Ricoh Company, Ltd.

Hitoshi Namiki

Hiroshi Kobayashi

Ryouji Yamamoto

Masuyoshi Yachida

Eiichiro Yoshida

Yuki Takaya

Naoya Morita

A server includes circuitry to receive data from plural control devices of a plural users. The data from each control device includes consumption records of electric devices. The circuitry determines whether an amount consumed by the plural users is greater than one provided by producers, and based on a determination, calculates a reduction amount for each of one or more users, according to an order of a priority set on the plural users from a top to one until a condition is satisfied. For each of the one or more users, the circuitry determines, a specific electric device and a reduction amount of the specific electric device, based on the data and reference data, and generates consumption control data including information on the specific electric device and the reduction amount. The circuitry transmits to, each of specific control devices of the one or more users, the consumption control data.

Control server, tracking system, communication method, and non-transitory recording medium

A data generation apparatus includes a processor that executes a process including obtaining target data sequentially from time-series data, the target data including n (n being an integer greater than or equal to 2) data items in a predetermined section of the time-series data, calculating parameter information satisfying a (k&#x2212;1) order polynomial based on the target data, the (k&#x2212;1) order polynomial including k random values, k being an integer greater than or equal to 1 and less than n, associating the target data to the parameter information, outputting the target data and the parameter information associated to the target data, attaching a signature to secret information based on a secret distributed protocol. The secret information is calculable by using k pairs of data including the target data and the parameter information associated to the target data, and outputting the secret information attached with the signature.

Data generation apparatus, data recording system, and program product

A data processing apparatus includes a memory storing a program and a processor configured to execute the program to implement a process of reading signed data including a predetermined number (n) of secret sharing data sets generated for each section of time series data and a signature value calculated for the each section of time series data based on a secret sharing protocol. The n secret sharing data sets include n units of data acquired from each section of time series data and parameter information for a polynomial of a predetermined degree calculated based on the acquired n units of data. The processor further implements processes of acquiring the predetermined degree, and editing the signed data by extracting a specific number of the secret sharing data sets from the n secret sharing data sets for the each section of time series data according to the acquired predetermined degree.

Data processing system, data processing apparatus, and data processing method

A data generating apparatus is provided that includes a memory storing a program and a processor configured to execute the program to implement processes of sequentially acquiring n sets of data (where n is an integer greater than or equal to 2) included in a predetermined section of time series data and calculating, based on the acquired data, parameter information satisfying a polynomial of degree (k&#x2212;1) including k random numbers (where k is an integer greater than or equal to 1 and less than n); generating a signature value by adding a signature to secret information based on a secret sharing protocol, the secret information being calculable by acquiring k sets of the acquired data and the parameter information calculated based on the acquired data; and outputting output data including the signature value and a set of the acquired data and the parameter information calculated based on the acquired data.

Data generating apparatus, data generating method, and data recording system

An apparatus which includes one or more control modules, comprising: a state managing unit configured to manage a current state of the apparatus to control the control modules based on the current state, wherein the state of the apparatus is changed from one to another among a plurality of states with the passing of time; a storage unit configured to store state data for defining processes for controlling the respective control modules in response to a change of the state; and an data editing unit configured to edit the state data stored in the storage unit so as to change a process to be performed in a state among a plurality of states; wherein the state data includes respective state datum corresponding to each state in the plurality of states, and the state managing unit controls the control modules according to the state datum corresponding to the current state.

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Kanagawa, Japan

Hitoshi Namiki