公开(公告)号：US11468961B2

公开(公告)日：2022-10-11

申请号：US16921255

申请日：2020-07-06

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Kazuhito Tanaka ,  Masaki Maeda

IPC: G11C29/00 ,  G11C29/42 ,  G11C29/44 ,  G11C29/36 ,  G11C29/10

Abstract: A semiconductor memory device includes a data bus terminal group for outputting read data to an external device or inputting write data from an external device, a first terminal from or into which 1-bit data is output or input, a DBI circuit that executes a Data Bus Inversion (DBI) function, an error detection circuit that detects an internal error, and an information superimposing circuit that superimposes predetermined output information onto the 1-bit data to be output from the first terminal and the read data to be output from the data bus terminal group. The predetermined output information includes first output information indicating whether or not an output bit pattern of the data bus terminal group is inverted, and second output information indicating whether or not an internal error has been detected by the error detection circuit.

公开(公告)号：US09667972B2

公开(公告)日：2017-05-30

申请号：US14555825

申请日：2014-11-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiroshi Amano ,  Takeshi Tanaka ,  Masaki Maeda ,  Kenjiro Tsuda ,  Masayasu Iguchi ,  Youji Shibahara

IPC: H04N7/12 ,  H04N19/139 ,  H04N19/52 ,  H04N19/176 ,  H04N19/51 ,  H04N19/61 ,  H04N19/109 ,  H04N19/137 ,  H04N19/436 ,  H04N19/105 ,  H04N19/43

CPC classification number: H04N19/139 ,  H04N19/105 ,  H04N19/109 ,  H04N19/137 ,  H04N19/176 ,  H04N19/43 ,  H04N19/436 ,  H04N19/51 ,  H04N19/52 ,  H04N19/61

Abstract: When compression encoding processing of an image is performed in units of macroblocks using a pipeline structure, an application of a skip mode or the like according to MPEG4AVC to compression encode an encoding target block requires motion vectors and the like of adjacent blocks of the encoding target block. However, depending on a structure of the pipeline stages, the motion vectors may not be determined. In such cases, the skip mode cannot be applied to compression encode the encoding target block. This problem can be solved by (i) calculating all motion information candidates, of the encoding target block, corresponding to all motion information selectable by a previous block of the encoding target block, and (ii) selecting, as the motion information of the encoding target block in the skip mode, the motion information corresponding to the motion information determined for the previous block.