo , Naoki Honda
IPC分类号： H04N5782
CPC分类号： H04N9/8042 , G11B5/0086 , G11B5/09 , G11B5/85 , G11B15/1875 , G11B20/00007 , G11B20/1833 , H04N5/782 , H04N5/78263 , H04N9/8047 , H04N9/8063 , H04N19/98
摘要： In an apparatus for recording and reproducing a digital picture signal, the large number of data bits in the digital picture signal to be recorded is reduced by a ratio of approximately 1:9, and the thus compressed data are recorded with a recording density of at least approximately 0.8 bit/&mgr;m2 in relatively narrow successive skewed tracks without guard bands on a metal evaporated magnetic tape having predefined characteristics. The magnetic tape has a width of no more than approximately 8 mm and a thickness of no more than approximately 7 &mgr;m and is wound in a relatively small size cassette.
摘要翻译：在用于记录和再现数字图像信号的装置中，要记录的数字图像信号中的大量数据比例减少大约1:9的比率，并且将这样压缩的数据以记录密度记录在在具有预定特征的金属蒸发磁带上，在相对狭窄的连续倾斜轨道中，最小约0.8比特/毫米<2>无保护带。磁带具有不大于约8mm的宽度和不大于约7μm的厚度并且缠绕在相对较小尺寸的盒中。

2. 发明授权

US5426538A Recording and/or reproducing apparatus with means for establishing an after-recording area 失效
标题翻译：具有用于建立后记录区域的装置的记录和/或再现装置
公开(公告)号：US5426538A
公开(公告)日：1995-06-20
申请号：US026735
申请日：1993-03-05
申请人： Keiji Kanota , Yukio Kubota , Takahito Seki
发明人： Keiji Kanota , Yukio Kubota , Takahito Seki
IPC分类号： G11B15/467 , G11B20/12 , G11B27/036 , G11B27/30 , H04N5/92 , G11B5/09 , G11B15/14 , G11B15/18 , G11B27/02
CPC分类号： H04N5/9208 , G11B15/4678 , G11B20/1208 , G11B27/036 , G11B27/3027 , G11B27/3063 , G11B2220/90
摘要： Rotary head recording and/or reproducing apparatus in which respective oblique tracks on a record medium are scanned, each track having an information signal area in which information data is recorded and a track following area in which a tracking control pilot signal is recorded. The track following area precedes the information signal area; and in the preferred embodiment, an additional track following area follows the information signal area. The pilot signal is recorded in only a portion of the track following area, the remainder of which has timing sync data recorded therein. In an after-recording mode the timing sync data is reproduced, detected and used as a reference to define an after-record area.
摘要翻译：扫描记录介质上的各倾斜轨道的旋转头记录和/或再现装置，每个轨道具有记录信息数据的信息信号区域和记录跟踪控制导频信号的跟踪区域。轨道跟随区域在信息信号区域之前; 并且在优选实施例中，附加轨道跟随区域在信息信号区域之后。导频信号仅记录在磁道跟随区域的一部分中，其余部分具有记录在其中的定时同步数据。在后续记录模式中，定时同步数据被再现，检测并用作参考以定义后记录区域。

3. 发明授权

US5737480A Data recording apparatus 失效
公开(公告)号：US5737480A
公开(公告)日：1998-04-07
申请号：US583287
申请日：1996-01-05
申请人： Takahito Seki , Yukio Kubota , Keiji Kanota , Hajime Inoue
发明人： Takahito Seki , Yukio Kubota , Keiji Kanota , Hajime Inoue
IPC分类号： G11B20/10 , G11B20/12 , G11B20/18 , H04N5/7826 , H04N5/783 , H04N5/926 , H04N5/945 , H04N5/95 , H04N9/804 , H04N5/917 , H04N5/91
CPC分类号： H04N9/8047 , H04N5/9264 , H04N5/945 , H04N5/78266 , H04N5/783 , H04N5/95
摘要： Digital data representing a compressed image is separated into priority data and normal data, and formatted so that the priority data is repeatedly recorded on a magnetic tape. The transmission rate of the digital data is compared with the recording rate on the magnetic tape to control the number of repetitions of the priority data.

4. 发明授权

US5973868A Recording and/or reproducing apparatus with means for establishing an after-recording area 失效
公开(公告)号：US5973868A
公开(公告)日：1999-10-26
申请号：US769230
申请日：1996-12-18
申请人： Keiji Kanota , Yukio Kubota , Takahito Seki
发明人： Keiji Kanota , Yukio Kubota , Takahito Seki
IPC分类号： G11B15/467 , G11B20/12 , G11B27/036 , G11B27/30 , H04N5/92 , G11B5/09 , G11B5/584 , H04N5/95
CPC分类号： H04N5/9208 , G11B15/4678 , G11B20/1208 , G11B27/036 , G11B27/3027 , G11B27/3063 , G11B2220/90
摘要： Rotary head recording and/or reproducing apparatus in which respective oblique tracks on a record medium are scanned, each track having an information signal area in which information data is recorded and a track following area in which a tracking control pilot signal is recorded. The track following area precedes the information signal area; and in the preferred embodiment, an additional track following area follows the information signal area. The pilot signal is recorded in only a portion of the track following area, the remainder of which has timing sync data recorded therein. In an after-recording mode the timing sync data is reproduced, detected and used as a reference to define an after-record area.

5. 发明授权

US5668677A Apparatus for recording and reproducing variable length codes 失效
标题翻译：用于记录和再现可变长度码的装置
公开(公告)号：US5668677A
公开(公告)日：1997-09-16
申请号：US220172
申请日：1994-03-30
申请人： Takahito Seki , Yukio Kubota
发明人： Takahito Seki , Yukio Kubota
IPC分类号： G11B20/12 , G11B27/30 , H04N5/7826 , H04N5/784 , H04N5/92 , H04N5/926 , H04N7/54 , G11B5/09 , G11B5/00
CPC分类号： H04N5/9268 , G11B20/1208 , G11B27/3027 , G11B27/3063 , H04N5/9264 , H04N7/54 , G11B2220/90 , H04N5/78263 , H04N5/784
摘要： A digital signal recording and reproducing apparatus are disclosed which can record digital data of the advanced television (ATV) system or some other digital data onto a recording medium without the necessity of displacing recording areas for sub codes of the recording medium and can thus make effective use of the recording capacity of the recording medium. When an ordinary television signal is to be recorded, the length of the Inter Block Gap IBG and amble areas between an audio signal recording area and a video signal recording area is set to an integral number of times the length of a synchronizing block of a digital audio signal and a digital video signal. When data of the ATV system or like data are to be recorded, the data are recorded continuously from the audio signal recording area to the video signal recording area.
摘要翻译：公开了一种数字信号记录和再现装置，其可以将高级电视（ATV）系统的数字数据或一些其他数字数据记录到记录介质上，而不需要移动用于记录介质的子代码的记录区域，并且因此可以有效地使用记录介质的记录容量。当要记录普通的电视信号时，音频信号记录区和视频信号记录区之间的间隔间隙IBG的长度和位置之间的长度被设置为数字的同步块的长度的整数倍音频信号和数字视频信号。当要记录ATV系统或类似数据的数据时，将数据从音频信号记录区连续记录到视频信号记录区。

6. 发明授权

US5526199A Data recording apparatus 失效
标题翻译：数据记录装置
公开(公告)号：US5526199A
公开(公告)日：1996-06-11
申请号：US417263
申请日：1995-04-05
申请人： Takahito Seki , Yukio Kubota , Keiji Kanota , Hajime Inoue
发明人： Takahito Seki , Yukio Kubota , Keiji Kanota , Hajime Inoue
IPC分类号： G11B20/10 , G11B20/12 , G11B20/18 , H04N5/7826 , H04N5/783 , H04N5/926 , H04N5/945 , H04N5/95 , H04N9/804 , G11B5/09
CPC分类号： H04N9/8047 , H04N5/9264 , H04N5/945 , H04N5/78266 , H04N5/783 , H04N5/95
摘要： Digital data representing a compressed image is separated into priority data and normal data, and formatted so that the priority data is repeatedly recorded on a magnetic tape. The transmission rate of the digital data is compared with the recording rate on the magnetic tape to control the number of repetitions of the priority data.
摘要翻译：表示压缩图像的数字数据被分成优先权数据和正常数据，并格式化，使得优先数据被重复记录在磁带上。将数字数据的传输速率与磁带上的记录速率进行比较，以控制优先级数据的重复次数。

7. 发明授权

US5583707A Digital video tape recorder with data block I.D. signal error correction 失效
标题翻译：数字录像机，数据块I.D. 信号纠错
公开(公告)号：US5583707A
公开(公告)日：1996-12-10
申请号：US415291
申请日：1995-04-03
申请人： Takahito Seki
发明人： Takahito Seki
IPC分类号： G11B20/12 , G11B20/18 , G11B27/30 , H04N5/92 , H04N5/926 , H04N5/945 , H04N9/804 , H04N9/806 , H04N9/82 , G11B5/09
CPC分类号： G11B20/1208 , G11B20/1833 , G11B27/3027 , H04N5/9206 , H04N5/9264 , H04N5/945 , H04N9/8047 , G11B2220/90 , H04N9/8042 , H04N9/8063 , H04N9/8205
摘要： In a digital video tape recorder that has rotary magnetic heads for recording digital video information on a magnetic tape in the form of data blocks having a predetermined length, an ID signal is generated for each data block. The ID signal includes a number of data bits which identify the address of the data block, the information contained in the data block, and so forth. For the purpose of generating error code parity symbols, the ID signal is divided into a sequence of four-bit symbols, and at least two parity symbols are generated according to an error correction code for correcting errors in the sequence of four-bit symbols. The ID signal and parity symbols are recorded together on the magnetic tape. In this way, error correction can be performed on the ID signal during reproduction.
摘要翻译：在具有旋转磁头的数字磁带录像机中，以具有预定长度的数据块的形式在磁带上记录数字视频信息，为每个数据块生成ID信号。 ID信号包括识别数据块的地址，数据块中包含的信息等的多个数据位。为了产生错误代码奇偶校验符号，ID信号被分成四位符号序列，并且根据用于校正四位符号序列中的错误的纠错码来生成至少两个奇偶校验符号。 ID信号和奇偶校验符号一起记录在磁带上。以这种方式，可以在再现期间对ID信号进行纠错。

8. 发明授权

US5223991A Digital video tape recorder 失效
标题翻译：数字视频录像机
公开(公告)号：US5223991A
公开(公告)日：1993-06-29
申请号：US685665
申请日：1991-04-16
申请人： Michio Nagai , Takahito Seki
发明人： Michio Nagai , Takahito Seki
IPC分类号： G11B15/087 , G11B20/10 , G11B20/12 , G11B27/00 , G11B27/28 , G11B27/30
CPC分类号： G11B27/3027 , G11B27/005 , G11B27/3063 , G11B2220/90
摘要： In a digital signal reproducing apparatus for detecting identifying data in a reproduced digital data signal which had been recorded on slant tracks formed sequentially on a magnetic tape by a rotary head and which is reproduced at a speed higher than a normal playback speed, a synchronizing detector circuit detects synchronizing data included in the reproduced digital signal and, in response thereto, a pulse signal is generated and supplied to an identifying data detector circuit which, in response to such pulse signal, receives a plurality of corresponding identifying data. The identifying data detector circuit determines the identifying data value which corresponds to the majority of the received plurality of identifying data.

9. 发明授权

US5193035A Apparatus and method for phase correction of a clock signal by controlling the variable delaying thereof 失效
标题翻译：通过控制可变延迟对时钟信号进行相位校正的装置和方法
公开(公告)号：US5193035A
公开(公告)日：1993-03-09
申请号：US558624
申请日：1990-07-27
申请人： Keiji Kanota , Takahito Seki
发明人： Keiji Kanota , Takahito Seki
IPC分类号： G11B20/14 , H04L7/02 , H04L7/033 , H04L25/497 , H04L27/14 , H04N5/93 , H04N5/935
CPC分类号： H04N5/935 , H04N5/93
摘要： In a playback phase correction apparatus for a video recorder, a signal level of an input signal is compared with predetermined reference levels at times according to a playback clock signal. The apparatus operates to continuously detect whether the phase of the playback clock approaches or recedes from a point in time at which the eye pattern of the input signal is at a maximum value by comparing a count value obtained from the comparison results of the reference level counts from a previous cycle with those of the current cycle. Then, the apparatus controls a playback clock delay circuit on the basis of these count values so than an optimal count value is continuously maintained, thus ensuring that the timing of the playback clock is maintained in synchronization with the maximum eye pattern interval of the input signal.

10. 发明授权

US06247112B1 Bit manipulation instructions 有权
标题翻译：位操作说明
公开(公告)号：US06247112B1
公开(公告)日：2001-06-12
申请号：US09223105
申请日：1998-12-30
申请人： Takahito Seki
发明人： Takahito Seki
IPC分类号： G06F500
CPC分类号： G06F9/30032 , G06F5/01 , G06F9/30145 , G06F9/30167
摘要： Methods and systems for bit manipulation instructions are disclosed. The instruction srlmsk shifts a value stored in a first register based on a shift value stored in a second register and loads N bits from the shift register to a third register using a single instruction. The instruction concat loads the lower N bits from a first register into the high order bits of a second register and loads a subset of least significant bits of a third register to the low order bits of the second register using a single instruction. These instructions may be used to improve variable length encoding and decoding processes.
摘要翻译：公开了位操作指令的方法和系统。指令srlmsk基于存储在第二寄存器中的移位值移位存储在第一寄存器中的值，并且使用单个指令将N位从移位寄存器加载到第三寄存器。指令串联将低N位从第一寄存器加载到第二寄存器的高位，并使用单个指令将第三寄存器的最低有效位的子集加载到第二寄存器的低位。这些指令可用于改进可变长度编码和解码过程。

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