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    • 1. 发明申请
    • Semiconductor integrated circuit incorporating test configuration and test method for the same
    • 半导体集成电路结合测试配置和测试方法相同
    • US20060282730A1
    • 2006-12-14
    • US11397899
    • 2006-04-05
    • Masayuki AraiKazuhiko IwasakiSatoshi FukumotoTakeshi ShodaJunichi Nishimoto
    • Masayuki AraiKazuhiko IwasakiSatoshi FukumotoTakeshi ShodaJunichi Nishimoto
    • G01R31/28
    • G01R31/318544G01R31/318536
    • An object of the invention is to drastically reduce the area overhead in a semiconductor integrated circuit incorporating a test configuration that uses a partially rotational scan circuit. To achieve this, in the semiconductor integrated circuit incorporating the test configuration that comprises a combinational circuit (3) and a scan chain (2) constructed by connecting a plurality of scan flip-flops (5) in a chain, the scan chain (2) is divided into a plurality of sub scan-chains (20a to 20n) each of which has a partially rotational scan (PRS) function and a test response compaction (MISR) function. By performing a scan test in a plurality of steps while changing the combination of the sub scan-chains to be set as PRS and the sub scan-chains to be set as MISR, the test can be performed without having to provide a test response compactor separately from the scan chain, and thus the area overhead can be reduced.
    • 本发明的一个目的是大大减少包含使用部分旋转扫描电路的测试配置的半导体集成电路中的面积开销。 为了实现这一点,在包括组合电路(3)和通过连接多个扫描触发器(5)构成的扫描链(2)的测试配置的半导体集成电路中,扫描链(2) )被分成多个子扫描链(20a至20n),每个子扫描链具有部分旋转扫描(PRS)功能和测试响应压缩(MISR)功能。 通过在将要设置为PRS的子扫描链和将被设置为MISR的副扫描链的组合改变的同时执行多个步骤中的扫描测试,可以执行测试而不必提供测试响应压缩器 与扫描链分开,因此可以减少面积开销。
    • 2. 发明授权
    • Semiconductor integrated circuit incorporating test configuration and test method for the same
    • 半导体集成电路结合测试配置和测试方法相同
    • US07702979B2
    • 2010-04-20
    • US11397899
    • 2006-04-05
    • Masayuki AraiKazuhiko IwasakiSatoshi FukumotoTakeshi ShodaJunichi Nishimoto
    • Masayuki AraiKazuhiko IwasakiSatoshi FukumotoTakeshi ShodaJunichi Nishimoto
    • G01R31/28
    • G01R31/318544G01R31/318536
    • An object of the invention is to drastically reduce the area overhead in a semiconductor integrated circuit incorporating a test configuration that uses a partially rotational scan circuit. To achieve this, in the semiconductor integrated circuit incorporating the test configuration that comprises a combinational circuit (3) and a scan chain (2) constructed by connecting a plurality of scan flip-flops (5) in a chain, the scan chain (2) is divided into a plurality of sub scan-chains (20a to 20n) each of which has a partially rotational scan (PRS) function and a test response compaction (MISR) function. By performing a scan test in a plurality of steps while changing the combination of the sub scan-chains to be set as PRS and the sub scan-chains to be set as MISR, the test can be performed without having to provide a test response compactor separately from the scan chain, and thus the area overhead can be reduced.
    • 本发明的一个目的是大大减少包含使用部分旋转扫描电路的测试配置的半导体集成电路中的面积开销。 为了实现这一点,在包括组合电路(3)和通过连接多个扫描触发器(5)构成的扫描链(2)的测试配置的半导体集成电路中,扫描链(2) )被分成多个子扫描链(20a至20n),每个子扫描链具有部分旋转扫描(PRS)功能和测试响应压缩(MISR)功能。 通过在将要设置为PRS的子扫描链和将被设置为MISR的副扫描链的组合改变的同时执行多个步骤中的扫描测试,可以执行测试而不必提供测试响应压缩器 与扫描链分开,因此可以减少面积开销。
    • 4. 发明申请
    • COMPUTER PROGRAM AND COMPUTER SYSTEM FOR PRODUCING TEST FLOW
    • 用于生产测试流程的计算机程序和计算机系统
    • US20110131217A1
    • 2011-06-02
    • US12958350
    • 2010-12-01
    • Kazuhiko IwasakiMasayuki AraiKenichi Ichino
    • Kazuhiko IwasakiMasayuki AraiKenichi Ichino
    • G06F17/30
    • G01R31/2846
    • A program executed on a computer including storage, processing, output, and input units, the storage unit storing test-difficulty-calculation-elements-database, test-menu-database, and test-flow-database, for each test-menu-record, the program causing the processing unit to execute: calculating test-difficulty for each test-menu-record based on test-difficulty-calculation-formula by using at least one among pieces of information indicative of relationship with netlist, the number of package/test pins, expected operational clock frequency, process technology information, power consumption, and tester storage space; identifying all relationship between DFT scheme and priority, and causing the storage unit to store information indicative of the relationship between the DFT scheme and priority into the test-flow-database; and sorting the DFT scheme in an order of the priority based on the relationship between the DFT scheme and priority, causing the storage unit to store the DFT scheme as a test flow, and causing the output unit to output the test flow.
    • 在包括存储,处理,输出和输入单元的计算机上执行的程序,存储单元存储测试难度计算单元数据库,测试菜单数据库和测试流程数据库, 记录,使得处理单元执行的程序:基于测试难度计算公式计算每个测试菜单记录的测试难度,通过使用指示与网表的关系的信息中的至少一个,包的数量 /测试引脚,预期的工作时钟频率,工艺技术信息,功耗和测试仪存储空间; 识别DFT方案和优先级之间的所有关系,并使存储单元将指示DFT方案和优先级之间的关系的信息存储到测试流数据库中; 以及根据DFT方案和优先级之间的关系按优先顺序排列DFT方案,使存储单元将DFT方案存储为测试流程,并使输出单元输出测试流程。
    • 5. 发明授权
    • Computer program and computer system for producing test flow
    • 用于生产测试流程的计算机程序和计算机系统
    • US08271460B2
    • 2012-09-18
    • US12958350
    • 2010-12-01
    • Kazuhiko IwasakiMasayuki AraiKenichi Ichino
    • Kazuhiko IwasakiMasayuki AraiKenichi Ichino
    • G06F17/30
    • G01R31/2846
    • A program executed on a computer including storage, processing, output, and input units, the storage unit storing test-difficulty-calculation-elements-database, test-menu-database, and test-flow-database, for each test-menu-record, the program causing the processing unit to execute: calculating test-difficulty for each test-menu-record based on test-difficulty-calculation-formula by using at least one among pieces of information indicative of relationship with netlist, the number of package/test pins, expected operational clock frequency, process technology information, power consumption, and tester storage space; identifying all relationship between DFT scheme and priority, and causing the storage unit to store information indicative of the relationship between the DFT scheme and priority into the test-flow-database; and sorting the DFT scheme in an order of the priority based on the relationship between the DFT scheme and priority, causing the storage unit to store the DFT scheme as a test flow, and causing the output unit to output the test flow.
    • 在包括存储,处理,输出和输入单元的计算机上执行的程序,存储单元存储测试难度计算单元数据库,测试菜单数据库和测试流程数据库, 记录,使得处理单元执行的程序:基于测试难度计算公式计算每个测试菜单记录的测试难度,通过使用指示与网表的关系的信息中的至少一个,包的数量 /测试引脚,预期的工作时钟频率,工艺技术信息,功耗和测试仪存储空间; 识别DFT方案和优先级之间的所有关系,并使存储单元将指示DFT方案和优先级之间的关系的信息存储到测试流数据库中; 以及根据DFT方案和优先级之间的关系按优先顺序排列DFT方案,使存储单元将DFT方案存储为测试流程,并使输出单元输出测试流程。
    • 7. 发明授权
    • Microcomputer system with buffer in peripheral storage control
    • 微机系统具有缓冲区外设存储控制
    • US4716522A
    • 1987-12-29
    • US473861
    • 1983-03-10
    • Tsuneo FunabashiKazuhiko IwasakiHideo Nakamura
    • Tsuneo FunabashiKazuhiko IwasakiHideo Nakamura
    • G06F3/06G06F13/00G06F13/28
    • G06F3/0601G06F13/28G06F2003/0691
    • A microcomputer system has a peripheral storage control equipped with both a circuit which is responsive to a transfer command received from an MPU to set in a counter a transfer start address, which is designated subsequent to that command. The counter to supply an address for a buffer to control transfer of data from the output of the buffer to a common bus connected between the MPU and a RAM. A circuit is provided for controlling the aforementioned counter to count up in response to a transfer acknowledge signal which is subsequently received from a direct memory access control. In order that the data in the buffer may not be transferred to the RAM but may be rewritten, the peripheral storage control is further equipped with both a circuit for setting a rewrite address also received from the MPU in the counter, which is operative to identify the address of the selected buffer, in association with a rewrite command received from the MPU, and a circuit is also provided for applying the rewrite signal to the buffer each time the rewrite data is received after the setting operation from the MPU.
    • 微型计算机系统具有外围存储控制,该外围存储控制装置具有响应于从MPU接收到的传送命令的电路,在计数器中设置在该命令之后指定的传送起始地址。 该计数器为缓冲器提供地址,以控制从缓冲器的输出到连接在MPU和RAM之间的公共总线的数据传输。 提供电路,用于响应于随后从直接存储器访问控制接收的传送确认信号来控制上述计数器进行计数。 为了缓冲器中的数据可能不被传送到RAM但是可以被重写,外围存储控制还配备有用于设置也从计数器中的MPU接收的重写地址的电路,其可操作地识别 还提供与从MPU接收的重写命令相关联的所选择的缓冲器的地址和电路,用于在每次在来自MPU的设置操作之后接收到重写数据时,将重写信号施加到缓冲器。