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1. 发明授权

US07516254B2 Memory control apparatus 失效
标题翻译：存储器控制装置
公开(公告)号：US07516254B2
公开(公告)日：2009-04-07
申请号：US11470742
申请日：2006-09-07
申请人： Hidenori Nanki , Yoshiteru Mino , Keizo Sumida
发明人： Hidenori Nanki , Yoshiteru Mino , Keizo Sumida
IPC分类号： G06F5/00 , G06F13/28
CPC分类号： G06F13/1631
摘要： A memory control apparatus is capable of surely becoming consistent with an external memory while avoiding a deterioration in access efficiency to the external memory. The memory control apparatus includes: a data buffer and an address buffer which respectively store data and addresses related to past access requests from a first master; a first comparison unit which compares a new address with the address of the address buffer upon receiving the new address; a buffer control unit which performs one of issuing an access request to an external memory I/F or outputting the data in the data buffer to the first master, depending on the comparison result; a specific access detection unit which disables the contents of the data buffer irrespective of the comparison result.
摘要翻译：存储器控制装置能够确保与外部存储器一致，同时避免对外部存储器的访问效率的劣化。存储器控制装置包括：数据缓冲器和地址缓冲器，其分别存储与来自第一主机的过去访问请求相关的数据和地址; 第一比较单元，其在接收到新地址时将新地址与地址缓冲器的地址进行比较; 缓冲器控制单元，其根据比较结果执行向外部存储器I / F发出访问请求或将数据缓冲器中的数据输出到第一主机的一个; 特定访问检测单元，其与比较结果无关地禁用数据缓冲器的内容。

2. 发明授权

US07523279B2 Information processing apparatus for accessing memory spaces including a user memory space and a secure memory space 有权
标题翻译：用于访问包括用户存储空间和安全存储器空间的存储空间的信息处理装置
公开(公告)号：US07523279B2
公开(公告)日：2009-04-21
申请号：US10764513
申请日：2004-01-27
申请人： Hidenori Nanki , Shiro Yoshioka , Kenichi Kawaguchi , Toshiya Kai , Shinichiro Fukai
发明人： Hidenori Nanki , Shiro Yoshioka , Kenichi Kawaguchi , Toshiya Kai , Shinichiro Fukai
IPC分类号： G06F12/14
CPC分类号： G06F12/1458 , G06F12/1433
摘要： An information processing apparatus comprising a secure information unit that is set to the state not requiring security in the case where the data is transferred from a user memory space to a general purpose register, and that is set to the state requiring security in the case where the data is transferred from a secure memory space to the general purpose register. An encryption key in the secure memory space is prevented from being stolen by prohibiting the data transfer to the user memory space from the general purpose register with the value of the secure information unit set to the state requiring security.
摘要翻译：一种信息处理设备，包括安全信息单元，其被设置为在数据从用户存储器空间传送到通用寄存器的情况下不需要安全性的状态，并且被设置为在需要安全性的情况下数据从安全存储器空间传送到通用寄存器。通过禁止将数据从通用寄存器传送到用户存储空间，防止安全存储器空间中的加密密钥被设置为需要安全性的状态的安全信息单元的值。

3. 发明授权

US07130952B2 Data transmit method and data transmit apparatus 有权
标题翻译：数据发送方式和数据发送装置
公开(公告)号：US07130952B2
公开(公告)日：2006-10-31
申请号：US10765993
申请日：2004-01-29
申请人： Hidenori Nanki , Kenichi Kawaguchi
发明人： Hidenori Nanki , Kenichi Kawaguchi
IPC分类号： G06F13/40 , G06F13/12 , G06F13/16
CPC分类号： H03M7/04 , G11B20/10527 , G11B2020/10546 , G11B2020/10759
摘要： In an arrangement in which a CPU transmits data such as audio data through a 32-bit data bus, a format conversion device and a format conversion program are a are newly prepared. Further, input data having a first bit-width (32 bit width) is converted to output data having a second bit-width (24 bit width) in accordance with a predetermined system so that the efficiency of use of the bus at the time of transmitting data is improved; thus, it becomes possible to reduce a data memory area required for multi-media processes.
摘要翻译：在CPU通过32位数据总线发送诸如音频数据的数据的布置中，新准备了格式转换装置和格式转换程序。此外，具有第一位宽（32位宽）的输入数据根据预定系统被转换为具有第二位宽（24位宽）的输出数据，从而使得总线的使用效率在传输数据得到改善; 因此，可以减少多媒体处理所需的数据存储区域。

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