Method and system for producing a synchronous signal from
_cyclic-redundancy-coded digital data blocks
    12.
    发明授权
    Method and system for producing a synchronous signal from _cyclic-redundancy-coded digital data blocks 失效
    用于从循环冗余编码的数字数据块产生同步信号的方法和系统

    公开(公告)号:US4481648A

    公开(公告)日:1984-11-06

    申请号:US398141

    申请日:1982-07-14

    申请人: Yasuhiko Fujii

    发明人: Yasuhiko Fujii

    CPC分类号: H04L7/048

    摘要: Each block of data having information data and redundant bits is transmitted without any synchronous signal bit word, while transmitted data is processed to find the boundary between consecutive data blocks so that a synchronous signal will be produced at the receiving end. The system for producing the synchronous signal comprises a cyclic redundancy check (CRC) circuit, a frequency divider for dividing the frequency of shift clock pulses and a reset pulse generating circuit. The reset pulse generating circuit is responsive to the output signal from the frequency divider and the shift clock pulses to produce periodically first and second reset pulses with which the CRC circuit and the frequency divider are initialized. The reset pulse generating circuit is further responsive to an error signal from the CRC circuit so that further first and second reset pulses are produced with which the CRC circuit and the frequency divider are initialized again. Initialization is repeated until the frequency divider is synchronous with the bits of the data blocks, and once synchronizm is established, the output signal from the frequency divider can be regarded as the synchronous signal indicative of the boundary between any two consecutive data blocks.

    摘要翻译: 在没有任何同步信号位字的情况下发送具有信息数据和冗余位的每个数据块,同时处理发送数据以找出连续数据块之间的边界,从而在接收端产生同步信号。 用于产生同步信号的系统包括循环冗余校验(CRC)电路,用于分频移位时钟脉冲的频率的分频器和复位脉冲发生电路。 复位脉冲发生电路响应来自分频器和移位时钟脉冲的输出信号,以产生CRC电路和分频器初始化的周期性第一和第二复位脉冲。 复位脉冲发生电路还响应来自CRC电路的误差信号,从而产生再次初始化CRC电路和分频器的另外的第一和第二复位脉冲。 重复初始化直到分频器与数据块的位同步,并且一旦建立同步,来自分频器的输出信号可以被认为是指示任何两个连续数据块之间的边界的同步信号。

    Phase-shifting circuit
    13.
    发明授权
    Phase-shifting circuit 失效
    移相电路

    公开(公告)号:US4137507A

    公开(公告)日:1979-01-30

    申请号:US785213

    申请日:1977-04-06

    IPC分类号: H03H11/16 H03H11/26 H03F3/04

    CPC分类号: H03H11/16 H03H11/26

    摘要: A phase-shifting circuit comprises a first transistor circuit having a base to which an input signal is applied, first and second resistors of equal resistance values connected mutually in series and between an emitter of the first transistor circuit and ground, a third resistor connected at one terminal thereof to the emitter of the first transistor circuit, a capacitor connected between the other terminal of the third resistor and ground, and a second transistor circuit having a base connected to said other terminal of the third resistor and an emitter connected to the junction between the first and second resistors, an output signal being led out from a collector of the second transistor circuit.

    摘要翻译: 移相电路包括具有施加输入信号的基极的第一晶体管电路,串联连接的第一和第二电阻值相等的第一和第二电阻器,以及第一晶体管电路和地的发射极之间的第三电阻器, 一个端子连接到第一晶体管电路的发射极,连接在第三电阻器的另一个端子和地之间的电容器,以及连接到第三电阻器的另一个端子的基极的第二晶体管电路和连接到第三电阻器的发射极的发射极 在第一和第二电阻之间,输出信号从第二晶体管电路的集电极引出。

    Dust-removing synthetic resin filter
    18.
    发明授权
    Dust-removing synthetic resin filter 失效
    除尘合成树脂过滤器

    公开(公告)号:US06197708B1

    公开(公告)日:2001-03-06

    申请号:US09195445

    申请日:1998-11-18

    IPC分类号: B32B516

    摘要: A dust-removing synthetic resin filter of the present invention comprises a filter material which comprises: synthetic resin fibers; and iron oxide particles having a catalytic activity to chlorine or hydrogen chloride gas. Such a dust-removing synthetic resin filter is capable of so-called clean combustion which is free from discharge of harmful substances upon incineration thereof and is advantageous from the standpoint of preventing environmental pollution.

    摘要翻译: 本发明的除尘合成树脂过滤器包括一种过滤材料,它包括:合成树脂纤维; 以及对氯或氯化氢气体具有催化活性的氧化铁颗粒。 这种除尘合成树脂过滤器能够进行所谓的清洁燃烧,其在焚烧时不会排放有害物质,从防止环境污染的观点来看是有利的。

    Substituted benzoate derivatives
    19.
    发明授权
    Substituted benzoate derivatives 失效
    取代苯甲酸酯衍生物

    公开(公告)号:US5473096A

    公开(公告)日:1995-12-05

    申请号:US93953

    申请日:1993-07-21

    摘要: The present invention relates to the compounds of the formula: ##STR1## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, and R.sup.8 are independently hydrogen, lower alkyl which is optionally substituted, lower alkoxy which is optionally substituted, hydroxy, acyloxy, or halogen; R.sup.9 is hydrogen, hydroxy, acyloxy, lower alkyl which is optionally substituted, lower alkoxy which is optionally substituted, or lower alkylamino which is optionally substituted; E.sup.1 is hydrogen, or an ester residue; m is an integer of from 1 to 4;or a pharmaceutically acceptable salt thereof. The compounds of the present invention exhibit phospholipase A.sub.2 inhibitory activity, and can be used in treating inflammatory conditions.

    摘要翻译: 本发明涉及下式的化合物:其中R 1,R 2,R 3,R 4,R 5,R 6,R 7和R 8独立地为氢,任选取代的低级烷基,任选取代的低级烷氧基, 羟基,酰氧基或卤素; R9是氢,羟基,酰氧基,任选被取代的低级烷基,任选被取代的低级烷氧基或任选被取代的低级烷基氨基; E1是氢或酯残基; m为1〜4的整数, 或其药学上可接受的盐。 本发明化合物表现出磷脂酶A2抑制活性,可用于治疗炎性病症。