Abstract:
PROBLEM TO BE SOLVED: To prevent forgery of a record by periodically receiving a challenge from an approval source by a camera or a recording device. SOLUTION: Unpredictable digital signal and challenge are periodically and simultaneously communicated by the approval source 10. These are received and stored by an approval challenge repository 20. Simultaneously, these are also received by a video camera assembly 25, and video signal 50 is digitalized by a digitalizer 55 and is stored in a large capacity storage medium 60 for the purpose of retrieval later on. Then, this output of the means 55 is also supplied to a digester 65, and is digested by using a hash function, so as to be transmitted via a transmitting means 70 to an approval digest repository 75, where the digested digital signal is stored together with its receiving time and other identification information. Consequently, when a length between recording time and certification time is shortened, a forger is asked for a large amt. of information, and hence simulation of recording the challenge in real time cannot be performed in such a brief time.
Abstract:
PROBLEM TO BE SOLVED: To provide a solution to the problem of decoherence that essentially accompanies a qubit. SOLUTION: A method (and structure) of coupling a qubit includes a step for locating the qubit near a transmission line approximately at a location corresponding to a node at a predetermined frequency. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a solution to a decoherence problem originally incidental to a qubit. SOLUTION: A method (and structure) for combining qubits includes a step arranging a qubit at a position almost corresponding to a node in a prescribed frequency in the vicinity of a transmission line. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
Quantum mechanical effect devices (1) incorporate means (3, 4) for interrupting the two-dimensional carrier gas of a modulation doped structure (2) to produce periodic potential variations which provide superlattice-like effects on current flowing nearby. The modulation doped structures (2) incorporate specialized structures (3, 4) displaced from a current path which simultaneously confine the two-dimensional carrier gas into a quasi-one-dimensional carrier gas and subject the thus confined carrier gas and current flowing therein to superlattice-like effects by inducing periodic potential variations along the current path. The induced variations are produced by etching corrugations in the device edges or by forming them in biasing gates (25).
Abstract:
Quantum mechanical effect devices (1) incorporate means (3, 4) for interrupting the two-dimensional carrier gas of a modulation doped structure (2) to produce periodic potential variations which provide superlattice-like effects on current flowing nearby. The modulation doped structures (2) incorporate specialized structures (3, 4) displaced from a current path which simultaneously confine the two-dimensional carrier gas into a quasi-one-dimensional carrier gas and subject the thus confined carrier gas and current flowing therein to superlattice-like effects by inducing periodic potential variations along the current path. The induced variations are produced by etching corrugations in the device edges or by forming them in biasing gates (25).