Abstract: Systems and methods for preventing sight deterioration caused by near work with devices with electronic screens arc provided. A system can include, in addition to an electronic screen, a distance detector directed towards a user. A system can also include processing circuitry coupled to a distance detector. Processing circuitry determines the distance between a user's head and a screen, relative to a calibration distance, and in case it is shorter than the calibration distance (putting the user at risk of future sight deterioration and progression of myopia), it can send a control signal to circuitry operative to notify the user. If processing circuitry determines that said distance is equal or longer than the calibration distance, the circuitry operative can slop the notification. A notification can be modulated by stud relative distance, making a user instinctively move a device away.

Abstract: A case, for an electronic device such as a mobile phone, containing an insert located near a camera, still image recorder, or video recorder and a flash of the device is disclosed. The placement, material, color, and properties of the insert helps reduce and/or eliminate problems associated with the case affecting the resultant flash/light from the camera causing and adding erroneous colors, effects, and information on the resulting pictures, images, sensors, or videos.

Abstract: An electronic gaming machine includes a housing and a display frame which is connected to the housing, the display frame having a display opening. An electronic video display is mounted to the housing and is located in the display opening of the display frame, the electronic video display having a front screen having a peripheral edge which extends around a display area, a peripheral border extending over the front screen between the peripheral edge thereof and the display area, and an insulating strip positioned between the electronic video display and the display frame at the peripheral edge of the front screen.

Abstract: Provided is an electromagnetic shielding material having improved electromagnetic shielding properties, light weight properties and formability. The present invention relates to an electromagnetic shielding material having a structure in which at least three metal foils are laminated via insulating layers, wherein all of combinations of the metal foils and the insulating layers making up the electromagnetic shielding material satisfy the equation: ?M×dM×dR?3×10?3, in which: the symbol ?M represents conductivity of each metal foil at 20° C. (S/m); the symbol dM represents the thickness of each metal foil (m); and the symbol dR represents the thickness of each insulating layer (m).

Abstract: A system is disclosed for controlling operation of an electronic device, such as a TV. The system includes a first sensor located at or near the electronic device and a second sensor spaced apart from the first sensor, wherein the first and second sensors are configured to detect motion of a user within an operating zone associated with the electronic device. A processor is coupled to the electronic device and the first and second sensors, the processor being configured to input a signal from the first and second sensors. Memory is coupled to the processor, the memory comprising a sensing algorithm configured to process the input signal from the first and second sensors and determine the location of the user with respect to the operating zone. The processor is configured to send a control command to the electronic device based on an output of the sensing algorithm.

Abstract: A system is disclosed for controlling operation of an electronic device, such as a TV. The system includes a first sensor located at or near the electronic device and a second sensor spaced apart from the first sensor, wherein the first and second sensors are configured to detect motion of a user within an operating zone associated with the electronic device. A processor is coupled to the electronic device and the first and second sensors, the processor being configured to input a signal from the first and second sensors. Memory is coupled to the processor, the memory comprising a sensing algorithm configured to process the input signal from the first and second sensors and determine the location of the user with respect to the operating zone. The processor is configured to send a control command to the electronic device based on an output of the sensing algorithm.

Abstract: In a television viewing safety system and method, a detection zone of a sensor is set. The sensor is turned on to detect whether a person moves into the detection zone. If the person is detected moving into the detection zone, the television is controlled to display under a safe display mode. If the person is not detected moving into the detection zone, the television is controlled to display under a normal display mode.

Abstract: A method of determining the distribution of radioactive material within a region is described. A plurality of radiological measurements and associated geometrical measurements taken at a plurality of positions in said region are input to a computer system. A 3D model of structures within said region is defined and the position within the model of each radiation measurement is obtained by using the geometrical measurements. The radiological measurements are then ascribed to a distribution of sources restricted to defined locations in the 3D model. The source distribution is parameterized over the defined source locations, and each parameter is related to the calculated observable radiation field, calculated using a physical model, at each measurement position. The parameters are adjusted to optimize the correspondence between the actual radiological measurements and the calculated observable radiation field, to yield the distribution of radioactive material as defined by the adjusted parameters.

Abstract: An electromagnetic interference (EMI) prevention apparatus for a flat panel display which is capable of modulating the frequency of an input clock signal using a spread spectrum clocking method to increase the frequency of the clock signal and reduce the amplitude thereof so as to reduce EMI by a clock signal generated from a format converter of the flat panel display. The amount of electromagnetic energy radiated from a signal source of the flat panel display can be reduced to eradicate the root of an EMI problem, thus excluding the use of a conventional shielding plate device.

Abstract: A filter for a display device is provided which includes a base substrate, an electromagnetic shielding layer formed on one surface of the base substrate to block electromagnetic waves, and an electrode formed along at least two sides among four sides of the base substrate to earth the electromagnetic shielding layer, thereby reducing the manufacturing costs while maintaining the capability of blocking electromagnetic waves.

Abstract: An image display device for displaying an image by a light beam modulated according to an image signal includes: a light source unit that supplies the light beam; a scanning unit for performing scanning with the light beam from the light source unit; a screen that transmits the light beam from the scanning unit; a light detection unit that detects light incoming from the screen via the scanning unit; and a light beam emission stop unit that stops emission of the light beam from the image display device according to an output from the light detection unit.

Abstract: An electronic device having a bezel structure includes a case, an installation element, part of which is installed to the case, a conductive bezel having a loop shape to fixedly couple the installation element to the case, and an electronic unit provided in the case. The conductive bezel includes a support portion to directly support a circumference of the installation element, and a separation portion formed at one or more positions of the support portion to separate the support portion by a predetermined interval to restrict formation of an electrical loop.

Abstract: A child is encouraged not to sit close to the screen of television receiver. A base unit on the television receiver has a proximity detector that senses whether the child is within a preset range forward of the television receiver. In response to a range violation, the base unit transmits a triggering signal on an RF carrier to a slave unit. In response to the triggering signal, the slave unit transmits an OFF command on an infrared carrier to a standard infrared sensor built into the television receiver. The command is identical to the OFF command transmitted by a remote control associated with the television receiver. Since the base and slave units communicate via an omnidirectional RF carrier, the slave unit can be freely positioned to ensure adequate line of sight transmission communication with the television receiver via the infrared carrier.

Abstract: An electromagnetic interference (EMI) prevention apparatus for a flat panel display which is capable of modulating the frequency of an input clock signal using a spread spectrum clocking method to increase the frequency of the clock signal and reduce the amplitude thereof so as to reduce EMI by a clock signal generated from a format converter of the flat panel display. The amount of electromagnetic energy radiated from a signal source of the flat panel display can be reduced to eradicate the root of an EMI problem, thus excluding the use of a conventional shielding plate or device.

Abstract: A near infrared screening film which consists of a biaxially oriented film made from a polyester containing a near infrared light absorber having a weight reduction start temperature of at least 280° C. and which has a haze value of 5% or less and a total transmittance for visible lights having a wavelength of 400 to 650 nm of 40% or more and which is exemplified by having optical properties at visible and near infrared ranges which satisfy the following expressions (1) to (4): 1<T(850)<20??(1) 1<T(950)<20??(2) ?10<T(620)?T(540)<10??(3) ?10<T(450)?T(540)<10??(4) wherein T(450), T(540), T(620), T(850) and T(950) are light transmittances at wavelengths of 450 nm, 540 nm, 620 nm, 850 nm and 950 nm, respectively.

Abstract: Disclosed are a computer system and an image processing method, that can easily reduce the EMI (electromagnetic interference), introduced into a liquid crystal display using the spread spectrum. The computer system includes a graphic processing unit for converting the image signal provided from at least either of a central processing unit and a memory into a signal that can be displayed on a screen, and a spread spectrum unit, provided between the graphic processing unit and the liquid crystal display, for modulating a frequency of a clock signal from a clock generator within a predetermined frequency range.

Abstract: An electromagnetic wave shield film (1) comprises a transparent base (2), a conductor (4) positioned on the transparent base (2) via an adhesive (3) and having a mesh geometric pattern, and an earth portion (5) arranged around the conductor (4) and including conductive regions (501) which absorb electromagnetic waves, and non-conductive regions (510) which prevent the earth portion (5) from being creased.

Abstract: A flat display panel comprising a flat display panel main body, and a front protective plate which comprises an antireflection layer, a translucent electrically conductive layer, containing a metal having an electromagnetic wave shielding property and a near infrared ray shielding property, a highly rigid transparent substrate made of a tempered glass or a semi-tempered glass and an adhesive layer laminated in this order, bonded to the viewer's side surface of the flat display panel main body by means of the adhesive layer.

Abstract: There is provided an image display device including a panel of good work efficiency which can prevent the destruction of its conductive coat due to discharge and can highly efficiently reduce the leakage of unwanted radiation electric fields. The image display device includes a panel grounding electrode which connects a conductive coat and a grounding member together, and the panel grounding electrode uses a conductive adhesive material having in the whole of an adhesive layer, and an insulative protective tape.

Abstract: An electromagnetic shielding plate having a glass substrate and a geometric pattern formed on the substrate, in which the geometric pattern contains (a) an inorganic filler selected from the group consisting of metals and metal oxides, and (b) a glass component having a softening point of about 200 to 700° C.

Abstract: A monitor front case with gate landings is disclosed. Each of the gate landings is formed on the CRT seating surface of the front case at a position around each gate flash remaining on the case due to a gate of an injection mold. Each gate landing is depressed due to a gate of an injection mold. Each gate landing is depressed to a depth suitable for fully recessing the gate flash and avoids an interference between the gate flash and a CRT. The gate landings remove a gate flash grinding process from the injection molding process of the case and allow the CRT to be brought into close contact with the CRT seating surface without forming any gap in the junction between the CRT and the CRT seating surface, thus improving both the appearance of a monitor and work efficiency while assembling the CRT with the case.

Abstract: This invention provides a method of forming an electrode section on the inner surface of the transparent, electromagnetic wave shielding plate, composed of a transparent substrate coated with an electroconductive member and transparent film in this order. These are laminated into a monolithic structure via a heat-bond film. (a) The components of the transparent, electromagnetic wave shielding plate are laminated by hot pressing into the monolithic structure, after replacing the perimeter or part of the heat-bond film corresponding to the electrode section by a frame member almost as thick as the heat-bond film. (b) The frame member and part of the outer transparent film are removed. Both of these correspond to the electrode section, or only the outer transparent film for the part corresponds to the electrode section. (c) The electroconductive section of the electroconductive member is exposed to the surface layer section by the above steps (a) and (b).

Abstract: The invention relates to a software method for reducing the electromagnetic irradiation of the Phase Lock Loop (PLL) within an On-Screen Display Menu system. The method includes the steps as follows: setting the resolution of an OSD system to a predetermined pass value of Electromagnetic Interference (EMI); checking the OSD system; changing the resolution of the OSD system to a value to be displayed if the OSD system is started; keeping on the predetermined value of EMI if the OSD system is not started; repeating the checking of the OSD system step.

Abstract: An image projection method for projecting laser beams and an image projector that projects laser beams are adapted to shut down the laser beams instantaneously when an obstacle intruding into the projection area of the laser beams is detected. A detection wave is projected onto a display screen along with the laser beams for displaying an image. The reflection wave of the detection wave reflected from the display screen is detected so as to find out whether the obstacle, if any, is intruding into the projection area of the laser beams.

Abstract: An x-ray protection circuit for a video processor, to disable a horizontal output pulse when a voltage level on the x-ray input exceeds a reference voltage. The x-ray protection circuit comprises a comparator and a bistable device, and incorporates a reset circuit. The reset circuit enables the initialisation of the protection circuit whilst the power is switched on.

Abstract: An EMI (ElectroMagnetic Interference) shield filter for a display unit has a conductive mesh in which a plurality of first and second conductors are arranged in horizontal and vertical directions. A gap in one of the first and second conductors is set larger than that in the other one of the first and second conductors that attenuate a field strength of higher one of horizontal and vertical polarized components of EMI of the display unit, so that the horizontal and vertical polarized components have substantially the same field strength after attenuation. A display apparatus having this EMI shield filter is also disclosed.

Abstract: The invention provides a transparent member for use as a shield against electromagnetic waves characterized in that an electrically conductive reticular pattern is provided on a substrate (1) by forming a thin-film layer (2) of copper or an alloy thereof on the substrate by physical thin film formation and forming a copper thick-film layer (4) on the thin-film layer by plating so as to give the member a total transmittance of at least 50%, the reticular pattern having an electric resistivity of up to 200 m&OHgr;/□.

Abstract: An EMI attenuation device comprising at least two substrates such that the spacing between these substrates is selected to maximize shielding performance at a particular frequency. The device further comprises additional substrates arranged at predetermined distances from the first two substrates to optimize shielding performance. A method also is provided for a multistep, attenuation of impinging EMI, wherein the method also enables see-through and/or hear-through monitoring. Salient features of the method include relatively positioning a plurality of electrically conductive substrates, each of a particular topology, so as to maximize attenuation of the EMI at particular frequencies.

Abstract: A stacked film, which has a conductive film and a dielectric film formed on the conductive film, is stuck on a front surface of a panel portion of a cathode ray tube. One end of a conductive tape is stuck on the dielectric film of the stacked film, and the other end of the conductive tape is stuck on a band functioning as a ground portion of the cathode ray tube. The conductive tape has a conductive sticky layer which has a sheet resistivity in a range of 10 &OHgr;/cm2 to 1 K&OHgr;/cm2. The conductive film of the stacked film is electrically connected to the band of the cathode ray tube via the conductive tape. With this configuration, electrostatic charges on a display screen and leakage of an electromagnetic field from the display screen can be reduced.

Abstract: A method and an apparatus for reducing radiation of a cathode-ray tube display are provided. According to the invention, the voltage signals of the two terminals of the horizontal deflection yoke are pulses of equal amplitude but opposite polarity. Thus, at positions which is equally apart from the two terminals of the horizontal deflection yoke, the electromagnetic radiation generated from the two terminals during operation of the cathode-ray tube can be substantially cancelled. Thus, the influence of the electromagnetic radiation from the horizontal deflection yoke on a user sits in front of the cathode-ray tube display is effectively reduced to a minimum. Further, it is only required to modify the way of winding in the flyback transformer and the cathode-ray tube remains unchanged. In this way, it requires almost no additional power dissipation for the reduction of the undesired electromagnetic radiation. Therefore, the electromagnetic radiation reduction is achieved and the cost is lowered.

Abstract: The invention relates to a software method for reducing the electromagnetic irradiation of the Phase Lock Loop (PLL) within an On-Screen Display Menu system. The method includes the steps as follows: setting the resolution of an OSD system to a predetermined pass value of Electromagnetic Interference (EMI); checking the OSD system; changing the resolution of the OSD system to a value to be displayed if the OSD system is started; keeping on the predetermined value of EMI if the OSD system is not started; repeating the checking of the OSD system step.

Abstract: An apparatus of shielding a very low frequency (VLF) electric field on the front face of a cathode ray tube (CRT) in a video appliance. The apparatus includes a signal detection section, connected to the flyback transformer, for detecting an anode voltage applied to the anode of the CRT; an inversion-amplifying section for inversion-amplifying the anode voltage detected by the signal detection section; a waveform-shaping section for waveform-shaping the negative polarity pulse signal induced from the induction coil; a signal synthesizing section for synthesizing the negative polarity pulse signal inputted from the waveform-shaping section with an output signal of the inversion amplifying section; an output amplifying section for amplifying the synthesized negative polarity pulse signal inputted from the signal synthesizing section; and an open-loop antenna, mounted on a predetermined portion of the CRT, for radiating the synthesized negative polarity pulse signal inputted from the output amplifying section.

Abstract: The present invention is directed to apparatus for enhancing the performance of visual display units which utilize plasma display panels. More specifically, the present invention provides apparatus for providing an electrical noise suppressing/chromaticity enhancing accessory device for positioning in front of the viewing surface of a plasma display panel (PDP). In its most basic embodiment, the accessory device of the present invention comprises an optically selective coating providing high photopic transmittance, continuous high electrical conductivity for RFI shielding, and reflectivity specifically within the near-IR region. It also preferably includes a multiple-dye coating for selectively absorbing IR energy emissions and selectively balancing the chromaticity of the PDP display and a plastic substrate layer to provide impact resistance.

Abstract: Hook- and loop-type tapes are selectively attached to a video display unit and to flexible elongated strips of magnetic material so that the strips of magnetic material may be removably mounted around the video display unit in orthogonally intersecting planes to absorb magnetic radiation from the source. Each strip of magnetic material has a grain orientation parallel to its longitudinal axis and may be formed from grain-oriented ferromagnetic material in the range from M3 to M7. A multiple-layer magnetic shielding material is provided by securing first and second layers of such grain-oriented ferromagnetic material together with the grain orientation of the first layer orthogonal to the grain orientation of the second layer. Each strip of magnetic material may also be formed from this multiple-layer magnetic shielding material.

Abstract: A magnetism shield for a color cathode ray tube is disclosed including: a shadow mask through which an electron beam passes; a mask frame to which the shadow mask is fixed; an inner shield fixed to the mask frame and for preventing the path of the electron beam from being distorted due to magnetism; a panel; a phosphorous surface formed on the inner surface of the panel; and means for shielding an area placed between the shadow mask and phosphorous surface.

Abstract: Electromagnetic interference ("EMI") is reduced in a CRT video display system by spreading-out the EMI-producing spectra present in the video pixel data and/or clock signals. A clock dropping circuit coupled between the display generator main oscillator and the timing generator periodically phase-modulates the timing generator clock signal such that it comprises N phases, where N.gtoreq.2. As a result, each horizontal line of video data and the horizontal synchronization signals is phase shifted. This dual-shifting effect eliminates display image distortion that would result if only the video signal were shifted. Video distortion is further minimized by deriving the horizontal and vertical synchronizing signals from a common constant clock. EMI energy associated with each clock harmonic is spread by a frequency amount .DELTA.f proportional to the rate of phase change in the clock signal, the rate of phase change exceeding half the bandwidth f.sub.m of a standard EMI measurement reference window.

Abstract: In an electrical assembly with an electrical or electronic component part that generates a noise signal with a disturbing frequency, a parallel resonant circuit tuned to the frequency is arranged in the immediate proximity of the component part.

Abstract: A video display appliance having a device for eliminating the radiation wave emitted from a cathode ray tube. The appliance includes a shielding wire wound one to several times along the periphery of a degaussing coil. The pulses having the same level and phase, but inverse polarity to those applied to an anode of the cathode ray tube, is applied to the shielding wire, thereby offsetting the radiation wave emitted from the cathode ray tube.

Abstract: A leakage flux canceling device is provided which requires a small number of parts and which has high space factor. A leakage flux canceling device 30 is mounted to a funnel side of a deflecting apparatus for reducing leakage flux to a panel side attributable to a horizontal deflection magnetic field, and comprises a ring-like body 32 having flanges 32 facing each other, a pair of bobbins 40 and 60 without cores formed on the flanges, a canceling coil 34 wound on each of the bobbins for canceling leakage flux, and winding grooves 48 and 68 formed in the respective bobbins such that the winding of each canceling coil has a greater length in the circumferential direction, and permitting the canceling coils to be wound from the outer surface side of the corresponding bobbins. The bobbins and the ring-like body are formed as a one-piece body, and the bobbins each have an arcuate shape matching the ring-like body.

Abstract: An auxiliary radiation shield for a CRT-type video display terminal includes a generally flat front portion having an at least partially transparent conductive central shield and an opaque frame-like conductive outer shield surrounding the central shield, with the transparent central shield having an area substantially equal to that of the faceplate of the CRT and the opaque outer shield having an area at least equal to that of the transparent central shield, whereby when the radiation shield is supported in front of the CRT with the transparent central shield disposed directly in front of the faceplate, the transparent central shield is in the path of the electrical field that would otherwise extend through the faceplate towards any user in front of the CRT, and the opaque outer shield intersects a substantial portion of the electrical fields that would otherwise extend from the sides and top of the CRT towards that user.

Abstract: A transparent conductive film is formed on an outer surface of a face portion of a face panel and a phosphor screen is formed on an inner surface thereof. A conductive explosion proof band is wound around an outer periphery of a skirt portion of the face panel and the explosion proof band has a grounding potential. A conductive tape is attached along a long side of the face panel and electrically connects the transparent conductive film with the explosion proof band. A compensating electrode extending along a side of the face panel is attached to an upper side of the skirt portion and disposed on a side opposite to the conductive tape with respect to the explosion proof band. An inverse voltage applying portion applies a voltage having a waveform of a polarity inverse to that of the deflection voltage applied to a deflection device to the compensating electrode so as to generate an electric field for canceling an alternating electric field generated from the deflection device.

Abstract: A device for eliminating low frequency radiation of a computer monitor is disclosed, including a pair of first conductive plates disposed on two opposite sides of a cathode ray tube of the monitor to generate a radiation signal thereon that is induced by the low frequency radiation of the monitor, the radiation signal being applied to a circuit which amplifies and inverts the radiation signal to generate an in inverted and amplified output signal, the output signal being applied to a pair of second conductive plates arranged on another two opposite sides of the cathode ray tube to cancel the low frequency radiation of the cathode ray tube.

Abstract: The present invention is directed to methods and apparatus for enhancing the performance of visual display units which utilize plasma display panels. More specifically, the present invention provides methods and apparatus for providing an optically enhancing/noise suppressing device for positioning in front of the viewing surface of a plasma display panel. The device also increases the impact resistance of the PDP. The device of the present invention is manufactured separately from the PDP. The device may be provided with attachment means for securing the device to the surface of the visual display unit in a position in front of the viewing surface of the PDP or may be designed to be free-hanging, i.e., suspended, or otherwise positioned in front of the viewing surface of the PDP.

Abstract: An automatic control device is provided for automatically controlling a television. The automatic control device comprises a distance measuring portion (17) for measuring a distance between a screen of the television and a viewer watching the television, a control unit 11 for determining whether the distance measured by the distance measuring device (17) is shorter than a predetermined distance, a signal generating circuit (13) for outputting a power source signal when the control unit 11 determines that the measured distance is shorter than the predetermined distance, and an infrared-ray emitting diode 14 for emitting infrared rays of light for turning on or off an auxiliary power source of the television 20 in accordance with the power source signal.

Abstract: A graphics controller uses spread-spectrum techniques to modulate the pixel clock over a range of frequencies, reducing the maximum intensity of EMI emissions. When the clock input to the graphics controller is replaced with a modulated clock, the image on a CRT is distorted. Distortion is avoided by only modulating the clock to the flat-panel LCD interface. The vertical and horizontal timing signals for both the CRT and the LCD are generated from the un-modulated clock. Using the un-modulated clock for these critical timing signals ensures that each horizontal line is displayed for the same period of time. Brighter and dimmer lines are thus avoided. A second embodiment modulates the clocks to the CRT and LCD, reducing emissions for both interfaces. Even the timing signals use the modulated clock. The frequency sweep of the modulated clock is reset at the end of every horizontal line. Thus all lines are displayed for the same period, although the transfer of pixels within a line are modulated.

Abstract: A cathode-ray tube apparatus capable of reducing a high frequency electric field radiated from the deflection yoke and the deflection and high voltage circuit to the outside of the cathode-ray tube apparatus. Mounted on the deflection yoke or on the cathode-ray tube are an induction coil for generating a pulse voltage opposite in polarity to a high pulse voltage applied to the h and an electric field cancellation electrode made of a conductive wire to which the opposite polarity pulse voltage is applied. When the opposite polarity pulse voltage is applied to the electric field cancellation electrode, the electric field cancellation electrode radiates an electric field opposite in polarity to the high frequency electric field radiated from the deflection yoke to the outside of the cathode-ray tube apparatus to reduce the intensity of the high frequency electric field.

Abstract: A pivotable protective screen structure which is height-adjustable and forward/backward shiftable. The protective screen structure includes a base body, a protective screen body and two support racks. The base body is formed with a slot passing through the entire base body and two pairs of slide channels disposed on two sides of the slot. In each pair of the slide channels are disposed opposite engaging teeth. The protective screen body includes a protective screen and a frame body framing the protective screen. Two shaft rods are disposed on two sides of the frame body. The support rack has two horizontal support levers defining a clearance therebetween and formed with upper and lower engaging teeth for engaging with the engaging teeth of the slide channels of the base body. The support rack further has a vertical rectangular hanging frame connected to front ends of the support levers and communicated with the clearance thereof.

Abstract: A computer screen filter assembly includes a filter and a frame for receiving the filter. The frame has a pair of generally longitudinally disposed sawtooth surfaces. One of the sawtooth surfaces is disposed adjacent one side of the filter and the other of the sawtooth surfaces is disposed adjacent the other side of the filter. A pair of brackets are slidably attached to the frame adjacent the upper corners of the frame. The brackets each have a horizontally disposed support adapted to engage the top surface of a computer monitor so that the filter is disposed over the computer screen. The brackets each have a pawl capable of engaging and disengaging a respective sawtooth surface so that the frame and the filter can be adjusted to a variety of vertical locations with respect to the computer screen.

Abstract: A control method and device for a monitor, which is used for controlling the brightness, the vertical size, the horizontal size and the contrast of a monitor screen; by means of the minor and slow variation of the size and contrast of the monitor screen, a user's pupils can move naturally so as to reduce the fatigue of a user's: eyes. When the time set is up, a voice will be sent out to remind a user to have a break. The aforesaid device comprises an input setting unit, a microprocessor, a vertical size control circuit assembly, a horizontal size control circuit assembly, a contrast-control circuit assembly, a brightness-control circuit assembly, a voice module, a sensor, a power-supply control module, and a manual/automatic switch.

Abstract: A proximity controlled safety device for a video monitor that prevents accidental over exposure to electromagnetic radiation and optical brightness. A proximity sensor detects the presence of a person near the video monitor. A control device determines how close the person is to the video monitor and either disrupts the video signal being received by the video monitor or disrupts the power running the video monitor depending upon how close the person is standing to the video monitor.