Abstract: A passage channel is calculated by taking into account a plurality of requirements having different importance degrees. A channel calculation unit (202) of a transport control server (100) calculates a plurality of passage channel candidates with respect to a passage setting request wherein an active passage candidate and a standby passage candidate are paired in the passage channel candidate; and calculates the occurrence number of phenomena that violate a predetermined requirement relating an operation of the active passage and the standby passage, or a value of a network element for determining whether the requirement is violated, with respect to each passage channel candidate. A cost calculation unit (205) calculates the cost of a passage channel from the calculated number of occurrence, network element value, and a predetermined cost calculation coefficient corresponding to the requirement.

Abstract: A data synchronization system transfers data between multiple data synchronization servers connected to a network path. The data synchronization server calculates a transfer delay on a network path involved in the transfer of data of multiple applications in an application server to another data synchronization server, predicts a time at which the transfer delay will exceed the requested delay of each application, and controls the transmission rate of data for each application so that times, at which the transfer delays will exceed the requested delays of all applications, become the same. In this way, the data synchronization system controls the data synchronization of applications between remotely installed distributed data centers so that the requested delay of each application is satisfied as much as possible.

Abstract: A rotation sensor includes a detecting portion, a rotational state determining portion and a pulse generating portion. The detecting portion detects a rotation of a rotational member and outputs a detection signal. The rotational state determining portion determines a rotational state of the rotational member on the basis of the detection signal in a predetermined period. The pulse generating portion generates and outputs a first pulse and a second pulse, of which waveforms differ from each other, in response to a rotational direction of the rotational member after the predetermined period. The pulse generating portion further generates and outputs a third pulse regardless of the rotational state of the rotational member in the predetermined period.

Abstract: There is a need to extract a traffic related to congestion in consideration of an entire network. Multiple traffics are received from multiple nodes. There is available information about bandwidths for the traffics passing through nodes. Bandwidths for the traffics at an entry node and an exit node are extracted from the bandwidth information. Each traffic first passes through the entry node and last passes through the exit node. A bandwidth is dropped when the traffic passes through the nodes. The dropped bandwidth is calculated based on the extracted bandwidths for the traffics at the entry node and the exit node. The calculated bandwidth to be dropped is compared with a specified first bandwidth. One or more first traffics are extracted because of having the dropped bandwidth larger than the first bandwidth. Based on band information, a second traffic is extracted from the extracted first traffic.

Abstract: A transport control server (100) wherein a conversion table including a pre-conversion identifier and a post-conversion identifier, and a conversion type indicating the aggregate/transfer of a path are previously stored for each two segments that are connected to each other. When devices (111, 118) at the endpoints of the path are specified, the transport control server (100) calculates the route between the devices to identify one or a plurality of gateway nodes (112 to 117) on the route. Also, the transport control server (100) acquires from a storage unit the pre-conversion identifier, post- conversion identifier, and conversion type corresponding to two segments that are connected by the identified nodes for each of the identified nodes, and sets the acquired identifiers and conversion type to each of the nodes.

Abstract: A transport control server (TCS) identifies a backup path B switched over to from an active path A due to a path change or a fault, based on information in a path change notification or a fault notification. The TCS identifies a backup path C affected by the switchover from the active path to the backup path. The TCS identifies nodes in which a setting change to delete the backup path C is needed and nodes in which a backup path D should be set up as an alternative to the backup path C and transmits a setting change notification to these nodes.

Abstract: A sensor minimizes effects of sensor element misalignment with respect to a magnet. In one embodiment, a sensor comprises a magnet, first, second, and third sensor elements positioned in relation to the magnet, and a signal processing module to process output signals from the first, second, and third sensor elements and generate first and second signals for minimizing effects of positional misalignment of the first, second, and third sensor elements with respect to the magnet by maximizing a quadrature relationship of the first and second signals.

Abstract: A rotation sensor includes a detecting portion, a rotational state determining portion and a pulse generating portion. The detecting portion detects a rotation of a rotational member and outputs a detection signal. The rotational state determining portion determines a rotational state of the rotational member on the basis of the detection signal in a predetermined period. The pulse generating portion generates and outputs a first pulse and a second pulse, of which waveforms differ from each other, in response to a rotational direction of the rotational member after the predetermined period. The pulse generating portion further generates and outputs a third pulse regardless of the rotational state of the rotational member in the predetermined period.

Abstract: In one aspect, a control circuit to control a speed of a motor includes a PWM oscillator configured to generate a PWM output signal having a duty cycle. The speed of the motor is controlled by the PWM output signal to be proportional to the duty cycle. The control circuit also includes a duty cycle control circuit responsive to a duty cycle selection signal and coupled to the PWM oscillator. The duty cycle control circuit is configured to compare a voltage reference and a supply voltage. The duty cycle control circuit controls the duty cycle of the PWM output signal to be inversely proportional to the supply voltage.

Abstract: In one aspect, a control circuit to control a speed of a motor includes a PWM oscillator configured to generate a PWM output signal having a duty cycle. The speed of the motor is controlled by the PWM output signal to be proportional to the duty cycle. The control circuit also includes a duty cycle control circuit responsive to a duty cycle selection signal and coupled to the PWM oscillator. The duty cycle control circuit is configured to compare a voltage reference and a supply voltage. The duty cycle control circuit controls the duty cycle of the PWM output signal to be inversely proportional to the supply voltage.

Abstract: A method for detection of passing magnetic articles which includes an initial step of sensing an ambient magnetic field and generating a voltage, Vsig, proportional to the magnetic field. A threshold voltage is generated as a percentage of the peak-to-peak voltage of Vsig. The method further includes the step of generating a proximity detector output voltage that becomes one binary level when Vsig rises to exceed the threshold voltage and another binary level when Vsig falls to below the threshold voltage. The threshold voltage is periodically updated to remain the percentage, within a predetermined tolerance, of the peak-to-peak voltage of Vsig in response to changes that may occur in the peak voltages of Vsig.

Abstract: The Hall sensor circuit includes a Hall element that is preferably followed by a Hall-voltage amplifier, and a pole end of a magnet is preferably fixed adjacent to the Hall element. The amplifier output is connected directly to one of a pair of differential inputs of a Schmitt trigger circuit and is also connected, via a single or a dual-polarity track and hold circuit, to the other of the differential Schmitt inputs. The dual-polarity track and hold circuit causes the voltage across a capacitor to track positive and negative Hall voltage slopes, and to hold the positive-going peaks and negative-going peaks of the Hall voltage presented to the fore-mentioned other Schmitt input so that when the difference voltage between the Hall voltage and the held voltage of the capacitor exceeds a positive or negative threshold of the Schmitt circuit, the Schmitt circuit output changes binary state indicating the approaching edge or the receding edge of a ferrous-gear tooth.