Patents by Inventor Yukihiko Shimizu
Yukihiko Shimizu 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: 8139243Abstract: A print job often includes secret information, and information may suffer sniffing from devices that execute distributed processing of jobs, or on the network. Therefore, executing the distributed processing of a print job including secret information reduces the robustness in terms of security protection. Hence, upon reception of a job, a task manager (TM) issues, to a dynamic job scheduler (DJS), a request of target devices of distributed processing according to a security level indicating the importance level of data included in that job. The DJS notifies the TM of the target devices, and the TM transmits divided jobs to the target devices.Type: GrantFiled: August 5, 2005Date of Patent: March 20, 2012Assignee: Canon Kabushiki KaishaInventors: Naohiro Isshiki, Yukihiko Shimizu, Noriyuki Kobayashi, Takeshi Namikata, Atsushi Matsumoto, Tomohiro Akiba, Takeshi Suwabe, Akira Negishi, Hidehiko Yokoyama
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Patent number: 7944138Abstract: A fluorescent display tube, which has short-length filaments, can be driven by applied voltage of 3-8V to be used for a general fluorescent display tube. The fluorescent display tube can emit sufficient thermal electrons even if the number of filament cathodes is decreased to reduce power consumption of the filaments. The filament cathode is arranged between a first and third supporting plates by one end thereof fixed to the first supporting plate and the other end thereof fixed to the third supporting plate, and the filament cathode having an equal length with the filament cathode extended between the first and third supporting plates is arranged between the second and third supporting plates.Type: GrantFiled: November 9, 2009Date of Patent: May 17, 2011Assignee: Futaba CorporationInventors: Takehiro Iizawa, Shinichi Narushima, Katsushi Tokura, Yukihiko Shimizu, Klaus Heynen
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Patent number: 7936467Abstract: There is provided an image processing apparatus which is capable of maintaining high data security and provide high convenience and high security. When a print request is transmitted from a client PC to a printer in a security print mode, a main CPU of the printer determines whether or not print data received from the client PC is for printing in the security print mode. If the print data received from the client PC is determined to be for printing in the security print mode, the main CPU causes all of the print data and temporary data to be erased from the hard disk.Type: GrantFiled: April 25, 2003Date of Patent: May 3, 2011Assignee: Canon Kabushiki KaishaInventor: Yukihiko Shimizu
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Patent number: 7872769Abstract: In a computer system including a job scheduler which divides an input job and determines a client apparatus to assign the divided job, and a task manager which transmits the divided job to the client apparatus determined by the job scheduler, the job scheduler assigns the same job to a plurality of client apparatuses when the number of client apparatuses is larger than the number of divided jobs, and when the job is finished in one of the plurality of client apparatuses assigned the same job, execution of the job in the remaining client apparatuses is canceled so that the time until all jobs are finished is shortened.Type: GrantFiled: June 9, 2005Date of Patent: January 18, 2011Assignee: Canon Kabushiki KaishaInventors: Masamichi Akashi, Yukihiko Shimizu, Masataka Yasuda, Noriyuki Kobayashi, Shinichiro Maekawa, Takeshi Namikata, Hideki Sakai, Hirohiko Tashiro, Atsushi Matsumoto, Yushi Matsukubo
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Patent number: 7844129Abstract: Even when a CPU gains higher performance and a distributed computing environment is being put in place, it is not easy to follow the speed of hardware image processing implemented by dedicated hardware. Hence, jobs of filter processing having a heavy operation load and low distributability are selectively and intensively input to a small number of resources having performance as high as possible. On the other hand, since the color conversion processing and gamma processing have high distributability, even when jobs are input to many resources having low performance, an improvement of the processing speed can be expected. Therefor, color conversion processing and gamma processing distribute jobs to many resources.Type: GrantFiled: June 9, 2005Date of Patent: November 30, 2010Assignee: Canon Kabushiki KaishaInventors: Takeshi Namikata, Yushi Matsukubo, Yukihiko Shimizu, Masataka Yasuda, Noriyuki Kobayashi, Shinichiro Maekawa, Hideki Sakai, Hirohiko Tashiro, Atsushi Matsumoto, Masamichi Akashi
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Patent number: 7826080Abstract: In a network print system in which a printer and at least one client are connected to each other through a network, and at least a part of a job for the printer can be subjected to load distributed processing by grid computing, wherein when a printer driver of the printer is installed on any one of the at least one client, the system is adapted to build a grid computing network. In this arrangement, it is easily to build the grid computing network in which the printer job is subjected to load distributed processing.Type: GrantFiled: June 9, 2005Date of Patent: November 2, 2010Assignee: Canon Kabushiki KaishaInventors: Atsushi Matsumoto, Yushi Matsukubo, Yukihiko Shimizu, Masataka Yasuda, Noriyuki Kobayashi, Shinichiro Maekawa, Takeshi Namikata, Hideki Sakai, Hirohiko Tashiro, Masamichi Akashi
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Publication number: 20100117515Abstract: A fluorescent display tube, which has short-length filaments, can be driven by applied voltage of 3-8V to be used for a general fluorescent display tube. The fluorescent display tube can emit sufficient thermal electrons even if the number of filament cathodes is decreased to reduce power consumption of the filaments. The filament cathode is arranged between a first and third supporting plates by one end thereof fixed to the first supporting plate and the other end thereof fixed to the third supporting plate, and the filament cathode having an equal length with the filament cathode extended between the first and third supporting plates is arranged between the second and third supporting plates.Type: ApplicationFiled: November 9, 2009Publication date: May 13, 2010Inventors: Takehiro Iizawa, Shinichi Narushima, Katsushi Tokura, Yukihiko Shimizu, Klaus Heynen
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Patent number: 7692675Abstract: A print head driving method controls a gradation of a print head employing an array light source of a lower resolution and an array light source of a higher resolution based on image data represented by 2n bits, wherein n is zero or a positive integer, and both of the array light sources are gradation-controlled by combining a pulse weight-application method and a pulse accumulation method. Further, a image formation apparatus controls a gradation of a print head employing an array light source of a lower resolution and an array light source of a higher resolution based on image data represented by 2n bits, wherein n is 0 or a positive integer, and both of the array light sources are controlled by a gradation control method employing a simple combination of a pulse weight-application method and a pulse accumulation method.Type: GrantFiled: August 8, 2006Date of Patent: April 6, 2010Assignee: Futaba CorporationInventors: Katsuya Hiraga, Yukihiko Shimizu
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Patent number: 7689475Abstract: A manufacturer and retailer, which supply and sell articles such as business expendables or the like, stock articles in considerable quantities in their warehouses. However, such stocks are not always appropriate due to diversity of articles and difficulty in demand prediction, and articles cannot be delivered in a short term. A main server controls stock reserve of a branch warehouse on the basis of the check result of the urgency level of received order information, which is received from a user's information processing apparatus via a communication line, and the comparison result between the order quantity indicated by the received order information, and a non-reserved stock quantity.Type: GrantFiled: April 2, 2002Date of Patent: March 30, 2010Assignee: Canon Kabushiki KaishaInventors: Rikio Shiba, Takayuki Nagatsuka, Yukihiko Shimizu
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Patent number: 7675639Abstract: There is provided an image forming apparatus capable of reducing the time required to resume image formation by appropriately controlling whether a stopped state transferring process is executed in a case where a printer section is in the operating state and an error that makes image formation by the image forming apparatus impossible has occurred. A CPU carries out an operating state transferring process that causes a printer section to transfer from a stopped state to an operating state and a stopped state transferring process that causes the printer section to transfer from the operating state to the stopped state. The CPU controls whether to carry out the stopped state transferring process in a case where the printer section is in the operating state and an error that makes image formation by the MFP (Multi Function Peripheral) impossible has occurred.Type: GrantFiled: April 14, 2006Date of Patent: March 9, 2010Assignee: Canon Kabushiki KaishaInventor: Yukihiko Shimizu
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Publication number: 20090307774Abstract: A computer peripheral apparatus of this invention has a check step of checking whether received data is infected with a computer virus. If the received data satisfies a predetermined condition, the apparatus executes the check step before predetermined data processing. If the received data does not satisfy the predetermined condition, the apparatus executes the check step before the predetermined data processing.Type: ApplicationFiled: July 6, 2009Publication date: December 10, 2009Applicant: Canon Kabushiki KaishaInventor: Yukihiko Shimizu
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Patent number: 7571481Abstract: A computer peripheral apparatus of this invention has a check step of checking whether received data is infected with a computer virus. If the received data satisfies a predetermined condition, the apparatus executes the check step before predetermined data processing. If the received data does not satisfy the predetermined condition, the apparatus executes the check step before the predetermined data processing.Type: GrantFiled: November 12, 2003Date of Patent: August 4, 2009Assignee: Canon Kabushiki KaishaInventor: Yukihiko Shimizu
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Patent number: 7518301Abstract: In an electron tube including vibration absorbers for linear members such as filaments, a vibration absorbing means that is made of a vibration absorber with a large vibration absorption effect, has a simple configuration, and is attachable easily to filaments is provided. The vibration absorbing means is formed of a holder 231, a vibration absorber 241, and a getter shielding member 251. These three members are attached to a shielding electrode S overlying the front substrate 111 to dispose the vibration absorber 241 between the holder 231 and getter shielding member 251. The vibration absorber 241 is mounted to slide or rotate between the holder 231 and the getter shielding member 251. The vibration absorber 241 has an aperture 2413 in which the filament is engaged. The bottom (apex) of the aperture 2413 is formed eccentrically. The vibration absorber 241 is in line contact with the shielding electrode S, as shown in FIG. 3(c).Type: GrantFiled: January 14, 2005Date of Patent: April 14, 2009Assignee: Futaba CorporationInventors: Yukihiko Shimizu, Masao Saito, Kinya Ueda, Masahiro Nakayama, Kazushige Noguchi
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Patent number: 7386603Abstract: Contents are distributed on the basis of information of a hobby and an address of the user and the like. The distribution of the contents is controlled also on the basis of a result of comparison of a reception intensity regarding contents of 3 or more levels set on the user side and a distribution intensity set as attributes into the contents on a distributing side.Type: GrantFiled: June 24, 2002Date of Patent: June 10, 2008Assignee: Canon Kabushiki KaishaInventors: Rikio Shiba, Katsuhiko Tanaka, Takayuki Nagatsuka, Yukihiko Shimizu
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Patent number: 7382484Abstract: When the distributed load system of grid computing is applied to printers, multi-functional peripheral equipments, and the like connected to a computer network, if a device which inputs a job received from the client is executing processing, the distributed processing requires much time, and the user of the client cannot obtain the print result soon. Hence, when a print job is input, the processing time upon executing distributed processing of data processes in the print job by computer devices connected to the computer network is estimated. Based on the estimation result, the print job or jobs divided from the print job are transmitted to the computer devices connected to the computer network.Type: GrantFiled: June 9, 2005Date of Patent: June 3, 2008Assignee: Canon Kabushiki KaishaInventors: Yushi Matsukubo, Yukihiko Shimizu, Masataka Yasuda, Noriyuki Kobayashi, Shinichiro Maekawa, Takeshi Namikata, Hideki Sakai, Hirohiko Tashiro, Atsushi Matsumoto, Masamichi Akashi
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Publication number: 20070035609Abstract: A print head driving method controls a gradation of a print head employing an array light source of a lower resolution and an array light source of a higher resolution based on image data represented by 2n bits, wherein n is zero or a positive integer, and both of the array light sources are gradation-controlled by combining a pulse weight-application method and a pulse accumulation method. Further, a image formation apparatus controls a gradation of a print head employing an array light source of a lower resolution and an array light source of a higher resolution based on image data represented by 2n bits, wherein n is 0 or a positive integer, and both of the array light sources are controlled by a gradation control method employing a simple combination of a pulse weight-application method and a pulse accumulation method.Type: ApplicationFiled: August 8, 2006Publication date: February 15, 2007Applicant: Futaba CorporationInventors: Katsuya Hiraga, Yukihiko Shimizu
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Patent number: 7142717Abstract: By smoothing a full-color image, staircasing of characters even in a gradation image is removed. An area to be smoothed is detected from image data having a plurality of color components, and image data included in the detected area is smoothed in units of color components. Image data which places an importance on resolution is smoothed by increasing the resolution to reproduce smooth characters and figures. Image data which places an importance on gradation characteristic is output without increasing the resolution, thus attaining high-gradation recording. A character or figure is detected from bitmap image data input from external equipment, and is smoothed. In correspondence with the density of the smoothed image data, the pulse width is switched, thereby changing the resolution of image data.Type: GrantFiled: August 9, 2004Date of Patent: November 28, 2006Assignee: Canon Kabushiki KaishaInventors: Yushi Matsukubo, Hiroyuki Tsuji, Yukihiko Shimizu
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Publication number: 20060232812Abstract: There is provided an image forming apparatus capable of reducing the time required to resume image formation by appropriately controlling whether a stopped state transferring process is executed in a case where a printer section is in the operating state and an error that makes image formation by the image forming apparatus impossible has occurred. A CPU carries out an operating state transferring process that causes a printer section to transfer from a stopped state to an operating state and a stopped state transferring process that causes the printer section to transfer from the operating state to the stopped state. The CPU controls whether to carry out the stopped state transferring process in a case where the printer section is in the operating state and an error that makes image formation by the MFP (Multi Function Peripheral) impossible has occurred.Type: ApplicationFiled: April 14, 2006Publication date: October 19, 2006Applicant: Canon Kabushiki KaishaInventor: Yukihiko Shimizu
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Publication number: 20060028678Abstract: When data of a print job are stored on another device or a file server, data transfer is required to obtain image data, and the start of a print process and a preview process take time compared to a print job whose data is stored in a local storage device. Hence, a print job is started, and it is checked if data for all pages of the print job are locally held. If data for all pages of the print job are locally held, a print process is continued; otherwise, data for remaining pages are obtained and undergo the print process parallel to the print process for a first part.Type: ApplicationFiled: August 5, 2005Publication date: February 9, 2006Applicant: CANON KABUSHIKI KAISHAInventors: Akira Negishi, Yukihiko Shimizu, Noriyuki Kobayashi, Takeshi Namikata, Atsushi Matsumoto, Tomohiro Akiba, Takeshi Suwabe, Naohiro Isshiki, Hidehiko Yokoyama
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Publication number: 20060028677Abstract: A print job often includes secret information, and information may suffer sniffing from devices that execute distributed processing of jobs, or on the network. Therefore, executing the distributed processing of a print job including secret information reduces the robustness in terms of security protection. Hence, upon reception of a job, a task manager (TM) issues, to a dynamic job scheduler (DJS), a request of target devices of distributed processing according to a security level indicating the importance level of data included in that job. The DJS notifies the TM of the target devices, and the TM transmits divided jobs to the target devices.Type: ApplicationFiled: August 5, 2005Publication date: February 9, 2006Applicant: CANON KABUSHIKI KAISHAInventors: Naohiro Isshiki, Yukihiko Shimizu, Noriyuki Kobayashi, Takeshi Namikata, Atsushi Matsumoto, Tomohiro Akiba, Takeshi Suwabe, Akira Negishi, Hidehiko Yokoyama