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    • 4. 发明授权
    • Semiconductor integrated circuit and semiconductor integrated circuit system having serially interconnectable data buses
    • 具有串行可互连数据总线的半导体集成电路和半导体集成电路系统
    • US06297675B1
    • 2001-10-02
    • US09478530
    • 2000-01-06
    • Hironori AkamatsuYutaka TeradaTakashi HirataYukio ArimaSatoshi TakahashiTadahiro YoshidaYoshihide KomatsuHiroyuki Yamauchi
    • Hironori AkamatsuYutaka TeradaTakashi HirataYukio ArimaSatoshi TakahashiTadahiro YoshidaYoshihide KomatsuHiroyuki Yamauchi
    • H03B100
    • H03K19/018514Y10T307/549
    • A data line pair and a strobe line pair are provided between first and second chips to exchange data therebetween. The first chip includes an output circuit and a controller for controlling the output circuit. The second chip includes an input circuit. For example, the output circuit supplies a direct current from a power supply to one of the data lines. Then, the input circuit feeds back the received current to the output circuit through a pair of terminal resistors and the other data line. Subsequently, the output circuit supplies the fed back direct current to one of the strobe lines. In response, the input circuit feeds back the received current again to the output circuit through another pair of terminal resistors and the other strobe line. And then the fed back current is drained to the ground. Thus, compared to driving the data and strobe line pairs separately with the same amount of current supplied, the current dissipation can be halved. In this manner, the present invention is applicable to reduction of current dissipation when data should be transmitted at high speeds through multiple data bus pairs that are driven with a current supplied.
    • 在第一和第二芯片之间提供数据线对和选通线对,以在它们之间交换数据。 第一芯片包括输出电路和用于控制输出电路的控制器。 第二芯片包括输入电路。 例如,输出电路将电流从电源提供给数据线之一。 然后,输入电路通过一对端子电阻和另一条数据线将接收的电流反馈到输出电路。 随后,输出电路将反馈的直流电流提供给选通线之一。 作为响应,输入电路通过另一对端子电阻器和另一个选通线路将接收到的电流再次反馈到输出电路。 然后将反馈电流排到地面。 因此,与以相同的电流量驱动数据和选通线对相比,电流消耗可以减半。 以这种方式,本发明可应用于当通过以所提供的电流驱动的多个数据总线对以高速传输数据时,减少电流消耗。
    • 6. 发明授权
    • Semiconductor integrated circuit and method for testing the same
    • 半导体集成电路及其测试方法
    • US06631486B1
    • 2003-10-07
    • US09405015
    • 1999-09-27
    • Yoshihide KomatsuTadahiro YoshidaYukio Arima
    • Yoshihide KomatsuTadahiro YoshidaYukio Arima
    • G01R3128
    • G01R31/31905G01R31/31926
    • A test enable signal Data_En is output from a data generator 11 in a tester 10 to a device under a test (DUT) 20. In the DUT 20, a first logic circuit 21 converts a signal pattern with an ordinary transfer rate, which has been stored on a register 28, into a high-transfer-rate signal pattern SpeedData_Tx with a high rate. And a transmitter 22 transmits the high-transfer-rate signal. During a test, the high-transfer-rate signal transmitted is received by, a receiver 23 with a switch 24 turned ON. Then, the high-transfer-rate signal received is output to a second logic circuit 26, which converts the high-transfer-rate signal into a low-transfer-rate signal Data_Rx with an ordinary rate. Finally, the low-transfer-rate signal is output to the tester 10 and compared to an expected value thereof by a comparator 12. In this manner, a semiconductor device operating at a high speed can be tested using a tester operating at a lower speed.
    • 测试使能信号Data_En从测试器10中的数据发生器11输出到被测设备(DUT)20。在DUT 20中,第一逻辑电路21以一般传输速率转换信号模式 存储在寄存器28中,以高速率转换成高传输速率信号模式SpeedData_Tx。 并且发射机22发送高传输速率信号。 在测试期间,传输的高传输速率信号由开关24接通的接收机23接收。 然后,所接收的高传输速率信号被输出到第二逻辑电路26,第二逻辑电路26将高传输速率信号以普通速率转换成低传输速率信号Data_Rx。 最后,将低传输速率信号输出到测试器10,并通过比较器12与其期望值进行比较。以这种方式,可以使用以较低速度操作的测试仪来测试以高速工作的半导体器件 。
    • 7. 发明授权
    • Signal transmitting receiving apparatus
    • 信号发送接收装置
    • US06768334B1
    • 2004-07-27
    • US09553308
    • 2000-04-20
    • Hiroyuki YamauchiTadahiro Yoshida
    • Hiroyuki YamauchiTadahiro Yoshida
    • H03K19003
    • H01P5/02
    • A signal transmitting/receiving apparatus according to the present invention includes: a transmitting device for transmitting data; a receiving device for receiving the data; a data line for transmitting the data; and a supply line for transmitting a bias voltage for determining a voltage of the data line, wherein the transmitting device and the receiving device are connected to each other through the data line and the supply line, the transmitting device including: a driver circuit for outputting the data to the data lines and a bias generating means for generating the bias voltage and outputting the bias voltage to the supply line, the receiving device including: a terminating resistor connected to the data line; and a receiver circuit for detecting the data from the data line, wherein the data line is connected to the supply line via the terminating resistor.
    • 根据本发明的信号发送/接收装置包括:发送装置,用于发送数据; 用于接收数据的接收装置; 用于发送数据的数据线; 以及用于发送用于确定数据线的电压的偏置电压的电源线,其中所述发送装置和所述接收装置通过所述数据线和所述供给线彼此连接,所述发送装置包括:驱动器电路,用于输出 数据线路的数据和偏置产生装置,用于产生偏置电压并将偏置电压输出到电源线,所述接收装置包括:连接到数据线的终端电阻; 以及用于检测来自数据线的数据的接收器电路,其中数据线经由终端电阻器连接到电源线。
    • 8. 发明授权
    • Signal transmitting receiving apparatus
    • 信号发送接收装置
    • US06985007B2
    • 2006-01-10
    • US10708235
    • 2004-02-18
    • Hiroyuki YamauchiTadahiro Yoshida
    • Hiroyuki YamauchiTadahiro Yoshida
    • H03K19/003
    • H01P5/02
    • A signal transmitting/receiving apparatus according to the present invention includes: a transmitting device for transmitting data; a receiving device for receiving the data; a data line for transmitting the data; and a supply line for transmitting a bias voltage for determining a voltage of the data line, wherein the transmitting device and the receiving device are connected to each other through the data line and the supply line, the transmitting device including: a driver circuit for outputting the data to the data line; and a bias generating means for generating the bias voltage and outputting the bias voltage to the supply line, the receiving device including: a terminating resistor connected to the data line; and a receiver circuit for detecting the data from the data line, wherein the data line is connected to the supply line via the terminating resistor.
    • 根据本发明的信号发送/接收装置包括:发送装置,用于发送数据; 用于接收数据的接收装置; 用于发送数据的数据线; 以及用于发送用于确定数据线的电压的偏置电压的电源线,其中所述发送装置和所述接收装置通过所述数据线和所述供给线彼此连接,所述发送装置包括:驱动器电路,用于输出 数据到数据线; 以及偏置产生装置,用于产生所述偏置电压并将偏置电压输出到所述电源线,所述接收装置包括:终端电阻,连接到所述数据线; 以及用于检测来自数据线的数据的接收器电路,其中数据线经由终端电阻器连接到电源线。
    • 10. 发明授权
    • Video signal transmitting/receiving system
    • 视频信号发射/接收系统
    • US07321403B2
    • 2008-01-22
    • US11020046
    • 2004-12-23
    • Ryogo YanagisawaTadahiro YoshidaSatoshi Takahashi
    • Ryogo YanagisawaTadahiro YoshidaSatoshi Takahashi
    • H04N5/38H04N5/04
    • H04N5/073H04N11/04H04N11/20
    • In a transmitting section for a video signal transmitting/receiving system for transmitting digital video signals using a plurality of transmission channels, video guard band signals are inserted into video signals associated with the transmission channels immediately before transition from a blanking region to an effective video region. In a receiving section for the system, the inserted video guard band signals are detected for the respective transmission channels. A skew among the transmission channels is detected based on the detection result. To synchronize the video guard band signals among all the transmission channels, with reference to one of the video signals associated with a transmission channel with the longest delay (i.e., delayed by one clock cycle 1T), a delay of 1T is given to the other video signals. As a result, even if a skew occurs among the transmission channels, correct pixel data is displayed.
    • 在用于使用多个发送信道发送数字视频信号的视频信号发送/接收系统的发送部分中,在从消隐区域到有效视频区域的转换之前,将视频保护带信号插入到与传输信道相关联的视频信号中 。 在系统的接收部分中,针对各个传输信道检测插入的视频保护频带信号。 基于检测结果检测传输信道之间的偏移。 为了使所有传输信道中的视频保护频带信号同步,参考与具有最长延迟(即,延迟一个时钟周期1T)的传输信道相关联的视频信号之一,将1T的延迟给予 其他视频信号。 结果,即使在发送信道之间发生偏斜,也显示正确的像素数据。