摘要:
When a data read request is made at a long unit (two words) in a data processing system including a plurality of data processing unit, a control unit, a plurality (for example, two) of memory devices, data is simultaneously read from both memory devices. While certain data is supplied to the requesting data processing unit, other data is stored in a register. At the next timing, the other data is supplied to the data processing unit from the register. In storing, one word data is stored in a register. At the next timing, this word data and the following word data is stored in memory devices, respectively, at the same time. Pre-loading data and priority changing operations reduce the occurrence of access collision.
摘要:
An information processing apparatus such as a microcomputer consisting of a CPU and a coprocessor is provided. The CPU and the coprocessor are connected through a data bus and an address bus. Switches are disposed in the data bus and the address bus which block communication between the CPU and the coprocessor upon execution of an instruction in the coprocessor, thereby allowing the CPU 1 to operate in parallel to the coprocessor.
摘要:
A current detecting unit (current sensor 12) detecting a current value of a current flowing in a secondary battery 14; an extreme value detecting unit (CPU 10a) detecting a first extreme value of a current after an inrush current flows from the secondary battery to a starter motor after electricity to the starter motor is turned on based on the current value; an inflection point detecting unit (CPU 10a) detecting a first inflection point of the current after the inrush current flows based on a variation of the current value per a predetermined time; and a calculation unit (CPU 10a) selecting the inflection point when timings when the extreme value and the inflection point are detected are separated for a predetermined time or more, and selecting either one of the extreme value or the inflection point in the other cases to set as a starting current, and calculating a starting voltage from the starting current, an internal resistance of the secondary battery, and a voltage before starting being a voltage of the secondary battery before the electricity to the starter motor is turned on, are included.
摘要:
An operating machine includes: a charging time estimation unit that estimates a first estimated charging time required to restore a capacity of a first battery from a first estimated residual capacity to a target capacity value of the first battery and a second estimated charging time required to restore a capacity of a second battery from a second estimated residual capacity to a target capacity value of the second battery; a capacity management implementation unit that implements capacity management on the first battery and the second battery such that the first battery is charged for the first estimated charging time and the second battery is charged for the second estimated charging time; and a discharge amount limitation unit for limiting a discharge amount of the second battery during an idling stop so that a residual capacity of the second battery after discharge is maintained at or above a set value.
摘要:
An opening area between twisted portions of a pair of twisted wires is arranged to be opposite to an opening area of an aperture antenna of each of communication apparatuses. Thus, the use of the pair of twisted wires permits division of electric power among the communication apparatuses and also communication of signals. In particular, among the opening areas between the twisted portions of the pair of twisted wires, only an opening area, which is in between the twisted portion and the twisted portion and is opposite to the aperture antenna, is formed to be larger than a different opening area. This provides a vehicular power line communication system and a transmitter in the system; the system strengthens electromagnetic induction connection between the transmitter and the receiver to permit power line communication.
摘要:
An operating machine includes: a charging time estimation unit that estimates a first estimated charging time required to restore a capacity of a first battery from a first estimated residual capacity to a target capacity value of the first battery and a second estimated charging time required to restore a capacity of a second battery from a second estimated residual capacity to a target capacity value of the second battery; a capacity management implementation unit that implements capacity management on the first battery and the second battery such that the first battery is charged for the first estimated charging time and the second battery is charged for the second estimated charging time; and a discharge amount limitation unit for limiting a discharge amount of the second battery during an idling stop so that a residual capacity of the second battery after discharge is maintained at or above a set value.
摘要:
A crane includes a limiting device to limit a raising/lowering angle of the mast during suspending work to be equal to or less than an upper limit angle which is less than a value of the raising/lowering angle when the mast extends vertically; a release device into which a release instruction for causing the limiting device to release the limitation on the raising/lowering angle of the mast is input; and a first detection section adapted to detect that the mast support device is at an overhanging position where the mast support device pushes up and sets the mast in the work posture. The limiting device is operable whenever the first detection section does not detect that the mast support device is at the overhanging position, even if the release instruction is input into the release device, to prohibit the mast from being tilted rearward beyond the upper limit angle.
摘要:
A microcomputer system includes a CPU, a memory, and a runaway detector. The CPU includes a controller for outputting a task information signal. The task information signal is activated, if the CPU performs the most important task at the present time. A program for the most important task is stored in the memory. The runaway detector includes an address register and a program area checker. The address register stores start and end addresses of the program area. The program area checker determines whether an execution address of the CPU is within the program area by comparing the execution address with each of the start and end addresses. The runaway detector detects a task runaway in the event of conflict between the task information signal and a result of a determination of the program area checker.
摘要:
A microcomputer and method are provided capable of restarting a rewrite program without the need for changing a mode using an external terminal when rewriting nonvolatile memory fails. A CPU of a microcomputer executes a rewrite program to clear FLASH status 0 of flash memory and rewrite all areas in it. The CPU finally writes a rewrite completion code to FLASH status 0. The CPU executes a determination program to read FLASH status 0 of the flash memory. The CPU reads ID status information when read data does not match the rewrite completion code. The CPU re-executes the rewrite program when the data matches ID status information.
摘要:
When each slave ECU is powered on and activated while connected to a communication network through a harness, it reads out divided voltage potential applied by voltage dividing resistors in each ID determining signal line, and allows reception of a data packet transmitted from control ECU when a wait time corresponding to the divided voltage potential elapses. The control ECU successively transmits a data packet containing as a main body ID data to be allocated to each slave ECU, and each slave ECU sets ID data transmitted as its own ID.