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1. 发明授权

US5872530A Method of and apparatus for compressing and decompressing data and data processing apparatus and network system using the same 失效
标题翻译：用于压缩和解压缩数据和数据处理装置的方法和装置以及使用其的网络系统
公开(公告)号：US5872530A
公开(公告)日：1999-02-16
申请号：US790063
申请日：1997-01-28
申请人： Seiichi Domyo , Hiroshi Yoshiura , Yoshiaki Hattori , Yutaka Otsu , Hiromasa Murakami
发明人： Seiichi Domyo , Hiroshi Yoshiura , Yoshiaki Hattori , Yutaka Otsu , Hiromasa Murakami
IPC分类号： H03M7/40 , G06F5/00 , H03M7/30 , H03M7/00
CPC分类号： H03M7/3088
摘要： In a data compression method using dictionaries, there are adopted a dynamic dictionary and a static dictionary to prevent the deterioration in the data compression ratio in the leading portion of the input data which cannot be efficiently compressed using the dynamic dictionary. Moreover, the configuration removes the disadvantage of the deterioration in the data compression ratio because character strings having a low appearance frequency occupy a large portion of the dictionary. Data to be compressed is inputted via an input unit to be decomposed into input bit strings 202. Using the input bit string as a retrieval key, a bit string retrieval is conducted through the static dictionary by a decision unit and a reference unit. According to a result from comparison between the input bit string and a bit string of the static dictionary and a result from the retrieval by a retrieving unit through the dynamic dictionary, whether or not the input bit string is to be registered to the dynamic dictionary is determined. For registration of the input bit string, an index is added thereto by a register unit before the registration. The input bit string or an index matching the string is outputted as compressed data.
摘要翻译：在使用字典的数据压缩方法中，采用动态字典和静态字典，以防止使用动态字典无法有效压缩的输入数据的前导部分中的数据压缩比的恶化。此外，由于具有低出现频率的字符串占据了字典的大部分，因此该配置消除了数据压缩率恶化的缺点。要被压缩的数据经由输入单元输入以被分解为输入位串202.使用输入位串作为检索关键字，通过决定单元和参考单元通过静态字典进行位串检索。根据输入比特串与静态词典的比特串之间的比较结果，以及通过动态词典由检索单元检索的结果，输入比特串是否要注册到动态词典是决心。为了注册输入位串，在注册之前，通过寄存器单元向其添加索引。输入位串或匹配字符串的索引作为压缩数据输出。

2. 发明授权

US06411714B1 Data decompression/decryption method and system 失效
标题翻译：数据解压缩/解密方法和系统
公开(公告)号：US06411714B1
公开(公告)日：2002-06-25
申请号：US09645605
申请日：2000-08-25
申请人： Hiroshi Yoshiura , Kazuo Takaragi , Yusuke Hino , Yutaka Otsu
发明人： Hiroshi Yoshiura , Kazuo Takaragi , Yusuke Hino , Yutaka Otsu
IPC分类号： H04L906
CPC分类号： G11B20/0021 , G11B20/00007 , G11B20/00086
摘要： An information processing system including a data input means (203, 208, 217, 219) for inputting or receiving data, a data compressing means (206) for compressing the data, a decompressing means (221) for decompressing the compressed data and a main storage (209, 222) is provided with an encrypting means (207) for encrypting the data and a decrypting means (220) for decrypting the encrypted data. In execution of a compression/encryption step in which the compressing means (206) and the encrypting means (207) perform compression and encryption for a part of the data and a decryption/decompression step in which the decompressing means (221) and the decrypting means (220) perform decompression and decryption for a part of the compressed and encrypted data, amounts of series of data processed in the compression/encryption and decryption/decompression steps are so set that a memory capacity required for executing the processings does not exceed capacity of the main storage, wherein the compression/encryption and decryption/decompression steps are repeated more than once inclusive.
摘要翻译：一种信息处理系统，包括用于输入或接收数据的数据输入装置（203,208,217,219），用于压缩数据的数据压缩装置（206），用于解压缩压缩数据的解压缩装置（221）存储器（209,222）设置有用于加密数据的加密装置（207）和用于解密加密数据的解密装置（220）。在执行压缩/加密步骤，其中压缩装置（206）和加密装置（207）对一部分数据执行压缩和加密，以及解密/解压缩步骤，其中解压缩装置（221）和解密装置（220）对压缩和加密数据的一部分执行解压缩和解密，在压缩/加密和解密/解压缩步骤中处理的一系列数据的数量被设置为使得执行处理所需的存储器容量不超过容量的主存储器，其中压缩/加密和解密/解压缩步骤不止一次地重复。

3. 发明授权

US6122378A Data compression/encryption method and system 失效
标题翻译：数据压缩/加密方法和系统
公开(公告)号：US6122378A
公开(公告)日：2000-09-19
申请号：US29547
申请日：1998-03-05
申请人： Hiroshi Yoshiura , Kazuo Takaragi , Yusuke Hino , Yutaka Otsu
发明人： Hiroshi Yoshiura , Kazuo Takaragi , Yusuke Hino , Yutaka Otsu
IPC分类号： G11B20/00 , H03M7/40 , H04N1/44
CPC分类号： G11B20/0021 , G11B20/00007 , G11B20/00086 , H03M7/40
摘要： An information processing system including a data input means (203, 208, 217, 219) for inputting or receiving data, a data compressing means (206) for compressing the data, a decompressing means (221) for decompressing the compressed data and a main storage (209, 222) is provided with an encrypting means (207) for encrypting the data and a decrypting means (220) for decrypting the encrypted data. In execution of a compression/encryption step in which the compressing means (206) and the encrypting means (207) perform compression and encryption for a part of the data and a decryption/decompression step in which the decompressing means (221) and the decrypting means (220) perform decompression and decryption for a part of the compressed and encrypted data, amounts of series of data processed in the compression/encryption and decryption/decompression steps are so set that a memory capacity required for executing the processings does not exceed capacity of the main storage, wherein the compression/encryption and decryption/decompression steps are repeated more than once inclusive.
摘要翻译： PCT No.PCT / JP95 / 01815 Sec。 371日期：1998年3月5日 102（e）1998年3月5日PCT PCT 1995年9月13日PCT公布。公开号WO97 / 10659 日期1997年3月20日包括用于输入或接收数据的数据输入装置（203,208,217,219）的信息处理系统，用于压缩数据的数据压缩装置（206），用于解压缩数据的解压缩装置压缩数据和主存储器（209,222）设置有用于加密数据的加密装置（207）和用于解密加密数据的解密装置（220）。在执行压缩/加密步骤，其中压缩装置（206）和加密装置（207）对一部分数据执行压缩和加密，以及解密/解压缩步骤，其中解压缩装置（221）和解密装置（220）对压缩和加密数据的一部分执行解压缩和解密，在压缩/加密和解密/解压缩步骤中处理的一系列数据的数量被设置为使得执行处理所需的存储器容量不超过容量的主存储器，其中压缩/加密和解密/解压缩步骤不止一次地重复。

4. 发明授权

US5854841A Communication system 失效
标题翻译：通讯系统
公开(公告)号：US5854841A
公开(公告)日：1998-12-29
申请号：US755594
申请日：1996-11-25
申请人： Yukio Nakata , Susumu Matsui , Yasuhiro Takahashi , Takeshi Kondou , Yutaka Otsu
发明人： Yukio Nakata , Susumu Matsui , Yasuhiro Takahashi , Takeshi Kondou , Yutaka Otsu
IPC分类号： G06F13/00 , H03M7/30 , H04B14/04 , H04L9/10 , H04L29/06 , H04L9/00
CPC分类号： H04L29/06 , H04L69/04
摘要： Data is compressed/encrypted for communication between application programs without addition of any modification to the application programs. In a communication system where a plurality of personal computers are connected to each other using communication lines, a personal computer is provided with a communication program and an application program, the application program uses a command offered by the communication program for transmission and reception of data with another personal computer, a hooking program for discriminating the command related to the data communication issued by the application program is provided and, after the hooking program has compressed or encrypted the data of application program depending on a type of the command, the command is transferred to the communication program.
摘要翻译：数据被压缩/加密用于应用程序之间的通信，而不需要对应用程序进行任何修改。在使用通信线路将多个个人计算机彼此连接的通信系统中，个人计算机设置有通信程序和应用程序，应用程序使用由通信程序提供的命令来发送和接收数据在另一个人计算机中，提供用于区分由应用程序发出的与数据通信有关的命令的挂钩程序，并且在挂钩程序根据命令的类型对应用程序的数据进行压缩或加密之后，命令是转移到通信程序。

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