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Inventor:
Yoshikawa; Hiroyuki
Address:
Tokyo, JP
No. of patents:
12
Patents:




Patent Number Title Of Patent Date Issued
7443261 Phase modulating apparatus, communication device, mobile wireless unit, and phase modulating met October 28, 2008
A multimode-based phase modulating apparatus capable of reducing the degradation of modulation precision and suppressing the unnecessary power consumption. This apparatus has a switch for switching the modulation modes of a PLL circuit between a single-point modulation and a double-p
5623713 Self-reparir type image forming apparatus utilizing functional representation April 22, 1997
The present invention makes it possible to make good self-repair on which little secondary effect is exerted by calculating a manipulated variable of a parameter at the time of the repair by a functional amount in an image forming apparatus having a self-repair function. When a fault
5613047 Apparatus having self-repairing function and method of self repairing the same March 18, 1997
According to the present invention, a concept of functional quantities indicative of quantified functional degrees of such lower-level functions as "clearer characters", "cleaner background", and "thicker characters", which are subordinating to a qualification-oriented function of "more
5548682 Method of automatically creating control sequence software and apparatus therefor August 20, 1996
A method of automatically creating control sequence software required for a machine system controlled by a computer includes four algorithms, that is, "derivation of control sequence specification".fwdarw."derivation of a qualitative control sequence".fwdarw."addition of quantitative inf
5515503 Self-repair system for an image forming apparatus May 7, 1996
The present invention makes it possible to effectively make self-repair of a fault by referencing repair analysis cases. The cases are hierarchically classified according to the fault symptom, the fault and the class, and a case suitable for a fault developed is selected to perform repai
5467355 Image forming apparatus provided with self-diagnosis system November 14, 1995
In an image forming machine, an objective model storage device stores parameter data that represent elements of the machine and relationships among such parameters, and parameter membership functions, and fault diagnosis knowledge. A degradation storage device stores a fuzzy qualitat
5463545 Functional redundancy control system October 31, 1995
A so-called "softly broken apparatus" by constructing a self-repair apparatus based on functional redundancy. An apparatus is represented in a form including a function using an FBS diagram (a diagram comprising functions, behaviors and states). When a fault occurs, a function lost is
5452438 Image forming apparatus provided with self-diagnosis and self-repair system September 19, 1995
The amount of degradation, converted into a fuzzy qualitative value, is found on the basis of state data sensed by sensors 1a, 1b and 1c and degradation data. The value of a parameter changed by the amount of degradation is represented by a fuzzy qualitative value. In addition, the s
5446523 Image forming apparatus having self-repair function and self-repair method for the apparatus August 29, 1995
In an image forming apparatus according to the present invention, a software portion incorporated in the apparatus is provided with a virtual case storage portion 12, to previously create virtual cases by a virtual case compiler 16 outside of the apparatus and store the virtual cases.
5396314 Image forming apparatus having functional redundancy system March 7, 1995
An image forming apparatus has a functional redundancy system by which an inherent function normally performed by a certain portion is performed as a potential function by another portion, when such certain portion no longer can be perform its inherent function. In a first operative
5239547 Self-diagnosis and self-repair system for image forming apparatus August 24, 1993
The system of the present invention has a plurality of sensors 1a, 1b and 1c and a system control circuit which includes a case memory portion and a work script memory portion. In response to application of state data from the sensors 1a, 1b and 1c, the system converts the state data int
5166934 Self-diagnois and repair system for image forming apparatus November 24, 1992
A system according to the invention has a plurality of sensors, a system control circuit and a plurality of actuators. State data, supplied from the sensors, is compared with characteristic data in the system control circuit. From this comparison, it is judged whether a fault has occurre


 
 
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