The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 04, 2011
Filed:
Nov. 12, 2010
Masaya Sumita, Hyogo, JP;
Masaya Sumita, Hyogo, JP;
Panasonic Corporation, Osaka, JP;
Abstract
In a dynamic flip-flop circuit with a data selection function, for example, when data having an H value has been selected using a selection signal S, a first node Nis L and a second node Nof a second dynamic circuitB is H, so that an output signal Q has an H level. In this case, when none of a plurality of pieces of data Dto Dis selected using selection signals Sto S, the first node Nis H, so that the electric charge of the second node Nis discharged and the output signal Q erroneously has an L level. However, in this case, an output node Nis H and a fourth node Nis L, so that an n-type transistor Trof the second dynamic circuitB is turned OFF, thereby preventing the second node Nfrom being discharged. Therefore, a normal operation is performed while securing a satisfactorily high-speed operation even when none of the pieces of data is selected. This circuit is used in a predetermined circuit, such as, for example, a forwarding path of a data path, a crossbar bus switch, or an input portion of a reconfigurable processing unit.