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    • 1. 发明申请
    • IMAGE DECRYPTION APPARATUS
    • 图像分解装置
    • US20090245512A1
    • 2009-10-01
    • US12407893
    • 2009-03-20
    • Motoo MASUITaizo ANANKensuke KURAKIJun TAKAHASHIShohei NAKAGATA
    • Motoo MASUITaizo ANANKensuke KURAKIJun TAKAHASHIShohei NAKAGATA
    • H04L9/06
    • G09C5/00
    • A display processor displays on a display screen an encrypted image accepted by an image data acceptor. An encrypted region acquirer extracts encrypted regions contained on the encrypted image. A target region selector or an authorized target region selector selects decryption target regions from among encrypted regions contained in the encrypted image. A decryption order determiner determines a decryption order of the decryption target regions. The display processor displays on the display screen a prompt for inputting a decryption key (or a password) used for decryption of the encrypted image in each of the decryption target regions in accordance with the decryption order. A decryption key acceptor accepts the decryption key input by a decryption user. An image decryptor performs a decryption process on the encrypted image in the decryption target regions in accordance with the decryption order. A decrypted image of each decryption target region is output.
    • 显示处理器在显示屏幕上显示由图像数据接收器接受的加密图像。 加密区域获取器提取加密图像中包含的加密区域。 目标区域选择器或授权目标区域选择器从包含在加密图像中的加密区域中选择解密目标区域。 解密顺序确定器确定解密目标区域的解密顺序。 显示处理器根据解密顺序在显示屏幕上显示用于输入用于解密每个解密目标区域中的加密图像的解密密钥(或密码)的提示。 解密密钥接受者接受解密用户输入的解密密钥。 图像解密器根据解密顺序对解密目标区域中的加密图像执行解密处理。 输出每个解密对象区域的解密图像。
    • 2. 发明申请
    • IMAGE ENCRYPTION APPARATUS AND IMAGE DECRYPTION APPARATUS
    • 图像加密装置和图像分解装置
    • US20090245511A1
    • 2009-10-01
    • US12407119
    • 2009-03-19
    • Shohei NAKAGATATaizo ANANKensuke KURAKIJun TAKAHASHI
    • Shohei NAKAGATATaizo ANANKensuke KURAKIJun TAKAHASHI
    • H04L9/00
    • H04N1/44H04N1/4486
    • In an image encryption apparatus, each of pixel-value inverse-converters applies pixel-value inverse-conversion on an input image in each of previously-encrypted areas. An image combiner superimposes images with inversely-converted pixels in the previously-encrypted areas to the input image to obtain a ready-to-encrypt image. An image encryptor scrambles blocks in the ready-to-encrypt image. A pixel-value converter applies pixel-value conversion on each of scrambled blocks to obtain a multiply-encrypted image. In an image decryption apparatus, a pixel-value inverse-converter applies pixel-value inverse-conversion on each scrambled block in the multiply-encrypted image to obtain a dot-erased image. An image decryptor inversely scrambles the scrambled blocks in the dot-erased image to obtain a decrypted image. Each of pixel-value converters applies pixel-value conversion on the decrypted image in each of previously-encrypted areas. An image combiner superimposes images with converted pixels in the previously-encrypted areas to the decrypted image to obtain a previously-encrypted image.
    • 在图像加密装置中,每个像素值逆变换器对每个先前加密的区域中的输入图像应用像素值逆变换。 图像组合器将先前加密的区域中的逆转换像素的图像叠加到输入图像,以获得准备加密的图像。 图像加密器对准加密图像中的块进行加扰。 像素值转换器对每个加扰块应用像素值转换以获得加密图像。 在图像解密装置中,像素值逆变换器对乘法加密图像中的每个加扰块应用像素值逆变换以获得点删除图像。 图像解密器对点擦除图像中的加扰块进行反相扰频,以获得解密的图像。 每个像素值转换器对每个先前加密的区域中的解密图像应用像素值转换。 图像组合器将先前加密区域中的转换像素的图像与解密图像叠加,以获得预先加密的图像。
    • 3. 发明申请
    • IMAGE ENCRYPTION DEVICE, IMAGE DECRYPTION DEVICE AND METHODS
    • 图像加密设备,图像分解设备和方法
    • US20110280395A1
    • 2011-11-17
    • US13088742
    • 2011-04-18
    • Shohei NAKAGATATaizo ANANKensuke KURAKIJun TAKAHASHI
    • Shohei NAKAGATATaizo ANANKensuke KURAKIJun TAKAHASHI
    • H04L9/28
    • H04N1/448G09C1/04
    • Constraints are added to the size of an encryption area at the time of encryption processing. For example, if the respective number of horizontal and vertical divided blocks is divided by a predetermined positive integer, the size of the encryption area is limited such that the remaining is a certain number of 0 (namely, a multiple of the predetermined positive integer to the respective number of blocks) or 1 or more. Block positions in the encryption area are detected according to the constraints of the number of blocks of an encryption image as the decryption processing corresponding to the encryption processing. Because the number of horizontal and vertical blocks is previously limited at the time of the encryption, the possibility of the number of blocks to be considered in the detection of the block positions is reduced, resulting in improved decryption accuracy.
    • 限制在加密处理时被加到加密区的大小上。 例如,如果相应数量的水平和垂直分割块被预定的正整数除以,则加密区域的大小被限制,使得剩余部分是一定数量的0(即,预定的正整数到 相应的块数)或1个或更多个。 根据加密图像的块的数量的约束来检测加密区域中的块位置作为与加密处理相对应的解密处理。 由于在加密时预先限制了水平和垂直块的数量,所以在检测块位置时要考虑块的数量的可能性减小,从而提高了解密精度。
    • 5. 发明申请
    • MOVING PICTURE DECODING INTEGRATED CIRCUIT
    • 移动图像解码集成电路
    • US20080279280A1
    • 2008-11-13
    • US12047897
    • 2008-03-13
    • Masayasu IGUCHIJun TAKAHASHI
    • Masayasu IGUCHIJun TAKAHASHI
    • H04N7/26
    • H04N19/433H04N19/44H04N19/61
    • A moving picture decoding device includes a cache memory for storing a reference picture, in addition to a multi-frame memory (external memory) for storing reference pixel data of a plurality of reference pictures, for processing of a HD image size large in angle of view. A reference structure analyzer analyzes the reference structure of pictures. A reference picture manager not only writes a reference picture high in the possibility of being referred to by an object picture to be decoded in the multi-frame memory but also stores such a reference picture in the cache memory, using the analysis results of the picture reference structure. This minimizes the capacity of the cache memory and also reduces the data transfer amount from the external memory.
    • 除了用于存储多个参考图像的参考像素数据的多帧存储器(外部存储器)之外,运动图像解码装置还包括用于存储参考图像的高速缓存存储器,用于处理大角度的HD图像大小 视图。 参考结构分析仪分析图片的参考结构。 参考图像管理器不仅将参考图像高写入可被多帧存储器中要解码的对象图像参考的可能性,而且还使用图像的分析结果将这样的参考图像存储在高速缓冲存储器中 参考结构。 这使得高速缓冲存储器的容量最小化并且还减少了来自外部存储器的数据传送量。
    • 6. 发明申请
    • IMAGE PROCESSOR, STORED DOCUMENT MANAGEMENT METHOD, AND STORED DOCUMENT MANAGEMENT SYSTEM
    • 图像处理器,存储文档管理方法和存储文档管理系统
    • US20090106188A1
    • 2009-04-23
    • US12255179
    • 2008-10-21
    • Jun TAKAHASHI
    • Jun TAKAHASHI
    • G06F17/30
    • G06F16/93
    • An image processor includes a document name list acquisition unit, a document name list storage device, a document acquisition unit, and a document name assignment unit. The document name list acquisition unit acquires information of a document name list including a document name of each of a plurality of documents to be stored in the image processor. The document name list storage device stores the information of the document name list. The document acquisition unit acquires information of the plurality of documents. The document name assignment unit acquires the document name corresponding to each of the plurality of documents from the information of the document name list stored in the document name list storage device and assigns the document name to each of the plurality of documents.
    • 图像处理器包括文件名称列表获取单元,文档名称列表存储设备,文档获取单元和文档名称分配单元。 文件名称列表获取单元获取包括要存储在图像处理器中的多个文档中的每一个的文档名称的文档名称列表的信息。 文档名称列表存储装置存储文档名称列表的信息。 文档获取单元获取多个文档的信息。 文件名称分配单元从存储在文件名单列表存储装置中的文件名称列表的信息中获取与多个文档中的每一个相对应的文档名称,并将文档名称分配给多个文档中的每一个。