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    • 4. 发明授权
    • Test apparatus and test method
    • 试验装置及试验方法
    • US07631234B2
    • 2009-12-08
    • US11589314
    • 2006-10-27
    • Tatsuya Yamada
    • Tatsuya Yamada
    • G01R31/28G11C29/00G01R31/26H03K19/00
    • G01R31/31928G11C29/56004
    • The present test apparatus avoids proximity restriction violation of an edge and surely generates a test signal. There is provided a test apparatus that tests a device under test. The test apparatus includes a test pattern generating section that generates a test pattern to test the device under test every test period, a plurality of edge generators that respectively generate an edge of a test signal to be supplied to the device under test based on the test pattern every cycle period of a reference clock that is used as a reference for an operation of this test apparatus, a selecting section that selects which edge generator generates each edge of a test signal to be output during the next cycle period based on a pattern of the edge generated during the current cycle period, and a test signal supplying section that supplies the test signal according to each edge generated from the selected edge generator to the device under test.
    • 本测试装置避免了边缘的接近限制违规,并且肯定地产生测试信号。 提供了测试被测设备的测试装置。 测试装置包括:测试图形生成部,其生成测试图案,以测试每个测试周期的被测设备;多个边缘发生器,分别产生测试信号的边缘,以供应给被测设备; 对作为该测试装置的操作的基准的参考时钟的周期周期进行模式化;选择部,其选择哪个边沿发生器基于下一个周期期间的图形生成在下一个周期期间输出的测试信号的每个边沿 在当前周期期间产生的边缘,以及测试信号提供部分,根据从所选边缘发生器产生的每个边缘将测试信号提供给被测器件。
    • 5. 发明申请
    • TEST APPARATUS, AND ELECTRONIC DEVICE
    • 测试设备和电子设备
    • US20080258749A1
    • 2008-10-23
    • US11688838
    • 2007-03-20
    • TATSUYA YAMADA
    • TATSUYA YAMADA
    • G01R31/28
    • G01R31/31926
    • A test apparatus that tests a device under test is provided. The test apparatus includes: a main memory that stores a test data row for testing the device under test; a cache memory that caches the test data row read from the main memory; a pattern generation control section that reads each test data which is not aligned in units of word being a data transfer unit of the main memory and writes the same to cache entries different from each other in the cache memory for each test data; and a pattern generating section that sequentially reads the test data stored of each cache entry in the cache memory and generates a test pattern for testing the device under test.
    • 提供测试被测设备的测试设备。 该测试装置包括:主存储器,其存储用于测试被测设备的测试数据行; 缓存从主存储器读取的测试数据行的高速缓冲存储器; 图案生成控制部,读取作为主存储器的数据传送单元的单元不对齐的每个测试数据,并将其写入高速缓冲存储器中对于每个测试数据彼此不同的高速缓存条目; 以及模式生成部,其顺序地读取高速缓冲存储器中的每个高速缓存条目存储的测试数据,并生成用于测试被测设备的测试模式。
    • 6. 发明申请
    • TEST APPARATUS AND ELECTRONIC DEVICE
    • 测试装置和电子设备
    • US20080235549A1
    • 2008-09-25
    • US11689489
    • 2007-03-21
    • TATSUYA YAMADA
    • TATSUYA YAMADA
    • G01R31/28
    • G01R31/31919G01R31/31813G11C29/56G11C29/56004G11C2029/2602G11C2029/5602
    • There is provided a test apparatus that tests a device under test. The test apparatus includes a pattern memory that stores a test instruction stream determining a test sequence for testing the device under test, an interval register that stores a repeated interval in response to the fact that the repeated interval showing at least one instruction to be repeatedly executed in the test instruction stream has been specified, an instruction cache that caches the test instruction stream read from the pattern memory, a memory control section that reads the test instruction stream from the pattern memory and writes the read stream into the instruction cache, a pattern generating section that sequentially reads and executes instructions included in the test instruction stream from the instruction cache and generates a test pattern corresponding to the executed instruction, and a signal output section that generates a test signal based on the test pattern and supplies the generated signal to the device under test. The pattern generating section repeatedly executes an instruction stream within the repeated interval in the test instruction stream when the repeated interval is stored on the interval register.
    • 提供了测试被测设备的测试装置。 测试装置包括存储测试指令流的模式存储器,该测试指令流确定用于测试被测器件的测试序列,间隔寄存器响应于重复间隔显示至少一个要重复执行的指令的事实而存储重复间隔 在测试指令流中已经指定了缓存从模式存储器读取的测试指令流的指令高速缓存,从模式存储器读取测试指令流并将读取流写入指令高速缓存的存储器控​​制部分,模式 产生部分,其从指令高速缓存读取并执行包括在测试指令流中的指令,并且生成与执行的指令相对应的测试模式;以及信号输出部分,其基于测试模式生成测试信号,并将产生的信号提供给 被测设备。 当重复间隔被存储在间隔寄存器上时,模式生成部分在测试指令流中重复执行重复间隔内的指令流。
    • 7. 发明申请
    • Test apparatus and test method
    • 试验装置及试验方法
    • US20070124638A1
    • 2007-05-31
    • US11589314
    • 2006-10-27
    • Tatsuya Yamada
    • Tatsuya Yamada
    • G01R31/28G06F11/00
    • G01R31/31928G11C29/56004
    • The present test apparatus avoids proximity restriction violation of an edge and surely generates a test signal. There is provided a test apparatus that tests a device under test. The test apparatus includes a test pattern generating section that generates a test pattern to test the device under test every test period, a plurality of edge generators that respectively generate an edge of a test signal to be supplied to the device under test based on the test pattern every cycle period of a reference clock that is used as a reference for an operation of this test apparatus, a selecting section that selects which edge generator generates each edge of a test signal to be output during the next cycle period based on a pattern of the edge generated during the current cycle period, and a test signal supplying section that supplies the test signal according to each edge generated from the selected edge generator to the device under test.
    • 本测试装置避免了边缘的接近限制违规,并且肯定地产生测试信号。 提供了测试被测设备的测试装置。 测试装置包括:测试图形生成部,其生成测试图案,以测试每个测试周期的被测设备;多个边缘发生器,分别产生测试信号的边缘,以供应给被测设备; 对作为该测试装置的操作的基准的参考时钟的周期周期进行模式化;选择部,其选择哪个边沿发生器基于下一个周期期间的图形生成在下一个周期期间输出的测试信号的每个边沿 在当前周期期间产生的边缘,以及测试信号提供部分,根据从所选边缘发生器产生的每个边缘将测试信号提供给被测器件。
    • 10. 发明授权
    • Test apparatus and synchronization method
    • 测试仪器和同步方法
    • US08700964B2
    • 2014-04-15
    • US13029065
    • 2011-02-16
    • Tatsuya Yamada
    • Tatsuya Yamada
    • G01R31/28
    • G01R31/31726G01R31/31922
    • A test apparatus that tests a device under test, including (i) a master domain that includes a master period signal generating section, which generates a master period signal, where the master domain operates based on the master period signal and (ii) a slave domain that includes a slave period signal generating section, which generates a slave period signal, where the slave domain operates based on the slave period signal. The master period signal generating section receives a control signal and resumes generation of the master period signal, which is on hold, and the slave period signal generating section receives the control signal, initializes phase data of the slave period signal, and resumes generation of the slave period signal, which is on hold.
    • 一种测试被测设备的测试装置,包括:(i)包括主周期信号产生部分的主域,其产生主时段信号,其中主域基于主周期信号操作,以及(ii)从属 域,其包括从周期信号生成部分,其产生从周期信号,其中从属域基于从周期信号操作。 主周期信号发生部分接收控制信号并恢复保持的主周期信号的产生,从周期信号产生部分接收控制信号,初始化从周期信号的相位数据,并恢复生成 从周期信号,其保持。