公开(公告)号：US06973132B2

公开(公告)日：2005-12-06

申请号：US09963556

申请日：2001-09-27

Applicant: Noriyuki Sato ,  Toshihisa Nakai

Inventor： Noriyuki Sato ,  Toshihisa Nakai

IPC: H04N7/173 ,  H04N19/00 ,  H04N19/12 ,  H04N19/159 ,  H04N19/196 ,  H04N19/463 ,  H04N19/65 ,  H04N19/70 ,  H04N19/85 ,  H04N21/426 ,  H04N21/4425 ,  H04N21/6437 ,  H04N7/12

CPC classification number: H04N21/6437

Abstract: A transmission header compressor and a moving-picture encoder each include a respective circuit for synchronizing a timing at which the compressor inhibits compression of transmission headers with a timing at which the encoder executes intra-frame coding. A moving-picture transmission system including the compressor and encoder is also disclosed.

Abstract translation: 发送报头压缩器和运动图像编码器各自包括用于使压缩器禁止发送报头的压缩的定时与编码器执行帧内编码的定时同步的各自的电路。 还公开了包括压缩器和编码器的运动图像传输系统。

公开(公告)号：US06683988B1

公开(公告)日：2004-01-27

申请号：US09412322

申请日：1999-10-05

Applicant: Shigeru Fukunaga ,  Toshihisa Nakai

Inventor： Shigeru Fukunaga ,  Toshihisa Nakai

IPC: G06K936

CPC classification number: H04N21/6379 ,  G06T9/004 ,  H04N7/17318 ,  H04N21/4382 ,  H04N21/44209 ,  H04N21/6377 ,  H04N21/658

Abstract: In a picture transmission system that transmits a series of pictures from a coding apparatus to a decoding apparatus, each picture being coded and decoded with reference to a preceding picture, when a transmission error occurs, the decoding apparatus detects a decoding error caused by the transmission error and sends an error signal to the coding apparatus. The coding apparatus and decoding apparatus then both modify part of a reference picture affected by the decoding error, making identical modifications. A subsequent picture is coded and decoded with reference to the modified reference picture, thereby recovering from the transmission error with minimum loss of coding efficiency and picture quality.

Abstract translation: 在从编码装置发送一系列图像到解码装置的图像传输系统中，每个图像参照前面的图像被编码和解码，当发生传输错误时，解码装置检测由传输引起的解码错误 并向编码装置发送错误信号。 然后，编码装置和解码装置都对由解码错误影响的参考图像的一部分进行修改，进行相同的修改。 参照修改后的参照图像对后续图像进行编码和解码，由此以最小的编码效率和图像质量损失从传输错误中恢复。

公开(公告)号：US06456664B1

公开(公告)日：2002-09-24

申请号：US09272209

申请日：1999-03-19

Applicant: Yasuko Matsumura ,  Shigeru Fukunaga ,  Toshihisa Nakai

Inventor： Yasuko Matsumura ,  Shigeru Fukunaga ,  Toshihisa Nakai

IPC: H04N712

CPC classification number: H04N19/107 ,  H04N19/139 ,  H04N19/176 ,  H04N19/61

Abstract: Each of consecutively transmitted frames representing motion images is composed of a given number of blocks. A SAD cumulative value representing an image variation history is derived per block. Blocks to be refreshed, i.e. to be intraframe-coded, are selected based on the SAD cumulative values. Specifically, a given number of the blocks whose corresponding SAD cumulative values are larger among all the SAD cumulative values are selected, or those blocks whose corresponding SAD cumulative values are greater than a threshold value are selected. Thus, the blocks which actually require “refresh” can be preferentially refreshed.

Abstract translation: 表示运动图像的连续发送的帧中的每一个由给定数量的块组成。 每个块导出表示图像变化历史的SAD累积值。 基于SAD累积值来选择要刷新的块，即被帧内编码的块。 具体地说，选择所有SAD累积值中对应的SAD累积值较大的给定数量的块，或者选择其对应的SAD累积值大于阈值的那些块。 因此，可以优先刷新实际需要“刷新”的块。

公开(公告)号：US6049570A

公开(公告)日：2000-04-11

申请号：US987774

申请日：1997-12-09

Applicant: Shigeru Fukunaga ,  Toshihisa Nakai

Inventor： Shigeru Fukunaga ,  Toshihisa Nakai

IPC: H04N19/50 ,  G06T9/00 ,  H03M7/36 ,  H04N19/423 ,  H04N19/46 ,  H04N19/503 ,  H04N19/65 ,  H04N19/70 ,  H04N19/85 ,  H04N19/89 ,  H04B14/06

CPC classification number: H04N19/89 ,  H04N19/166 ,  H04N19/172 ,  H04N19/61 ,  H04N19/107

Abstract: A picture coder decodes P frames without having to wait for the next I frame even if a data loss occurs, and ensures quick recovery from degraded picture quality. The picture coder, which controls updating of a reference picture based on a decoding status signal and a frame number sent from a picture decoder, uses an acknowledgment signal (ACK signal) as a decoding status signal. The picture coder has a decoding status determination module 109 which determines that a decoding error has occurred if the acknowledgment signal is not received within a specified time. The picture coder also has a reference frame updating module 110 for use when it is determined that a decoding error has occurred. The reference frame updating module 110 selects from pictures, which were received correctly before the decoding error occurred, one picture for use as the reference picture. This makes it possible for the picture coder to decode P frames without having to wait for the next I frame.

Abstract translation: 图像编码器解码P帧，而不必等待下一个I帧，即使发生数据丢失，并确保从劣化的图像质量快速恢复。 基于解码状态信号和从图像解码器发送的帧号控制参考图像的更新的图像编码器使用确认信号（ACK信号）作为解码状态信号。 图像编码器具有解码状态确定模块109，如果在指定时间内没有接收到确认信号，则确定解码错误已经发生。 图像编码器还具有当确定已经发生解码错误时使用的参考帧更新模块110。 参考帧更新模块110从解码错误发生之前正确接收到的图像中选择一个用作参考图像的图像。 这使得图像编码器可以对P帧进行解码，而不必等待下一个I帧。

公开(公告)号：US20100027520A1

公开(公告)日：2010-02-04

申请号：US12458795

申请日：2009-07-22

Applicant: Taketsugu Yao ,  Toshihisa Nakai ,  Kiyoshi Fukui

Inventor： Taketsugu Yao ,  Toshihisa Nakai ,  Kiyoshi Fukui

IPC: H04W84/02

CPC classification number: H04W12/04 ,  H04L1/1816 ,  H04L1/203 ,  H04W84/12

Abstract: A transmission terminal includes an information generation unit, a transmission unit, a delivery management unit, and a reception unit. The information generation unit generates information that is to be transmitted to a destination reception terminal. The transmission unit transmits information that the information generation unit has generated. The delivery management unit manages transmission of information. The reception unit receives information that the destination reception terminal transmits. Furthermore, the information generation unit generates or receives transmission information that is to be transmitted to the destination reception terminal and generates redundant information for the destination reception terminal to restore the transmission information. The delivery management unit causes the information generation unit to generate, and causes the transmission unit to retransmit, the redundant information when the reception unit has not received a successful reception reply from the destination reception terminal.

Abstract translation: 传输终端包括信息产生单元，传输单元，传送管理单元和接收单元。 信息生成单元生成要发送到目的地接收终端的信息。 发送单元发送信息生成单元生成的信息。 交付管理单元管理信息的传输。 接收单元接收目的地接收终端发送的信息。 此外，信息生成单元生成或接收要发送到目的地接收终端的发送信息，并生成用于目的地接收终端的冗余信息，以恢复发送信息。 当接收单元没有从目的地接收终端接收到成功的接收回复时，传送管理单元使信息生成单元生成并使发送单元重发冗余信息。

公开(公告)号：US06282240B1

公开(公告)日：2001-08-28

申请号：US08922460

申请日：1997-09-03

Applicant: Shigeru Fukunaga ,  Toshihisa Nakai

Inventor： Shigeru Fukunaga ,  Toshihisa Nakai

IPC: H04B166

CPC classification number: H04N21/25808 ,  H04N19/107 ,  H04N19/61 ,  H04N19/89 ,  H04N21/26208 ,  H04N21/2662 ,  H04N21/6377 ,  H04N21/6379 ,  H04N21/658 ,  H04N21/6582 ,  H04N21/816

Abstract: A coder receives from a decoder the reception result of coded data, estimates the reception capability of the decoder and, based on the estimate result, updates accordingly the reference data on which prediction coding is to be based. This enables the reference data to be updated according to the reception capability of each decoder.

Abstract translation: 编码器从解码器接收编码数据的接收结果，估计解码器的接收能力，并且基于估计结果相应地更新基于预测编码的参考数据。 这使得可以根据每个解码器的接收能力来更新参考数据。

公开(公告)号：US6111915A

公开(公告)日：2000-08-29

申请号：US987590

申请日：1997-12-09

Applicant: Shigeru Fukunaga ,  Toshihisa Nakai

Inventor： Shigeru Fukunaga ,  Toshihisa Nakai

IPC: H04N19/50 ,  G06T9/00 ,  H04N19/423 ,  H04N19/426 ,  H04N19/44 ,  H04N19/46 ,  H04N19/503 ,  H04N19/65 ,  H04N19/70 ,  H04N19/89 ,  H04N7/12 ,  H04N11/02 ,  H04N11/04

CPC classification number: H04N19/423 ,  H04N19/61 ,  H04N19/89 ,  H04N19/107

Abstract: A picture decoder decodes P frames without having to wait for a next I frame even if a data loss occurs, and ensures quick recovery from degraded picture quality. The picture decoder sends decoding status information on received coded data to a coder. This makes it possible for the picture coder to perform coding using a frame, successfully decoded by the decoder, as a reference frame. Also, the picture decoder according to the present invention saves in frame memory a frame that is likely to be used as the reference frame, decreasing a probability that received coded data cannot be decoded because there is no reference picture in frame memory and thus increasing coding efficiency. This also keeps the reference frame memory size of the picture decoder to a minimum.

Abstract translation: 即使发生数据丢失，图像解码器解码P帧而不必等待下一个I帧，并且确保从劣化的图像质量快速恢复。 图像解码器将接收到的编码数据的解码状态信息发送到编码器。 这使得图像编码器可以使用由解码器成功解码的帧作为参考帧来执行编码。 此外，根据本发明的图像解码器将可能用作参考帧的帧保存在帧存储器中，降低了由于在帧存储器中没有参考图像而导致接收编码数据不能被解码的概率，从而增加编码 效率。 这也使图像解码器的参考帧存储器大小保持最小。

公开(公告)号：US5164962A

公开(公告)日：1992-11-17

申请号：US697701

申请日：1991-05-09

Applicant: Toshihisa Nakai ,  Noriaki Kondoh

Inventor： Toshihisa Nakai ,  Noriaki Kondoh

IPC: H03H21/00 ,  H04B3/06 ,  H04L25/03

CPC classification number: H04L25/03038

Abstract: An adaptive equalizer in a digital receiver filters differentially encoded data bursts containing known data preceded and followed by user data. A storage means saves and restores filter coefficients and other values so that the known data can be filtered repeatedly. As the known data are repeatedly filtered, a known-data generating means generates different differential encodings of the known data as desired data which are compared with the filtered values to obtain error values for use in updating the filter coefficients. A comparator means selects the encoding that produces the smallest cumulative error. The known data are then filtered once more, using the selected encoding as desired data, after which adaptive filtering of user data continues.

Abstract translation: 数字接收机中的自适应均衡器对包含用户数据之前和之后的已知数据的差分编码数据脉冲串进行滤波。 存储装置保存和恢复滤波器系数和其他值，使得可以重复地过滤已知数据。 当已知数据被重复滤波时，已知数据产生装置将已知数据的不同差分编码生成作为与滤波值进行比较的所需数据，以获得用于更新滤波器系数的误差值。 比较器意味着选择产生最小累积误差的编码。 然后将已知数据再次过滤，使用所选择的编码作为所需数据，之后继续对用户数据进行自适应过滤。

公开(公告)号：US20100225471A1

公开(公告)日：2010-09-09

申请号：US12656489

申请日：2010-02-01

Applicant: Yasutaka Kawamoto ,  Toshihisa Nakai

Inventor： Yasutaka Kawamoto ,  Toshihisa Nakai

IPC: G08B1/08

CPC classification number: H04N7/17318 ,  G06F21/31 ,  G06F2221/2111 ,  H04N21/25841 ,  H04N21/25875 ,  H04N21/472

Abstract: An information providing server obtains user information from a user apparatus. The user information is dependent on a place at which the user was previously located. The information providing server decides, from the user information, whether the user has been present within a permission zone including an information acquisition apparatus, and interconnects the user apparatus and the information acquisition apparatus, directly or indirectly, only if such is the case. Users who were present within the permission zone are able to obtain information acquired by the information acquisition apparatus without going through a preliminary registration procedure, while other users are unable to obtain the acquired information.

Abstract translation: 信息提供服务器从用户装置获取用户信息。 用户信息取决于用户以前位于的位置。 信息提供服务器根据用户信息决定用户是否已经存在于包括信息获取装置的允许区域内，并且直接或间接地将用户装置和信息获取装置直接或间接地互连在一起。 存在于权限区域内的用户能够获取由信息获取装置获取的信息而不经过初步注册过程，而其他用户不能获得所获取的信息。

公开(公告)号：US06489996B1

公开(公告)日：2002-12-03

申请号：US09401276

申请日：1999-09-23

Applicant: Yasuko Matsumura ,  Shigeru Fukunaga ,  Toshihisa Nakai

Inventor： Yasuko Matsumura ,  Shigeru Fukunaga ,  Toshihisa Nakai

IPC: H04N718

CPC classification number: H04N19/895 ,  H04N19/51

Abstract: A moving picture coded by inter-frame coding, with motion compensation, is decoded by an apparatus that stores at least two previously decoded frames, together with information identifying any erroneous parts of the previously decoded frames. The current frame is decoded with reference to a predicted frame assembled from decodable parts of the previous frames. When a motion vector points to a non-decodable part of a previous frame, it is extended farther back to a decodable part of an earlier frame. The extension can be made linearly, or by using previous motion vectors. Picture distortion caused by error propagation is thereby reduced.

Abstract translation: 通过具有运动补偿的帧间编码编码的运动图像由存储至少两个先前解码的帧的装置以及识别先前解码的帧的任何错误部分的信息来解码。 参考从先前帧的可解码部分组装的预测帧对当前帧进行解码。 当运动矢量指向前一帧的不可解码部分时，它将被延伸回更早的帧的可解码部分。 扩展可以线性化，也可以使用先前的运动矢量。 从而减少由误差传播引起的图像失真。