摘要:
A computer network system and a method for fast delivery of an interrupt message over a computer network enables a first processor coupled to the computer network to very quickly send an interrupt message to a second processor coupled to the computer network, by directly writing the interrupt message to a doorbell address range associated with the second processor in the PCI memory space of a first PCI bus to which the first processor is coupled. The doorbell address range is mapped to a doorbell space in the PCI memory space of a second PCI bus to which the second processor is coupled. The first PCI bus is coupled to the computer network through a first PCI network adaptor, which processes the write transaction and send it to the network. The second PCI bus is coupled to the computer network through a second PCI network adaptor, which receives the write transaction from the network and transforms the write transaction into an interrupt message to the second processor.
摘要:
A PCI (peripheral component interconnect) network adaptor manages read/write requests through the establishment of dynamic queues. The PCI network adaptor establishes a unique queue for each destination node that enables the requests for each node to be processed separately. The PCI network adaptor determines whether a remote read/write request should be added to the linked list for the destination node of the request or whether the request should be rejected. If the number of pending requests for the destination node is below a predetermined threshold and the entire buffer is not full, then the request is added to the linked list for the destination node. Otherwise, the request is rejected. For write requests, if the request is added to the linked list for the destination node, then any pending read requests for that node are aborted.
摘要:
An overflow control unit stores, in a FIFO buffer, data generated by a processor. The overflow control unit sets a predetermined flag, upon detecting that a FIFO buffer is full or nearly full. The overflow control unit stores, in a saving buffer, data sent from the processor, while the flag is set. Thereafter, the overflow control unit notifies the processor, by an interrupt, of an effect that an available capacity of the FIFO buffer rises above a predetermined threshold.Upon receiving an interrupt, the processor transfers to the FIFO buffer data saved in the saving buffer. Upon a completion of transferring to the FIFO buffer all data saved in the saving buffer, the processor resets the flag. This allows the overflow control unit to again store in the FIFO buffer, data sent from the processor. The overflow control unit also monitors the volume of data stored in the saving buffer, and notifies the processor, by an interrupt, of an effect that the saving buffer is full. Upon receiving an interrupt, the processor expands an available capacity of the saving buffer.
摘要:
A plurality of processors, each with caches provided for a plurality of processor modules and a local storage in which a main storage is distributed and arranged are mutually connected through an internal snoop bus. The processor modules are mutually connected through a second system bus. By using two separate buses, cache coherence operations within a processor group is kept separate from cache coherence operations outside the processor group.
摘要:
A terminal apparatus of the present invention having a position detection unit and a display unit further includes a geographic information storage unit for storing three-dimensional terrain shape information, an attitude detection unit for detecting the attitude of the terminal apparatus, and an image creation unit for obtaining information on a vector vertical to the display unit based on information on the attitude obtained by the attitude detection unit and creating a three-dimensional terrain image at a viewpoint using a current position obtained by the position detection unit, information on a line-of-sight defined by the information on the vector, and the three-dimensional terrain shape information in the geographic information storage unit. When the attitude of the terminal apparatus is changed, the three-dimensional terrain image on the display unit is updated, following a change in the attitude of the terminal apparatus.
摘要:
A system and method are provided for efficiently writing data from one bus device to another bus device across a network. Data packets to be transmitted are ordered and assigned sequence numbers and expected sequence numbers. The expected sequence number of a data packet corresponds to the sequence number of the data packet immediately prior to the current data packet. When a data packet arrives at the receiving bus, its expected sequence number is compared against the sequence numbers of the previous data packets received. If the previously-received data packet bears the sequence number corresponding to the expected sequence number of the newly arrived data packet, the newly arrived data is stored, and an acknowledgement is sent. If a match cannot be found then a retry request message is sent.
摘要:
An electrical equipment to be acted on can be remote-controlled with enhanced convenience. A remote control device 1 includes a main body unit 2 having an actuating portion 4 for actuating the electrical equipment 10, an infrared light emitting portion 5 for radiating the infrared light for controlling the electrical equipment and a display unit 6 for demonstrating the information at least displaying the operating state of the electrical equipment. The remote control device 1 also includes a loading unit 3 connected to the main body unit 2 and which is adapted for being worn on or detached from the arm or the wrist of a user. A power source for furnishing the electric power to at least the actuating portion 4, light emitting portion 5 and the display unit 6 is provided within the interior of the loading unit 3.
摘要:
A frozen dessert dispenser for dispensing ice cream etc. includes a heat-insulating box having a side formed with an opening closed and opened by a heat-insulating door, a dispensing cylinder including a piston and a pack accommodating chamber defined between the piston and a lid closing an upper opening of the cylinder. A frozen dessert pack is accommodated into the pack accommodating chamber when the lid is opened. The dispensing cylinder is mounted on a bracket further mounted on a backside of the door. The bracket positions the dispensing cylinder in the heat-insulating box and is rotated relative to the door so that the dispensing cylinder is inclined from a standing position where the dispensing cylinder stands along the door to a inclined position where an upper end of the dispensing cylinder is spaced away from the door.
摘要:
A transmission acknowledge flag is provided in a data transmission request command. When a send/receive control apparatus receives the data transmission command the transmission acknowledge flag, in an enable state a transmission counter is incremented. When the data transmission command is executed and data transmission is completed, the send/receive control apparatus causes the transmission counter to decrement. The send/receive control apparatus determines whether the data transmission has been completed based on the count value of the transmission counter.
摘要:
An object recognition system using the image processing in which an area having a unique feature is extracted from an input image of an object, the unique image is registered in a shade template memory circuit as a shade template, the input image is searched for an image similar to the shade template registered by a shade pattern matching circuit, the position of an object is determined for each template, the speed and direction of movement of the object is determined from the positional information, and the results thereof are integrated by a separation/integration circuit, thereby recognizing the whole of the moving object.