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    • 63. 发明授权
    • Random access memory arrangements
    • 随机存取存储器布置
    • US4415994A
    • 1983-11-15
    • US302107
    • 1981-09-14
    • John G. S. IveAlan C. Thirlwall
    • John G. S. IveAlan C. Thirlwall
    • H04N5/956G06F5/16G06F12/06G06F13/16G09G5/00G11B20/10G11C7/00G11C13/00
    • G06F5/16G11C7/00
    • A random access memory arrangement for reading data out of and into a random access memory asynchronously, for example, to effect time base correction of a digital television signal, comprises a random access memory having common read and write data terminals, an input circuit for supplying input data to said read and write data terminals for writing in the random access memory, a first output latch circuit connected to the read and write data terminals, a second output latch circuit connected to the first latch circuit, and means for supplying control signals to enable the random access memory to write the input data therein at given addresses in synchronism with write pulses of a write pulse signal, to enable the random access memory to read output data from given addresses therein in synchronism with read pulses of a read pulse signal, the read pulse signal being asynchronous with the write pulse signal, to control the first output latch circuit to hold and to supply to the second output latch circuit data supplied to the first latch circuit immediately prior to each write pulse, and to pass therethrough to the second latch circuit data supplied to the first latch circuit at all other times, and to control the second latch circuit to hold the data supplied to it by the first latch circuit immediately prior to the beginning of each read pulse until the beginning of the next succeeding read pulse and to supply the data so held to an output of the arrangement.
    • 一种随机存取存储装置,用于异步地将数据读出并进入随机存取存储器,例如实现数字电视信号的时基校正,包括具有公共读和写数据端的随机存取存储器,用于提供数据的输入电路 将数据输入到所述读取和写入数据终端以写入随机存取存储器中,连接到读和写数据端的第一输出锁存电路,连接到第一锁存电路的第二输出锁存电路,以及用于将控制信号提供给 使得随机存取存储器以与写入脉冲信号的写入脉冲同步地在给定的地址上写入输入数据,以使得随机存取存储器与读取脉冲信号的读取脉冲同步地从其中给定的地址读出输出数据, 读取脉冲信号与写入脉冲信号异步,以控制第一输出锁存电路保持并提供给第二个o 在每个写入脉冲之前提供给第一锁存电路的输出锁存电路数据,并且在所有其他时间通过其提供给提供给第一锁存电路的第二锁存电路数据,并且控制第二锁存电路以保持所提供的数据 由紧接在每个读取脉冲开始之前的第一锁存电路直到下一个后续读取脉冲的开始,并且将所保持的数据提供给该装置的输出。
    • 64. 发明授权
    • Input process sequence controller
    • 输入过程顺序控制器
    • US4333143A
    • 1982-06-01
    • US95920
    • 1979-11-19
    • Powell L. Calder
    • Powell L. Calder
    • G06F5/16G06F13/12G06F13/28G06F3/00
    • G06F5/16G06F13/124G06F13/28
    • An input process sequence controller provides a sophisticated communication processing link between a central processor and peripheral digital apparatus. Data is transmitted from the peripheral digital apparatus to the process sequence controller whose function is to process that incoming data as commanded, to relieve the central processor of that task. The process sequence controller has a processor unit, controlled by a Read-only Memory for performing certain functions on the incoming data. The incoming data is received by one portion of a first swapping buffer while a second portion transmits previously received data to the processor unit. When the second portion is emptied, it begins receiving data while the first portion transmits data. A first portion of a second swapping buffer receives processed data from the processor unit while a second portion transmits processed data to the central processor. When the second portion is emptied, it begins receiving processed data while the first portion transmits its processed data. This procedure continues during an operation.
    • 输入过程顺序控制器在中央处理器和外围数字设备之间提供复杂的通信处理链路。 数据从外围数字设备发送到处理序列控制器,其功能是按照命令处理输入数据,以缓解中央处理器的任务。 处理序列控制器具有由仅读存储器控制的处理器单元,用于对输入数据执行某些功能。 输入数据由第一交换缓冲器的一部分接收,而第二部分将先前接收到的数据发送到处理器单元。 当第二部分被清空时,它开始接收数据,而第一部分发送数据。 第二交换缓冲器的第一部分从处理器单元接收经处理的数据,而第二部分将经处理的数据发送到中央处理器。 当第二部分被清空时,它开始接收处理的数据,而第一部分发送其处理的数据。 此过程在操作期间继续。