Abstract: A washing machine includes a wobbling device having a rotary blade. The wobbling device causes a wobbling action of a washboard without rotating the washboard during a washing mode operation, and rotates the rotary blade in one direction to allow a sufficient amount of wash water to flow upward through an ascending water current guide and fall from an upper portion of a spin-drying tub onto clothes contained in the spin-drying tub, thus effectively washing the clothes. The washboard is installed at a lower portion in the spin-drying tub such that it wobbles upward and downward. The rotary blade is installed under the washboard, and is rotated in one direction by torque of a washing shaft. The rotary blade is fitted over a boss which couples a vertical rotary shaft of the wobbling device to the washing shaft, and is rotated by the torque of the washing shaft. The water current guide extends along a sidewall of the spin-drying tub from a lower end to an upper end of the spin-drying tub.

Abstract: A method of controlling a washing machine is provided. The washing machine control method executes a washing process with a wobbling device. In the method, an operation of causing a washboard to wobble and an operation of rotating a spin-drying tub in the washing process are alternately performed. An operation of causing a washboard to wobble in a wobbling position and an operation of rotating a spin-drying tub in a washing process several times to mix laundry is performed, such that upper laundry and lower laundry can be uniformly washed, thus improving a laundry cleaning performance. Further, entangled laundry can be prevented from being rinsed by causing the washboard to wobble in the wobbling position before rinsing water is supplied.

Abstract: A washing machine, provided with a twistable washing tub inside a perforated spin-drying tub for improving its cleaning effect, is disclosed. The twistable washing tub is repeatedly twisted and untwisted at its sidewall during a washing process, thus repeatedly compressing and releasing the laundry and improving the laundry cleaning effect. The washing machine includes an outer tub containing water therein, and a drive unit installed at a position outside the outer tub and generating rotating force. A washing tub is rotatably set within the outer tub, and is connected to the drive unit at its lower portion. This washing tub is twistable and deformable at its sidewall to compress the laundry contained therein during a rotating action of the washing tub.

Abstract: Disclosed is a washing machine comprising a heating tank accommodating the washing and washing water; a heating part heating the washing water in the heating tank; and a circulation pump circulating the washing water in the heating tank. With this configuration, the present invention provides the circulation pump circulating washing water in the heating tank, thereby preventing the washing from oxidizing, improving a washing efficiency especially improving a washing efficiency according to washing material, and saving washing water. Further, water supply and drain can be easily performed.

Abstract: An apparatus implements a method of controlling a disk drive during initial stages of a wake-up mode when input of a command to the disk drive occurs during a sleep mode. Immediately upon receipt of a command input to a microprocessor controller (21) of the disk drive during sleep mode, power is restored to circuits (except for the spindle motor driver circuit) which were disabled during sleep mode. Then, a discrimination is made whether the input command is for picking up data from the disk and driving the disk to process the data. The discrimination is made by comparing the input command with a predetermined reference command stored in a memory (22) associated with the microprocessor. If the input command is not for driving the disk, the command is performed immediately.