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1. 发明授权

US5959883A Recording and playback integrated system for analog non-volatile flash memory 失效
标题翻译：用于模拟非易失性闪存的记录和回放集成系统
公开(公告)号：US5959883A
公开(公告)日：1999-09-28
申请号：US4798
申请日：1998-01-09
申请人： James Brennan, Jr. , Anthony Dunne , Peter Holzmann , Geoff Jackson , Albert Kordesch , Chun-Mai Liu , Kung-Yen Su , Hieu Van Tran
发明人： James Brennan, Jr. , Anthony Dunne , Peter Holzmann , Geoff Jackson , Albert Kordesch , Chun-Mai Liu , Kung-Yen Su , Hieu Van Tran
IPC分类号： G11C16/02 , G11C11/56 , G11C16/10 , G11C27/00 , G11C11/34
CPC分类号： G11C16/10 , G11C11/5621 , G11C11/5628 , G11C27/005 , G11C16/30 , G11C2207/16 , G11C2211/5623
摘要： An analog recording and playback system using non-volatile flash memory. An array of flash memory cells is used to store an analog signal and retrieve the stored analog signal on a real-time basis. A plurality of column driver circuits are coupled to the columns of flash memory cells for simultaneous programming and reading. A programming algorithm is used to write the analog signal within an operating range of the flash memory cells since the operating range may shift due to process variations. The system includes trimbit circuits to provide a trimmable initial programming voltage, programming step, programming current, read current, and select gate voltage. The system further includes a Serial Peripheral Interface ("SPI") that interfaces with a host microcontroller. The host microcontroller can send a number of commands to the system through the SPI for efficient message management. These commands include the basic commands to record or playback and various addressing and message cueing options. The system utilizes row and column redundancy to increase production yield.
摘要翻译：使用非易失性闪存的模拟录音和播放系统。闪存单元阵列用于存储模拟信号，并实时检索存储的模拟信号。多个列驱动器电路耦合到闪存单元的列，用于同时编程和读取。使用编程算法将模拟信号写入闪存单元的工作范围内，因为工作范围可能由于工艺变化而偏移。该系统包括三角电路，以提供可调整的初始编程电压，编程步骤，编程电流，读取电流和选择栅极电压。该系统还包括与主机微控制器连接的串行外设接口（“SPI”）。主机微控制器可以通过SPI向系统发送多个命令，以实现高效的消息管理。这些命令包括记录或回放的基本命令以及各种寻址和消息提示选项。该系统利用行和列冗余来提高产量。

2. 发明授权

US5999186A Reference based parametric dimensioning method and system 失效
标题翻译：基于参考的参数化方法和系统
公开(公告)号：US5999186A
公开(公告)日：1999-12-07
申请号：US862608
申请日：1997-05-23
申请人： Geoff Jackson
发明人： Geoff Jackson
IPC分类号： G06F17/50 , G06T19/00 , G06F15/00
CPC分类号： G06T19/20 , G06T2219/012 , G06T2219/2021
摘要： The described CAD system enables a drafter to easily enter dimension entities, which describe the physical dimensions of an object in a CAD drawing or model. The dimension entities define either linear, angular, or radial dimensions, and for each dimension entity, the user defines a reference origin in addition to the normal dimensional information. The value of each defined dimension entity may be a simple constant, a parameter, or an expression of multiple constants and parameters. By virtue of the added reference origin, a very complex network of related dimension entities can be simply defined and easily modified. The recalculation of the dimension entities is performed by a parametric dimensioning engine that transforms groups of entities from the global space of the general CAD drawing or model into a local space. While in local space, the parametric dimensioning recalculates the coordinate data of the entities.
摘要翻译：所描述的CAD系统使得起草者能够容易地输入尺寸实体，其描述CAD绘图或模型中对象的物理尺寸。尺寸实体定义线性，角度或径向尺寸，并且对于每个维度实体，除了正常尺寸信息之外，用户定义参考原点。每个定义的维度实体的值可以是简单常量，参数或多个常量和参数的表达式。凭借增加的引用来源，可以简单地定义和容易地修改相关维度实体的非常复杂的网络。尺寸实体的重新计算由参数化尺寸引擎执行，该引擎将实体组从通用CAD绘图或模型的全局空间转换为局部空间。在本地空间中，参数化尺寸重新计算实体的坐标数据。

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