摘要:
The present invention relates to an air flowmeter in which an air flow rate sensing element and air temperature sensing element are integrated with each other and mounted on a substrate and at the same time the fluid temperature sensing element is formed on a diaphragm, the fluid flowmeter being capable of measuring a fluid flow rate with high accuracy by suppressing the self-heating of the fluid temperature sensing element. In the invention, an air temperature sensor 11 sensing an air temperature, supplied with a pulse signal as a driving signal from a pulse signal source 19, senses an air temperature based on the pulse signal. While the air temperature sensor 11 is self-heated during an electrical current supplying time period by the pulse signal, it is cooled during an electrical current halting time period. Accordingly, the self-heating of the air temperature sensor 11 by the driving signal is suppressed, and a thermal effect on air flow rate sensing elements 5 to 10 disposed in an air flow downstream side of the air temperature sensor 11 is also reduced.
摘要:
A graphic processing apparatus comprises a graphic processor (1) and a first memory (3, 4); wherein said graphic processor comprises a first port (103) for transmission or reception of data to and from said first memory (3, 4) in synchronism with a first clock (7), and a second port (102) for transmission or reception of data to and from a CPU (8) in synchronism with a second clock (13); and said graphic processing device is so constructed that data can be transmitted between said first memory (3, 4) and said CPU (8) by employing said first port (103) and said second port (102).
摘要:
A microprocessor suitable for processing a large quantity of graphics data. Graphics processing apparatus and method using the microprocessor are also disclosed. The microprocessor (1) independent of a CPU has two ports (102, 103), and performs an instruction fetch and a data access or a memory access simultaneously to two memories (3, 10; 3, 4, 10) coupled through separate buses. In the graphics processing apparatus in which this microprocessor is employed, the graphics transfer between a system memory (10) and a frame memory (4) can be performed at higher speed.
摘要:
A parallel processor comprises a plurality of processing units (13) connected to each other via input/output ports (132). Each processing unit comprises: a local memory (131) for storing programs and data; a local bus for inputting/outputting the program and data to and from the memory and consisting of an address signal line, a data signal line, and a control signal line; a CPU (130) for reading the program from the local memory via the local bus as to process the program, for reading data needed to perform the processing from the memory via the local bus, and for making data which has been updated due to the processing to be stored again by the local memory through the local bus; a plurality of input/output ports (132) capable of connecting the local bus to a plurality of outside buses and needed for the CPU to input/output data to and from another memory of another processing unit or for another CPU of another processing unit to input/output data to and from this local memory; and bus switches for connecting two of the outside buses for the purpose of enabling data transfers between the CPU and the memory which are disposed on individual buses to be performed, wherein a main CPU (10) for setting program and data in the plural processing units and for recovering data and the plural processing units are connected to the main CPU through at least one input/output port of the processing units.
摘要:
A parallel processor comprises a plurality of processing units (13) connected to each other via input/output ports (132). Each processing unit comprises: a local memory (131) for storing programs and data; a local bus for inputting/outputting the program and data to and from the memory and consisting of an address signal line, a data signal line, and a control signal line; a CPU (130) for reading the program from the local memory via the local bus as to process the program, for reading data needed to perform the processing from the memory via the local bus, and for making data which has been updated due to the processing to be stored again by the local memory through the local bus; a plurality of input/output ports (132) capable of connecting the local bus to a plurality of outside buses and needed for the CPU to input/output data to and from another memory of another processing unit or for another CPU of another processing unit to input/output data to and from this local memory; and bus switches for connecting two of the outside buses for the purpose of enabling data transfers between the CPU and the memory which are disposed on individual buses to be performed, wherein a main CPU (10) for setting program and data in the plural processing units and for recovering data and the plural processing units are connected to the main CPU through at least one input/output port of the processing units.