Degaussing apparatus and method for rotatable video display apparatus

A degaussing apparatus of a rotatable video display apparatus, comprising:

• detecting means for detecting a rotation angle and a rotation direction of the video display apparatus;
• control means for controlling a degaussing operation if the rotation angle detected by the detecting means is a predetermined angle;
• and
• a plurality of degaussing means sequentially driven under control of the control means.

A degaussing apparatus of a rotatable video display apparatus, comprising:

• detecting means for detecting a rotation angle and a rotation direction of the video display apparatus;
• control means for controlling a degaussing operation if the rotation angle detected by the detecting means is a predetermined angle;
• and
• direct current degaussing means for controlling a direct current power supply for driving a degaussing coil under control of the control means.

A degaussing apparatus of a rotatable video display apparatus, comprising:

• control means for outputting a pulse width modulation signal and a drive control signal of a degaussing coil when the video display apparatus is rotated by more than a predetermined angle;
• converting means for converting the drive control signal of the degaussing coil to a power supply terminal voltage level and converting the pulse width modulation signal to a direct current voltage;
• and
• a degaussing coil driving integrated circuit device for controlling a current direction and a current amount according to the output signal from the degaussing control signal converting means to thereby perform degaussing function.

A method for degaussing a rotatable video display apparatus, comprising the steps of:

• determining a rotation direction and a rotation angle by rotating a video display apparatus either automatically or manually and measuring the rotation angle based on degree and direction of the rotation;
• determining a control time point for the degaussing on the basis of the measured rotation angle;
• and
• performing the degaussing operation if it is the control time point of the degaussing operation upon determination.

A degaussing apparatus of a rotatable video display apparatus, comprising:

• a support plate installed at an upper surface of a fixing structure;
• a rotative plate rotatably combined onto the support plate on which a television set is mounted;
• a degaussing switch installed at one side of the lower surface of the rotative plate;
• a plurality of contact point parts installed on the support plate at constant intervals and being contacted to the degaussing switch to control ON/OFF of the degaussing switch;
• and
• a degaussing unit for performing degaussing for the video display apparatus when the degaussing switch is turned on,
• wherein the degaussing unit includes a MICOM for transmitting a connection signal after recognizing the degaussing switch is turning on when constant voltage is continuously applied for a constant time to the degaussing switch.