Abstract: The method and apparatus use two inequalities to determine whether an estimated value obtained from conventional method and a correct value obtained from ideal conversion is identical. When those values are the same, the estimated value is not corrected; otherwise, according to the difference between those values, one is added or subtracted from the estimated value to obtain the correct result.

Abstract: The method and apparatus use two inequalities to determine whether an estimated value obtained from conventional method and a correct value obtained from ideal conversion is identical. When those values are the same, the estimated value is not corrected; otherwise, according to the difference between those values, one is added or subtracted from the estimated value to obtain the correct result.

Abstract: A computer security system for protecting a portable computer unit such as personal computers, laptops and PDAs from being taken away or moved by anyone other than the owner when such computer units are being used in the public, comprising a control unit, a motion detector and an alarm device, wherein the motion detector detects any unauthorized movement of the portable computer and generates a motion signal to the control unit. The control unit, which connects to the portable computer unit, activates the alarm device when a motion signal is received from the motion detector, such that an alert signal is produced by the alarm device to scare away anyone who wishes to steal or move the computer and to alert the owner and people around the portable computer unit when the portable computer unit is moved in an unauthorized manner.

Abstract: A computer graphics display system contains a graphics processing unit. A graphics processing unit extracts the display information needed for executing graphics display from system memory via the north bridge according to the graphics display command from the CPU and then processes the display information. The display information is stored directly in the system memory so that the graphics processing unit can directly access the system memory without the use of a graphics buffer. This lowers the system cost.

Abstract: The method and apparatus use two inequalities to determine whether an estimated value obtained from conventional method and a correct value obtained from ideal conversion is identical. When those values are the same, the estimated value is not corrected; otherwise, according to the difference between those values, one is added or subtracted from the estimated value to obtain the correct result.