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1. 发明授权

US5090029A Data communication method and apparatus 失效
标题翻译：数据通信方法和设备
公开(公告)号：US5090029A
公开(公告)日：1992-02-18
申请号：US345580
申请日：1989-05-01
申请人： Toshifumi Yamamoto , Mitsuro Takakura , Hiromasa Yamaoka , Masakazu Okada
发明人： Toshifumi Yamamoto , Mitsuro Takakura , Hiromasa Yamaoka , Masakazu Okada
IPC分类号： H04L12/43
CPC分类号： H04L12/43
摘要： A method and apparatus for transmission of data among computers or peripherals along a loop transmission line includes a master system which provides signals along the transmission line for establishing a series of data frames of equivalent length. Each data frame is assigned a frame number, and is allotted a preselected amount of available space for placement of data. Subsequent computers or peripherals are preprogramed with a series of frame numbers which identify those data frames into which they may write data, or from which data is to be read. The allotment of preselected frame numbers for placement and reception of data by the respective devices provides for equivalent sharing of the available data transmission capability of the loop transmission system.
摘要翻译：沿着环路传输线在计算机或外围设备之间传输数据的方法和装置包括：主系统，其沿着传输线提供信号，以建立一系列具有等效长度的数据帧。每个数据帧都被分配一个帧号，并且分配预置的可用空间量用于放置数据。随后的计算机或外围设备用一系列帧号进行预编程，这些帧号码标识他们可以写入数据的数据帧，或从哪个数据读取数据帧。由各个设备分配用于放置和接收数据的预选帧号提供了循环传输系统的可用数据传输能力的等效共享。

2. 发明授权

US4694419A Programmable controller with direct to plant addressing 失效
标题翻译：可编程控制器，直接到工厂寻址
公开(公告)号：US4694419A
公开(公告)日：1987-09-15
申请号：US658025
申请日：1984-10-05
申请人： Tadashi Okamoto , Kazuhiko Shimoyama , Hiromasa Yamaoka , Mitsuro Takakura
发明人： Tadashi Okamoto , Kazuhiko Shimoyama , Hiromasa Yamaoka , Mitsuro Takakura
IPC分类号： G05B19/05 , G06F9/32 , G06F9/35 , G06F9/355 , G05B11/01 , G06F9/34
CPC分类号： G06F9/355 , G05B19/05 , G06F9/35 , G05B2219/15105
摘要： A programmable controller for controlling a plant on the basis of a stored program includes a processing unit for reading out an instruction from a program memory to process the instruction. In the processing unit, it is determined whether the instruction read out from the memory is an instruction taking a register-modified addressing mode or an instruction taking a direct addressing mode. When the read-out instruction is an instruction taking the direct addressing mode, a plant is directly addressed by the address part of the instruction. Then, an arithmetic operation is performed using the state information which is read out from the plant thus addressed, or plant control information is sent from the processing unit to the plant thus addressed.
摘要翻译：一种用于基于存储的程序控制工厂的可编程控制器包括一个处理单元，用于从程序存储器读出指令以处理该指令。在处理单元中，确定从存储器读出的指令是否是采用寄存器修改寻址模式的指令或采用直接寻址模式的指令。当读出指令是采用直接寻址模式的指令时，工厂由指令的地址部分直接寻址。然后，使用从这样寻址的工厂读出的状态信息进行算术运算，或者从处理单元将工厂控制信息发送到如此寻址的设备。

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