摘要:
A vehicle steering control system is provided in which a power steering mechanism provides adequate assistance to a steering reactive force even when a steering angle correction mechanism is actuated in addition to a vehicle operator's steering operation, thereby maintaining a feeling of stable steering without causing the operator to feel unusual. Considering a correction amount of front wheel steering angle provided by an auxiliary steering control section, a power steering control section corrects an assist current from an assist current map prepared based on a vehicle speed and a steering torque, the correction of which is made by converting the correction amount of front wheel steering angle into a correction amount of power steering electric motor current to correct the assist current, or into a vehicle speed correction amount to correct the vehicle speed.
摘要:
To provide means that can hide refresh operations even when the data width of a cache line differs from that of the external data bus in a memory that uses a cache memory and a DRAM consisting of a plurality of banks. A semiconductor device consisting of a plurality of memory banks BANK0 to BANK127, each consisting of a plurality of memory cells, as well as a cache memory CACHEMEM used to retain information read from the plurality of memory banks. The cache memory CACHEMEM consists of a plurality of entries, each having a data memory DATAMEM and a tag memory TAGMEM. The data memory DATAMEM consists of a plurality of sub lines DATA0 to DATA3 and the tag memory TAGMEM Consists of a plurality of valid bits V0 to V3 and a plurality of dirty bits D0 to D3. It is possible to realize a memory with excellent operability, causing no refresh operation to delay external accesses. In other words, it is possible to realize a memory compatible with an SRAM in which refresh operations are hidden from external.
摘要:
Technology capable of improving reliability of a semiconductor device is provided. In the present invention, a gate pad GPj formed on a front surface of a semiconductor chip CHP1 is disposed so as to be closer to a source lead SL than to other leads (a drain lead DL and a gate lead GL). As a result, according to the present invention, a distance between the gate pad GPj and the source lead SL can be shortened, and thus a length of the wire Wgj for connecting the gate pad GPj and the source lead SL together can be shortened. Thus, according to the present invention, a parasitic inductance that is present in the wire Wgj can be sufficiently reduced.
摘要:
An image pickup apparatus capable of giving a shooter the same rotary operation feeling regardless of the rotating direction, and displaying an erect image to a shooter at all times. A two-axis hinge is provided with a first bearing that supports a display unit rotatably in right and left directions and a second bearing that supports the display unit in rotated states rotatably so as to direct the screen to front and rear sides. A first axial rotation detector detects the rotation of the display unit by the first bearing. A second axial rotation detector detects the rotation of the display unit in the rotated states by the second bearing to direct the screen to the front and rear sides. A control unit switches display orientation of an image displayed on the display unit based on detection results from the first and second axial rotation detectors.
摘要:
A steering control section has a first steering angle correction amount calculating section, a second steering angle correction amount calculating section, and a motor rotational angle calculating section. The first correction amount calculating section calculates a first correction amount based on a vehicle speed and an actual steering wheel angle. The second correction amount calculating section calculates a second correction amount through multiplying a control gain corresponding to the vehicle speed with a value calculated by low-pass filtering a differential value of steering wheel angle. The motor rotational angle calculating section calculates a motor rotational angle corresponding to the value adding the first and second steering angle correction amount, and outputs it to a motor driving section so as to drive an electric motor for correcting the steering angle. Thereby, an unstable vehicle behavior due to a resonance of a yaw motion caused in the steering operation can be suppressed.
摘要:
An imaging apparatus includes a display unit capable of being displaced between a non use state and a use state in such a manner that a display surface displaying an image of a subject is directed at least to the subject or a user in the use state, and a display control unit that inverts a direction in a vertical direction of the image of the subject displayed on the display surface in response to an operation on an operation member when the display unit is in the use state and cancels the inversion when the display unit is in the non use state.
摘要:
A memory cell capacitor (C3) of a DRAM is formed by use of a MIM capacitor which uses as its electrode a metal wiring line of the same layer (M3) as metal wiring lines within a logic circuit (LOGIC), thereby enabling reduction of process costs. Higher integration is achievable by forming the capacitor using a high dielectric constant material and disposing it above a wiring layer in which bit lines (BL) are formed. In addition, using 2T cells makes it possible to provide a sufficient signal amount even when letting them operate with a low voltage. By commonizing the processes for fabricating capacitors in analog (ANALOG) and memory (MEM), it is possible to realize a semiconductor integrated circuit with the logic, analog and memory mounted together on one chip at low costs.
摘要:
A memory cell capacitor (C3) of a DRAM is formed by use of a MIM capacitor which uses as its electrode a metal wiring line of the same layer (M3) as metal wiring lines within a logic circuit (LOGIC), thereby enabling reduction of process costs. Higher integration is achievable by forming the capacitor using a high dielectric constant material and disposing it above a wiring layer in which bit lines (BL) are formed. In addition, using 2T cells makes it possible to provide a sufficient signal amount even when letting them operate with a low voltage. By commonizing the processes for fabricating capacitors in analog (ANALOG) and memory (MEM), it is possible to realize a semiconductor integrated circuit with the logic, analog and memory mounted together on one chip at low costs.
摘要:
A steering control section has a first steering angle correction amount calculating section, a second steering angle correction amount calculating section, and a motor rotational angle calculating section. The first correction amount calculating section calculates a first correction amount based on a vehicle speed and an actual steering wheel angle. The second correction amount calculating section calculates a second correction amount through multiplying a control gain corresponding to the vehicle speed with a value calculated by low-pass filtering a differential value of steering wheel angle. The motor rotational angle calculating section calculates a motor rotational angle corresponding to the value adding the first and second steering angle correction amount, and outputs it to a motor driving section so as to drive an electric motor for correcting the steering angle. Thereby, an unstable vehicle behavior due to a resonance of a yaw motion caused in the steering operation can be suppressed.
摘要:
A memory includes first circuit RFPDRAM including memory cells and operating in response to first clock signal, second circuit and third circuit coupled with first circuit and bus coupling first circuit to second and third circuits. The second circuit outputs in response to second clock signal, first address signal to first circuit. The third circuit outputs in response to third clock signal, second address signal to first circuit. The first circuit includes refresh control circuit executing refresh operation for memory cells in response to fourth clock signal and address latch for storing first or second address signal in response to first clock signal. The first clock signal has frequency equal to or more than sum of frequencies respectively of second, third, and fourth clock signals.