Hitachi, Ltd.

Sony Corporation

Hitachi Industry & Control Solutions, Ltd.

Hitachi Information & Control Solutions, Ltd.

Toshiki Shimizu

Yusaku Otsuka

Hidenori Omiya

Iori Kobayashi

Noritaka Matsumoto

Tatsuya Maruyama

Eiji Kobayashi

Yusuke Seki

Yasuhiro Kiyofuji

Satoru Funaki

Akihiro Onozuka

Shoji Yunoki

Manabu Sasamoto

Akira Bando

Wataru Sasaki

Masahiro Shiraishi

Shin Kokura

Masakazu Ishikawa

Teruaki Sakata

Masashi Suenaga

Kazunori Uemura

Jumpei Kura

Naoya Mashiko

Hideaki Masuko

Yu Iwasaki

Takahiro Ohira

Mariko Fukuyama

Ravneet Kaur

Akihiro Nakano

Shoichi Ozawa

Yuta Sugimoto

Kazutaka Onishi

Taisuke Ueta

Yukiko Tahara

Yuusaku Ootsuka

Hidenori Oomiya

A method for computing and detecting image data drift. The method may include retrieving first segment information of a plurality of segments from a drift database; receiving a number of images from a sensor; partitioning each of the received images into segments of a predetermined number; generating second segment information; computing drift in values between the first segment information and the second segment information; and detecting drift based on the computed drift in values by combining the computed drift in segments to generate overall drift, and comparing the overall drift against a drift threshold.

Method to compute drift in image data before ml model inference

A control system in which a plurality of controllers and a redundant controller are connected to a common network, the plurality of controllers are divided into a highly available controller and other normal controllers, the redundant controller obtains context data of the highly available controller to hold the context data in a memory, holds programs of the plurality of controllers in a non-volatile memory, and holds the program of the highly available controller in the memory, and an arithmetic unit substitutes processing of the highly available controller by using the context data and the program of the highly available controller held in advance in the memory when a failure occurs in the highly available controller.

Control system and control method therefor

A method, and apparatus for implementing the method, of resource allocation for a communication session in a network that connects a terminal device and a control device via one or more base stations is discussed herein. The method may include storing identifiers of a set of communication objects associated wide the terminal device. The method may further include acquiring information regarding a first set of resources associated with a first communication session for a first communication object in the set of communication objects. The method may also include allocating a second set of resources associated with a second communication session for a second communication object in the set of communication objects, where the second set of resources comprises a disjoint set of resources from the first set of resources.

Redundant communication system

In the conventional distributed control system, since each control device updates the data area at a timing when a control packet is received, in a case where there is a difference in communication delay between the control devices or in a case where the communication delay includes jitter, it is difficult to match the contents of data in all the control devices in a case of focusing on a certain moment during system operation. Therefore, depending on the start timing of a control application, the control application operates on the basis of different data between the control devices, thus limiting control performance improvement. Accordingly, time slots on the network are allocated according to the result of a calculation unit, and a cyclic memory synchronization update unit synchronizes the timing of reflecting data in the input/output and the cyclic memory and the timing of using data of a cyclic memory.

Control device and distributed control system

Example implementations described herein are directed to a plurality of control functions connected via a communication network and synchronized, where the control functions communicate packets including control data, the function identifier for the function associated with the control data, and time identifier such as a time identifier representing the synchronized time associated with the control data. Example implementations determine control data associated with the function identifier and the time identifier from one or more packets that has the same function identifier and time identifier, received in the certain time period based on the time specified by the time identifier.

Redundant control system

Example implementations described herein generate plans for the deployment of functions involving the distribution function and the allocation of network resources based on the requirements of the distributed functions on the control system and the network information constituting the control system. Example implementations involve gathering requirements of the distributed functions constituting the distributed control system, information of the network, and information of the plurality of communication devices, and generating a plan for deployment of the distributed functions to corresponding ones of the plurality of communications devices and allocation of network resources to the corresponding ones of the plurality of communication devices based on the gathered requirements and the information of the network.

Control network planning

A communication control device of a communication system collects information of a first control device in a second control device via a relay device on a network. Allocation of network resources of the network is controlled based on a procedure of processing the collected information.

Communication control device, communication control method, and communication system

The present invention provides a duplexed operation processor control system that includes operation processors, an I/O device, and at least one communication path that couples the operation processors to the I/O device, and at least one communication path that couples the operation processors with each other. The duplexed operation processor control system switches over either of the operation processors to be a primary operation processor that executes a control operation for a control target, and the other to be a secondary operation processor that is in a stand-by state, and the secondary operation processor snoops control data synchronously when the primary operation processor acquires the control data from the control target.

Duplexed operation processor control system, and duplexed operation processor control method

A failure is detected immediately and certainly, and continuation of processing in an unstable state is prevented. A first error detection code is generated from first information which is output as a result of execution of a predetermined program conducted by a first processor. A second error detection code is generated from second information which is output as a result of execution of the program conducted by a second processor which is configured so as to output the same computation result as that of the first processor. It is detected whether the first information is the same as the second information, and it is detected whether the first error detection code is the same as the second error detection code. Writing the first information or the second information into a main memory is controlled on the basis of a result of the detection.

Control apparatus and control method

An evaluation value calculating apparatus includes the following elements. A difference metric selecting unit selects a difference metric for a specific recorded sequence in recorded sequences obtained in a maximum likelihood decoding process when information expressed with marks and spaces on a recording medium is played back, the difference metric being obtained in the maximum likelihood decoding process. A difference metric error value calculating unit determines a difference metric error value for the selected difference metric using a calculation method that is selected according to an edge shift direction of each of the marks on a time axis, the difference metric error value representing an error from an ideal difference metric and the edge shift direction on the time axis. A statistical processing unit performs statistical processing on the determined difference metric error value on the basis of each of states of path meeting points to generate an evaluation value.

Evaluation value calculating apparatus, recording and playback apparatus, evaluation value calculating method, recording method

Growing community of inventors

Tokyo, Japan

Toshiki Shimizu