公开(公告)号：US20240086680A1

公开(公告)日：2024-03-14

申请号：US18223722

申请日：2023-07-19

Applicant: Hitachi, Ltd.

Inventor： Makoto TAKAHASHI ,  Takashi OSHIMA

IPC: G06N3/04 ,  G06N3/08

CPC classification number: G06N3/04 ,  G06N3/08

Abstract: A computing apparatus includes at least one computing device including a computation area. The computing apparatus acquires input information, generates a plurality of input feature maps from the input information, and performs DNN computation in parallel on the generated plurality of input feature maps by at least one DNN partitioning method including channel partitioning. In the channel partitioning, by grouping the feature maps into sets grouping the feature maps without partitioning the feature maps and allocating each set grouping the feature maps to each computation area, computation for layers is performed.

公开(公告)号：US20190293516A1

公开(公告)日：2019-09-26

申请号：US16258763

申请日：2019-01-28

Applicant: Hitachi, Ltd.

Inventor： Makoto TAKAHASHI ,  Yoshiyuki TAKAMORI

IPC: G01M3/04 ,  G01N21/43 ,  G02B6/42

Abstract: Provided are an optical sensor and an analyzer, including an optical sensor section in which a cladding layer of an optical fiber is removed so as to expose a core layer by a predetermined optical path length, and a protective material is added to a surface of the exposed core layer, the protective material having higher resistance to an organic solvent, base, or acid than that of the cladding layer; a light source device that causes light to enter one end of the optical fiber; a light receiving device that receives transmitted light emitted from another end of the optical fiber; and a control device that controls the light source device and the light receiving device to measure optical transmittance in the optical sensor based on a ratio of intensity of the light emitted from the light source device to intensity of the light received by the light receiving device.

公开(公告)号：US20180052011A1

公开(公告)日：2018-02-22

申请号：US15628706

申请日：2017-06-21

Applicant: Hitachi, Ltd.

Inventor： Takashi OSHIMA ,  Makoto TAKAHASHI ,  Yuki FURUBAYASHI

IPC: G01D5/24 ,  H03K17/975

CPC classification number: G01D5/24 ,  G01D3/02 ,  H03K17/975

Abstract: A CV conversion amplifier is provided that can secure a sufficient capacitance-to-voltage conversion gain and a sufficient amplitude range of an output voltage with a small consumption current. A capacitive sensor using the CV conversion amplifier is provided with low electric power, low noise, and a wide tolerance of input signals. The CV conversion amplifier accepts outputs, as inputs, from a first capacitance and a second capacitance whose capacitance is changed depending on a physical quantity and converts a capacitance value into a voltage.

公开(公告)号：US20180259364A1

公开(公告)日：2018-09-13

申请号：US15760723

申请日：2016-08-31

Applicant: Hitachi, Ltd.

Inventor： Yuki FURUBAYASHI ,  Takashi OSHIMA ,  Makoto TAKAHASHI

IPC: G01D5/241 ,  G01P15/125 ,  G01P15/08 ,  H03K17/955

CPC classification number: G01D5/241 ,  G01D5/24 ,  G01D5/2417 ,  G01P15/0802 ,  G01P15/125 ,  H03K17/955

Abstract: The present invention is directed to a CV conversion amplifier which is small in current consumption and capable of securing a sufficient capacitance-voltage conversion gain and a sufficient amplitude range of an output voltage and a capacitive sensor using the same which is low power consumption, low in noise, and wide in an input signal allowable range. A capacitive sensor includes first and second detection capacitors, a CV conversion circuit includes first and second feedback capacitors and obtains a voltage based on capacitance values of the first and second feedback capacitors, an AD converter performs analog digital conversion on an input voltage and obtains a digital signal, a digital control unit receives the digital signal as an input, and first and second digitally controlled variable capacitors have capacitance values that are controlled by the digital control unit.