Patent application number | Description | Published |
20090219062 | BUFFER CIRCUIT AND PHOTORECEIVING CIRCUIT USING THE SAME - A buffer circuit includes a first transistor having a base connected to a first power supply, an emitter as a current signal input node, and a collector as a current signal output node, a second transistor having a base connected to the first power supply, a first constant current circuit using a difference between outgoing current from the emitter of the first transistor and an input current at the current signal input node as a constant current, and determining outgoing current from the emitter of the second transistor as a current same as the constant current; and a first mirror circuit that makes a collector current of the first transistor equal to a collector current of the second transistor in which the first mirror circuit has a third transistor with a collector connected to the collector of the first transistor and a fourth transistor with a collector connected to a collector of the second transistor, a first operating point voltage is provided to the current signal output node between the third transistor and the first transistor, and a second operating point voltage based on the first operating point voltage is provided to a node between the fourth transistor and the second transistor. | 09-03-2009 |
20110032004 | Light-receving circuit and semiconductor device having same - A light-receiving circuit includes a photodiode that converts an input optical signal to a current signal; a current-voltage converting circuit that outputs an output voltage signal obtained by adding a reference voltage to a voltage signal proportional to the current value of the current signal; and an input current limiting unit that supplies the current-voltage converting circuit with the current signal upon limiting the current value of this current signal based upon the reference voltage in such a manner that the output voltage signal will not exceed a constant value irrespective of the value of the reference voltage. | 02-10-2011 |
20140117212 | SEMICONDUCTOR DEVICE - A semiconductor device that includes: a first trans-impedance amplifier that converts a first current signal generated by a first photodiode, into which an optical signal is input, into a first voltage signal; a second trans-impedance amplifier that converts a second current signal generated by a second photodiode, to which an optical signal is blocked, into a second voltage signal; a peak hold circuit that holds the peak value of the first voltage signal; a comparator that outputs a pulse on the basis of the first and second voltage signals; and a threshold current setting circuit that draws out a threshold current, which is proportional to a reference current generated on the basis of a voltage difference between a peak voltage output by the peak hold circuit and a reference voltage at the output node of the second photodiode, from the connection between the second photodiode and the second trans-impedance amplifier. | 05-01-2014 |
20150333841 | OPTICAL COUPLING CIRCUIT, LIGHT-RECEIVING APPARATUS OF OPTICAL COUPLING CIRCUIT AND SIGNAL PROCESSING DEVICE - A light-emitting unit outputs an optical signal corresponding to an input electric signal. A light-receiving unit is electrically insulated from the light-emitting unit and outputs an electric signal according to the received optical signal as an output signal. In the light-receiving unit, a first light-receiving device outputs an optical current according to the optical signal. A second light-receiving device is provided not to receive the optical signal. A current duplication circuit duplicates a current flowing through the second light-receiving device. A current-voltage conversion circuit converts a current, which is generated by subtracting the current duplicated by the current duplication circuit from a current flowing through the first light-receiving device, into a voltage signal. A comparator output a result of a comparison between the voltage signal converted by the current-voltage conversion circuit and a threshold voltage as the output signal. | 11-19-2015 |
Patent application number | Description | Published |
20090284777 | IMAGE PROCESSING APPARATUS, METHOD, AND COMPUTER-READABLE MEDIUM STORING THE PROGRAM THEREOF - An image processing apparatus receives page description data, converts the page description data, thereby generating first intermediate data that is described for each object, converts the first intermediate data, thereby generating second intermediate data that is described with edge information of an object, stores, in a storage area, data representing drawing position information of an object, determines whether the object overlaps with and is located behind another object, in the case where it is determined that the object is located behind another object, performs character recognition processing on the first intermediate data, whereas in the case where it is determined that the object is not located behind another object, performs character recognition processing on the second intermediate data. | 11-19-2009 |
20090284787 | OUTPUT EFFICIENCY OF PRINTER FORMING IMAGE BY INTERPRETING PDL AND PERFORMING OUTPUT BY USING PRINT ENGINE - A printer according to the present invention receives a PDL via a network. Thereafter, the printer creates metadata by interpreting the received PDL and extracting rendering attribute information used in each page. The printer generates vector data from the PDL. Based on setting information on the printer, the printer generates a display list from the vector data. The generated vector data, display list and metadata are stored in a storage device in the printer in association with each other. Thus, output efficiency is improved. | 11-19-2009 |
20100020338 | PRINTING APPARATUS, CONTROL METHOD, AND STORAGE MEDIUM - A printing apparatus determines the resolution of bitmap copy-forgery-inhibited pattern image data included in transmitted print data, and decides whether to print the bitmap copy-forgery-inhibited pattern image data onto a sheet based on the determination result. | 01-28-2010 |
20100265543 | IMAGE FORMING APPARATUS, METHOD OF CONTROLLING THE SAME AND PROGRAM OF THE SAME - An image forming apparatus comprises a reception unit configured to receive the print job from the external apparatus, a unit configured to spool the received print job, a development unit configured to develop the spooled print job to a printable data, a unit configured to detect network disruption in the network, and a control unit configured to, in a case of detecting the network disruption in the middle of spooling and developing the received print job, stop the development of the print job for a stop state and set a subsequent print job which is not in the stop state as an object of the development. | 10-21-2010 |
20120013946 | PRINTING SYSTEM, PRINTING METHOD, AND RECORDING MEDIUM - In tandem printing, in accordance with a printing process executed in one printing apparatus, the printing process in the other printing apparatus is automatically changed. The first printing apparatus inputs a third print job including a first print job and a second print job. An image is formed on the basis of the first print job, and on the basis of a result of the image formation, a page with a change amount in the characteristic of a recording medium after printing at a predetermined threshold value or more is detected. The second print job in which the information is changed in accordance with the change amount in the characteristic of the detected page is transmitted to the second printing apparatus. | 01-19-2012 |
20130234932 | INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING SYSTEM CONTROL METHOD, INFORMATION PROCESSING APPARATUS, AND STORAGE MEDIUM - An information processing system determines a relationship between an observer and an observation target person based on personal information of the observer and personal information of the observation target person, and displays content information generated based on the determined relationship together with an image of the observation target person in a display area of a display unit. | 09-12-2013 |
20150249752 | IMAGE PROCESSING SYSTEM, IMAGE PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AND STORAGE MEDIUM - The present invention is directed to a technique for preventing accidental removal of a print product, including the case of one portion of the print product being pulled out, without keeping a user waiting for print output. An image processing system includes an output unit configured to output, to a monitoring tray, an output result of a print job to which a monitoring attribute is allocated, an imaging unit configured to capture a video of the monitoring tray, a detection unit configured to detect motion in an output product region of the monitoring tray, based on the video captured by the imaging unit, and a warning information output unit configured to output warning information in a case where the detection unit detects motion in the output product region. | 09-03-2015 |