Patents by Inventor Nobuhiro Hoshi
Nobuhiro Hoshi 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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Publication number: 20110134316Abstract: The image signal of each pixel of a frame image is multiplied by a gain value set in advance for each coordinate position on a display screen, generating a display frame image in which the luminance value becomes smaller for a pixel closer to the periphery of the display screen and larger for a pixel closer to the center. The image signal of each pixel of a subframe image is multiplied by a gain value set in advance for each coordinate position on the display screen, generating a display subframe image in which the luminance value becomes larger for a pixel closer to the periphery of the display screen and smaller for a pixel closer to the center of the display screen. The display frame image and display subframe image are sequentially displayed.Type: ApplicationFiled: November 19, 2010Publication date: June 9, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Takahiro Oguchi, Nobuhiro Hoshi
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Patent number: 7924817Abstract: The tuner unit of a digital broadcast receiving apparatus receives a digital broadcast and generates a data stream from a digital broadcast signal having a desired modulation frequency. A data stream of a digital broadcast is also input from an external digital broadcast receiving apparatus via an external I/F. A stream switching unit and demultiplexer play back the content on a desired channel, contained in the two data streams, on an image display unit in real time, and at the same time, store the content on the other channel, contained in the other data stream, in a storage unit. This makes it possible to watch one of at least two programs with different modulation frequencies while recording the other program.Type: GrantFiled: August 23, 2005Date of Patent: April 12, 2011Assignee: Canon Kabushiki KaishaInventors: Tomoyuki Ohno, Nobuhiro Hoshi, Nobuharu Ichihashi
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Patent number: 7791759Abstract: An image processing method includes the steps of detecting the dynamic range of input image data, performing edge enhancement processing to increase the number of grayscale levels of the input image data, and performing dithering processing to reduce the number of grayscale levels of each pixel of the input image data. The number of pseudo grayscale levels is determined based on a parameter indicating the level of the dynamic range and a parameter indicating the level of the edge enhancement processing.Type: GrantFiled: November 15, 2004Date of Patent: September 7, 2010Assignee: Canon Kabushiki KaishaInventor: Nobuhiro Hoshi
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Patent number: 7787055Abstract: A signal processing method comprises the steps of: inputting three signals specifying a color of one pixel; and generating four signals from the input three signals, wherein each of said four signals represents intensities of four different colors to display a color of one pixel by mixing colors, wherein said generating step includes a first converting step of converting the input three signals to two signals representing intensities of two colors among the four colors and a signal representing intensity of a mixed color obtained by mixing (a) the four colors or (b) a plurality of colors among the four colors; and a second converting step of converting the signal representing intensity of the mixed color to a plurality of signals representing intensities of a plurality of colors including at least other two colors different from the two colors.Type: GrantFiled: August 31, 2006Date of Patent: August 31, 2010Assignee: Canon Kabushiki KaishaInventors: Seiji Osawa, Yukio Hiraki, Izumi Kanai, Kohei Inamura, Masaru Tada, Nobuhiro Hoshi
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Patent number: 7742190Abstract: An image processing method includes the steps of detecting a dynamic range of input image data, performing resolution conversion processing to increase the number of grayscale levels of the input image data, and performing dithering processing to reduce the number of grayscale levels of each pixel of the input image data. The number of pseudo grayscale levels in the dithering processing is determined, based on a parameter indicating the level of the dynamic range and a parameter concerning the resolution conversion processing.Type: GrantFiled: November 15, 2004Date of Patent: June 22, 2010Assignee: Canon Kabushiki KaishaInventor: Nobuhiro Hoshi
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Patent number: 7643677Abstract: In the image display device according to the present invention, control is performed such that a condition of not using a subsidiary pixel which corresponds to a specific color among the subsidiary pixels constituting a first pixel is selected as a condition for signal processing to output a signal for designating intensity of each subsidiary pixels constituting the first pixel, and a condition of using a subsidiary pixel which corresponds to a specific color among the subsidiary pixel constituting a second pixel is selected as a condition for signal processing to output a signal for designating intensity of each subsidiary pixels constituting the second pixel adjacent to the first pixel in the first direction.Type: GrantFiled: March 16, 2006Date of Patent: January 5, 2010Assignee: Canon Kabushiki KaishaInventors: Yukio Hiraki, Izumi Kanai, Kohei Inamura, Seiji Osawa, Masaru Tada, Nobuhiro Hoshi
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Patent number: 7379624Abstract: An image processing method includes the steps of performing resolution conversion processing on input image data to increase the number of grayscale levels, performing edge enhancement processing to increase the number of grayscale levels of the input image data, and performing dithering processing to reduce the number of grayscale levels of each pixel of the input image data. The number of pseudo grayscale levels is determined, based on a combination of a parameter concerning the resolution conversion processing and a parameter indicating the level of the edge enhancement processing.Type: GrantFiled: November 15, 2004Date of Patent: May 27, 2008Assignee: Canon Kabushiki KaishaInventor: Nobuhiro Hoshi
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Patent number: 7197231Abstract: A recording apparatus includes an input device for inputting a television signal and channel information relating to the television signal from an external receiving apparatus which receives the television signal and generates the channel information, a recording device for recording the television signal, and a controller for controlling the recording device based on the channel information input by the input device.Type: GrantFiled: May 8, 2006Date of Patent: March 27, 2007Assignee: Canon Kabushiki KaishaInventors: Nobuhiro Hoshi, Nobuharu Ichihashi, Tomoyuki Ohno
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Publication number: 20070052861Abstract: A signal processing method comprises the steps of: inputting three signals specifying a color of one pixel; and generating four signals from the input three signals, wherein each of said four signals represents intensities of four different colors to display a color of one pixel by mixing colors, wherein said generating step includes a first converting step of converting the input three signals to two signals representing intensities of two colors among the four colors and a signal representing intensity of a mixed color obtained by mixing (a) the four colors or (b) a plurality of colors among the four colors; and a second converting step of converting the signal representing intensity of the mixed color to a plurality of signals representing intensities of a plurality of colors including at least other two colors different from the two colors.Type: ApplicationFiled: August 31, 2006Publication date: March 8, 2007Applicant: Canon Kabushiki KaishaInventors: Seiji Osawa, Yukio Hiraki, Izumi Kanai, Kohei Inamura, Masaru Tada, Nobuhiro Hoshi
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Publication number: 20060209097Abstract: In the image display device according to the present invention, control is performed such that a condition of not using a subsidiary pixel which corresponds to a specific color among the subsidiary pixels constituting a first pixel is selected as a condition for signal processing to output a signal for designating intensity of each subsidiary pixels constituting the first pixel, and a condition of using a subsidiary pixel which corresponds to a specific color among the subsidiary pixel constituting a second pixel is selected as a condition for signal processing to output a signal for designating intensity of each subsidiary pixels constituting the second pixel adjacent to the first pixel in the first direction.Type: ApplicationFiled: March 16, 2006Publication date: September 21, 2006Applicant: CANON KABUSHIKI KAISHAInventors: Yukio Hiraki, Izumi Kanai, Kohei Inamura, Seiji Osawa, Masaru Tada, Nobuhiro Hoshi
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Publication number: 20060193604Abstract: A recording apparatus includes an input device for inputting a television signal and channel information relating to the television signal from an external receiving apparatus which receives the television signal and generates the channel information, a recording device for recording the television signal, and a controller for controlling the recording device based on the channel information input by the input device.Type: ApplicationFiled: May 8, 2006Publication date: August 31, 2006Applicant: Canon Kabushiki KaishaInventors: Nobuhiro Hoshi, Nobuharu Ichihashi, Tomoyuki Ohno
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Publication number: 20060039361Abstract: The tuner unit of a digital broadcast receiving apparatus receives a digital broadcast and generates a data stream from a digital broadcast signal having a desired modulation frequency. A data stream of a digital broadcast is also input from an external digital broadcast receiving apparatus via an external I/F. A stream switching unit and demultiplexer play back the content on a desired channel, contained in the two data streams, on an image display unit in real time, and at the same time, store the content on the other channel, contained in the other data stream, in a storage unit. This makes it possible to watch one of at least two programs with different modulation frequencies while recording the other program.Type: ApplicationFiled: August 23, 2005Publication date: February 23, 2006Inventors: Tomoyuki Ohno, Nobuhiro Hoshi, Nobuharu Ichihashi
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Patent number: 6961511Abstract: The tuner unit of a digital broadcast receiving apparatus receives a digital broadcast and generates a data stream from a digital broadcast signal having a desired modulation frequency. A data stream of a digital broadcast is also input from an external digital broadcast receiving apparatus via an external I/F. A stream switching unit and demultiplexer play back the content on a desired channel, contained in the two data streams, on an image display unit in real time, and at the same time, store the content on the other channel, contained in the other data stream, in a storage unit. This makes it possible to watch one of at least two programs with different modulation frequencies while recording the other program.Type: GrantFiled: March 27, 2001Date of Patent: November 1, 2005Assignee: Canon Kabushiki KaishaInventors: Tomoyuki Ohno, Nobuhiro Hoshi, Nobuharu Ichihashi
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Publication number: 20050105115Abstract: An image processing method includes the steps of detecting a dynamic range of input image data, performing resolution conversion processing to increase the number of grayscale levels of the input image data, and performing dithering processing to reduce the number of grayscale levels of each pixel of the input image data. The number of pseudo grayscale levels in the dithering processing is determined, based on a parameter indicating the level of the dynamic range and a parameter concerning the resolution conversion processing.Type: ApplicationFiled: November 15, 2004Publication date: May 19, 2005Applicant: CANON KABUSHIKI KAISHAInventor: Nobuhiro Hoshi
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Publication number: 20050105114Abstract: An image processing method includes the steps of detecting the dynamic range of input image data, performing edge enhancement processing to increase the number of grayscale levels of the input image data, and performing dithering processing to reduce the number of grayscale levels of each pixel of the input image data. The number of pseudo grayscale levels is determined based on a parameter indicating the level of the dynamic range and a parameter indicating the level of the edge enhancement processing.Type: ApplicationFiled: November 15, 2004Publication date: May 19, 2005Applicant: Canon Kabushiki KaishaInventor: Nobuhiro Hoshi
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Publication number: 20050105818Abstract: An image processing method includes the steps of performing resolution conversion processing on input image data to increase the number of grayscale levels, performing edge enhancement processing to increase the number of grayscale levels of the input image data, and performing dithering processing to reduce the number of grayscale levels of each pixel of the input image data. The number of pseudo grayscale levels is determined, based on a combination of a parameter concerning the resolution conversion processing and a parameter indicating the level of the edge enhancement processing.Type: ApplicationFiled: November 15, 2004Publication date: May 19, 2005Applicant: CANON KABUSHIKI KAISHAInventor: Nobuhiro Hoshi
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Patent number: 6879768Abstract: There is provided information processing apparatus/method featured by selecting the desired packets from input stream data containing plural packets multiplexed on time-division basis, counting the number of packets other than the desired packets in the input stream data, and recording, on a recording medium, the data of the desired packets and the information data indicating the number of the counted packets.Type: GrantFiled: March 1, 2000Date of Patent: April 12, 2005Assignee: Canon Kabushiki KaishaInventors: Kenichiro Ono, Nobuhiro Hoshi
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Patent number: 6438167Abstract: An encoding apparatus including a block forming unit for dividing an input signal into blocks each consisting of a plurality of sample values, an orthogonal conversion unit for orthogonally converting the input signal blocks, a detection unit for detecting the characteristic of each block in accordance with orthogonal conversion coefficients obtained by the orthogonal conversion unit, a selection unit for selecting optimal quantization parameters which can realize a constant code amount obtained when the input signal blocks are encoded in a unit consisting of a plurality of input signal blocks, a changing unit for changing the quantization parameters selected by the selection unit in accordance with an output from the detection unit, and an encoding unit for encoding the orthogonal conversion coefficients from the orthogonal conversion unit using the quantization parameters changed by the changing unit.Type: GrantFiled: November 12, 1998Date of Patent: August 20, 2002Assignee: Canon Kabushiki KaishaInventors: Tetsuya Shimizu, Nobuhiro Hoshi, Toshihiko Suzuki, Yukinori Yamamoto
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Patent number: 6304990Abstract: An image processing apparatus comprises a receiving device for receiving encoded image data which is encoded by using orthogonal transform in a predetermined block unit, an error detecting device for detecting a transmission error of the encoded image data, a correcting device for correcting the transmission error in the predetermined block unit, and a decoding device for decoding the encoded image data and outputting image data for reproducing an image. The image processing apparatus satisfactorily controls the amount of compressed data and prevents a deterioration of image quality even if any error occurs on a transmission path, thereby reproducing good image quality.Type: GrantFiled: May 26, 1998Date of Patent: October 16, 2001Assignee: Canon Kabushiki KaishaInventors: Akihiro Shikakura, Nobuhiro Hoshi, Yushi Kaneko
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Publication number: 20010028782Abstract: The tuner unit of a digital broadcast receiving apparatus receives a digital broadcast and generates a data stream from a digital broadcast signal having a desired modulation frequency. A data stream of a digital broadcast is also input from an external digital broadcast receiving apparatus via an external I/F. A stream switching unit and demultiplexer play back the content on a desired channel, contained in the two data streams, on an image display unit in real time, and at the same time, store the content on the other channel, contained in the other data stream, in a storage unit. This makes it possible to watch one of at least two programs with different modulation frequencies while recording the other program.Type: ApplicationFiled: March 27, 2001Publication date: October 11, 2001Inventors: Tomoyuki Ohno, Nobuhiro Hoshi, Nobuharu Ichihashi