US20010011696A1 - Method for controlling screen direction of a video display stand - Google Patents
Method for controlling screen direction of a video display stand Download PDFInfo
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- US20010011696A1 US20010011696A1 US09/770,447 US77044701A US2001011696A1 US 20010011696 A1 US20010011696 A1 US 20010011696A1 US 77044701 A US77044701 A US 77044701A US 2001011696 A1 US2001011696 A1 US 2001011696A1
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- video display
- display stand
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000009977 dual effect Effects 0.000 claims abstract description 51
- 238000004091 panning Methods 0.000 claims abstract description 51
- 230000005484 gravity Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 description 7
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
- F16M11/08—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting around a vertical axis, e.g. panoramic heads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M2200/00—Details of stands or supports
- F16M2200/08—Foot or support base
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/14—Rotary member or shaft indexing, e.g., tool or work turret
- Y10T74/1482—Single revolution input effects desired fractional output
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Selective Calling Equipment (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
A video display stand having dual panning axes suitable for controlling a screen direction of appliances such as a TV set or a personal computer without bumping against a wall even in a state that it is positioned very closely to the wall, and its controlling method for automatically controlling screen directions by using a driving force, including two motors being installed having gear driving shafts at one side of either a rotational base or a rotation support member of the TV set; two movement guide toothed slots each being formed along a circular arc centering a mutually opposite gear driving shaft with a predetermined width and depth, at the opposite side corresponding to the position of each motor, and having a gear portion to be engaged with the gear driving shaft at one side of each wall; and a controller for controlling driving of the motors.
Description
- 1. Field of the Invention
- The present invention relates to a video display stand, and more particularly to a video display stand having dual panning axes which is suitable for controlling a screen direction of appliances such as a TV set or a personal computer without bumping against a wall even in a state that it is positioned very closely to the wall, and its controlling method for automatically controlling screen directions by using a driving force.
- 2. Description of the Conventional Art
- Generally, regarding a TV stand, for example, its screen direction is frequently desired to be changed according to viewing positions of a viewer.
- Accordingly, if the TV stand would not be rotatable, the viewer should move the TV set whole to change its screen direction to desired positions for viewing, causing much inconvenience.
- In an attempt to settle such inconvenience, a rotatable TV stand has been proposed.
- FIG. 1 is a perspective view of a conventional TV set. As shown in the drawing, the TV set
main body 1 is combined with arotational support 2 which rotatably supports the TV from the bottom, so that the TV set can be rotated on therotational support 2. - Such a general rotating apparatus has a single support, details of which will now be described with reference to FIGS. 2 and 3.
- FIG. 2 is a plan view of the rotational support rotatably supporting the conventional TV set having a single support, and FIG. 3 is a sectional view showing a rotating support structure of the conventional TV set having the single support.
- In the conventional TV set, as described above, a
circular groove 3 is formed at a central portion of therotational support 2. Acombination hole 4 is formed at the center of thegroove 3, and a circularrotation guide hole 5 having a constant radius centering thegroove 3 is formed. - Corresponding to the
rotational support 2, at a lower surface of the TV setmain body 1, arotational shaft 7 having a thread groove (not shown) is protrusively formed to be inserted into thegroove 3 of therotational support 2 and to be rotatably combined by being threaded with ascrew 6 from the lower portion of thecombination hole 4. Acircular slide rib 8 is protrusively formed having a predetermined radius from therotational shaft 7 and being inserted to therotation guide groove 5 of therotational support 2 so as to be slidably rotated centering therotational shaft 7. - The TV set having such construction is rotatable 360° centering the
rotational shaft 7, of which theslide rib 8 is slidably rotated along therotation guide groove 5 when the screen direction of the TV set is desired to be changed by the viewer. - In this respect, as shown in FIG. 4, in most cases, the TV set is positioned near the wall.
- Thus, when the TV set is rotated to change its screen direction, since the right and
left edges main body 1 touch the wall, its rotation range is much limited. - In addition, when the TV set is inadvertently turned while being laid near the wall, as shown in a dotted line of FIG. 4, the
edges rear portion 9 of the TV setmain body 1 are readily bumped against thewall 10, possibly causing a breakdown to the main body or a damage to its internal components due to the impact. - Meanwhile, in view of rotating the TV set in desired directions as well as preventing such a damage to the main body, the TV set needs to be enough distanced from wall, which, however, would occupy much space, resulting in a problem of efficiency in space utilization.
- Accordingly, an object of the present invention is to provide a video display stand having dual panning axes which can be suitably adopted for controlling screen directions of a TV set, or a personal computer as required to be changed at its own position, without bumping against a wall even when they are placed closely near the wall, and its controlling method for automatically controlling screen directions by using a driving force.
- To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided a video display stand having dual panning axes having a rotational base incorporatively or separatively formed at a lower surface of the video display stand and a rotation support member for supporting the rotational base, including: two motors being installed at a predetermined space, having a gear driving shaft at one side of either the rotational base or the rotation support member, each being driven to be rotated in a normal direction and in a reverse direction; two movement guide toothed slots each being formed along a circular arc centering a mutually opposite gear driving shaft with a predetermined width and depth at the opposite side corresponding to the position of each motor, and having a gear portion to be engaged with the gear driving shaft at one side of each wall; and a controller for controlling the driving of the motor.
- There is also provided a method for controlling screen directions of a TV set for which two motors are selectively driven in a normal direction (clockwise) and in a reverse direction in accordance with a key operation by a user so that the TV set can be rotated rightward or leftward centering the driving shaft of each motor, including the steps of: judging whether the key input by the user is right turn command or left turn command, and a current screen direction of the TV set; driving a motor positioned at the opposite side to the key input command, of the two motors, in the normal direction or in the reverse rotation direction until the key input is released in case that the current TV set is directed to the front side or is placed in the same direction as the judged turn command; rotating a motor positioned at the side corresponding to the key input command, of the two motors, in the normal direction or in the reverse direction until the key input is released, in case that the TV set is placed in a different direction to the judged turn command; and stopping the rotation of the motor positioned at the side corresponding to the key input and then rotating the other motor in the same rotation direction as that of the corresponding motor until the key input is released, in case that the key input has not released yet even when the current TV set is already directed to the front side.
- The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.
- In the drawings:
- FIG. 1 is a perspective view of a conventional Video display stand;
- FIG. 2 is a plan view of a rotational support supporting the conventional Video display stand;
- FIG. 3 is a sectional view showing a structure of the rotational support of the conventional Video display stand;
- FIG. 4 is a plan view showing a turning state when the conventional Video display stand is placed closely near a wall;
- FIG. 5 is a perspective of a Video display stand with a rotation support member as separated having dual panning axes in accordance with one embodiment of the present invention;
- FIG. 6 is a bottom view of the Video display stand main body having dual panning axes in accordance with one embodiment of the present invention;
- FIG. 7 is a plan view of the rotation support member of the Video display stand having dual panning axes in accordance with one embodiment of the present invention;
- FIG. 8 is a sectional view showing a turning support structure of the Video display stand having dual panning axes in accordance with one embodiment of the present invention;
- FIG. 9a is a plan view showing a state that the Video display stand having dual panning axes placed near the wall is turned centering a shaft of one side in accordance with one embodiment of the present invention
- FIG. 9b is a plan view showing a state that the Video display stand having dual panning axes placed near the wall is turned centering a shaft of the other side in accordance with one embodiment of the present invention;
- FIG. 10 is a view showing a combined state of the Video display stand having dual panning axes in accordance with a modification of one embodiment of the present invention;
- FIG. 11 is a perspective view of the Video display stand and the rotation support member as separated having the dual panning axes by using a driving force in accordance with another embodiment of the present invention;
- FIG. 12 is a partial sectional view showing a combined state of the Video display stand having dual panning axes in accordance with another embodiment of the present invention;
- FIG. 13a is a plan view of major portion showing a state that a gear driving shaft at one side is touched by a position detecting micro-switch of the Video display stand having dual panning axes in accordance with another embodiment of the present invention;
- FIG. 13b is a plan view of major portion showing a state that the gear driving shaft at one side is separated from the position detection micro-switch of the Video display stand having dual panning axes in accordance with another embodiment of the present invention;
- FIG. 14a is a view showing that the Video display stand having dual panning axes is directed to the front side in accordance with another embodiment of the present invention;
- FIG. 14b is a view showing a state that the Video display stand having dual panning axes is turned to the left side in accordance with the another embodiment of the present invention;
- FIG. 14c is a view showing a state that the Video display stand having dual panning axes is turned to the right side in accordance with the another embodiment of the present invention;
- FIG. 15 is a schematic block diagram of a control circuit controlling the screen direction of the Video display stand having dual panning axes in accordance with another embodiment of the present invention;
- FIG. 16 is a flow chart of operations of the Video display stand having dual panning axes under the control of the control circuit in accordance with another embodiment of the present invention;
- FIG. 17 is a flow chart of a left turn mode in the operations of the Video display stand having dual panning axes in accordance with another embodiment of the present invention;
- FIG. 18 is a flow chart of a right turn mode in the operations of the Video display stand having dual panning axes under the control of the control circuit in accordance with another embodiment of the present invention; and
- FIG. 19 is a flow chart of a normal position mode in the operations of the Video display stand under the control of the control circuit in accordance with another embodiment of the present invention.
- Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.
- FIG. 5 is a perspective of a Video display stand with a rotation support member as separated having dual panning axes in accordance with one embodiment of the present invention; FIG. 6 is a bottom view of the Video display stand main body having dual panning axes in accordance with one embodiment of the present invention; FIG. 7 is a plan view of the rotation support member of the Video display stand having dual panning axes in accordance with one embodiment of the present invention; and FIG. 8 is a sectional view showing a turning support structure of the Video display stand having dual panning axes in accordance with one embodiment of the present invention.
- As shown in the drawings, in a video display stand having the dual panning axes in accordance with one embodiment of the present invention, two
rotational shafts main body 100. In this respect, the tworotational shafts straight line 130 passing the center ofgravity 120 of the TV setmain body 100, so that the distance therebetween is the same as the width D of arear portion 140 of the TV setmain body 100 or can be wider. - On a
rotation support member 200 supporting the TV setmain body 110, two arcuate movementguide toothed slots rotational shafts opening portions screw 90 is engaged with the tworotational shafts rotational shafts slots - As shown in FIG. 7, the movement guide toothed
slots circles rotational shafts - The operation of right-turning and left-turning of the Video display stand having dual panning axes in accordance with one embodiment of the present invention constructed as described above will now be explained.
- The two
rotational shafts main body 100 can be rotated centering the mutually opposite rotational shaft only when they are positioned inrear end portion slots rotation support member 200. - When the two
rotational shafts rear end portions guide toothed slot - In a state that the TV set main body is directed to the front side, as shown in FIG. 9a, when the right side
rotational shaft 110′ is moved centering the left siderotational shaft 110 along the right side movementguide toothed slot 210′, the screen of the TV set is turned leftward, conversely, as shown in FIG. 9b, when the left siderotational shaft 110 is moved centering the right siderotational shaft 110′ along the left side movementguide toothed slot 210, the screen of the TV set is turned rightward. - In this respect, the maximum turning radius of the right and left edge portions of the
rear end portion 140 of the TV set corresponding to the tworotational shafts wall 800, and the tworotational shafts rear end portions slots rear portion 140 of the TV setmain body 110 would bump against thewall 800. - FIG. 10 is a view showing a combined state of Video display stand having dual panning axes in accordance with a modification of one embodiment of the present invention, where the
rotational shafts slots - In detail, the two
rotational shafts rotation support member 200, while movement guidetoothed slots main body 100 so as to receive the tworotational shafts rotational shafts slots main body 100 in a state that the TV setmain body 100 is directed to the front side. - The operations of the Video display stand having dual panning axes according to the modification of one embodiment of the present invention to turn the TV set rightward or leftward are the same as the operations of the above-described embodiment, thus, descriptions of which are omitted.
- Meanwhile, as is known, the TV set is mostly controlled by a remote-controller for viewers' convenience.
- Accordingly, the video display stand having dual panning axes for automatically rotating two shafts by using the driving force and its controlling method in accordance with another embodiment will now be described with reference to the accompanying drawings.
- FIG. 11 is a perspective view of the Video display stand and the rotation support member as separated having the dual panning axes by using the driving force in accordance with another embodiment of the present invention.
-
Reference 300 denotes a TV set main body,reference 400 denotes a rotational base incorporatively formed or separatively combined with the bottom surface of the TV setmain body 300, andreference numeral 500 is a rotation support member for supporting therotational base 400. - The video display stand having dual panning axes in accordance with another embodiment includes arcuate movement guide
toothed slots gear portions protrusions slots circular combination protuberance 440 having athread groove 441 formed between the two movement guide toothedslots - The
rotation support member 500 corresponding to the rotational base includesmotor installing grooves motors combination groove 530 formed at a central portion of the same line taken for the twomotor installing grooves combination protuberance 440 of therotational base 400 with a predetermined margin forward and backward; and acombination hole 540 formed within thecombination groove 530 in a lengthy direction. - For the
motors driving shafts gear portions toothed slots rotational base 400. Flange-shapedsupports shafts washers 91 made of a material having a low friction force are mounted. The reason for this is to reduce a friction resistance in turning or moving by minimizing the contact area between theprotrusions rotational base 400. - The
rotational base 400 and therotation support member 500 are combined in a manner that acombination screw 90 is threaded with thecombination protuberance 440 of the rotational base through acombination hole 540 at a state that thewasher 92 is inserted from the lower portion of therotation support member 500. In this combination, thecombination protuberance 440 of therotational base 400 is a bit movable forward and backward for the predetermined margin within thecombination groove 530. - In this respect, the construction elements formed at the
rotational base 400 and therotation support member 500 may be changed to be formed on the mutually opposite side, for which thecombination protuberance 440, thecombination groove 530 and thecombination hole 540 may not be formed. - The video display stand having dual panning axes and a position detection micro-switches in accordance with another embodiment of the present invention, and a method for judging screen direction thereof will now be described with reference to FIGS. 12, 13a and 13 b.
- FIG. 12 is a partial sectional view showing a combined state of the Video display stand having dual panning axes in accordance with another embodiment of the present invention; FIG. 13a is a plan view of major portion showing a state that a gear driving shaft at one side is touched by a position detecting micro-switch of the Video display stand having dual panning axes in accordance with another embodiment of the present invention; and FIG. 13b is a plan view of major portion showing a state that the gear driving shaft at one side is separated from the position detection micro-switch of the Video display stand having dual panning axes in accordance with another embodiment of the present invention.
- As shown in FIG. 12, end portions of the
gear driving shafts rotational base 400, and as shown in FIGS. 13a and 13 b, amicro-switch contact plates gear driving shafts rotational base 400, that is, the front end portion of the movement guide toothedslots contact plate slots gear driving shafts motors - By combining the signals informing whether the
micro-switches slots main body 300 can be judged as being classified to front, right and left sides. - The screen direction of the TV set
main body 300 to the front, right or left side will now be described with reference to FIGS. 14a, 14 b and 14 c. - FIG. 14a is a view showing that the video display stand having dual panning axes is directed to the front side in accordance with another embodiment of the present invention; FIG. 14b is a view showing a state that the Video display stand having dual panning axes is turned to the left side in accordance with the another embodiment of the present invention; and FIG. 14c is a view showing a state that the Video display stand having dual panning axes is turned to the right side in accordance with the another embodiment of the present invention.
- First, as shown in FIG. 14a, in case that the TV set
main body 300 is directed to the front side, the twogear driving shafts slots contact plate micro-switches combination protuberance 440 of therotational base 400 is positioned at the front end portion of the movement guide toothedslots 530. - Meanwhile, as shown in FIGS. 14b and 14 c, in case that the TV set
main body 300 is directed to the right side or to the left side, the drivingshafts contact plate 610 or thecontact plate 610′ of themicro-switches combination protuberance 440 of therotational base 400 is positioned at the rear end portion of the movementguide toothed slot 530. - Accordingly, on the basis of the signals according to the touching state between the driving
shafts micro-switches - The operation of driving the motor for the desired direction from the current direction of the TV will now be explained in detail.
- First of all, in the following description on the rotation of the driving shafts, the driving of the motor driving shaft clockwise is defined as a normal direction while the driving the motor driving shaft counterclockwise is defined as a reverse direction.
- In a state that the screen of the TV set is directed to the front side as shown in FIG. 14a, the screen direction can be turned leftward by driving the
right side motor 520 in the normal direction centering thegear driving shaft 521 as shown in FIG. 14b, and conversely, the screen direction can be turned rightward by driving theleft side motor 520 in the reverse direction centering thegear driving shaft 521′ as shown in FIG. 14c. - Meanwhile, as shown in FIG. 14b, when the TV set is desired to be turned rightward from a state that it is directed to the left side, the
right side motor 520′ is first driven in the reverse direction centering the leftside driving shaft 521, and as the drivingshaft 521′ is touched by thecontact plate 610′ of theright side micro-switch 600′, its driving is stopped, and theleft side motor 520 is driven in the reverse direction centering the rightside driving shaft 521′, by which the screen direction is turned in the rightward direction. - Reversely, as shown in FIG. 14c, when the screen of the TV set is desired to turn leftward from a state that it is directed to the right side, the
left side motor 520 is first driven in the normal direction centering the rightside driving shaft 521′, and as the drivingshaft 521 is touched by thecontact plate 610 of theleft side micro-switch 600, its driving is stopped, and then theright side motor 520′ is driven in the normal direction centering the leftside driving shaft 521, by which the screen direction is turned to the leftward direction. - With respect to the FIGS. 14a to 14 c,
reference numeral 800 denotes a wall inside a room. Even in case that the TV setmain body 300 is positioned very near thewall 800, when the TV setmain body 300 is turned centering one of either shaft, the maximum turning radius of the right and left edge portions at the rear side of the TV set corresponding to the tworotational shafts combination protuberance 440 of therotational base 400 is moved a bit forward within the movementguide toothed slot 530, so that there is no possibility for the rear portion of themain body 300 to be bumped against thewall 800. - The construction of the control circuit for automatically controlling the screen directions of the TV set by operating the driving motor will now be described with reference to FIG. 15.
- FIG. 15 is a schematic block diagram of the control circuit for controlling the screen direction of Video display stand having dual panning axes in accordance with another embodiment of the present invention. As shown in the drawing, the control circuit includes a
controller 700 controlling each part; akey input unit 710 operated by a user; a remote control transmitting unit 729 and a remotecontrol receiving unit 730 as substitutive wireless input units; a right side and leftside detection units 740′ and 740 each for detecting turning direction of the TV set by using themicro-switches motor driving units 750′ and 750 for driving themotors - The
controller 700 includes a microcomputer. - That is, under the control of the microcomputer performing a predetermined program control function, the operation command inputted through the
key input unit 710 by the user is detected by the right side and the leftside detection units 740′ and 740, and based on the current screen direction as detected, the right side and the leftside driving motors 750′ and 750 are selectively driven, details of which will be described later. - The
key input unit 710 includes a switch button key for turn command newly added in the present invention as well as a button key such as a power switch normally provided at the TV set. The remotecontrol transmitting unit 720 refers to the usual remote-controller including a switch button key for turn command. - The operation of automatically controlling the screen direction of the video display stand having dual panning by using the driving force in accordance with another embodiment of the present invention constructed as described above will now be explained with reference to FIGS. 16 through 19.
- FIG. 16 is a flow chart of operations of the Video display stand having dual panning axes under the control of the control circuit in accordance with another embodiment of the present invention; FIG. 17 is a flow chart of a left turn mode in the operations of the Video display stand having dual panning axes in accordance with another embodiment of the present invention; FIG. 18 is a flow chart of a right turn mode in the operations of the Video display stand having dual panning axes under the control of the control circuit in accordance with another embodiment of the present invention; and FIG. 19 is a flow chart of a normal position mode in the operations of the Video display stand under the control of the control circuit in accordance with another embodiment of the present invention.
- First, as shown in FIG. 16, when the TV is switched on, the
controller 700 of FIG. 15 judges whether there is a key input by a user directly from thekey input unit 710 or from the remotecontrol transmitting unit 720 wirelessly in the step S1. - When there is a key input by the user, the
controller 700 sequentially judges whether the input command is a right turn command or left turn command, or power disconnection (power-OFF) command in the steps S2-S4 to perform left turn mode in the step S10 or right turn mode in the step S20 according to the judged command if the command relates to the screen direction turning mode in each step, while performing a normal position mode in the step S30 to switch off the TV set for ending if the command relates to a power disconnection command, or performing a normal TV control mode if the command is neither the turning mode nor the power disconnection command. - Detailed descriptions for each mode are as follows.
- In case that the left turn mode in the step S10 is selected according to the user's key input:
- As shown in FIG. 17, first, it is judged whether the
left side micro-switch 600 is touched ON by means of the leftside detection unit 740 in the step S11. - When the
left side micro-switch 600 is touched ON, which signifies that the TV setmain body 300 is directed to the front side as shown in FIG. 14a, or is directed to the left side as shown in FIG. 14b, thus, theright side motor 520′ is driven in the normal direction in the step S12 to turn the TV setmain body 300 in the leftward direction. - Subsequently, after the
right side motor 520′ started to be driven in the normal direction, it is judged whether the key input is released in the step S13, and if the key input is not released, the driving is kept on, while if the key input is released, the driving is stopped in the step S14 and returns to the step S1. - Meanwhile, when the
left side micro-switch 600 is not touched ON, which signifies that the TV set is directed to the right side as shown in FIG. 14c. Thus, in this case, theleft side motor 520 is driven in the normal direction in the step S15, and it is judged whether the key input is released in the step S16. If the key input is released, the driving of theleft side motor 520 in the normal direction is stopped in the step S17. Meanwhile, if the key input is not released, it is judged whether theleft side micro-switch 600 is touched ON again in the step S18, and if it is not touched ON, the above steps are repeatedly performed while theleft side motor 520 is kept driving in the normal direction, and if theleft side micro-switch 600 is touched ON, the driving ofleft side motor 520 is simultaneously stopped and theright side motor 520′ is driven in the normal direction so as to go to the step Sl3. - In case that the right turn mode in the step S20 is selected according to the user's key input:
- As shown in FIG. 18, first, it is judged whether the
right side micro-switch 600′ is touched ON by means of the rightside detection unit 740′ in the step S21. - When the right side
micro switch 600 is touched ON, which signifies either that the TV setmain body 300 is directed to the front side as shown in FIG. 14a, or that the TV setmain body 300 is directed to the right side as shown in FIG. 14c. Thus, theleft side motor 520 is driven in the reverse direction in the step S22 to turn TV setmain body 300 in the rightward direction. - After the
left side motor 520 is driven to be rotated in the reverse direction, it is judged whether the key input by the user is released in the step S23, and if the key input is not released, the driving is kept on, while, if the key input is released, the driving is stopped in the step S24 to return to the step S1. - Meanwhile, when the
right side micro-switch 600′ is not touched ON, which signifies that the TV set is directed to the left side as shown in FIG. 14b. Thus, in this case, theright side motor 520′ is driven in the reverse direction in the step S25, and it is judged whether the key input is released in the step S26. If the key input is released, the driving of theright side motor 520′ in the reverse direction is stopped in the step S27. Meanwhile, if the key input is not released, it is judged whether theright side micro-switch 600′ is touched ON again in the step S28, and if it is not touched ON, the above steps are repeatedly performed while theright side motor 520′ is kept driving in the reverse direction, and if theright side micro-switch 600′ is touched ON, the driving ofright side motor 520′ is simultaneously stopped and theleft side motor 520 is driven in the reverse direction so as to go to the step S23. - In case that the normal position mode S30 is selected according to the key input by the user:
- As shown in FIG. 19, first, it is judged whether the
left side micro-switch 600 is touched OFF in the step S31. - As shown in FIG. 14c, if the
left side micro-switch 600 is touched OFF, theleft side motor 520 is driven in the normal direction in the step S23 to judge whether theleft side micro-switch 600 is touched ON in the step S33, and if it is touched ON, the driving ofleft side motor 520 is stopped. - Meanwhile, if the
left side micro-switch 600 is not touched OFF, it is judged whether theright side micro-switch 600′ is touched OFF in the step S35. As shown in FIG. 14b, if theright side micro-switch 600′ is touched OFF, theright side motor 520′ is driven in the reverse direction in the step S36 to judge whether theright side micro-switch 600′ is touched ON, and if it is touched ON, the driving of theright side motor 520′ is stopped in the step S38. - Of course, in case that both the right side and left
side micro-switches 600′ and 600 are not touched OFF, as shown in FIG. 14a, which signifies that the screen direction of the TV set is directed to the front side, thus, the normal position mode is ended. - The normal position mode S30 is always performed even in the power disconnection (power-OFF) command, for which an additional key may be provided to the
key input unit 710 or at the remotecontrol transmitting unit 730, so that the normal position mode can be performed by the key operation conveniently. - In addition, in the video display stand having dual panning axes according to another embodiment of the present invention, since a free-wheel of the motor is possible, the motor can be manually controlled directly.
- As so far described, the video display stand having dual panning axes of the present invention is suitably applied to appliances such as a TV set or a personal computer, of which directions are desired to be changed at its own position, by which they can be turned without bumping against the wall even in case that they are placed very near the wall, having an effect of increasing the space utilization.
- In addition, with the video display stand having dual panning axes of the present invention, the screen direction can be both automatically and manually controlled by using the driving force, having an effect of increasing the users' convenience.
- It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention cover such modifications and variations provided they come within the scope of the appended claims and their equivalents.
Claims (23)
1. A video display stand having dual panning axes including a rotation support member for supporting the TV set, comprising:
two rotational shafts formed with a predetermined space at one side of either a lower surface of the TV set or the rotation support member; and
movement guide toothed slots formed at the mutually opposite side of the two rotational shafts to receive the rotational shafts, each movement guide toothed slot being formed along a circular arc taken centering the relatively other rotational shaft.
2. The video display stand according to , wherein the two rotational shafts are formed to be symmetrical on a straight line passing a center of gravity of the TV set.
claim 1
3. The video display stand according to , wherein the movement guide toothed slots are formed with a predetermined length along an arc segment in a forward direction of the circular arc from each rotational shaft taking a space between the two rotational shafts as radius.
claim 1
4. The video display stand according to , wherein the two rotational shafts formed with thread grooves are threaded through opening portions formed along the movement guide toothed slots by a screw so as to be fixed.
claim 1
5. The video display stand according to , wherein in case that the rotational shafts are formed at the lower surface of the TV set and the movement guide toothed slots are formed at the rotation support member, the rotational shafts are positioned at a rear end portion of the movement guide toothed slots in a state that the TV set is directed to the front side.
claim 1
6. The video display stand according to , wherein in case that the movement guide toothed slots are formed at the lower surface of the TV set and the rotational shafts are formed at the rotation support member, the rotational shafts are positioned at a front end portion of the movement guide toothed slots in a state that the TV set is directed to the front side.
claim 1
7. A video display stand having dual panning axes including a rotational base incorporatively or separatively formed at a lower surface thereof and a rotation support member for movably supporting the rotational base, comprising:
two motors being installed with a predetermined space, having two gear driving shafts at one side of either the rotational base or the rotation support member, each being driven to be rotated in a normal direction and in a reverse direction;
two movement guide toothed slots each being formed along an arc segment of a circular arc centering a mutually opposite gear driving shaft with a predetermined width and depth, at the opposite side corresponding to the position of each motor, and having a gear portion to be engaged with the gear driving shaft at one side of each wall; and
a controller means for controlling driving of the motor.
8. The video display stand according to , wherein the driving shafts of the motor are positioned at a front end portion of the movement guide toothed slots when they are engaged with the gear portions of the movement guide toothed slots in a state that the TV set is directed to the front side.
claim 7
9. The video display stand according to , wherein a combination groove with a predetermined size in a lengthy direction is formed on the same line where the two motor are installed, a combination hole is formed along the combination groove, a combination protuberance having a thread groove to be received to the combination groove with a predetermined margin forward and backward direction is formed at the central portion where the movement guide toothed slots are formed, all of which are threaded through the combination hole.
claim 7
10. The video display stand according to , wherein the combination protuberance is formed at a position corresponding to the center of gravity of the TV set.
claim 9
11. The video display stand according to , wherein the motors are formed to be symmetrical with a predetermined space on a straight line passing the center of gravity of the TV set.
claim 7
12. The video display stand according to , wherein the movement guide toothed slots are formed with a predetermined length along a circular arc formed backward from each driving shafts taking the space between the two driving shafts of the motors as radius.
claim 7
13. The video display stand according to , wherein switches are respectively installed at a front end portion of the movement guide toothed slots so that a screen direction of the TV set can be judged according to the state whether or not the switches are touched by motors relying on the rotation of the movement guide toothed slots.
claim 7
14. The video display stand according to , wherein when the switches are touched by both of the two of the motors, the TV set is directed to the front side, while the switches are touched by only one of the motors, the TV set is directed to the left side or right side.
claim 13
15. The video display stand according to , wherein the controller means includes:
claim 7
a key input unit operated by a user;
detecting means for detecting the directions of the front, right and left side of the TV set and detecting a signal for informing each direction;
motor driving means for respectively driving the motors; and
a controlling means for controlling each part to enable the motor driving means to selectively drive the motor upon receiving the data of input signal from the key input unit and the signal from the detecting means.
16. A method for controlling screen direction of the video display stand having dual panning axes for which two motors are selectively driven in a normal direction (clockwise) and in a reverse direction according to a key operation by a user so that a TV set can be turned in the rightward direction or in the leftward direction centering driving shafts of each motor, comprising the steps of:
judging whether the key input by the user is a left turn command or right turn command, and the current screen direction of the TV set;
driving a motor positioned at the opposite side to the key input command, of the two motors, in the normal direction or in the reverse rotation direction until the key input is released, in case that the current TV set is directed to the front side or is placed in the same direction as the judged turn command; and
rotating a motor positioned at the side corresponding to the key input command, of the two motors, in the normal direction or in the reverse direction until the key input is released, in case that the TV set is placed in a different direction to the judged turn command.
17. The method according to , further includes a step for stopping the rotation of the motor positioned at the side corresponding to the key input and then rotating the other motor in the same rotation direction as that of the corresponding motor until the key input is released, in case that the key input has not released yet even when the current TV set is already directed to the front side.
claim 16
18. The method according to , wherein in the step of judging whether the key input is right turn command or left turn command, and the screen direction of the TV set,
claim 16
in case that the key input is a left turn command, when the TV set is directed to the same side as the judged command or to the front side, the right side motor is driven in the normal direction until the left turn command is released, while when the TV set is directed to the different side to the judged turn command, the left side motor is driven in the normal direction until the left turn command is released;
in case that the key input is a right turn command, when the TV set is directed to the same side as the judged command or to the front side, the left side motor is driven in the reverse direction until the right turn command is released, while when the TV set is directed to the different side to the judged turn command, the right side motor is driven in the reverse direction until the right turn command is released.
19. The method according to , wherein when the TV set is directed to the different side to the judged turn command, in case that the left turn command or right turn command is being kept even when the TV set is already turned to be directed to the front side after either the left side motor was driven in the normal direction or the right side motor was driven in the reverse direction, the driving of the motor corresponding to the command is stopped and then the other motor is driven in the same direction as that of the corresponding motor until the turning command is released.
claim 18
20. The method according to , further includes a step for judging whether the key input is a power disconnection command besides the turn commands, according to which when it is the power disconnection command and the TV set is directed to the left side or to the right side, a normal position mode is performed to enable the two motors to be selectively driven so as to turn the TV set to be directed to the front side, and then the power is turned off.
claim 16
21. The method according to , wherein the normal position mode is performed in that when the TV set is directed to the left side, the right side motor is driven in the reverse direction, while the TV set is directed to the right side, the left side motor is driven in the normal direction.
claim 20
22. The method according to , wherein two switches are provided in the step for judging the current screen direction of the TV set by combining touch signals of the two switches in a manner that the switches are touched with both the two motors when the TV set is directed to the front side, while being touched by only one motor of them when the TV set is directed to the right or left side.
claim 16
23. The method according to , wherein the switches are touched only by the left side motor when the TV set is directed to the left side, while they are touched only to the right side motor when the TV set is directed to the right side.
claim 22
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/770,447 US6354550B2 (en) | 1998-12-08 | 2001-01-29 | Method for controlling screen direction of a video display stand |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR53753-1998 | 1998-12-08 | ||
KR1019980053753A KR100279633B1 (en) | 1998-12-08 | 1998-12-08 | 2-axis power rotating device and its control method |
KR98-53753 | 1998-12-08 | ||
US09/397,138 US6334599B1 (en) | 1998-12-08 | 1999-09-16 | Video display stand having dual panning axes |
US09/770,447 US6354550B2 (en) | 1998-12-08 | 2001-01-29 | Method for controlling screen direction of a video display stand |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US09/397,138 Division US6334599B1 (en) | 1998-12-08 | 1999-09-16 | Video display stand having dual panning axes |
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US09/770,447 Expired - Fee Related US6354550B2 (en) | 1998-12-08 | 2001-01-29 | Method for controlling screen direction of a video display stand |
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US09/397,138 Expired - Fee Related US6334599B1 (en) | 1998-12-08 | 1999-09-16 | Video display stand having dual panning axes |
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US (2) | US6334599B1 (en) |
JP (1) | JP3391744B2 (en) |
KR (1) | KR100279633B1 (en) |
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BR9904080A (en) | 2000-09-05 |
US6354550B2 (en) | 2002-03-12 |
KR20000038677A (en) | 2000-07-05 |
CN1256587A (en) | 2000-06-14 |
JP2000184314A (en) | 2000-06-30 |
CN1141839C (en) | 2004-03-10 |
KR100279633B1 (en) | 2001-02-01 |
US6334599B1 (en) | 2002-01-01 |
JP3391744B2 (en) | 2003-03-31 |
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