Patents by Inventor Tadashi Saitoh
Tadashi Saitoh 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: 6363054Abstract: A device outputting a plurality of paths to a terminal after rearranging the plurality of paths when the paths are arranged in an order of free choice on a side of a communication line, the device having a counter which receives a path number of a path in response to first data about the path, and increments a count, starting from the path number, in response to additional data arriving and a storage unit, shared by the plurality of paths, which stores real data of the path at positions indicated by the count, and where the real data stored in the storage unit is output to the terminal.Type: GrantFiled: April 15, 1998Date of Patent: March 26, 2002Assignee: Fujitsu LimitedInventor: Tadashi Saitoh
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Patent number: 6154202Abstract: An image output apparatus capable of realizing asynchronous data access by a host controller in response to an image data transfer request from the host controller, by adding a minimum amount of circuitry to the image output apparatus without using an external data buffer. The image output apparatus includes: a storage device for storing image data; a display circuit for sequentially reading the image data from the storage device and converting the image data into image data capable of being displayed; a timing controller for controlling the operation timing of the display circuit; and an output circuit for changing an operation mode of the timing controller in response to a data transfer request from the host controller and allowing the image data corresponding in amount to the data transfer request to be outputted asynchronously.Type: GrantFiled: January 5, 1998Date of Patent: November 28, 2000Assignees: Hitachi, Ltd., Sega Enterprises, Ltd.Inventors: Hirotaka Hara, Tadashi Saitoh, Junichi Kimura, Yutaka Okunoki
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Patent number: 6095164Abstract: In a method and an apparatus for removing an image forming substance such as toner from an image holding member such as a sheet of transfer paper, a CCD sensor detects an unremoved image formed by a stamp, additional writing, etc. and left on the transfer paper sheet after toner separating processing is performed with respect to the transfer paper sheet by a liquid-providing toner-separating unit. A discriminating mark such as a punch, a mark o, etc. is additionally provided to the transfer paper sheet having the detected unremoved image by a discriminating mark providing unit. The transfer paper sheet having the discriminating mark is automatically sorted by a sorting unit and is discharged onto a paper discharging tray. The toner removing apparatus may have an unrecognizing device for blotting the unremoved image such as a seal print, a signature, etc. on the transfer paper sheet.Type: GrantFiled: September 22, 1994Date of Patent: August 1, 2000Assignee: Ricoh Company, Ltd.Inventors: Masatoshi Saitoh, Kazuhiro Ando, Tadashi Saitoh, Youichi Asaba, Kiyoshi Tanikawa, Yoshiaki Miyashita, Satoshi Shinguryo, Shinichi Kuramoto, Sadao Takahashi, Yoshiyuki Kimura
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Patent number: 6047758Abstract: In a method for repeatedly using an image holding member such as a sheet of paper, toner for an electronic photograph is constructed such that a maximum value of viscoelasticity of the toner shown by tan .delta. is equal to or smaller than 3 in the range of a heating temperature when the toner is heated and fixed to the image holding member. Such toner has sufficient elastic or cohesive force. Accordingly, when the toner is heated and fixed to the paper sheet, no excessive adhesive force is caused to such an extent that paper fibers of the paper sheet eat into the toner attached to the paper sheet. Accordingly, after an aqueous solution including a surfactant is supplied to the paper sheet by a liquid supplying unit, the toner is softened by heat from heating rollers so that the toner is attached to a surface of an offset belt.Type: GrantFiled: December 11, 1997Date of Patent: April 11, 2000Assignee: Ricoh Company, Ltd.Inventors: Shinichi Kuramoto, Youichi Asaba, Kiyoshi Tanikawa, Yoshiaki Miyashita, Satoshi Shinguryo, Sadao Takahashi, Yoshiyuki Kimura, Kazuhiro Ando, Tadashi Saitoh
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Patent number: 5839143Abstract: In a method of and an apparatus for regenerating an image support from a used image-bearing support which bears thereon hydrophobic images formed of thermofusible or heat-softening ink, a plurality of image releasing members are used for removing the hydrophobic images from the used image-bearing support. Specifically, at least one of the image releasing members has a first portion which is able to adhere to the hydrophobic images and a second portion which is unable to adhere to the hydrophobic images, and the image releasing members are arranged in series in order of size of the first portion from small to large along a feeding direction of the used image support. Accordingly, the image releasing members are allowed to adhere to the hydrophobic images in order of size of the first portion from small to large so that the hydrophobic images are removed from the used image support effectively.Type: GrantFiled: February 20, 1997Date of Patent: November 24, 1998Assignee: Ricoh Company, Ltd.Inventors: Kiyoshi Tanikawa, Tadashi Saitoh
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Patent number: 5753400Abstract: In a method for repeatedly using an image holding member such as a sheet of paper, toner for an electronic photograph is constructed such that a maximum value of viscoelasticity of the toner shown by tan .delta. is equal to or smaller than 3 in the range of a heating temperature when the toner is heated and fixed to the image holding member. Such toner has sufficient elastic or cohesive force. Accordingly, when the toner is heated and fixed to the paper sheet, no excessive adhesive force is caused to such an extent that paper fibers of the paper sheet eat into the toner attached to the paper sheet. Accordingly, after an aqueous solution including a surfactant is supplied to the paper sheet by a liquid supplying unit, the toner is softened by heat from heating rollers so that the toner is attached to a surface of an offset belt.Type: GrantFiled: March 21, 1997Date of Patent: May 19, 1998Assignee: Ricoh Company, Ltd.Inventors: Shinichi Kuramoto, Youichi Asaba, Kiyoshi Tanikawa, Yoshiaki Miyashita, Satoshi Shinguryo, Sadao Takahashi, Yoshiyuki Kimura, Kazuhiro Ando, Tadashi Saitoh
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Patent number: 5739860Abstract: In a moving picture decoding apparatus, an output section is provided with a circuit for making a logic sum of control signals for renewing a picture data output, as a control signal for determining a picture data to be next outputted in a selected mode. Thereby, according to a request, newly decoded picture data is discarded or an inputted picture data is discarded without being decoded, and picture data which is currently being outputted is outputted again. In response to a control signal for renewing the output, decoded picture data to be outputted subsequently is outputted and picture data which is currently being outputted is discarded.Type: GrantFiled: November 17, 1995Date of Patent: April 14, 1998Assignees: Hitachi, Ltd., Sega Enterprises, Ltd.Inventors: Akio Hoshino, Takafumi Kikuchi, Tadashi Saitoh, Junichi Kimura, Yutaka Okunoki, Masao Oshimi
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Patent number: 5719646Abstract: A train of coded input picture data carrying moving picture information includes at least one picture data which need to refer to another picture data and at least one coded picture data containing an error.Type: GrantFiled: November 17, 1995Date of Patent: February 17, 1998Assignees: Hitachi. Ltd., Sega Enterprises, Ltd.Inventors: Takafumi Kikuchi, Tadashi Saitoh, Yutaka Okunoki
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Patent number: 5674664Abstract: In a method of and an apparatus for regenerating an image support from a used image-bearing support which bears thereon hydrophobic images formed of thermofusible or heat-softening ink, a plurality of image releasing members are used for removing the hydrophobic images from the used image-bearing support. Specifically, at least one of the image releasing members has a first portion which is able to adhere to the hydrophobic images and a second portion which is unable to adhere to the hydrophobic images, and the image releasing members are arranged in series in order of size of the first portion from small to large along a feeding direction of the used image support. Accordingly, the image releasing members are allowed to adhere to the hydrophobic images in order of size of the first portion from small to large so that the hydrophobic images are removed from the used image support effectively.Type: GrantFiled: October 13, 1994Date of Patent: October 7, 1997Assignee: Ricoh Company, Ltd.Inventors: Kiyoshi Tanikawa, Tadashi Saitoh
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Patent number: 5655114Abstract: A data processing device contains art execution circuit and a data buffer circuit which stores one or more commands and/or one or more parameters which are prefetched, until each of the commands and parameters is read out by the execution circuit. The execution circuit inputs the oldest command stored in the data buffer circuit when an execution of a preceding command is completed, inputs one or more parameters stored in the data buffer circuit when the command input therein requests the parameters, and executes the command input therein, using the parameters when the parameters are input therein. The device further contains a circuit for detecting whether or not there is enough vacant space in the data buffer circuit in which a further command and/or a parameter can be stored, and another circuit for detecting a state of the data buffer circuit in which state the data buffer circuit does not store data including a command and/or a parameter, which is necessary for a next operation in the execution circuit.Type: GrantFiled: May 30, 1995Date of Patent: August 5, 1997Assignees: Fujitsu Limited, Fujitsu Microcomputer Systems LimitedInventors: Takayoshi Taniai, Hajime Sato, Hidetoshi Shimura, Tadashi Saitoh, Shinji Oyamada
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Patent number: 5643380Abstract: A method of recycling an image-deposited recording material having a surface portion which swells in contact with water and bears thereon deposited images containing an image-constituting material, include the steps of: (a) applying a water-containing image removal promoting liquid to the image-deposited surface portion of the recording material, (b) bringing an image release member into contact with the image-deposited surface portion of the recording material to transfer the images to the image release member to remove the images from the image-deposited recording material, and (c) applying heat to the image-deposited recording material at least after the step (a), with substantially retaining the water component of the image removal promoting liquid in the image-deposited surface portion.Type: GrantFiled: February 27, 1995Date of Patent: July 1, 1997Assignee: Ricoh Company, Ltd.Inventors: Tadashi Saitoh, Kiyoshi Tanikawa, Kakuji Murakami, Toshiaki Tokita, Shigeru Fujita
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Patent number: 5635005Abstract: A method for recycling a support material of an image-bearing support is composed of the steps of (a) impregnating an image-bearing support, at least part of which is composed of a paper layer, and on which paper layer images made from a thermofusible ink containing a thermofusible resin component are formed, with at least one of water or an aqueous solution which is selected from the group consisting of an aqueous solution containing a surfactant, an aqueous solution containing a water-soluble polymer, and an aqueous solution containing a water-soluble polymer and a surfactant; (b) causing an image release member to adhere to the image bearing side of the support with the application of heat thereto, the image release member including a resin layer which is composed of the same thermofusible resin component as that contained in the thermofusible ink, or a resin layer having the same or substantially the same SP value as that of the thermofusible resin component in said thermofusible ink; and (c) peeling theType: GrantFiled: May 30, 1995Date of Patent: June 3, 1997Assignee: Ricoh Company, Ltd.Inventors: Tadashi Saitoh, Kiyoshi Tanikawa, Eiichi Kawamura
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Patent number: 5607534Abstract: A method of recycling a support material for supporting images thereon, at least part of the support material including a paper layer which contains cellulose fibers as the main component and bears thereon hydrophobic images having a coloring agent and a heat softening or thermofusible material, includes the steps of causing the support material to hold a water-containing image peeling liquid thereon; bringing an image peeling member into contact with the hydrophobic images while the image peeling liquid is held on the support material; and peeling the hydrophobic images off the paper layer, with the image peeling liquid being held in an amount of 1.0 g or more per A4-size paper layer, or with the rate of the penetration of the image peeling liquid into the paper layer of the support material being set at 12 ml/m.sup.2 or more for a contact time of 0.Type: GrantFiled: August 22, 1994Date of Patent: March 4, 1997Assignee: Ricoh Company, Ltd.Inventors: Toshiyuki Kawanishi, Masato Igarashi, Eiichi Kawamura, Tadashi Saitoh, Kiyoshi Tanikawa, Kakuji Murakami
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Patent number: 5574538Abstract: In a method and an apparatus for removing an image forming substance such as toner from an image holding member such as a sheet of transfer paper, an unstabilizing agent is provided to the image holding member. An attaching state between the image forming substance and the image holding member stably attaching the image forming substance on a surface thereof is changed to an unstable state by the unstabilizing agent. The image forming substance is separated and removed from the image holding member by making a separating member come in close contact with the image forming substance on the image holding member having the provided unstabilizing agent. A processing situation mark showing a processing situation of removal of the image forming substance is formed in the image holding member. The processing situation mark can be removed from the image holding member by the image forming substance removing processing.Type: GrantFiled: June 27, 1995Date of Patent: November 12, 1996Assignee: Ricoh Company, Ltd.Inventors: Yasuhiro Takahashi, Yoshiaki Miyashita, Satoshi Shinguryou, Shinichi Kuramoto, Youichi Asaba, Kiyoshi Tanikawa, Sadao Takahashi, Yoshiyuki Kimura, Kazuhiro Ando, Tadashi Saitoh
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Patent number: 5488595Abstract: A disk-like optical information recording medium in/from which information can be optically recorded/reproduced along a virtual track virtually defined in a spiral or concentric circular form on the recording medium is provided with a pair of wobbling pits provided for each predetermined data record unit and shifted in position in opposite senses of a radius direction with respect to a virtual track center and a group of at least two pits provided at specified positions in association with a leading one of the paired wobbling pits. The pit group forms together with the leading wobbling pit a mark following a predetermined modulation rule applied upon recording of information and changes between tracks adjacent to each other in the radius direction.Type: GrantFiled: September 21, 1993Date of Patent: January 30, 1996Assignees: Hitachi, Ltd., Hitachi Video Engineering, Inc.Inventors: Takashi Takeuchi, Tadashi Saitoh, Toshihiro Matsunaga, Masashi Mori, Hajime Fujiya
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Patent number: 5463740Abstract: A data control device which acquires the right to use a bus and performs data control includes a request circuit which selectively generates a plurality of request signals for acquiring the right to use corresponding buses. The plurality of request signals are based on attributes of data to be exchanged with an external device. The exchanged data includes data and commands.Type: GrantFiled: February 13, 1995Date of Patent: October 31, 1995Assignee: Fujitsu Limited & Fujitsu Microcomputer Systems Ltd.Inventors: Takayoshi Taniai, Hajime Satoh, Hidetoshi Shimura, Tadashi Saitoh
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Patent number: 5438665Abstract: A direct memory access controller coupled to a system bus of a system for controlling data transfers through a channel includes the following. A request handler receives a transfer request generated by a device connected to the system bus. A transfer control information register stores transfer control information used for obtaining transfer control information necessary for executing the data transfer by a next transfer request supplied from the request handler. A temporary register stores the transfer control information necessary for processing the next transfer request. A transfer control information setting circuit generates the transfer control information necessary for processing the next transfer request on the basis of the transfer control information registered in the transfer control information register during the data transfer by the present transfer request and then renewing the transfer control information and-temporary registers with the generated transfer control information.Type: GrantFiled: February 1, 1994Date of Patent: August 1, 1995Assignee: Fujitsu LimitedInventors: Takayoshi Taniai, Yasuhiro Tanaka, Tadashi Saitoh
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Patent number: 5434106Abstract: A semiconductor package device is disclosed. In one embodiment, attached by its active face to a lead-on-chip leadframe having leadfingers is an integrated circuit. The integrated circuit has a polyimide coating on its backside. An encapsulating material surrounds the integrated circuit and the lead-on-chip leadframe so that the leadfingers are exposed. The polyimide coating on the backside of the integrated circuit helps to reduce package cracking arising from mounting the device to a printed circuit board by relflow solder.Type: GrantFiled: February 16, 1994Date of Patent: July 18, 1995Assignee: Texas Instruments IncorporatedInventors: Thiam B. Lim, Tadashi Saitoh, Boon Q. Seow
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Patent number: 5313102Abstract: A semiconductor package device is disclosed. In one embodiment, attached by its active face to a lead-on-chip leadframe having leadfingers is an integrated circuit. The integrated circuit has a polyimide coating on its backside. An encapsulating material surrounds the integrated circuit and the lead-on-chip leadframe so that the leadfingers are exposed. The polyimide coating on the backside of the integrated circuit helps to reduce package cracking arising from mounting the device to a printed circuit board by relflow solder.Type: GrantFiled: December 22, 1989Date of Patent: May 17, 1994Assignee: Texas Instruments IncorporatedInventors: Thiam B. Lim, Tadashi Saitoh, Boon Q. Seow
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Patent number: RE37645Abstract: In a method and an apparatus for removing an image forming substance such as toner from an image holding member such as a sheet of transfer paper, an unstabilizing agent is provided to the image holding member. An attaching state between the image forming substance and the image holding member stably attaching the image forming substance on a surface thereof is changed to an unstable state by the unstabilizing agent. The image forming substance is separated and removed from the image holding member by making a separating member come in close contact with the image forming substance on the image holding member having the provided unstabilizing agent. A processing situation mark showing a processing situation of removal of the image forming substance is formed in the image holding member. The processing situation mark can be removed from the image holding member by the image forming substance removing processing.Type: GrantFiled: November 10, 1998Date of Patent: April 9, 2002Assignee: Ricoh Company, Ltd.Inventors: Yasuhiro Takahashi, Yoshiaki Miyashita, Satoshi Shinguryou, Shinichi Kuramoto, Youichi Asaba, Kiyoshi Tanikawa, Sadao Takahashi, Yoshiyuki Kimura, Kazuhiro Ando, Tadashi Saitoh