13 results about "Digital data" patented technology

A method for processing a digital input image data indexed to represent positions on a display such that the digital data is indicative of an intensity value for each position. The intensity value for each position is adjusted to generate an enhanced value based on retinex theory by operating only on a luminance channel to essentially eliminate shading and color distortion problems.

A method and system for secured broadcasting of a digital data flow between a technical platform (1) and at least one terminal (2), characterized in that it comprises the following steps:transmitting a scrambled and multiplexed digital data flow with at least one message (ECM) including a control key (CW) encrypted by a channel key (CC);descrambling in a secured memory area of the terminal (2) the scrambled digital data flow from the control key (CW) obtained according to the following substeps;sending to the technical platform (1) a request including the identifier (IUi) of the terminal (2);generating a secret key (CSk) from a cryptographic mechanism (A) using a single ciphering key (BSKn) and the identifier (IUi) of the terminal (2) with view to ciphering said channel key (CC) and obtaining a message (eCCk);deciphering the message (eCCk) received by a terminal (2) from the key (CSk) initially stored in the terminal (2) so as to obtain the channel key (CC), andobtaining the control key (CW) resulting from the deciphering of the message (ECM) from the channel key (CC).

The invention discloses an electric energy quality monitoring method and device based on a power distribution room, and the method comprises the steps of collecting an electric energy low-voltage signal on a bus in the power distribution room, obtaining electric energy specific data through discrete filtering processing and data linear correction processing, and further obtaining electric energy digital data and an electric energy frequency spectrum. The device comprises a data input module, a discrete filtering module, a linear correction module and a data output module; the data input module is used for acquiring an electric energy low-voltage signal on a bus in the power distribution room; the discrete filtering module is used for performing discrete filtering processing on the electric energy low-voltage signal; the linear correction module is used for performing data linear correction processing on the electric energy stable data; the data output module is used for generating electric energy digital data and electric energy spectrum. According to the invention, the stability and anti-interference capability of data can be ensured, and high-speed monitoring and analysis are realized; the detection data are high in accuracy and reliable.

A system and method for the encoding of schedule data on a computing device and the retrieval, sharing and presentation of the schedule data on mobile computing devices is presented. The recurrent static portion of the schedule data is encoded by the computing device in a first two dimensional barcode image. Dynamic event data is encoded by the computing device in a second two dimensional barcode image, the second image containing only numeric data. The first and second images are acquired for processing by the mobile computing device which may display the barcode images for subsequent acquisition and processing by a second mobile computing device.