公开(公告)号：US20170338909A1

公开(公告)日：2017-11-23

申请号：US15521930

申请日：2015-10-21

Applicant: KOWA COMPANY, LTD.

Inventor： Tomohisa AZEGAMI ,  Tatsuya KIMBARA ,  Masatomo OHMAKI

IPC: H04L1/08 ,  H04B17/309

CPC classification number: H04L1/08 ,  H04B17/309 ,  H04L1/00 ,  H04L1/0006

Abstract: [Problem] To prevent either of two packet data having the same content from being affected by noise[Solution] A packet data transmission device (not shown) transmits first packet data 1A, . . . and second packet data 1B, . . . having the same content intermittently with an idle time I therebetween. When the length of the first and second packet data 1A, . . . , 1B, . . . is denoted by LP, the length of the idle time I is denoted by LI, the duration of low-frequency noise N is denoted by LN, the time with no low-frequency noise from the occurrence of one low-frequency noise N to the occurrence of the next low-frequency noise N is denoted by LC, the following expressions (1), (2) are satisfied. Consequently, either the first packet data or the second packet data is transmitted to a receiver without being affected by noise. LI>LN  (1) 2×LP+LI

公开(公告)号：US20190124293A1

公开(公告)日：2019-04-25

申请号：US16092015

申请日：2017-04-21

Applicant: KOWA COMPANY, LTD.

Inventor： Tomohisa AZEGAMI ,  Tatsuya KIMBARA

IPC: H04N7/08 ,  H04N5/247 ,  H04N17/00 ,  H04N7/10

Abstract: [Problem] To make a device compact and inexpensive by omitting a frame buffer.[Solution] First packet data PD1 that is sequentially received from a first camera C1 and second packet data PD2 that is sequentially received from a second camera C2 are alternately and sequentially transmitted to an external device 2 before data for one screen is accumulated. Therefore, a frame buffer for saving the data for one screen is not necessary, and a device can be made correspondingly more compact and less expensive.

公开(公告)号：US20230370186A1

公开(公告)日：2023-11-16

申请号：US18030567

申请日：2021-10-07

Applicant: KOWA COMPANY, LTD.

Inventor： Tomohisa AZEGAMI ,  Tomoya FUKUDA

IPC: H04J3/06 ,  H04N5/073

CPC classification number: H04J3/0652 ,  H04N5/0736

Abstract: Multiplexer (100) according to the present invention includes: an input unit (11) to which a plurality of image signals based on a first data communication standard are input, the image signals being acquired by respective imaging devices (2); an output unit (14) that outputs an image signal based on a second data communication standard having a data transfer rate lower than that of the first data communication standard; and a storage unit (12) that temporarily buffers the image signals input from the input unit (11). With such a multiplexer 100, it is possible to collectively convert the image data acquired by a plurality of imaging devices adopting a certain data communication standard into another data communication standard and suppress the data transfer delay caused by the conversion.

公开(公告)号：US20190342486A1

公开(公告)日：2019-11-07

申请号：US16474620

申请日：2018-01-30

Applicant: KOWA COMPANY, LTD.

Inventor： Tomohisa AZEGAMI

IPC: H04N5/232

Abstract: [Problem] To enable imaging to be performed with appropriate timing.[Solution] In a camera manipulation device 1 according to the present invention, a trigger signal T12 is issued and imaging is begun when a prescribed command is transmitted from a control circuit side to an imaging unit side (see S12). Because the issuance of such trigger signal T12 is not accepted before a character reception start command is issued, it is possible to perform imaging with appropriate timing.