Abstract: A semiconductor laser light emitting circuit includes a semiconductor laser diode emitting a laser light by modulating a current supplied thereto, a light intensity detection circuit that detects the laser light and generates a voltage, and a voltage-current conversion circuit converting a voltage into a current supplied to the laser diode. A S/H capacitance is provided to store electric charge and output a voltage to the voltage/current conversion circuit. A first operational amplifier is provided to output a first current charging the S/H capacitance. A rapidly charging circuit is provided to charge the S/H capacitance with a second current. The rapidly charging circuit terminates charging when the voltage is equal to or more than a second reference voltage.

Abstract: An information processing apparatus includes a plurality of data communication devices via a high-speed serial bus with a plurality of traffics in different directions present between the data communication devices. A transfer-rate measuring unit measures a transfer rate of each of the traffics. A parameter adjusting unit adjusts a parameter for a data transfer in each of the traffics in such as manner that the transfer rate of each of the traffics measured by the transfer-rate measuring unit becomes a preset target value.

Abstract: When the control signal EN is changed to “H”, a reference voltage VR is generated by a reference voltage generator 10, and a bias voltage BL is generated by the bias circuit 20. Based on the reference voltage VR and the bias voltage BL, a differential amplifier 30 and an output circuit 40 generates an output voltage VA. A delay circuit 50 outputs a delayed signal DL a certain delay time after the control signal EN riese. A switching signal SW used for control over the first switch 5 is made High when the control signal EN and the delayed signal DL are both High. Accordingly, it is possible to switch the voltage at the output node NO, after the output voltage VA is stabilized.

Abstract: A semiconductor laser driving circuit includes a light amount detector, a frequency determiner, and an initialization circuit. The light amount detector detects an amount of light emitted by a laser diode, and outputs a first voltage corresponding to the amount of light. The frequency determiner determines a frequency for determining a time period of a detecting operation to detect differential quantum efficiency of the laser diode. The initialization circuit performs an initialization operation to detect differential quantum efficiency of the laser diode with a variation of the time period of the initialization operation according to the frequency determined by the frequency determiner.

Abstract: A statistical-information generating unit monitors packet data output from a transaction layer that constitutes architecture of a PCI Express. The result of the monitored is feedback-controlled to a weight-information updating unit in real time, and is reflected in an arbitration table. A priority is set to the packet data corresponding to a quantity of the packet data actually transferred on a serial communication path.

Abstract: A high-speed serial switch fabric is configured to perform a mapping of a traffic class that is capable of differentiating traffics onto a virtual channel. The high-speed serial switch fabric connects a plurality of devices. A traffic-class setting unit sets, when a conflict occurs between devices connected to the high-speed serial switch fabric, the traffic class for each of traffics in the devices having the conflict. A channel setting unit assigns each of set traffic classes to different virtual channels, and gives a priority of data communication to each of the set traffic classes.

Abstract: An electrically actuated brake booster capable of obtaining a desired boost ratio for a given input pressure when an electric actuator is activated as a boost source, so as to ensure a desired operability of a brake pedal. The electrically actuated brake booster comprises: an input piston 22 to which an input thrust is applied through an input rod 9 that moves in coordination with operation of a brake pedal 8; and a booster piston 21 to which a booster thrust is applied by an electric actuator 40 that uses an electric motor 41 as a drive source, such that the input piston 22 and the booster piston 21 are disposed to be movable relative to each other but are normally maintained in a neutral position of relative displacement by means of springs 34. While an amount of relative displacement between the pistons 21 and 22 is determined by the potentiometer 45, the electric motor 41 is controlled to adjust the amount of relative displacement to a predetermined value.

Abstract: An information processing system includes a high-speed serial bus that transmits and receives data independently over communication channels via a tree-structured network including a point-to-point connection, and a control unit that issues a request command based on a request synchronization signal for data with a timing constraint on line synchronous transfer by a line synchronization signal to transmit a plurality of data, including the data with the timing constraint, simultaneously via the high-speed serial bus.

Abstract: A pulse current from a pulse current supply side is fed to a middle part of an anode holding body to which anodes are connected; both end portions of a cathode holding body, to which cathodes are connected, are connected to a negative pole on the pulse power source side; and inductances of wiring between adjacent anodes and inductances of wiring between adjacent cathodes are set at a ratio of 1:2:3:4 in a direction of spacing from a connection to the pulse power source side. Pulse currents are equally fed to each work and it can be ensured that chromium plating treatment of each work is made equal.

Abstract: An information processor that is connected to at least one other information processor via a network, includes a detecting unit that detects an optional device to be used for information processing, as a target optional device, installed on the other information processor, an issuing unit that issues an access request to use the target optional device to the other information processor, a receiving unit that receives an access permission for access to the target optional device from the other information processor, and a processing unit that performs the information processing with the target optional device.

Abstract: A cigarette making apparatus comprises a filter-plug attachment mechanism arranged to butt a filter plug coaxially against a cigarette and then wrap tip paper around the cigarette and filter plug to cover a joint where the cigarette and the filter plug meet, a laser hole-forming device arranged to form air holes in the tip paper by projecting laser light onto the side of the tip paper intended to contact the cigarette and filter plug (back side), while the tip paper is being supplied to the filter-plug attachment mechanism, and an air-permeability measurement device arranged to measure the air permeability of the tip paper with the air holes formed, wherein the air-flow resistance Vf of a filter-tipped cigarette is adjusted by feedback-controlling the laser hole-forming device on the basis of the air permeability measured.

Abstract: A device or a method for supplying a current to a load. A peripheral temperature of the load is detected. Based on the detected peripheral temperature and a predetermined time period, the unit amount of the current being supplied is switched between a first current and a second current.

Abstract: An LED drive circuit includes a plurality of LEDs, a power supply circuit for outputting a variable output voltage to supply electricity to the LEDs, a plurality of drive transistors for driving the respective LEDs, a bias voltage setting circuit for generating and outputting a reference gate voltage for causing the drive transistors to have drain currents having a predetermined constant value, and a minimum drain voltage for causing the drive transistors to have the predetermined constant drain currents when the reference gate voltage is input to the drive transistors, and a voltage detection circuit for sequentially comparing drain voltages of the drive transistors with the minimum drain voltage to output one of the drain voltages smaller than the minimum drain voltage, wherein the power supply circuit controls the output voltage so that the drain voltage output from the voltage detection circuit becomes greater than or equal to the minimum drain voltage.

Abstract: An image forming apparatus includes an image input device that reads an image to obtain image data and a printer engine that forms an image on a medium based on image data. A bus of a PCI Express standard is used to transfer data. Storage areas serving as end points of the standard and hardware resources that transmit data and receive image data to and from the storage areas are connected to an identical switch according to the PCI Express standard. Specifically, an input/output area, an image input device, and a printer engine are connected to one switch, and a storage area, a compressor, and a hard disk is connected to another switch.

Abstract: A data transferring system, in which processes to match settings between devices mutually communicating are simplified, software for the processes is also simplified, and the amount of data to be processed is reduced, is disclosed. In a data transferring system of the PCI Express standard, when settings between facing ports of a switch and an end point are changed, a setting change is transmitted to the port of the end point being one of the facing ports by a configuration request. The port of the end point transmits the setting change to the port of the switch by a message request and the port of the switch executes the setting change. The port of the switch sends a completion message signifying the setting change completion to the port of the end point by a message request. The port of the end point executes the setting change.

Abstract: A data transferring system in which detecting a route from an upper position to a lower position on a tree structure is realized by hardware of communication devices and processes for detecting the above are simplified is disclosed. A root complex broadcasts a search message to a lower node on a tree structure. When a port of the node confirms and receives the search message, the port adds its own information, specifically, the device number of the port, to the data payload part of the search message and sends the search message including the information to a node (end point) located at the lowest position on the tree structure. When the end point receives the search message, the end point sends a reply message to the root complex. The device numbers of the ports where the search message passes through are attached to the reply message.

Abstract: A communication apparatus includes a first antenna device connected to a first communication circuit and a first antenna ground, and a second antenna device connected to a second communication circuit and a second antenna ground. The direction in which the first antenna device resonates is away from the direction in which the second antenna device resonates. The first antenna device is provided with a first waveguide passive element which is radiation-coupled with the first antenna device. The second antenna device is provided with a second waveguide passive element which is radiation-coupled with the second antenna device. Because of the function of the first and second passive elements, radio interference between the first antenna device and the second antenna device installed in the communication apparatus can be reduced.

Abstract: A data transferring system based on the PCI Express standard in which power saving is realized is disclosed. In the data transferring system, a data transferring device transfers image data based on the PCI Express standard by synchronizing with a line synchronizing signal LSYNC. At this time, the data transferring device causes a period between packets (image data) to be transferred in one line cycle of the line synchronizing signal LSYNC to be shorter than a transition period “t1” which is required to transit from a link state L0 to a link state L0s and from the link state L0s to the link state L0. With this, the number of the transition periods “t1” is reduced and the period of the link state L0s is made long.

Abstract: A communication apparatus is disclosed that includes a transmission circuit configured to transmit transmission data to a communication counterpart; a reception circuit configured to receive reception data from the communication counterpart; a storage device configured as at least two buffers including a transmission buffer that stores the transmission data and a reception buffer that stores the reception data; and an address mapping unit configured to perform address mapping of the buffers including the transmission buffer and the reception buffer on the storage device, and adjust the storage capacity of the transmission buffer and the storage capacity of the reception buffer.

Abstract: A battery-operated recording medium controller monitors the ID of a replayed melody and when a replay ID comparing section (A126) makes a decision that a melody of the same ID as the previous one is replayed, a section (A127) for judging necessity of auxiliary information designates an auxiliary information access control section not to acquire auxiliary information (ID3 tag) again from a disc but to reuse auxiliary information stored in an auxiliary information storing section A. Consequently, the number of times of accessing the recording medium is decreased, and when the auxiliary information added to reproduction data like the ID3 tag of an MP3 is acquired, moving distance of an optical pickup is decreased and current consumption can be reduced.