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Document Type and Number:
Japanese Patent JPH0377690
Kind Code:
B2
Abstract:
PURPOSE:To remove the limit of the maximum operating frequency of the circuit, by picking up the feedback signal from before n bits so that the delay time of the feedback can be neglected and making feedback with a delay, in a binary sequence circuit in which a plurality of FF circuits are in cascade connection. CONSTITUTION:FF circuits FF11-F13 are in cascade connection, the feedback signal is picked up from the output of FF11 and FF12 and it is fed to the delay line DL1 from the OR gate circuit G12, and delay is given by Td1 corresponding to one- bit's share and feedback input is made to the 1st stage FF11 of FF circuit. In comparison with the case that both the outputs of FF2, FF3 in FF circuit are fed directly back to FF1 conventionally, the delay time at the feedback circuit can be neglected by the feedback point before one bit, and high-speed operation can be made up to the toggle frequency of FF circuit.

Inventors:
TODA YOSHIFUMI
MORITA TOSHUKI
ITO HIDEAKI
HODOHARA KYOAKI
Application Number:
JP3267080A
Publication Date:
December 11, 1991
Filing Date:
March 17, 1980
Export Citation:
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Assignee:
FUJITSU LTD
International Classes:
H03K3/84; H03K23/54



 
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