Patents by Inventor Hiroshi Iwasa
Hiroshi Iwasa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8502899Abstract: In a reference signal comparison AD conversion scheme, a reference signal SLP_ADC and each of P and D phases of a pixel signal voltage Vx are compared. A count clock CKcnt1 is counted based on the comparison result. The counting result data is converted into signal data Dsig, i.e., the difference between the P and D phases, which is also subjected to CDS. At this time, the n-bit AD conversion is performed on each of the P and D phases of the pixel signal voltage Vx, followed by summation for digital integration. This prevents any possible detrimental effects that may be caused by summation in the analog domain. Although the signal data becomes W times greater, noise will likely become ?W times greater. This alleviates the problem of random noise resulting from AD conversion such as quantizing noise and circuit noise that do not exist in the analog domain, thus reducing the noise.Type: GrantFiled: June 4, 2009Date of Patent: August 6, 2013Assignee: Sony CorporationInventors: Hayato Wakabayashi, Masaru Kikuchi, Hiroshi Iwasa, Yuuki Yamagata
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Patent number: 8411186Abstract: A solid state imaging device includes: an AD conversion section having one comparison section, which receives a reference signal from a reference signal generator that generates the reference signal whose level gradually changes and which compares the reference signal with an analog signal to be processed, and one counting section, which receives a count clock for AD conversion and performs a count operation on the basis of a comparison result of the comparison section, for each of M signal lines to which the signal is supplied and that acquires the signal on the basis of output data of the counting section; an operation period control section controlling an operation period of the counting section on the basis of the comparison result; and a control section performing control regarding which of the signals, which are supplied through the M signal lines, is to be processed and which one of m levels of the signals to be processed is to be processed and controlling the processing order.Type: GrantFiled: August 25, 2010Date of Patent: April 2, 2013Assignee: Sony CorporationInventor: Hiroshi Iwasa
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Publication number: 20120274875Abstract: In a backlight using an LED, area control is performed such that the backlight is lit only in the bright area of the screen and the backlight is not lit in the dark area. The temperature change in the light emission efficiency of the LED is large. The temperature of the lit LED is high in area control, so that when a completely gray screen is displayed after the area control, the light emission efficiency of the LED decreases in the previously illuminated area, resulting in the occurrence of uneven brightness. The present invention prevents the uneven brightness of the screen in area control, by reducing the temperature change in the light emission efficiency of the LED to 5% or less, and more preferably 3% or less, in a temperature range of 50° C. to 90° C.Type: ApplicationFiled: April 23, 2012Publication date: November 1, 2012Inventors: KOICHI SAKITA, Makoto Tsumura, Hiroshi Iwasa, Susumu Ishida
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Patent number: 8259200Abstract: An imaging apparatus includes: an imaging section receiving color light and interpolation light including at least a part of a wavelength range of the color light in order to interpolate the brightness of the color light and converting the received color light and interpolation light into a signal; a control section controlling a first exposure time of the color light and a second exposure time of the interpolation light separately according to the brightness of an object to be imaged; and an image creating section creating an image on the basis of a color signal, which is output when the imaging section receives the color light, during the first exposure time controlled by the control section and on the basis of an interpolation signal, which is output when the imaging section receives the interpolation light, during the second exposure time controlled by the control section.Type: GrantFiled: January 27, 2010Date of Patent: September 4, 2012Assignee: Sony CorporationInventor: Hiroshi Iwasa
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Publication number: 20120194607Abstract: An inkjet printing apparatus 100 includes an inkjet head holder 11 holding inkjet heads 2, and a pair of head cap holders 12 and 13 holding head caps 3. When the inkjet head holder 11 is in a raised position, the head cap holders 12 and 13 are arranged as horizontally juxtaposed in a capping position, where the respective inkjet heads 2 and the respective head caps 3 are opposed to each other, below the inkjet head holder 11. When the inkjet head holder 11 is in a lowered position, the head cap holders 12 and 13 are arranged as vertically superposed in a withdrawn position laterally of a vertical movement area of the inkjet head holder 11.Type: ApplicationFiled: November 28, 2011Publication date: August 2, 2012Inventors: Hiroshi IWASA, Hiroyuki Fuchioka, Takeshi Katayama, Ryoichi Naoe
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Publication number: 20120139885Abstract: According to the present invention, area control of a liquid crystal display device prevents luminance insufficiency attributing to leaking of illumination light between adjacent areas. A peak luminance detector detects a peak luminance area in which a luminance level is equal to or higher than a first threshold. A peripheral luminance detector detects luminance levels of peripheral areas located adjacent to the peak luminance area. When the average of the luminance levels of the peripheral areas is equal to or lower than a second threshold, a peak luminance corrector increases a light source luminance level of a backlight cell that corresponds to the peak luminance area.Type: ApplicationFiled: November 15, 2011Publication date: June 7, 2012Inventors: Hiroshi IWASA, Hidenao Kubota
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Publication number: 20110316766Abstract: A cross section of each divided light guiding plate is formed in a wedge shape, a step is formed at a portion of each divided light guiding plate where LEDs are arranged, and holes used for accommodating the LEDs are formed at the step. A plated face is formed on a lower face of each LED, and is coupled to a wiring substrate through solder. Each LED includes a light-emitting face, a lower frame, and an upper frame. The height of the lower frame of each LED is larger than the height of the upper frame, so that a lower end of the light-emitting face of each LED can be always located higher than a lower end of the divided light guiding plate.Type: ApplicationFiled: April 20, 2011Publication date: December 29, 2011Inventors: Hidenao KUBOTA, Satoshi Ouchi, Hiroshi Iwasa, Mayumi Nagayoshi, Hajime Inoue
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Patent number: 8085288Abstract: A CTP system is provided, which allows its continuous use even if some of laser diodes located at dispersed sites are in a non-light emitting state due to breakage or the like. In the case where some channels are in the non-light emitting state, channel-by-channel exposure data is generated to describe the way that exposure should be performed by use of specific light-emitting channels that are determined by the locations of non-light emitting channels, while an exposure head is moved also through (a) complementary interval(s) before and/or after a standard interval, the standard interval being the interval the exposure head is moved through in normal mode. Then, the transport unit moves the exposure head through the standard interval and through the complementary interval(s), during which period the exposure controller causes the specific light-emitting channels to emit exposure light according to the channel-by-channel exposure data, thereby forming an exposed area.Type: GrantFiled: April 15, 2008Date of Patent: December 27, 2011Assignee: Dainippon Screen Mfg. Co., Ltd.Inventors: Satoshi Yasuda, Mamoru Fujimoto, Hiroshi Iwasa
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Publication number: 20110285354Abstract: This invention offer a rechargeable-battery controlling device and an independent power system that is cheap and low power consumption. First current is created by amplifying and copying current flow through one diode or plural serially connected diodes, and first voltage is created by flowing said first current through resistance load and converting to voltage, and switching element is on-off-controlled by said first voltage, and the switching element works to prevent overcharge and overdischarge. This detects an alteration of voltage and the device protects from overcharge and overdischarge. By this, by small parts, the protection circuit for overcharge and overdischarge can be realized and power consumption can be suppressed.Type: ApplicationFiled: April 20, 2011Publication date: November 24, 2011Inventor: Hiroshi Iwasa
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Publication number: 20110228196Abstract: The present invention enables a liquid crystal display device using LEDs as a light source to reduce uneven brightness, increase efficiency of heat discharged from the LEDs, and provide area brightness control. The liquid crystal display device includes a liquid crystal display panel and a backlight. The backlight includes a light guide panel and a plurality of LEDs arranged on a line. The light guide panel includes a concave portion extending in a longitudinal direction of the light guide panel. A large number of LEDs are placed in the concave portion of the light guide panel. The plurality of LEDs arranged on a line emit light alternately in opposite directions. This configuration allows for uniform brightness distribution without forming a large number of concave portions in the light guide panel. Further, this configuration also allows for area brightness control by controlling a large number of LEDs by group.Type: ApplicationFiled: October 28, 2010Publication date: September 22, 2011Inventors: Hidenao KUBOTA, Hiroshi Iwasa, Koichi Sakita
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Publication number: 20110080507Abstract: A solid state imaging device includes: an AD conversion section having one comparison section, which receives a reference signal from a reference signal generator that generates the reference signal whose level gradually changes and which compares the reference signal with an analog signal to be processed, and one counting section, which receives a count clock for AD conversion and performs a count operation on the basis of a comparison result of the comparison section, for each of M signal lines to which the signal is supplied and that acquires the signal on the basis of output data of the counting section; an operation period control section controlling an operation period of the counting section on the basis of the comparison result; and a control section performing control regarding which of the signals, which are supplied through the M signal lines, is to be processed and which one of m levels of the signals to be processed is to be processed and controlling the processing order.Type: ApplicationFiled: August 25, 2010Publication date: April 7, 2011Applicant: Sony CorporationInventor: Hiroshi Iwasa
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Publication number: 20110074994Abstract: In a reference signal comparison AD conversion scheme, a reference signal SLP_ADC and each of P and D phases of a pixel signal voltage Vx are compared. A count clock CKcnt1 is counted based on the comparison result. The counting result data is converted into signal data Dsig, i.e., the difference between the P and D phases, which is also subjected to CDS. At this time, the n-bit AD conversion is performed on each of the P and D phases of the pixel signal voltage Vx, followed by summation for digital integration. This prevents any possible detrimental effects that may be caused by summation in the analog domain. Although the signal data becomes W times greater, noise will likely become ?W times greater. This alleviates the problem of random noise resulting from AD conversion such as quantizing noise and circuit noise that do not exist in the analog domain, thus reducing the noise.Type: ApplicationFiled: June 4, 2009Publication date: March 31, 2011Applicant: SONY CORPORATIONInventors: Hayato Wakabayashi, Masaru Kikuchi, Hiroshi Iwasa, Yuuki Yamagata
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Publication number: 20100194938Abstract: An imaging apparatus includes: an imaging section receiving color light and interpolation light including at least a part of a wavelength range of the color light in order to interpolate the brightness of the color light and converting the received color light and interpolation light into a signal; a control section controlling a first exposure time of the color light and a second exposure time of the interpolation light separately according to the brightness of an object to be imaged; and an image creating section creating an image on the basis of a color signal, which is output when the imaging section receives the color light, during the first exposure time controlled by the control section and on the basis of an interpolation signal, which is output when the imaging section receives the interpolation light, during the second exposure time controlled by the control section.Type: ApplicationFiled: January 27, 2010Publication date: August 5, 2010Applicant: Sony CorporationInventor: Hiroshi Iwasa
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Publication number: 20090316015Abstract: A solid-state image pickup device includes: comparators; counters; and a control portion for carrying out control in such a way that in a phase of an addition mode, the two comparators and the two counters corresponding to the two pixel columns, respectively, are set as a unit, 1 is added to a second digit of one counter of the two counters when both the comparison results from the two comparators has a first logic, 1 is added to a first digit of the one counter when one of the comparison results from the two comparators has the first logic, and 1 is added to none of the first digit and the second digit of the one counter when both the comparison results from the two comparators has a second logic.Type: ApplicationFiled: June 2, 2009Publication date: December 24, 2009Applicant: Sony CorporationInventors: Hiroshi Iwasa, Satoshi Ogata
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Publication number: 20080259301Abstract: A CTP system is provided, which allows its continuous use even if some of laser diodes located at dispersed sites are in a non-light emitting state due to breakage or the like. In the case where some channels are in the non-light emitting state, channel-by-channel exposure data is generated to describe the way that exposure should be performed by use of specific light-emitting channels that are determined by the locations of non-light emitting channels, while an exposure head is moved also through (a) complementary interval(s) before and/or after a standard interval, the standard interval being the interval the exposure head is moved through in normal mode. Then, the transport unit moves the exposure head through the standard interval and through the complementary interval(s), during which period the exposure controller causes the specific light-emitting channels to emit exposure light according to the channel-by-channel exposure data, thereby forming an exposed area.Type: ApplicationFiled: April 15, 2008Publication date: October 23, 2008Inventors: Satoshi Yasuda, Mamoru Fujimoto, Hiroshi Iwasa
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Patent number: 7230636Abstract: A gas is generated from a printing plate by exposure of the printing plate. A gas diffusing suction unit jets air from air jet ports to diffuse the gas generated from the printing plate by irradiation of laser light. The gas diffused by the air is sucked along with the air from a gas suction opening of the gas diffusing suction unit. At this time, a gas suction velocity is set to 1.2 or more times an air jet velocity to suck the gas/air efficiently. The gas/air may be sucked efficiently by setting a volume of suction to 30 or more times a volume of air jet.Type: GrantFiled: March 8, 2004Date of Patent: June 12, 2007Assignee: Dainippon Screen Mfg. Co., Ltd.Inventors: Hiroshi Iwasa, Hideki Matsuura
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Publication number: 20060231794Abstract: An image display device is arranged to irradiate a ray of light from a light source into liquid crystal display devices, form an optical image corresponding with a video signal, and expansively project the optical image. The image display device includes a reflection mirror for reflecting the ray of light irradiated onto the liquid crystal display devices, an optical sensor being located on the reflection mirror and for detecting a light intensity, a drive circuit that causes the liquid crystal display devices to be driven, and a control unit that controls the drive circuit based on the light intensity detected by the optical sensor. In operation, the image display device provides a capability of adjusting a variable reference voltage of a common electrode brought about by variation with time ascribable to the liquid crystal display devices without preventing display of an input video signal.Type: ApplicationFiled: March 6, 2006Publication date: October 19, 2006Inventors: Yoshihiro Sakaguchi, Kazuhito Makino, Hiroshi Iwasa, Kazuhiko Yoshizawa, Hideki Yoshida
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Patent number: 6959676Abstract: A sheet metal rocker arm manufactured by the steps of punching one metal plate to form a blank having a predetermined contour and through holes, and subjecting this blank to a bending work based on a press work to form a pair of side walls parallel to each other and a connecting portion for connecting the both ends of the side walls in the width direction thereof. This rocker arm is also provided with at least a pair of though holes formed at positions which are aligned with each other on the both side walls and at least one engagement portion provided in a part of the connecting portion. The thickness of at least one engagement portion, is formed to be greater than the thickness of the both side walls.Type: GrantFiled: November 6, 2003Date of Patent: November 1, 2005Assignee: NSK Ltd.Inventors: Kiyoshi Okubo, Shoichi Abe, Satoshi Kadokawa, Hiroshi Iwasa
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Publication number: 20040216711Abstract: A sheet metal rocker arm manufactured by the steps of punching one metal plate to form a blank having a predetermined contour and through holes, and subjecting this blank to a bending work based on a press work to form a pair of side walls parallel to each other and a connecting portion for connecting the both ends of the side walls in the width direction thereof. This rocker arm is also provided with at least a pair of though holes formed at positions which are aligned with each other on the both side walls and at least one engagement portion provided in a part of the connecting portion. The thickness of at least one engagement portion, is formed to be greater than the thickness of the both side walls.Type: ApplicationFiled: November 6, 2003Publication date: November 4, 2004Applicant: NSK Ltd.Inventors: Kiyoshi Okubo, Shoichi Abe, Satoshi Kadokawa, Hiroshi Iwasa
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Publication number: 20040179086Abstract: A gas is generated from a printing plate by exposure of the printing plate. A gas diffusing suction unit jets air from air jet ports to diffuse the gas generated from the printing plate by irradiation of laser light. The gas diffused by the air is sucked along with the air from a gas suction opening of the gas diffusing suction unit. At this time, a gas suction velocity is set to 1.2 or more times an air jet velocity to suck the gas/air efficiently. The gas/air may be sucked efficiently by setting a volume of suction to 30 or more times a volume of air jet.Type: ApplicationFiled: March 8, 2004Publication date: September 16, 2004Applicant: DAINIPPON SCREEN MFG.CO., LTD.Inventors: Hiroshi Iwasa, Hideki Matsuura