Abstract: A cipher processing device includes: a MAC loss detecting/estimating section which estimates the radio bearer of the lost protocol data unit and a data amount of the lost protocol data unit out of protocol data units produced by division according to the logical channel information included in a packet combining data unit received by a base station of a mobile communication system; an RLC loss detecting/estimating section which detects occurrence of loss in the protocol data units when the protocol data units are put together into a service data unit, and estimates a lost amount of the protocol data units when the protocol data units are put together into the service data unit according to the estimated data amount; and a correction section which corrects a frame number of the service data unit based on the estimated data amount estimated by the detecting/estimating section.

Abstract: [Problem] Problem is to discard erroneous data more surely, and to receive correct data more surely. [Means to solve the problem] A receiving apparatus to receive data by use of a second protocol data unit, which stores a plurality of first protocol data units of a first layer set for each of plural radio bearers and which is based on a second layer corresponding to a lower layer of the first layer, includes a providing means for providing the first protocol data unit, which is stored in the second protocol data unit with specific information specifying the second protocol data unit in the second layer and a discarding means for discarding. another first protocol data unit, which is stored in the second protocol data unit storing the erroneous first protocol data unit with reference to the specific information in the case that a predetermined first protocol data unit includes an error in the first layer.

Abstract: Disclosed are a communication system, a communication device, a communication method, and a program all for preventing disconnection of communication during re-transmission in response to an automatic repeat request in a confirmation mode. The communication system is provided with a first communication device including data transmitting means and data re-transmitting means and a second communication device connected to the first communication device and including data receiving means for receiving data transmitted from the first communication device and data re-transmission requesting means for requesting re-transmission of data not normally received by the data receiving means. The data receiving means determines whether or not the re-transmission data requested by the data re-transmission requesting means will be re-transmitted from the first communication device.

Abstract: A cipher processing device includes: a MAC loss detecting/estimating section which estimates the radio bearer of the lost protocol data unit and a data amount of the lost protocol data unit out of protocol data units produced by division according to the logical channel information included in a packet combining data unit received by a base station of a mobile communication system; an RLC loss detecting/estimating section which detects occurrence of loss in the protocol data units when the protocol data units are put together into a service data unit, and estimates a lost amount of the protocol data units when the protocol data units are put together into the service data unit according to the estimated data amount; and a correction section which corrects a frame number of the service data unit based on the estimated data amount estimated by the detecting/estimating section.

Abstract: An adaptive transmission timing control system is provided in which a base station can correctly instruct a mobile station of a timing control signal indicating the amount of variation in transmission timing and a multipath situation can be estimated in the base station with accuracy. When control information for controlling transmission timing of an upstream signal of the mobile station is generated in the base station, the mobile station is notified of the control information in every frame of the upstream signal. Specifically, the control information is generated by determining the transmission timing using a power delay profile in which frames of the upstream signal are added and synthesized in every RTT (Round Trip Time) cycle of the upstream signal. This makes it possible to heighten resistance to an error in the timing control signal, and transmission timing control can be carried out correctly.

Abstract: In a thermoelectric device, a thermoelectric element has one surface on a low temperature side and the other surface on a high temperature side. A member is attached to at least one of the low- and high-temperature-side surfaces of the thermoelectric element. A temperature detection element is provided between the member and the surface of the thermoelectric element to which the member is attached. A mirror surface state detection device is also disclosed.

Abstract: This invention is to prevent deterioration in communication quality of closed loop transmission power control, which may occur when the change in transmission power cannot keep up with a sudden change in the state of a transmission path. Transmission power control command extractor 4 extracts a transmission power control command from the uplink signal that has been received by receiver 2. Mobile position predictor 7 predicts the future position of the mobile station from its present position as recognized by mobile position recognizer 5 and from its present rate of movement as recognized by mobile velocity recognizer 6. Database 8 records the state of the downlink transmission path as a function of mobile position. Transmission power controller 9 looks up database 8 on the basis of the predicted future position of the mobile station and controls the downlink transmission power of base station BS on the basis of (i) the result of this lookup, and (ii) the transmission power control command.

Abstract: In a data retransmission system, wherein when a response signal (ACK/NACK) from a receiving end is NACK in response to a block data transmitted from a transmitting end, the block data is retransmitted, the transmission efficiency is improved by avoiding unnecessary retransmission of the block data. There is provided a packet composition monitor part (26) that determines that correct data block cannot be received even when the maximum number of retransmissions has been reached in a packet composition part (24) at the data receiving end. For another block data including only the packet data as included in the foregoing block data, a control information producing circuit (34) transmits an ACK signal, whether or not the reception has been performed without any errors, thereby eliminating occurrence of retransmission. In this way, unnecessary block data retransmission can be avoided to improve the transmission efficiency.

Abstract: When a trouble occurs in a machine tool (20) sold by a machine tool manufacturer to a customer, a failure analysis apparatus (11) installed in a service center (10) of the machine tool manufacturer remotely controls the machine tool (20) to obtain operation information or alarm information of the machine tool (20) and performs failure analysis based on such information. In the service center (10), a plurality of failure analysis apparatuses (11) comprising personal computers, and a server (12) which are connected to the failure analysis apparatuses (11) for communication and to which a global IP address for the exclusive use is allocated are installed. Machine tools (20) of customers are connectable to the server (12) via the Internet (30).

Abstract: In a mirror surface state detection device, a light-emitting element obliquely irradiates the mirror surface of a mirror with light. A light-receiving element is arranged adjacent to the light-emitting element to have an optical axis almost parallel to that of the light-emitting element and a tilt angle almost equal to that of the light-emitting element and receives scattered light of the light emitted from the light-emitting element. A condensation detection unit detects the state on the mirror surface on the basis of the scattered light received by the light-receiving element. A moisture detection device is also disclosed.

Abstract: Operational administration system enabling reduction in expense burden on user, and permitting manufacturer to comprehend accurately and timely operational status of machine tools on user end. Operational administration system (1) includes, interconnected via Internet (5): manufacturer-end administration device (20); operational data storage/transmission devices (10) connected to numerical controllers for NC machine tools (15); and user-end terminal device (30). The operational data storage/transmission devices (10) gather from the numerical controllers data pertaining to the operational status of the NC machine tools (15), store the data and, when specified transmission conditions are met, send the stored operational status data to administration device (20) in an e-mail data format.

Abstract: Operational administration system enabling reduction in expense burden on user, and permitting manufacturer to comprehend accurately and timely operational status of machine tools on user end. Operational administration system (1) includes, interconnected via Internet (5): manufacturer-end administration device (20); operational data storage/transmission devices (10) connected to numerical controllers for NC machine tools (15); and user-end terminal device (30). The operational data storage/transmission devices (10) gather from the numerical controllers data pertaining to the operational status of the NC machine tools (15), store the data and, when specified transmission conditions are met, send the stored operational status data to administration device (20) in an e-mail data format.

Abstract: An SIR measurement sections are provided for respective stages of an interference canceller section and SIR values of the respective stages of the interference canceller section is notified to a station of the other end of a communication link to allow the station to determine the number of operation stages of the interference canceller section. The determined number of operation stages is received from the station and the interference canceller section is operated by the determined number of operation stages. This reduces processing time and power consumption. Further, the reduction in processing time makes it possible to perform communication according to an adaptive transmission method in an error-free manner.

Abstract: A machining program transmission system 1 has a control device of an NC machine tool 10, a transmission device 20 and a terminal device 40 are connected via an electrical communication line 2. The terminal device 40 reads an identification information 31 of a machining program, the identification information being attached to a medium 32. The terminal device 40 also reads an identification information 18 of the NC machine tool 10, the identification information being attached to the NC machine tool 10 for carrying out the machining. The terminal device 40 transmits the information to the transmission device 20. The transmission device 20 transmits the machining program corresponding to the program identification information 31 to the NC machine tool 10 corresponding to the machine identification information 18. The control device of the NC machine tool 10 receives and stores the machining program.

Abstract: This invention is to prevent deterioration in communication quality of closed loop transmission power control, which may occur when the change in transmission power cannot keep up with a sudden change in the state of a transmission path. Transmission power control command extractor 4 extracts a transmission power control command from the uplink signal that has been received by receiver 2. Mobile position predictor 7 predicts the future position of the mobile station from its present position as recognized by mobile position recognizer 5 and from its present rate of movement as recognized by mobile velocity recognizer 6. Database 8 records the state of the downlink transmission path as a function of mobile position. Transmission power controller 9 looks up database 8 on the basis of the predicted future position of the mobile station and controls the downlink transmission power of base station BS on the basis of (i) the result of this lookup, and (ii) the transmission power control command.

Abstract: This invention is to prevent deterioration in communication quality of dosed loop transmission power control, which may occur when the change in transmission power cannot keep up with a sudden change in the state of a transmission path. Transmission power control command extractor 4 extracts a transmission power control command from the uplink signal that has been received by receiver 2. Mobile position predictor 7 predicts the future position of the mobile station from its present position as recognized by mobile position recognizer 5 and from its present rate of movement as recognized by mobile velocity recognizer 6. Database 8 records the state of the downlink transmission path as a function of mobile position. Transmission power controller 9 looks up database 8 on the basis of the predicted future position of the mobile station and controls the downlink transmission power of base station BS on the basis of (i) the result of this lookup, and (ii) the transmission power control command.

Abstract: In a mirror surface state detection device, a light-emitting element obliquely irradiates the mirror surface of a mirror with light. A light-receiving element is arranged adjacent to the light-emitting element to have an optical axis almost parallel to that of the light-emitting element and a tilt angle almost equal to that of the light-emitting element and receives scattered light of the light emitted from the light-emitting element. A condensation detection unit detects the state on the mirror surface on the basis of the scattered light received by the light-receiving element. A moisture detection device is also disclosed.

Abstract: In a thermoelectric device, a thermoelectric element has one surface on a low temperature side and the other surface on a high temperature side. A member is attached to at least one of the low- and high-temperature-side surfaces of the thermoelectric element. A temperature detection element is provided between the member and the surface of the thermoelectric element to which the member is attached. A mirror surface state detection device is also disclosed.

Abstract: When a trouble occurs in a machine tool (20) sold by a machine tool manufacturer to a customer, a failure analysis apparatus (11) installed in a service center (10) of the machine tool manufacturer remotely controls the machine tool (20) to obtain operation information or alarm information of the machine tool (20) and performs failure analysis based on such information. In the service center (10), a plurality of failure analysis apparatuses (11) comprising personal computers, and a server (12) which are connected to the failure analysis apparatuses (11) for communication and to which a global IP address for the exclusive use is allocated are installed. Machine tools (20) of customers are connectable to the server (12) via the Internet (30).

Abstract: A machining program transmission system 1 has a control device of an NC machine tool 10, a transmission device 20 and a terminal device 40 are connected via an electrical communication line 2. The terminal device 40 reads an identification information 31 of a machining program, the identification information being attached to a medium 32. The terminal device 40 also reads an identification information 18 of the NC machine tool 10, the identification information being attached to the NC machine tool 10 for carrying out the machining. The terminal device 40 transmits the information to the transmission device 20. The transmission device 20 transmits the machining program corresponding to the program identification information 31 to the NC machine tool 10 corresponding to the machine identification information 18. The control device of the NC machine tool 10 receives and stores the machining program.