Patents by Inventor Takayuki Chikada
Takayuki Chikada 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: 9245212Abstract: A printing device, a printing system, a program, and a printing method for improving security and user-friendliness are disclosed. The printing system (1) includes PC (10-1) and printer devices (20-1 to 20-N) connected via LAN (50). The PC (10-1) has a printing data forming unit (111) for forming print data according to a user instruction, a print data transmission unit (113) for transmitting the formed print data to the printer devices (20-1 to 20-N), a communication unit (17). The printer devices (20-1 to 20-N) have an external storage device (23) for storing received print data, an input unit (26) for inputting a user print instruction and a user identifier, a card reader (24), a print data management unit (212) for reading out print data corresponding to the user identifier from the external storage device (23), a printer engine (28) for performing printing according to the print read out data.Type: GrantFiled: December 2, 2013Date of Patent: January 26, 2016Assignee: Dai Nippon Printing Co, Ltd.Inventors: Nobuya Fukano, Yoshihiro Yano, Takayuki Chikada
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Patent number: 8913267Abstract: A printing system and a program ensuring an improved security. A printing system (1) has printers (20A, 20B, 20C) for printing according to printing data further having a printer managing device (30) having a printing data managing section (311) for limiting the printing data supplied to the printers (20A, 20B, 20C) to printing data having a security level matching the security level based on the installation environment of the printer (20A) and a communication section (34) for providing the limited printing data to the printer (20A).Type: GrantFiled: June 5, 2006Date of Patent: December 16, 2014Assignee: Dai Nippon Printing Co. Ltd.Inventors: Nobuya Fukano, Yoshihiro Yano, Takayuki Chikada
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Publication number: 20140153032Abstract: A printing device, a printing system, a program, and a printing method for improving security and user-friendliness are disclosed. The printing system (1) includes PC (10-1) and printer devices (20-1 to 20-N) connected via LAN (50). The PC (10-1) has a printing data forming unit (111) for forming print data according to a user instruction, a print data transmission unit (113) for transmitting the formed print data to the printer devices (20-1 to 20-N), a communication unit (17). The printer devices (20-1 to 20-N) have an external storage device (23) for storing received print data, an input unit (26) for inputting a user print instruction and a user identifier, a card reader (24), a print data management unit (212) for reading out print data corresponding to the user identifier from the external storage device (23), a printer engine (28) for performing printing according to the print read out data.Type: ApplicationFiled: December 2, 2013Publication date: June 5, 2014Applicant: DAI NIPPON PRINTING CO., LTD.Inventors: Nobuya Fukano, Yoshihiro Yano, Takayuki Chikada
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Patent number: 8711393Abstract: There are provided a printing device, a printing system, a program, and a printing method capable of improving security and user-friendliness. The printing system (1) includes a PC (10-1) and printer devices (20-1 to 20-N) connected via a LAN (50). The PC (10-1) has a printing data forming unit (111) for forming print data according to a user instruction, a print data transmission unit (113) for transmitting the formed print data to the printer devices (20-1 to 20-N), a communication unit (17), and the like. The printer devices (20-1 to 20-N) have an external storage device (23) for storing received print data, an input unit (26) for inputting a user print instruction and a user identifier, a card reader (24), a print data management unit (212) for reading out print data corresponding to the user identifier from the external storage device (23), a printer engine (28) for performing printing according to the print data which has been read out, and the like.Type: GrantFiled: June 5, 2006Date of Patent: April 29, 2014Assignee: Dai Nippon Printing Co., Ltd.Inventors: Nobuya Fukano, Yoshihiro Yano, Takayuki Chikada
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Patent number: 8646058Abstract: IC cards (R11, R12, and R21) are issued respectively to users ?, ?, and ?. An identification code (ID(11)) of a computer (11) supplied to user ? and environment information (ENV(11)) that indicates a normal network environment of the computer (11) are recorded in the IC card (R11) issued to user ?. When in order to use a computer, a user connects his/her IC card, the identification code and the network environment of the computer to be used are compared with the identification code and environment information recorded in the IC card and different access rights are provided in accordance to the degree of matching. The identification code may be a MAC address of a LAN circuit incorporated in the computer, and the environment information may be a default gateway address or the like. Different access rights can thus be set according to the computer or the network environment that is used.Type: GrantFiled: January 20, 2005Date of Patent: February 4, 2014Assignee: Dai Nippon Printing Co., Ltd.Inventors: Syouzou Niwata, Yoshihiro Yano, Takayuki Chikada, Fukio Handa, Kazutoshi Kichikawa
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Patent number: 8595813Abstract: It is possible to perform encrypted communication between members of a group while assuring a sufficient security compatible with a change of the members. An IC card having the same fixed code F(a) is distributed to all the staffs of company A. When communication is performed between a staff ? and a staff ? belonging to the same project group, ? of the transmission side writes an arbitrary variable code V(1) in the IC card (100a) so as to generate encryption key information K(a1) according to F(a) and V(1) in the IC card and encrypt data D1 by using K(a1). ? of the reception side writes the variable code V(1) received from ? in the IC card (100b) so as to generate encryption key information K(a1). By using this K(a1), the encrypted data D2 received is decrypted to obtain data D3. The fixed code F(a) is different for each of the companies and rewrite-disabled so as to assure security.Type: GrantFiled: April 29, 2011Date of Patent: November 26, 2013Assignee: Dai Nippon Printing Co., Ltd.Inventors: Fukio Handa, Yoshihiro Yano, Takayuki Chikada, Syouzou Niwata
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Patent number: 8570143Abstract: A management system manages use of management object provided in facilities by using an information storage medium of a user. An entrance management apparatus, provided in the vicinity of an entrance of the facilities, stores use permission information for permitting the use of the management object on an information storage medium when the user enters the facilities. In the facilities, a use management apparatus, provided for each management object, controls availability or unavailability of the management object based on the use permission information stored on the information storage medium. Additionally, the use management apparatus stores, in the information storage medium, use information showing that the management object is used. Further, a room leaving management apparatus, provided in the vicinity of an exit of the facilities, manages leaving of the user based on the use information stored on the information storage medium.Type: GrantFiled: December 21, 2010Date of Patent: October 29, 2013Assignee: Dai Nippon Printing Co., Ltd.Inventors: Hisashi Nakagawa, Takehiko Anegawa, Yoshihiro Yano, Takayuki Chikada
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Patent number: 8099771Abstract: It is possible to issue an IC card storing unique encryption key information in such a manner that re-issuing is enabled and sufficient security can be assured. An IC card provider X delivers an IC card having a group code G(A) to a company A and an IC card having a group code G(B) to a company B. When a company staff ? inputs a unique personal code P(?) and performs initialization, in the IC card, calculation is performed according to a predetermined algorithm using the P(?) and G(A). Data uniquely determined by the calculation is stored as encryption key information K(?) in the IC card. Even if the company staff ? loses the IC card, it is possible to obtain the IC card having the same encryption key information K(?) as before by performing initialization again by using the IC card delivered by the IC card provider X.Type: GrantFiled: May 19, 2011Date of Patent: January 17, 2012Assignee: Dai Nippon Printing Co., Ltd.Inventors: Fukio Handa, Yoshihiro Yano, Takayuki Chikada, Syouzou Niwata
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Patent number: 8089341Abstract: A management system manages use of management object provided in facilities by using an information storage medium of a user. An entrance management apparatus, provided in the vicinity of an entrance of the facilities, stores use permission information for permitting the use of the management object on an information storage medium when the user enters the facilities. In the facilities, a use management apparatus, provided for each management object, controls availability or unavailability of the management object based on the use permission information stored on the information storage medium. Additionally, the use management apparatus stores, in the information storage medium, use information showing that the management object is used. Further, a room leaving management apparatus, provided in the vicinity of an exit of the facilities, manages leaving of the user based on the use information stored on the information storage medium.Type: GrantFiled: November 1, 2005Date of Patent: January 3, 2012Assignee: Dai Nippon Printing Co., Ltd.Inventors: Hisashi Nakagawa, Takehiko Anegawa, Yoshihiro Yano, Takayuki Chikada
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Publication number: 20110222686Abstract: It is possible to issue an. IC card storing unique encryption key information in such a manner that re-issuing is enabled and sufficient security can be assured. An IC card provider X delivers an IC card having a group code G(A) to a company A and an IC card having a group code G(B) to a company B. When a company staff ? inputs a unique personal code P(?) and performs initialization, in the IC card, calculation is performed according to a predetermined algorithm using the P(?) and G(A). Data uniquely determined by the calculation is stored as encryption key information K(?) in the IC card. Even if the company staff ? loses the IC card, it is possible to obtain the IC card having the same encryption key information K(?) as before by performing initialization again by using the IC card delivered by the IC card provider X.Type: ApplicationFiled: May 19, 2011Publication date: September 15, 2011Inventors: Fukio Handa, Yoshihiro Yano, Takayuki Chikada, Syouzou Niwata
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Publication number: 20110213973Abstract: It is possible to perform encrypted communication between members of a group while assuring a sufficient security compatible with a change of the members. An IC card having the same fixed code F(a) is distributed to all the staffs of company A. When communication is performed between a staff ? and a staff ? belonging to the same project group, ? of the transmission side writes an arbitrary variable code V(1) in the IC card (100a) so as to generate encryption key information K(a1) according to F(a) and V(1) in the IC card and encrypt data D1 by using K(a1). ? of the reception side writes the variable code V(1) received from ? in the IC card (100b) so as to generate encryption key information K(a1). By using this K(a1), the encrypted data D2 received is decrypted to obtain data D3. The fixed code F(a) is different for each of the companies and rewrite-disabled so as to assure security.Type: ApplicationFiled: April 29, 2011Publication date: September 1, 2011Inventors: Fukio Handa, Yoshihiro Yano, Takayuki Chikada, Syouzou Niwata
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Publication number: 20110093928Abstract: A management system manages use of management object provided in facilities by using an information storage medium of a user. An entrance management apparatus, provided in the vicinity of an entrance of the facilities, stores use permission information for permitting the use of the management object on an information storage medium when the user enters the facilities. In the facilities, a use management apparatus, provided for each management object, controls availability or unavailability of the management object based on the use permission information stored on the information storage medium. Additionally, the use management apparatus stores, in the information storage medium, use information showing that the management object is used. Further, a room leaving management apparatus, provided in the vicinity of an exit of the facilities, manages leaving of the user based on the use information stored on the information storage medium.Type: ApplicationFiled: December 21, 2010Publication date: April 21, 2011Applicant: DAI NIPPON PRINTING CO., LTD.Inventors: Hisashi NAKAGAWA, Takehiko ANEGAWA, Yoshihiro YANO, Takayuki CHIKADA
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Patent number: 7869772Abstract: A mobile phone use management system which manages use of the mobile phone includes the mobile phone and a signal transmitting device which transmits the signal for controlling the power supply of the mobile phone. The mobile phone having a non-contact IC card function includes a mobile phone including a power unit which executes power supply of the mobile phone, a non-contact IC card unit which can execute wireless communication with an external terminal device, a power supply control unit which executes control of switching the power supply from the power unit between a power supply stopped state and a power suppliable state based on a signal received from the non-contact IC card unit, and a transmitting unit which transmits a signal for controlling the power supply to the power supply control unit when the non-contact IC card unit receives the signal for controlling the power supply from the external terminal device.Type: GrantFiled: June 14, 2006Date of Patent: January 11, 2011Assignee: Dai Nippon Printing Co., Ltd.Inventor: Takayuki Chikada
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Patent number: 7821390Abstract: Personal computers and other electronic devices that are connected by a network are installed in each individual office. An employee is enabled to use each individual electronic device by performing an authentication process using authentication information in an information recording medium (IC card) that is issued as an employee ID card. In the information recording medium is recorded a code C103 that indicates an electronic device that is to be a report target (for example, the employee's own personal computer 103 installed in a Chiba Branch).Type: GrantFiled: January 22, 2007Date of Patent: October 26, 2010Assignee: Dai Nippon Printing Co., Ltd.Inventors: Takayuki Chikada, Yoshihiro Yano
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Publication number: 20100214589Abstract: A printing system and a program ensuring an improved security. A printing system (1) has printers (20A, 20B, 20C) for printing according to printing data further having a printer managing device (30) having a printing data managing section (311) for limiting the printing data supplied to the printers (20A, 20B, 20C) to printing data having a security level matching the security level based on the installation environment of the printer (20A) and a communication section (34) for providing the limited printing data to the printer (20A).Type: ApplicationFiled: June 5, 2006Publication date: August 26, 2010Inventors: Nobuya Fukano, Yoshihiro Yano, Takayuki Chikada
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Publication number: 20100188687Abstract: There are provided a printing device, a printing system, a program, and a printing method capable of improving security and user-friendliness. The printing system (1) includes a PC (10-1) and printer devices (20-1 to 20-N) connected via a LAN (50). The PC (10-1) has a printing data forming unit (111) for forming print data according to a user instruction, a print data transmission unit (113) for transmitting the formed print data to the printer devices (20-1 to 20-N), a communication unit (17), and the like. The printer devices (20-1 to 20-N) have an external storage device (23) for storing received print data, an input unit (26) for inputting a user print instruction and a user identifier, a card reader (24), a print data management unit (212) for reading out print data corresponding to the user identifier from the external storage device (23), a printer engine (28) for performing printing according to the print data which has been read out, and the like.Type: ApplicationFiled: June 5, 2006Publication date: July 29, 2010Inventors: Nobuya Fukano, Yoshihiro Yano, Takayuki Chikada
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Publication number: 20100073134Abstract: A document management system includes: a document to which an information storage medium is attached; an information storage medium reading device which includes a reading unit for reading document identification information and a unit for transmitting a signal to a processing device when the document identification information becomes unreadable; a portable information storage medium; a first portable information storage medium reading device; a second portable information storage medium reading device; a locking/unlocking device; and an information processing device.Type: ApplicationFiled: June 14, 2006Publication date: March 25, 2010Inventor: Takayuki Chikada
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Patent number: 7574440Abstract: When a user, who has logged onto an information processing apparatus (100), executes a logoff procedure, a saving unit (160) executes the following processes. Firstly, from among the files residing in a data storage unit (110), any files that are recognized as requiring a security protection and hence are to be saved are copied into an external storage device (300) via a network (200), and the original files in the data storage unit (110) are then deleted. At this moment, the address of the copy destination is stored, as management information, into a portable information recording medium (400) possessed by the user. When the user logs onto the information processing apparatus (100) again, a restoring unit (170) restores, based on the management information stored in the portable information recording medium (400), the files saved in the external storage device (300) into the data storage unit (110).Type: GrantFiled: January 20, 2005Date of Patent: August 11, 2009Assignee: Dai Nippon Printing Co., Ltd.Inventors: Kazutoshi Kichikawa, Yoshihiro Yano, Takayuki Chikada, Fukio Handa, Syouzou Niwata
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Publication number: 20090058594Abstract: A management system manages use of management object provided in facilities by using an information storage medium of a user. An entrance management apparatus, provided in the vicinity of an entrance of the facilities, stores use permission information for permitting the use of the management object on an information storage medium when the user enters the facilities. In the facilities, a use management apparatus, provided for each management object, controls availability or unavailability of the management object based on the use permission information stored on the information storage medium. Additionally, the use management apparatus stores, in the information storage medium, use information showing that the management object is used. Further, a room leaving management apparatus, provided in the vicinity of an exit of the facilities, manages leaving of the user based on the use information stored on the information storage medium.Type: ApplicationFiled: November 1, 2005Publication date: March 5, 2009Inventors: Hisashi Nakagawa, Takehiko Anegawa, Yoshihiro Yano, Takayuki Chikada
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Publication number: 20090031397Abstract: A use management system includes: a facility equipment which includes a use control unit for executing control of switching the facility equipment between a usable state and a disabled state; a portable storage medium which stores identification information; a portable storage medium reading device which reads the identification information from the portable storage medium; and an information management device which is connected to and communicates with the facility equipment and the portable storage medium reading device.Type: ApplicationFiled: June 15, 2006Publication date: January 29, 2009Inventor: Takayuki Chikada