201results about How to "Reliable read" patented technology

Methods and system of preventing unauthorized scripting. The invention includes providing one or more tests to a user for distinguishing the user from a machine when the user requests access to the server. By storing information on a correct solution to the test in a block of data and sending the block of data together with the test, the invention provides stateless operation. Moreover, maintaining a database of previously used correct responses prevents replay attacks. The invention also includes providing combinations of alternative tests, such as visually altered textual character strings, audible character strings, and computational puzzles. Other aspects of the invention are directed to computer-readable media for use with the methods and system.

Methods for preventing unauthorized scripting. The invention generates a human interactive proof to distinguish a human from a machine by generating a random set of characters and altering each of the characters individually to inhibit computerized character recognition. The invention also includes concatenating the altered characters into a character string to be rendered to a user as a test. The character string may be altered to further inhibit computerized character recognition. Other aspects of the invention are directed to computer-readable media for use with the methods.

The invention refers to a centrifugal separator comprising a stationary casing defining an inner space, a spindle and a rotating member, which is attached to the spindle and arranged to rotate around an axis of rotation with a rotary speed. The rotating member comprises a number of separating discs which are provided in the inner space. A drive member drives the spindle and the rotating member with said rotary speed. A sensor device senses the rotation of the rotating member in relation to the casing. The sensor device comprises at least one transmitter element which is provided in the inner space on the rotating member and a receiver element which is provided at the casing and arranged to sense the transmitter element. The receiver element is provided on the casing outside the inner space.

The present invention provides an image forming apparatus which forms a composite image obtained by combining a two-dimensional code image and an arbitrary image and having high discrimination. In an image forming routine executed by a CPU in the image forming apparatus, a converted arbitrary image is formed from a 256 gradation arbitrary image (S114) and a converted 256 gradation QR code image is formed from a QR code image (S100), a converted QR code image is formed from the QR code image (S116), and a composite image 40 obtained by combining the converted arbitrary image and the converted QR code image according to overlay at a position designate by an operator is formed (S120). Regarding first to fifth regions obtained by dividing 256 gradations from a shadow side to a highlight side, the converted arbitrary image and the converted QR code image are formed by converting gradations of pixels on the images to gradations in the second region.

A picture/character simultaneously displaying device includes: a picture display device for displaying a picture based on picture data; and a character display device for displaying characters synchronous with the picture based on character data. The character data contains therein text data about characters synchronous with a picture to be displayed, and metadata about characters to be displayed.

This present invention discloses one type of two-dimensional bar code and its encoding and decoding method. The two-dimensional bar code is represented as circular element modules (CEMs), between which there are spaces. As a CEM remains a CEM after deep defocusing imaging, it can be restored well to be the same shape as that of a CEM after the filtering by the Unsharp Mask. This design enables the image processing algorithm to become insensitive to the selection of the binarization threshold value. Since there is space between modules, it is less likely that the adjacent modules will stick together after binarization so that each module can be positioned independently. The present invention is very reliable for reading and decoding even under imaging conditions of deep defocusing and low illumination. Its features include easy-to-read, strong error correction capability and low requirement for reading devices, which makes it a potential popular application.

A method for detecting a two-dimensional bar code pattern using a bar code pattern reader, the bar code pattern being in the form of a matrix of rows and columns of data cells of either a first or second colour representing encoded data bits, and containing a set of at least two predetermined locating symbols at predetermined positions within the bar code pattern, wherein the method comprises the steps of: receiving a two-dimensional image containing the pattern, analysing the image to identify potential occurrences of the locating symbols within the image, validating the potential occurrences of locating symbols by analysing the potential occurrences to identify any set of occurrences whose size and relative positions within the image are consistent with the predetermined positions of the locating symbols within the bar code pattern, thereby identifying a set of locating symbols, and identifying the location of the bar code pattern within the image on the basis of the positions of the identified locating symbols. An apparatus for carrying out the method, and systems which utilise the bar code pattern, are also disclosed.

A force sensing touch screen input device is a solid assembly of multiple layers including a display with a touch-sensitive external surface, a first and second electrode layers separated by a compressible dielectric structure—forming a capacitive force-sensing array, and a rigid planar substrate. One or both electrode layers may be formed by metallizing a polymer surface of the rigid substrate or by creating a conductive electrode onto an internal surface of the display. To increase reliability, each layer is permanently adhered to or formed onto an adjacent layer over its entire surface, whereby preventing internal shifts therebetween. To increase response time, the cover glass flexibility, compressible dielectric structure and the gasket structure between the cover glass and the rigid planar substrates are selected to provide elastic compression and recovery during normal operating conditions.

A plurality of solid-state imagers is mounted in a reader, such as a bioptical, dual window, point-of-transaction workstation, for capturing illumination light returning along different fields of view from indicia. A controller controllably activates the imagers over respective exposure time periods during which the indicia are illuminated to produce electrical signals indicative of the indicia being read, processes the electrical signals to read the indicia, and controls the exposure time periods to be nonconcurrent to prevent interference among the imagers.

A bi-optical, dual window, point-of-transaction workstation images indicia associated with products with a single, solid-state imager that captures return light from the indicia over a field of view. A first optical subsystem is stationarily supported by the workstation and directs at least a part of the field of view of the imager as a first light collection region or regions passing through one of the windows. A second optical subsystem is also stationarily supported by the workstation and directs at least a part of the field of view of the imager as a second light collection region or regions passing through the other of the windows. A controller controls the imager and processes the captured return light in at least one of the light collection regions.