Abstract: A recovery apparatus for recovering an ejection state of an ejection opening is disclosed. The recovery apparatus includes a cap member to seal an ejection surface of a droplet ejection head for ejecting a droplet from the ejection opening, and an absorber mounted in the cap member and to absorb ink attached to the ejection surface, so that the ink within a sealed space is suctioned and discharged. The absorber includes, when the ejection surface is sealed with the cap member, a first absorbing part to face the ejection surface at a first side where the ejection opening is provided through a first gap and a second absorbing part to face the ejection surface at a second side where the ejection opening is not provided through a second gap, wherein the first gap is greater than the second gap.

Abstract: A vehicle control apparatus includes: a communication device installed in a vehicle to receive, from outside the vehicle, information relating to another vehicle; and a control device installed in the vehicle to perform travel control on the vehicle using information relating to the vehicle and the information relating to the other vehicle, wherein the control device modifies a control type of the travel control in accordance with either a condition relating to the travel control currently underway or a condition of the vehicle currently being subjected to the travel control.

Abstract: Disclosed is an image forming apparatus that includes plural recording heads that eject liquid droplets and plural maintenance units that correspond to the plural recording heads. The plural maintenance units are capable of separately moving between opposed positions opposed to the plural recording heads and retracted positions not opposed to the plural recording heads, and the plural maintenance units are retracted into the retracted positions in postures different from postures at the opposed positions.

Abstract: A secure LSI device 1 includes an encryption section 2 for encrypting a program, and an external I/F 50 for inputting/outputting a program or data from/to an external memory 100. In the encryption section 2, the operation of a private key arithmetic processing section 20 is prohibited with respect to a sequence whose execution is determined by a key-generation/update sequencer 30 to be impermissible. In the external I/F 50, a program processing section 51 and a data processing section 55 are structured independently from each other.

Abstract: A vehicle control apparatus includes: a communication device installed in a vehicle to receive, from outside the vehicle, information relating to another vehicle; and a control device installed in the vehicle to perform travel control on the vehicle using information relating to the vehicle and the information relating to the other vehicle, wherein the control device modifies a control type of the travel control in accordance with either a condition relating to the travel control currently underway or a condition of the vehicle currently being subjected to the travel control.

Abstract: A vehicle control system includes: a communication device provided in a vehicle to receive information relating to another vehicle from outside the vehicle; and a control device that performs travel control on the vehicle on the basis of information pertaining to a transfer function for a control target value used during travel control of the other vehicle and the control target value of the other vehicle, which is obtained via the communication device of the vehicle. Further, a vehicle control system includes: a communication device provided in a vehicle; and a control device that performs travel control using information relating to another vehicle, which is received from outside the vehicle via the communication device, wherein the communication device transmits information pertaining to a transfer function for a control target value used during the travel control.

Abstract: A secure LSI device 1 includes an encryption section 2 for encrypting a program, and an external I/F 50 for inputting/outputting a program or data from/to an external memory 100. In the encryption section 2, the operation of a private key arithmetic processing section 20 is prohibited with respect to a sequence whose execution is determined by a key-generation/update sequencer 30 to be impermissible. In the external I/F 50, a program processing section 51 and a data processing section 55 are structured independently from each other.

Abstract: An image forming apparatus includes a suction unit; a pressure unit configured to pressurize the inside of a supply channel extending from a liquid container to a recording head at a pressurizing position along the supply channel; an opening and closing unit configured to open and close the supply channel at a position downstream of the pressurizing position; and a control unit configured to cap a nozzle surface with a cap and suction ink from nozzles with the suction unit, to move the cap away from the nozzle surface after pressurizing the inside of the supply channel with the pressure unit to a pressure greater than or equal to atmospheric pressure, to wipe the nozzle surface with a wiping part after closing the supply channel with the opening and closing unit, and to open the supply channel with the opening and closing unit after wiping the nozzle surface.

Abstract: An development environment of a high security level is provided for a key-installed system. Development of a program for a system having an LSI device which includes a secure memory is performed by providing another LSI device having the same structure and setting the provided LSI device to a development mode which is different from a product operation mode. Alternatively, the provided LSI device is set to an administrator mode to perform development and encryption of a key-generation program. The LSI device is set to a key-generation mode to execute the encrypted key-generation program, thereby generating various keys.

Abstract: In a target apparatus which stores at least one piece of domain key information in a first area and a plurality of pieces of content key information each associated with any one of the domain key information in a second area, a method for generating data for detecting tampering of the content key information. The method comprises the steps of encrypting the content key information associated with one of the domain key information using a chain encryption technique, extracting data at predetermined positions in the encrypted content key information, concatenating the pieces of data extracted at the predetermined positions in the encrypted content key information to obtain concatenated data, performing a hash calculation with respect to the concatenated data to obtain a hash value, storing check values corresponding to the data at the predetermined positions in plain text, in the target apparatus, and storing the hash value in the target apparatus.

Abstract: Disclosed is a vehicle group control method which controls traveling of a vehicle group having n vehicles (where n=2, 3, . . . ). In extending the inter-vehicle distance between a (j?1)th vehicle from the front and a j-th vehicle (where j=2, 3, . . . , n) within the vehicle group, the relative speed of the j-th vehicle with respect to the (j?1)th vehicle during the changing of the inter-vehicle distance is changed as indicated by a graph with a minimum value on a time axis.

Abstract: An image-forming apparatus includes a head unit configured to include line-type recording heads for ejecting ink droplets, a transport mechanism disposed facing the recording head and configured to transport a sheet, a maintain-recovery mechanism disposed downstream from the transport mechanism in a direction in which the sheet is transported and configured to maintain and recover the line type recording heads, and a head drive mechanism configured to move the head unit between a position facing the transport mechanism and a position facing the maintain-recovery mechanism in the direction in which the sheet is transported.

Abstract: A recovery apparatus for recovering an ejection state of an ejection opening is disclosed. The recovery apparatus includes a cap member to seal an ejection surface of a droplet ejection head for ejecting a droplet from the ejection opening, and an absorber mounted in the cap member and to absorb ink attached to the ejection surface, so that the ink within a sealed space is suctioned and discharged. The absorber includes, when the ejection surface is sealed with the cap member, a first absorbing part to face the ejection surface at a first side where the ejection opening is provided through a first gap and a second absorbing part to face the ejection surface at a second side where the ejection opening is not provided through a second gap, wherein the first gap is greater than the second gap.

Abstract: A secure LSI device 1 includes an encryption section 2 for encrypting a program, and an external I/F 50 for inputting/outputting a program or data from/to an external memory 100. In the encryption section 2, the operation of a private key arithmetic processing section 20 is prohibited with respect to a sequence whose execution is determined by a key-generation/update sequencer 30 to be impermissible. In the external I/F 50, a program processing section 51 and a data processing section 55 are structured independently from each other.

Abstract: An LSI includes a first decryptor which receives first encrypted key data, and decrypts the first encrypted key data using a first cryptographic key, thereby generating first decrypted key data, a second cryptographic key generator which generates a second cryptographic key based on a second ID, a second encryptor which encrypts the first decrypted key data using the second cryptographic key, thereby generating second encrypted key data, and a second decryptor which decrypts the second encrypted key data using the second cryptographic key, thereby generating second decrypted key data. At a time of key setting, the second encryptor stores the second encrypted key data in a storage unit. At a time of key usage, the second decryptor reads the second encrypted key data from the storage unit.

Abstract: The present invention relates to a confidential information processing device, a confidential information processing apparatus, and a confidential information processing method, and particularly to a confidential information processing device which performs multiple cryptographic computation for different target data included in a data stream. With this configuration, the context control unit outputs the stream on which the cryptographic computation is performed to an external device or other stream analysis unit. Thus, by setting the number of cryptographic computation on a correspondence table, the number of computation can be set to any number. Thus, the confidential information processing device according to the present invention can perform any number of cryptographic computations on one stream. Furthermore, without outputting the stream whenever a cryptographic computation is completed, multiple cryptographic computations can be performed with one stream input.

Abstract: Disclosed is an image forming apparatus that includes plural recording heads that eject liquid droplets and plural maintenance units that correspond to the plural recording heads. The plural maintenance units are capable of separately moving between opposed positions opposed to the plural recording heads and retracted positions not opposed to the plural recording heads, and the plural maintenance units are retracted into the retracted positions in postures different from postures at the opposed positions.

Abstract: A secure LSI device 1 includes an encryption section 2 for encrypting a program, and an external I/F 50 for inputting/outputting a program or data from/to an external memory 100. In the encryption section 2, the operation of a private key arithmetic processing section 20 is prohibited with respect to a sequence whose execution is determined by a key-generation/update sequencer 30 to be impermissible. In the external I/F 50, a program processing section 51 and a data processing section 55 are structured independently from each other.

Abstract: A check computation circuit executes a computation corresponding to a computation for generating confidential CRC data, with respect to confidential data read from a non-volatile device. A comparison circuit compares the result of the computation in the check computation circuit with confidential CRC data read from the non-volatile device. When the result of the comparison indicates a mismatch, i.e., an error is detected, an encryption circuit encrypts the confidential data and the confidential CRC data using a secret key registered in a secret key register, and outputs the encrypted confidential data and confidential CRC data to the outside of a semiconductor integrated circuit.

Abstract: A secure LSI device 1 includes an encryption section 2 for encrypting a program, and an external I/F 50 for inputting/outputting a program or data from/to an external memory 100. In the encryption section 2, the operation of a private key arithmetic processing section 20 is prohibited with respect to a sequence whose execution is determined by a key-generation/update sequencer 30 to be impermissible. In the external I/F 50, a program processing section 51 and a data processing section 55 are structured independently from each other.