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    • 6. 发明授权
    • External information storage system with a semiconductor memory
    • 具有半导体存储器的外部信息存储系统
    • US5524230A
    • 1996-06-04
    • US410589
    • 1995-03-27
    • Yoshinori SakaueHideto Niijima
    • Yoshinori SakaueHideto Niijima
    • G06F3/08G06F3/06G06F12/00G06F12/02G06F12/08G06F12/12G11C16/02G11C16/10G11C16/34G11C17/00G06F12/10
    • G06F3/0601G06F12/0866G06F12/122G06F2003/0694G06F2212/2022G06F2212/312G11C16/102G11C16/349
    • To provide an external storage system using a semiconductor memory in which the data reading and writing between the host CPU can be processed faster than the conventional magnetic disk, and only a particular sector is not frequently written and erased so that the whole memory is effectively used over a long period of time. An address control scheme was introduced in which flexibility is given to the address relation between the host CPU and the external storage and the physical address of the semiconductor memory is not one-sidedly determined by the logical address possessed by the command of the host CPU. Command processing section 34 always prepares memory blocks and sectors for writing or erasing and copying in preparation for the command processing of the host CPU, and records and holds the correspondence relation between the physical address of the selected memory block 32i or sector and the command of the host CPU in address conversion table 36. The status of memory blocks and sectors is recorded in respective managing tables 35 and 60, and used for control of processings such as writing, erasing and copying in preparation for or in response to the command of the host CPU.
    • 为了提供使用半导体存储器的外部存储系统,其中可以比常规磁盘更快地处理主机CPU之间的数据读取和写入,并且只有特定扇区不被频繁地写入和擦除,使得整个存储器被有效地使用 在很长一段时间内。 引入了一种地址控制方案,其中主机CPU和外部存储器之间的地址关系具有灵活性,并且半导体存储器的物理地址不是由主机CPU的命令所拥有的逻辑地址单方面确定的。 命令处理部34总是准备用于写入或擦除和复制的存储块和扇区,以准备主机CPU的命令处理,并且记录并保持所选择的存储器块32i或扇区的物理地址与命令 地址转换表36中的主机CPU。存储器块和扇区的状态被记录在相应的管理表35和60中,并且用于控制诸如写入,擦除和复制的处理,以准备或响应于 主机CPU。
    • 8. 发明授权
    • Method of fabricating three-dimensional direct-write EEPROM arrays
    • 制造三维直写EEPROM阵列的方法
    • US5468663A
    • 1995-11-21
    • US405128
    • 1995-03-16
    • Claude L. BertinDonelli J. DiMariaMakoto MiyakawaYoshinori Sakaue
    • Claude L. BertinDonelli J. DiMariaMakoto MiyakawaYoshinori Sakaue
    • H01L21/8247H01L27/115H01L29/788H01L29/792
    • H01L27/11556H01L27/115H01L29/7882
    • A three-dimensional memory cell, suitable for electrically erasable programmable read only memories (EEPROMS), which has direct-write cell capability is disclosed. The memory cell is utilized in the fabrication of non-volatile, direct-write EEPROM arrays with high integration density. A typical EEPROM array includes a plurality of elongated shallow trenches formed in a semiconductor substrate. Multiple direct-write EEPROM cells are disposed within each elongated trench such that each EEPROM cell shares a recall gate and a program gate with another cell in the same trench. Preferably, a silicon rich dielectric (such as silicon rich oxide) disposed between each floating gate and its associated programming and recall gates. Both common source diffusion and isolated source diffusion embodiments are disclosed. Further, various fabrication methods for the direct-write EEPROM arrays presented are described.
    • 公开了一种适用于具有直写单元能力的电可擦除可编程只读存储器(EEPROMS)的三维存储单元。 存储单元用于制造具有高集成度密度的非易失性直写EEPROM阵列。 典型的EEPROM阵列包括形成在半导体衬底中的多个细长的浅沟槽。 多个直写EEPROM单元被布置在每个细长沟槽内,使得每个EEPROM单元与相同沟槽中的另一个单元共享回调门和编程门。 优选地,设置在每个浮动栅极与其相关联的编程和调用栅极之间的富硅电介质(例如富氧氧化物)。 公开了源极扩散和隔离源扩散实施例。 此外,描述了所呈现的用于直写EEPROM阵列的各种制造方法。
    • 9. 发明授权
    • Method and apparatus for dynamically creating conversion tables to
access a semiconductor memory device
    • 用于动态地创建用于访问半导体存储器件的转换表的方法和装置
    • US5963983A
    • 1999-10-05
    • US842554
    • 1997-04-15
    • Tohru SakakuraYoshinori Sakaue
    • Tohru SakakuraYoshinori Sakaue
    • G06F3/06G06F3/08G06F12/00G06F12/02
    • G06F12/0246G06F12/0292G06F3/0607G06F3/0661G06F3/0679G06F2212/7201
    • An improved external semiconductor memory device having a work memory for storing logical address-physical address conversion information. According to one embodiment of the present invention, a semiconductor memory device, which is connected to a host computer system and can be addressed as predetermined sector units, comprises: (a) a data storage having a nonvolatile memory that can be electrically rewritten; (b) an interface connected to the host computer system for receiving an access request; (c) volatile work memory; (d) first table preparating means for preparing a first table in the volatile work memory, by the page which consists of a plurality of sectors, for converting the requested logical sector address into a physical sector address among a physical memory space of the data storage; (e) second table preparation means for preparing a second table in the volatile work memory, by the unit which consists of a plurality of pages, for converting a logical page numbers addressed by the access request into a physical page numbers among a physical memory space of the data storage; (f) second access control means for, in response to an access request from the host computer system, referring to the second table for a unit to which the designated logical sector address belongs in order to acquire a corresponding physical page number; (g) first access control means for, in response to an access request from the host computer system, referring to the first table for a physical page to which the designated logical sector address belongs in order to acquire a corresponding physical sector address; and (h) data access means for accessing the data storage in accordance with the acquired physical sector address.
    • 一种改进的外部半导体存储器件,具有存储逻辑地址 - 物理地址转换信息的工作存储器。 根据本发明的一个实施例,连接到主计算机系统并且可以被寻址为预定扇区单元的半导体存储器件包括:(a)具有可被电重写的非易失性存储器的数据存储器; (b)连接到主计算机系统的用于接收访问请求的接口; (c)挥发性工作记忆; (d)用于通过由多个扇区组成的页面来准备易失性工作存储器中的第一表的第一表准备装置,用于将所请求的逻辑扇区地址转换成数据存储器的物理存储器空间中的物理扇区地址 ; (e)第二表准备装置,用于通过由多个页组成的单元来准备易失性工作存储器中的第二表,用于将由访问请求寻址的逻辑页码转换成物理存储空间中的物理页码 的数据存储; (f)第二访问控制装置,用于响应于来自所述主计算机系统的访问请求,参考所述指定逻辑扇区地址所属的单元的第二表,以便获取对应的物理页码; (g)第一访问控制装置,用于响应于来自主计算机系统的访问请求,参考第一表,指定逻辑扇区地址所属的物理页,以便获取对应的物理扇区地址; 和(h)用于根据获取的物理扇区地址访问数据存储器的数据访问装置。