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    • 51. 发明授权
    • Data processor
    • 数据处理器
    • US5247521A
    • 1993-09-21
    • US848547
    • 1992-03-09
    • Yasushi AkaoShinkichi HottaHaruo Keida
    • Yasushi AkaoShinkichi HottaHaruo Keida
    • G06F11/267G06F15/78
    • G06F11/2236G06F15/7814
    • In a single chip microcomputer, functional blocks such as the central processing unit (CPU), the ROM for storing programs, the RAM for storing the data and the I/O circuit for the input and the output of the data and the like are formed on one semiconductor substrate. Address data is used for selecting predetermined areas of the functional blocks in the internal bus to which the address data must be supplied by the CPU. A buffer circuit is capable of being supplied with address data from the external devices and is provided in the microcomputer. When the functional blocks are tested, address data is directly supplied to the functional blocks from the external tester without using the instruction execution of the CPU, and necessary data is outputted from the area of the predetermined functional block, passing through the buffer circuit and is read out directly to the external devices. Hence, the testing efficiency is improved.
    • 在单片机中,形成诸如中央处理单元(CPU),用于存储程序的ROM,用于存储数据的RAM和用于输入和数据输出的I / O电路等功能块 在一个半导体衬底上。 地址数据用于选择CPU必须提供地址数据的内部总线中的功能块的预定区域。 缓冲电路能够从外部设备提供地址数据,并且被提供在微计算机中。 当功能块被测试时,地址数据直接从外部测试器提供给功能块,而不用CPU的指令执行,并且必要的数据从预定功能块的区域输出,通过缓冲电路,并且是 直接读取外部设备。 因此,提高了测试效率。
    • 53. 发明授权
    • Integrated CPU and DMA with shared executing unit
    • 具有共享执行单元的集成CPU和DMA
    • US5005121A
    • 1991-04-02
    • US326472
    • 1989-03-20
    • Kunihiko NakadaYasushi Akao
    • Kunihiko NakadaYasushi Akao
    • G06F9/26G06F9/22G06F13/10G06F13/28G06F15/78
    • G06F13/285
    • A data processor controller for a microprogramming system is constructed with a single operation execution unit serving both a microprocessor and a peripheral device such as a direct memory access controller. In addition to the single operation execution unit, the controller includes a micro-memory which stores micro-instructions for controlling both the microprocessor and the peripheral device, and address registers, multiplexers and decoders integrated into a single device. Different ROM address registers in the controller are separately assigned to provide an address decoder with addresses of selected memory locations in the micro-memory containing the micro-instructions for the microprocessor and the peripheral device, thereby enabling the controller, through multiplexing between the address registers, to use the arithmetic execution unit, counter and bus interface of the single operation exeuction unit on a time sharing basis, for controlling the functions of both the microprocessor and the peripheral device.
    • 用于微程序系统的数据处理器控制器由单个操作执行单元构成,该单个操作执行单元用于微处理器和诸如直接存储器访问控制器的外围设备。 除了单个操作执行单元之外,控制器还包括微存储器,其存储用于控制微处理器和外围设备的微指令,以及集成到单个设备中的地址寄存器,复用器和解码器。 控制器中的不同的ROM地址寄存器被分别分配给地址解码器,该地址解码器具有包含微处理器和外围设备的微指令的微存储器中所选择的存储器位置的地址,从而使控制器能够通过地址寄存器 在时间分配的基础上使用单个操作单元的算术执行单元,计数器和总线接口,用于控制微处理器和外围设备的功能。
    • 57. 发明授权
    • Microprocessor for carrying out a plurality of different microprograms
at the same time and method for controlling the microprocessor
    • 用于同时执行多个不同微程序的微处理器以及用于控制微处理器的方法
    • US5410658A
    • 1995-04-25
    • US960505
    • 1992-10-13
    • Terumi SawaseYasushi Akao
    • Terumi SawaseYasushi Akao
    • G06F9/26G06F9/28G06F9/38G06T9/06
    • G06F9/28G06F9/3851
    • The inventive microprocessor includes a first section which runs a microprogram pertinent to a macroinstruction and a second section which runs microprograms that are independent of the macroinstruction, with the first and second sections being operated selectively under time-division control. The microprocessor operates by either selecting one of a plurality of microaddress registers or a macroinstruction register, and by reading out the contents of the selected register for use as an address of a microinstruction memory, carrying out a process based on a microinstruction read out of the microinstruction memory in accordance with the address and generating a next macroinstruction address or next microinstruction address, making access to a macroinstruction memory in accordance with the next macroinstruction address thereby to read out a next macroinstruction, loading the next macroinstruction into the macroinstruction register, selecting one of the microaddress registers and loading the next microinstruction address into the selected microinstruction register, and controlling the selecting operations on a time-division basis.
    • 本发明的微处理器包括运行与宏指令相关的微程序的第一部分和运行独立于宏指令的微程序的第二部分,其中第一和第二部分选择性地在时分控制下操作。 微处理器通过选择多个微地址寄存器或宏指令寄存器之一进行操作,并且通过读出所选择的寄存器的内容以用作微指令存储器的地址,执行基于从该指令读出的微指令的处理 微指令存储器根据地址生成下一个宏指令地址或下一个微指令地址,根据下一个宏指令地址访问宏指令存储器,从而读出下一个宏指令,将下一个宏指令加载到宏指令寄存器中,选择一个 的微地址寄存器,并将下一个微指令地址加载到所选择的微指令寄存器中,并且以时分方式控制选择操作。