摘要:
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−1) order polynomial based on the target data, the (k−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.
摘要:
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.
摘要:
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−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.
摘要:
A data management system includes a detecting apparatus that detects an information processing apparatus and a server apparatus that controls access to data by the information processing apparatus. The detecting apparatus detects the information processing apparatus located within a predetermined area. The server apparatus includes a transmitter that transfers data to the detected information processing apparatus, the data being associated with access authority indicating whether or not the information processing apparatus is allowed to access the data, and circuitry that controls an access to the data from the detected information processing apparatus in accordance with the access authority associated with the data.
摘要:
A projection system includes a projection unit configured to project a projected image on a surface for projection; an image capturing unit configured to capture an image of an image-capturing area representing an area; an operation detection unit configured to detect any user operation on an operation target image representing a targeted image for the user operation by using the captured image; a calculation unit configured to calculate image-capturing area coordinates for specifying a position of the image-capturing area in the projected image based on the captured image and the projected image; a position determination unit configured to determine a position of the operation target image in the projected image based on the image-capturing area coordinates; and a projected image generating unit configured to generate a projected image in which the operation target image is laid out on the determined position.
摘要:
A content selection system, in which a management apparatus, a distribution apparatus and a wireless terminal are provided, includes the distribution apparatus's distribution unit for distributing, within a predetermined spatial range, location information indicating a location at which the distribution apparatus is installed; the wireless terminal's obtaining unit for obtaining the location information distributed by the distribution unit; the wireless terminal's transmission unit for transmitting the obtained location information to the management apparatus; the management apparatus's reception unit for receiving the transmitted location information; the management apparatus's determination unit configured to determine whether the received location information indicates a predetermined location; and the management apparatus's selection unit for selecting a content associated with the predetermined location for output thereat in response to the determination by the determination unit that the received location information indicates the predetermined location.
摘要:
A content selection system, in which a management apparatus, a distribution apparatus and a wireless terminal are provided, includes the distribution apparatus's distribution unit for distributing, within a predetermined spatial range, location information indicating a location at which the distribution apparatus is installed; the wireless terminal's obtaining unit for obtaining the location information distributed by the distribution unit; the wireless terminal's transmission unit for transmitting the obtained location information to the management apparatus; the management apparatus's reception unit for receiving the transmitted location information; the management apparatus's determination unit configured to determine whether the received location information indicates a predetermined location; and the management apparatus's selection unit for selecting a content associated with the predetermined location for output thereat in response to the determination by the determination unit that the received location information indicates the predetermined location.
摘要:
An information processing apparatus includes processing circuitry that acquires an electronic file containing first text data, and determines, based on the acquired electronic file, whether to use the first text data or second text data to perform a process. The second text data is generated through character recognition performed on an image contained in the acquired electronic file.
摘要:
An apparatus displaying a job screen indicating a job procedure, has a management unit that manages a job and a plurality of processes, a monitor unit that monitors an operation of an operator, a recorder unit that records an address of a job, an instructing unit that retrieves an address in response to a notification, determines whether to update the retrieved address in response to a type of a notified operation, and stores the updated address when the retrieved address has been updated, a storage unit that stores the job screen, and a control unit that reads the job screen and controls the read job screen, wherein the management unit retrieves the updated address, and instructs the display control unit to display the job screen, and wherein the display control unit reads out the instructed job screen.
摘要:
A removal method of manganese in which manganese is removed by precipitating manganese selectively from sulfuric acid waste water containing aluminum, magnesium and manganese with inhibiting the precipitation of magnesium.The removal method of manganese from waste water in which manganese is removed by precipitating manganese selectively from the sulfuric acid waste water containing aluminum, magnesium and manganese with inhibiting the precipitation of magnesium, characterized in that said waste water is subjected to the following steps (1) and (2). (1) First, aluminum in said waste water is removed. (2) Subsequently, neutralizing agent is added into the wastewater after removing aluminum, then pH of the waste water is adjusted at 8.0 to 9.0, and oxygen gas is blown.