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    • 61. 发明授权
    • Semiconductor test equipment
    • 半导体测试设备
    • US5592496A
    • 1997-01-07
    • US416048
    • 1995-04-04
    • Masao ShimizuKenji Yoshida
    • Masao ShimizuKenji Yoshida
    • G01R31/28G01R31/319G06F11/00
    • G01R31/31922G01R31/2851G01R31/31928
    • A semiconductor test equipment for testing a semiconductor device which is capable of reducing the cost and size is disclosed. The semiconductor test equipment includes a main clock generator for generating a main clock signal having the highest frequency, a first pattern generator which receives the main clock signal for generating a first test pattern signal, a clock divider which divides the main clock signal to generate a lower frequency clock signal, and a second pattern generator which receives the lower frequency clock for generating a second test pattern. The semiconductor test equipment further includes a first wave formatter which receives the first pattern signal for forming a predetermined wave shape, and a second wave formatter which receives the second pattern signal for forming a predetermined wave shape, a first comparator circuit which receives a first output signal from the device under test and compares the first output signal with a first expected pattern from the first pattern generator, and a second comparator circuit which receives a second output signal from the device under test and compares the second output signal with a second expected pattern from the second pattern generator.
    • 公开了一种用于测试能够降低成本和尺寸的半导体器件的半导体测试设备。 半导体测试设备包括用于产生具有最高频率的主时钟信号的主时钟发生器,接收用于产生第一测试图形信号的主时钟信号的第一模式发生器,分频主时钟信号以产生 低频时钟信号,以及接收用于产生第二测试图案的较低频率时钟的第二模式发生器。 半导体测试设备还包括接收用于形成预定波形的第一图案信号的第一波形格式器和接收用于形成预定波形的第二图案信号的第二波形格式器,接收第一输出 信号,并且将第一输出信号与来自第一模式发生器的第一预期模式进行比较,以及第二比较器电路,其从被测器件接收第二输出信号,并将第二输出信号与第二预期模式进行比较 从第二模式发生器。
    • 62. 发明授权
    • Slit system
    • 狭缝系统
    • US5508838A
    • 1996-04-16
    • US292735
    • 1994-08-18
    • Masao ShimizuKenji Ishikawa
    • Masao ShimizuKenji Ishikawa
    • H01J49/06G02B26/02
    • H01J49/06
    • A small-sized, simple, high-resolution slit system adapted for use in a mass spectrometer. The slit system forms a slit whose width can be electrically controlled. The slit system comprises two displacement-enlarging mechanisms disposed in rotation symmetry. Each displacement-enlarging mechanism comprises two levers disposed in series. Each displacement-enlarging mechanism is formed by one flange provided with a groove extending therethrough. A piezoelectric device which expands and contracts along one axis is mounted to the input end of each displacement-enlarging mechanism. A blade is mounted to the output end of each displacement-enlarging mechanism. Both blades together form the slit which can be opened and closed.
    • 适用于质谱仪的小尺寸,简单,高分辨率的狭缝系统。 狭缝系统形成其宽度可以被电控制的狭缝。 狭缝系统包括以旋转对称设置的两个位移放大机构。 每个位移放大机构包括串联布置的两个杠杆。 每个位移放大机构由设有延伸穿过其中的槽的一个凸缘形成。 沿着一个轴线膨胀和收缩的压电装置安装到每个位移放大机构的输入端。 叶片安装到每个位移放大机构的输出端。 两个叶片一起形成可以打开和关闭的狭缝。
    • 66. 发明授权
    • Test pattern generating apparatus
    • 测试图案生成装置
    • US4586181A
    • 1986-04-29
    • US551429
    • 1983-11-14
    • Masao Shimizu
    • Masao Shimizu
    • G01R31/28G01R31/3183G01R31/319
    • G01R31/31921
    • A test pattern generator includes means for reading out a plurality of memories non-successively while outputting the test patterns stored identically in the addresses of the memories, such as for sequentially repeating the test patterns that are provided to a logic circuit being tested. The sequence of test patterns is determined by a series of instructions which are accessed by a program counter, and the instructions can cause a jump in the counting of the program counter, for instance to repeat addresses of the memories for repeating a desired sequence of test patterns a predetermined number of times. The timing of the addressing of the memories for the reading out of the test patterns can be faster than the timing for writing the test patterns into the memories for storage.
    • 测试图形发生器包括用于在输出在存储器的地址中相同存储的测试图案的同时非连续读出多个存储器的装置,例如用于顺序重复提供给被测试的逻辑电路的测试图案。 测试图案的顺序由程序计数器访问的一系列指令确定,并且指令可以导致程序计数器的计数中的跳转,例如重复存储器的地址以重复所需的测试序列 模式预定次数。 用于读出测试图案的存储器寻址的定时可以比将测试图案写入存储器的时间更快。
    • 67. 发明授权
    • Test pattern generating apparatus
    • 测试图案生成装置
    • US4555663A
    • 1985-11-26
    • US552374
    • 1983-11-16
    • Masao Shimizu
    • Masao Shimizu
    • G01R31/28G01R31/3183G01R31/319G06F11/00
    • G01R31/31908
    • A word of a test pattern is divided into blocks and stored in a storage device of a test pattern generator for testing a logic device. The test pattern blocks are sequentially provided to respective blocks of a pattern generator, which provides at respective outputs all of the blocks of a test pattern word at the same time. If a block of the pattern generator is faulty, or if another component of the test pattern generator corresponding to a block of the pattern generator is faulty, the respective block of each test pattern word can be provided to an unused block of the pattern generator, for providing the test patterns for testing the logic device without the need for reprogramming the test pattern blocks to be stored in the storage device. The data stored in the storage device identifies the position of each respective block of the test pattern words, for controlling the transferring of the test pattern blocks from the storage device to the pattern generator.
    • 测试模式的字被分成块并存储在用于测试逻辑设备的测试码型发生器的存储设备中。 测试图案块被顺序地提供给模式生成器的各个块,它们在相应的输出端同时提供测试模式字的所有块。 如果模式发生器的块有故障,或者如果与模式发生器的块相对应的测试码型发生器的另一个组件有故障,则可以将每个测试模式字的相应块提供给模式生成器的未使用块, 用于提供用于测试逻辑器件的测试模式,而不需要重新编程要存储在存储设备中的测试模式块。 存储在存储装置中的数据识别测试图案字的每个相应块的位置,用于控制将测试图案块从存储装置传送到图案生成器。