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Title:
双方向シフトレジスタ
Document Type and Number:
Japanese Patent JP5261956
Kind Code:
B2
Abstract:

To provide a shift register in which shift register operation can be achieved in a small chip area and which can be operated only by rise (or fall) edge of a clock input.

When a control signal CK(36) is low and a control signal CKb(37) is high, an input signal D(11) is applied to the inverter 14 of a latch cell 13 through a switch 12, the output signal of the inverter 14 is reversed by an inverter 16 as the output of the latch cell 13 and becomes a shift output Q0(17). The switch 18 is operated at the point of time of fall of the control signal CKb(37), that is, at the point of time of rise of a clock input CK_in(34), and the output of the latch cell 13 is passed, in addition to an inverter 20 of a latch cell 19, the output of the inverter 20 becomes a shift output Q1(22) as the output of the latch cell 19. In the same way, the input signal D(11) is transmitted successively to shift output Q2(28), Q3(33).

COPYRIGHT: (C)2009,JPO&INPIT


Inventors:
Kohei Yamada
Application Number:
JP2007087960A
Publication Date:
August 14, 2013
Filing Date:
March 29, 2007
Export Citation:
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Assignee:
Fuji Electric Co., Ltd.
International Classes:
G11C19/28; G11C19/00; H03K3/037; H03K23/54
Domestic Patent References:
JP2003115194A
JP2001188520A
JP4176098A
JP6176593A
JP2137886A
JP2050397A
JP3224374A
JP11203859A
Attorney, Agent or Firm:
Yoshiyuki Osuga