A device and method for arranging book signatures or single sheets of paper in an inside each other stacked or side-by-side array in which a single mechanism may be utilized for either operation, dependent upon the relative position of the signature backbone in the holder magazine. A single transfer is employed with a triangularly shaped saddle above the collating tray. If signatures are fed, backbone first, to the cylinder, the signatures will be collated side-by-side in the collating tray; if ...

A system is disclosed for authenticating a signature on the basis of its execution. Generally, the system senses the speed of the tip of a writing instrument as a criterion for developing an identification or characterization of the signature. As disclosed, a tablet is provided defining a surface which is scored orthogonally to create impulses (by pen contact) that relate to the speed of the tip of a pen. The impulses are sensed as an electrical signal which is processed to derive a characteriza...

The object is to improve the accuracy of signature input and signature verification and improve security by causing the handwriting of a signature to disappear by itself. The signature verification system includes a signature input apparatus 1 and a signature verifying apparatus 6. Signature input apparatus 1 has an externally charged type liquid crystal sheet 2 which has an underside being adhesive and is placed on a coordinate input unit 3. When a dedicated pen 5 having the function of applyin...

A sheet feeder has a supply station wherein signatures fresh from the printing press are stacked. The stack is supported such that the signatures are in an arched, non-planar configuration. A sheet stripper extracts signatures successively from the stack and feeds them in a constant stream to a transfer conveyor. The stripper grips the sheets with a suction device which applies a constant but locally intermittent vacuum. The transfer conveyor carries the signatures to a delivery station. The del...

A method for generating a digital signature s of a message m using a secret key including at least two large prime numbers p, q is provided. It is provided that s is the zero of the polynomial P(x)-m modulo n, P(x) being any permutation polynomial modulo n.

An improved signature handling apparatus includes a plurality of signature feeders which are operatable to form groups of signatures on a conveyor. Detectors are associated with the signature feeders to detect a signature misfeed and a resulting defective group of signatures. The conveyor sequentially transports the groups of signatures to a delivery assembly which directs groups of signatures containing a predetermined number of signatures to a trimmer. The delivery assembly directs defective g...

A circuit test system using signature analysis allows random probing to detect faults in an assembly under test. Test points on a properly working assembly are probed at random and the signatures obtained are listed in a memory or storage media. Thereafter, when testing other boards these same test points are probed randomly and the signatures are compared to the list of possible good signatures. If a match is found a "pass" indication is generated and the operator tests another node. If a match...

A method to provide a highly intelligent automated diagnostic system that identifies the need to replace specific parts to minimize machine downtime rather than require extensive service troubleshooting. In particular, a systematic, logical test analysis scheme to assess machine operation from a simple sensor system and to be able to pinpoint parts and components needing replacement is provided by a series of first level of tests by the control to monitor components for receiving a first level o...

A method and apparatus for performing signature analysis of video data being output by a RAMDAC so that starting and stopping the sampling of data is made precise so that the data sampled is a known set. The invention uses a timing generator and signature analysis hardware integrated with a RAMDAC to start and stop the sampling and signature calculation of video data on frame boundaries. A signature capture request bit is used to request that the next frame be sampled and a signature calculated....

An improved signature verification method using dynamic signature characteristics in the frequency domain. Analysis of a signature in the frequency domain is employed when time domain analysis does not adequately distinguish between true signatures and forgeries. The preferred signature characteristics that are measured are two acceleration components of the pen, and the rate of change of axial pressure on the pen. More specifically, correlation functions operating on a sample and reference sign...