초록 ▼

A moving picture data compression device1is provided with a controller20for inputting a realtime/non-realtime switch signal to switchers30and40when a realtime/non-realtime switch interrupt is received from a personal computer3in order to control a compressor60to compress either realtime data recorde

A moving picture data compression device1is provided with a controller20for inputting a realtime/non-realtime switch signal to switchers30and40when a realtime/non-realtime switch interrupt is received from a personal computer3in order to control a compressor60to compress either realtime data recorded on a video tape5or non-realtime data recorded on a video file7according to a user's desire. When compressing non-realtime data, the controller20sends a synchronization signal to the compressor60, after outputting one field worth of video signal to a buffer50, in order to instruct the compressor60to read data. When the controller20receives a one-field read end interrupt, indicative of the end of the reading operation, from the compressor60, the controller20outputs the next field data to the buffer50.

대표청구항 ▼

A moving picture data compression device1is provided with a controller20for inputting a realtime/non-realtime switch signal to switchers30and40when a realtime/non-realtime switch interrupt is received from a personal computer3in order to control a compressor60to compress either realtime data recorde

A moving picture data compression device1is provided with a controller20for inputting a realtime/non-realtime switch signal to switchers30and40when a realtime/non-realtime switch interrupt is received from a personal computer3in order to control a compressor60to compress either realtime data recorded on a video tape5or non-realtime data recorded on a video file7according to a user's desire. When compressing non-realtime data, the controller20sends a synchronization signal to the compressor60, after outputting one field worth of video signal to a buffer50, in order to instruct the compressor60to read data. When the controller20receives a one-field read end interrupt, indicative of the end of the reading operation, from the compressor60, the controller20outputs the next field data to the buffer50. ue for the steering wheel angular velocity when an abnormality of the terminal voltage is detected. 11. The method according to claim 10, wherein the motor is controlled based on the sum and the value of the current that flows through the motor.12. The method according to claim 10, wherein the fixed value is zero.13. The method according to claim 10, wherein the fixed value is capable of setting the compensation current command value, which is calculated based on the fixed value, to zero.14. The method according to claim 10, wherein the compensation force includes force for assisting the steering wheel to automatically return to a neutral position.15. The method according to claim 10, wherein the compensation force includes force for improving the convergence of the steering wheel to a neutral position when the steering wheel automatically returns to the neutral position.16. The method according to claim 10, wherein the compensation force includes force for compensating for load generated due to friction in a transmission path of steering force between the steering wheel and the steered vehicle wheel.17. The method according to claim 10, further comprising returning to the procedure for estimating the steering wheel angular velocity based on the terminal-to-terminal voltage of the motor after a predetermined time has elapsed without detection of an abnormality.18. A method for controlling an electric power steering system located between a steering wheel and a steered vehicle wheel, wherein the electric power steering system includes a motor, and wherein the motor generates assist force for reducing steering force of the steering wheel and compensation force for compensating for movement of the steering wheel, the method comprising: calculating an assist current command value that corresponds to the assist force based on the steering torque of the steering wheel; estimating the angular velocity of the steering wheel based on a terminal-to-terminal voltage of the motor, and calculating a compensation current command value that corresponds to the compensation force based on the estimated steering wheel angular velocity; controlling the motor based on the difference between the value of a current that flows through the motor and the sum of the assist current command value and the compensation current command value; detecting an abnormality of a terminal voltage of the motor; and substituting zero for the steering wheel angular velocity when an abnormality of the terminal voltage is detected.