Electronic display unit
AssigneeSumitomo Wiring Systems, Ltd.
InventorKatsutoshi Kato
Life of this patent
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Abstract
There is disclosed an electronic display unit wherein a motor driving portion including a CPU and a driving IC controls a drive current to a motor (11) so that the motor (11) initially rotates at a low speed and subsequently rotates at a high speed to switch the speed of rotation of a case (3) from a low speed to a high speed, whereby operability is ensured if a rotation control switch is disposed on a front surface of the case (3), preventing conventionally increased size of the unit as well as alleviating user's feeling that rotation requires too much time.
Claims8
An electronic display unit including a support box element fixed to a fixing member, and a unit body having a display and rotatably supported by said support box element, said electronic display unit comprising:
- a motor housed in said support box element;
- a control switch is provided which operates to selectively rotate said motor either in a regular direction or in the reverse direction;
- a device for transferring the rotation of said motor to said unit body to rotate said unit body through a predetermined angle until regular rotation of said motor in said regular direction causes the unit body to move to a receiving position and reverse rotation of said motor in said reverse direction causes the unit body to move to a non-use position;
- and
- a motor driving portion housed in said support box element for supplying a drive current to cause said motor to move either in said regular direction or in said reverse direction by operation of said control switch, said motor driving portion adapted to control said drive current so that said motor rotates at a low speed during a time interval between start of rotation and a predetermined angle and subsequently rotates at a high speed.
A method of moving a generally planar unit between a first position, wherein a plane of said unit is substantially vertical, and a second position, wherein said plane is substantially horizontal, said method comprising
- starting from either said first position or said second position, rotating said unit for a first period of time at a first speed, and continuing said rotation for a second period of time at a second speed, said second speed being greater than said first speed.
A method of moving a generally planar unit between a first position, wherein a plane of said unit is substantially vertical, and a second position, wherein said plane is substantially horizontal, said method comprising
- starting from either said first position or said second position, rotating said unit and through a first angle at a first speed, and continuing said rotation through a second angle at a second speed, said second speed being greater than said first speed.
Dependencies are inferred from the claim text.