Study on an associative memory system with a new analog memory device

新型模拟存储器件联想存储系统的研究

• 批准号: 09555106
• 负责人: NAKAJIMA Koji
• 金额: $ 8.26万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09555106/
• 关键词: nonvolatile analog memory; content-addressable memory; recognition; SDAM; analog technology

For the purpose of realizing a new intelligent system and its simplified VLSI implementation, we propose a new nonvolatile analog memory called "switched diffusion analog memory with feedback circuit (FBSDAM)". FBSDAM has linear writing and erasing characteristics. Therefore, FBSDAM is useful for memorizing an analog value exactly.We also propose a new analog content-addressable memory (CAM) which has neural-like learning and discriminating functions which discriminate whether an incoming pattern is an unknown pattern or a stored pattern.We design and fabricate the CAM using FBSDAM by means of the 4\(\mu\)m double-poly single-metal CMOS process and nonvolatile analog memory technology which are developed by us. The chip size is 3.1mm x 3.1mm.We estimate that the CAM is composed of 50 times fewer transistors and requires 70 times fewer calculation steps than a typical digital computer implemented using similar technology.

为了实现一种新的智能系统及其简化的VLSI实现，我们提出了一种新的非易失性模拟存储器，称为带反馈电路的开关扩散模拟存储器(FBSDAM)。FBSDAM具有线性写入和擦除特性。我们还提出了一种新型的模拟内容寻址存储器(CAM)，它具有类神经学习和识别功能，可以区分输入模式是未知模式还是已存储模式。我们利用我们开发的4mum双层多晶单金属CMOS工艺和非易失性模拟存储器技术，设计并制作了FBSDAM模拟内容寻址存储器。芯片尺寸为3.1 mm×3.1 mm。我们估计，与使用类似技术实现的典型数字计算机相比，该CAM由50倍的晶体管组成，所需的计算步骤减少70倍。

项目成果

Koji NAKAJIMA et,al: "Hardware integration for neural networks in RIEC Tohoku University" Proc.of 1998 Int.Conf.on Computers, Communications and Systems. 5-14 (1998)

Koji NAKAJIMA 等人：“RIEC 东北大学神经网络的硬件集成”Proc.of 1998 Int.Conf.on 计算机、通信和系统。

Hidetoshi TANAKA et,al: "Integrated circuits of map chaos generators" IEICE Trans. Fundamentals.E82-A・2. 364-369 (1999)

Hidetoshi TANAKA 等人：“地图混沌发生器的集成电路”IEICE Trans.E82-A・2（1999）。

Takeshi ONOMI et,al: "Phase-mode circuits for high-performance logic" IEICE Trans.Electron.E81-C・10. 1608-1617 (1998)

Takeshi ONOMI 等人：“高性能逻辑的相模式电路”IEICE Trans.Electron.E81-C·10 (1998)。

Takeshi ONOMI et,al: "Design and fabrication of an adder circuit in the extended phase-mode logic" IEEE Trans.on Applied Superconductivity. 7・2. 3172-3175 (1997)

Takeshi ONOMI 等人：“扩展相模式逻辑中的加法器电路的设计和制造”IEEE Trans.on Applied Superconductivity 7・2 (1997)。

T.Harada, S.Sato, K.Nakajima: "A content-addressable memory using 'Switched Diffusion Analog Mmeory with Feedback Circuit'" IEICE Trans.Fundamentals. E82-A,2. 370-377 (1999)

T.Harada、S.Sato、K.Nakajima：“使用‘带反馈电路的开关扩散模拟存储器’的内容可寻址存储器”IEICE Trans.Fundamentals。