Abstract: The present invention relates to a safety band for a CRT which is capable of increasing a stability of use by enhancing an anti-explosion characteristic based on an optimum band size corresponding to each panel by engaging a safety band to a CRT in which a FCD or a panel obtained by expanding an effective screen is adapted. In a CRT(Cathode Ray Tube) including a panel having an outer flat surface and an inner surface having a certain curvature, and a safety band bent at a mold match line of a side wall portion of the panel and continuously surrounding a side wall portion of the panel in the lengthy direction, a CRT safety band according to the present invention satisfies an expression of inequality of 30.16(%)≦D/W×100≦41.27(%) where W represents the entire width, D represents a width from a front end portion in the width direction to the bent portion.

Abstract: A projection panel assembly is mounted on a casing for holding a screen so as to mount a front panel on the viewing side of the screen. The projection panel assembly includes a fixing portion for directly fixing the front panel and a supporting portion for movably supporting the front panel via the fixing portion. This makes it possible to absorb any distortion of the front panel due to thermal expansion and contraction.

Abstract: In a combined television receiver/video cassette recorder including an upper television receiver portion and a lower video cassette recorder portion, a boundary magnetic shield sheet of silicon steel conventionally used between the television receiver portion and the video cassette recorder portion is dispensed with, and an audio magnetic shield sheet of silicon steel that is smaller than the boundary magnetic shield sheet is provided on a cap of an audio/control head included in the video cassette recorder portion.

Abstract: One embodiment of a tuner integrated circuit includes two mixer circuits, an IF amplifier circuit, three oscillation circuits, a PLL circuit, and a reference oscillation circuit. A plurality of terminals are provided at two sides of the tuner integrated circuit and are connected to these elements. Among the terminals, at least an oscillator-connecting terminal for connecting an externally provided oscillator to the reference oscillation circuit, a power supply terminal through which a power supply voltage is supplied, and a ground terminal connected to a ground are provided at one side of the tuner integrated circuit. The power supply terminal and the ground terminal are disposed adjacent to the oscillator-connecting terminal such that they sandwich the oscillator-connecting terminal therebetween.

Abstract: The present invention is that a digital television comprises an inside, a maintain cover, a panel of a front of the digital television, at least one DVD slot and an ejection button around the panel, a hollow sliding frame inside the digital television, an exit of the sliding frame facing the maintain cover, a personal computer mainframe, which comprises a case, a plurality of grooves on upper surface and lower surface of the case and being installed along a central line of the case, a handle on the case toward an end surface of the maintain cover and being capable of pushing the personal computer mainframe into the sliding frame from the exit of the sliding frame being on the reverse side of the end of the maintain cover, a protruded DVD player connecting to the DVD slot and the ejection button for fast assembling and disassembling the computer mainframe to be in maintain and upgrade and offering multiple functions and options to consumers.

Abstract: Circuits and buses directed to analog signal processing are accommodated in a cabinet functioning as an electromagnetic shielding. Circuits and buses directed to digital signal processing are disposed outside the cabinet. In order to minimize generation of noise from the bus through which digital data is transmitted, a microprocessor combines a plurality of signals and data as digital data for output onto a bus from one I/O port. A decoder that receives and separates the combined data is provided in the cabinet. Data is transferred between the microprocessor and the decoder through one bus. As a result, a digital/analog common tuner has the influence of noise generated from a digital signal processing system on the analog signal processing system suppressed, improving the reception properties.

Abstract: The present invention relates to a foldable structure for a main unit and screen for a game machine whose rotation pivot seat contains a base, top cover and axle joint in-between. A short axle is placed in a transverse through-hole and an axle hole is placed in a cylindrical axle of a pivot joint to allow rotation of the screen around the rotational pivot seat. The moveable retainers of the positioning fasteners are installed outside two ends of an arch plate. A pressure-sustaining device is installed on the pillar to provide elastic recovery for the arch plate. The contact area between the press button and arch plate forms a inclined push edge to enable a stepwise push on the arch plate and further allow the movable retainer to contract inward to facilitate disassembly and assembly of the main unit of the game machine.

Abstract: An assembled housing of rear projection television comprising a foldable main framework and a foldable back cover is disclosed. The main framework is a flat structure as folded, while the main framework forms a ring structure as unfolded. The ring structure includes a front opening and a back opening, while the back cover is positioned in the back opening to form a chamber. The foldable design of the housing facilitates the users and the vendors to assemble the rear projection television, and also reduce the hardware space occupied by the housing, so as to reduce the cost of transportation compared to a traditional rear projection television.

Abstract: An apparatus such as a television signal receiver includes first and second circuit boards. The first circuit board includes a memory, and control circuitry for controlling at least one function of the apparatus. The second circuit board is operably coupled to the first circuit board via control lines. The second circuit board includes a controller for generating first and second control signals. The control lines transmit the first control signals from the controller to the memory when the apparatus is in a first operational state, and transmit the second control signals from the controller to the control circuitry when the apparatus is in a second operational state. To prevent inadvertent writes to the memory during the second operational state, the controller places the memory in an unpowered state when the controller transmits the second control signals to the control circuitry.

Abstract: A metal frame is provided with plural terminals that are respectively connected to a tuner, a video intermediate frequency circuit part, and a stereo demodulator. The frame is preferably divided bilaterally into two regions, with the tuner in a first region and the video intermediate frequency circuit part and the stereo demodulator in a second region. The various components are preferably connected in series, with a U-shaped geometrical layout on the metal frame.

Abstract: A display apparatus includes an LCD panel, a main PCB having a signal processor processing and transmitting a video signal to the LCD panel, and a PCB supporting member supporting the main PCB, a front cover, and a rear cover attached to the front cover to accommodate the PCB supporting member, the main PCB, and the LCD panel, a through hole formed in the rear cover. A TV tuner unit includes a TV tuner receiving a TV video signal, a casing accommodating the TV tuner, and a projection formed on the casing. A tuner accommodating part includes a housing in which the TV tuner unit is removably inserted, a projection holder locking and releasing the projection of the casing, a pushing part inserted into the through hole of the rear cover and releasing the projection from the projection holder. The TV tuner is easily combined into and removed from the display apparatus.

Abstract: An apparatus such as a television signal receiver includes first and second circuit boards. The first circuit board includes a first device such as a memory, and control circuitry for controlling at least one function of the apparatus. The second circuit board is operably coupled to the first circuit board via control lines. The second circuit board includes a controller for generating first and second control signals. The control lines transmit the first control signals from the controller to the first device when the apparatus is in a first operational state, and transmit the second control signals from the controller to the control circuitry when the apparatus is in a second operational state.

Abstract: In a tuner unit, a metal shielding plate standing upright on a circuit board is provided between circuit blocks formed on the circuit board so as to electrically shield the circuit blocks from each other. A metal bridge that connects the shielding plate and a frame is provided between some circuit blocks and at a distance from the circuit board so that an electrical component can be mounted on a portion of the circuit board opposing the bridge. This makes it possible to reduce the mounting space for the electrical component and to achieve a small tuner unit.

Abstract: A flat-type monitor to easily control a slant angle of an video display screen to a flat surface is disclosed. The present invention includes a flat video display unit having an video display screen, casings for containing and supporting the video display unit to expose the video display screen, and a slant controller for controlling a slant angle of an assembly of the video display unit and the casings corresponding to external force affecting on the assembly.

Abstract: A method of fabricating a monitor includes fabricating a display unit having a back edge section, forming an adhesive section on the back edge section of the display unit, adhering a first surface of at least one aluminum frame to the adhesive section of the display unit, and fixing a second surface of the aluminum frame to the back cover. The adhering is accomplished with a double-sided tape. The fabrication method offers simple execution and prevents damage to an optical display unit.

Abstract: PTV cabinetry comprising molded plastic foam parts formed from expanded polystyrene or phenolic foam. The foam parts are preferably functionally designed to replace the equivalent parts presently being made by wood fabrication or other molded plastic techniques. In a preferred embodiment, a PTV cabinet may be assembled from thee matching molded foam parts. The foam parts may be uniquely located with respect to one another via locating features molded into the foam parts. Once assembled, an external cabinet or cosmetic fascia part may be placed over the foam parts.

Abstract: A flat screen television set which is equipped with electronic sensors which activate a servo-motor or the like to move the screen in response to the presence and movement of a viewer. The television screen is mounted for swivel movement and is capable of movement to the right, left, up and down to the full extent of pre-determined angles. When the viewer moves beyond a pre-determined angular limit, the screen will swivel to the opposite direction until the sensors again detect the presence of the viewer. If there are multiple viewers, the sensors will respond to the viewer in possession of a remote control device.

Abstract: A projection apparatus including an optical unit for magnifying and projecting an image by using light of a light source and a reflecting member for reflecting the projected image from the optical unit. This projected image is reflected by the reflecting member onto a rear surface of a screen. The projection apparatus further includes a housing containing the light source and which has a plurality of housing surfaces and an air exhausting member for discharging interior heat of the housing with the air exhausting member including an air passage. First and second aperture sections are provided on different housing surfaces from each other for exhausting air from the housing. These first and second aperture sections communicate with the same air passage but are respectively exhausting air from the same air passage in generally perpendicular air path directions.

Abstract: A screen assembly holding mechanism is provided for multiscreen displays employing an abutted array of substantially identical display devices that each display a subdivided portion of a total image such that together they display the total image. Each display device includes a screen and a Fresnel lens that form a screen assembly. The screen assembly is connected to the display device by the screen assembly holding mechanism. The screen assembly holding mechanism provides a significantly smaller boundary between the display devices than has before been possible and does not significantly interrupt the total image. The screen assembly holding mechanism also allows for differing expansion and contraction rates of the screen and Fresnel lens and substantially lessens the likelihood of either becoming detached from the screen assembly holding mechanism. The screen assembly holding mechanism may include a safety lip that covers an outer edge of the screen for protection against injury.

Abstract: Recording/reproducing apparatus including recording electronics and playback electronics and a radio receiver responsive to a selected television signal for supplying a composite video signal to the recording electronics at selected times are contained within a unitary package designed to rest on a surface. A video camera supplies composite video signal for selective application tothe recording electronics at other times, the supplying of those composite video signals to said recording electronics being done by means other than cabling from the video camera to the unitary package. The video camera is included within the same unitary package as the magnetic recording/reproducing apparatus in some systems, thus to eliminate cabling from the video camera to the unitary package.

Abstract: A thermal dissipation structure is suitable for use with a first and second housing members to be assembled with each other. The first and second housing members are provided with a first and second assembly structure, respectively. The first assembly structure includes a first contact surface and the second assembly structure includes a second contact surface. A plurality of recesses are arranged on either the first or second contact surface. The first and second housing members assemble with each other through engaging the first and second assembly structures into each other so that the first contact surface abut against the second contact surface, forming thereby a contact interface between the first and second housing members. The recesses form a plurality of ventilation passageways that communicate with an interior and an exterior of the first and second housing members along the contact interface to dissipate heat.

Abstract: The present invention provides for an integrally weighted base suitable for attachment to a bottom surface of an enclosure to form an integrally weighted cabinet. The integrally weighted cabinet is able to satisfy load bearing and tip over standards without requiring the addition of separate weights. The base preferably includes a frame and fill material disposed within the frame. The frame may be metal or plastic. Fill material is poured into the frame and allowed to set. The fill material may be any suitable material having a density sufficient to act as a weight or counterbalance, such as, e.g., concrete, a concrete and fiber mixture, metal, or a concrete and metal mixture. The base may further include a plurality of openings to dissipate heat from within the interior space of the cabinet. In one implementation of the present invention, the base replaces a bottom panel of a typical PTV cabinet and further eliminates the need for attaching separate weights onto a bottom panel of a typical PTV cabinet.

Abstract: A display apparatus is provided that includes: a display part including a panel with an effective face on which a picture is displayed, and a supporting face extending along a circumference of the effective face; a rear cover provided at the rear of the panel and surrounding the rear cover; and a front cover including an opening through which the effective face of the panel is exposed to the outside of the display apparatus, a front part contacting with and being supported by the supporting face of the panel, and a skirt part extending from each side of the front part toward the rear cover and being combined to the rear cover. With this configuration, such display apparatus provides a panel that is conspicuous for flatness in appearance.

Abstract: An integrated protective apparatus extruded from a PVC material for semi-rigidly attaching a planar protective element to a lens assembly and chassis in a projection television (PTV). The apparatus includes a plurality of channels, each configured to accept one or more of a plurality of lenses or protective elements. The apparatus can include molded protrusions that can be arranged to apply a retentive force against the lenses and protective elements supported within the channels.

Abstract: A computer monitor case (10) having a subframe (28) with an intermediate bucket (12) affixed thereto to form a front assembly (56). A top bucket (14) is affixed to a bottom bucket (16) by rivets (52) to form a rear assembly (55). The rear assembly (55) is affixed to the front assembly (56) by top fastening clips (36) wide fastening clips (38) and narrow fastening clips (40). Alignment pins (34) on the subframe (28) align with alignment pin notches (42) and side alignment pin notches (64) on the intermediate bucket (12) and top bucket (14) respectively. Side lips (62) and a front lip (58) on the top bucket (14), attachment ribs (50) on the top bucket (14) and bottom bucket (16), and an intermediate bucket lip (44) on the intermediate bucket (12) provide rigidity and alignment and are used in conjunction with other components as fastening means to hold the computer monitor case (10) together.

Abstract: Disclosed is a display apparatus including a front cover, a rear cover coupled the front cover and forming an accommodating space, a display panel disposed inside the accommodating space, a main PCB having a signal processor and transmitting a video signal to the display panel, and a PCB supporting member supporting the main PCB. The display apparatus includes a TV tuner unit having a TV tuner receiving the TV video signal, a casing accommodating the TV tuner, and a connector electrically connected with the TV tuner, a tuner unit accommodating part accommodating the TV tuner unit, and a connection port provided at the tuner unit accommodating part for transmitting the TV video signal from the TV tuner unit to the signal processor.

Abstract: An installation structure is so configured as to allow a panel-type display device to be installed in the following manner. A fixing frame is fixed and fastened to a rectangular opening portion of a wall in advance. After being placed in the fixing frame, the panel-type display device is pressed by a pressing member against the fixing frame.

Abstract: A liquid crystal flat panel monitor is mounted in a frame that is positioned in an overhead compartment of an aircraft. A D.C. motor is mounted for pivoting the monitor. A voltage source having positive and negative polarity controls the D.C. monitor causing it to pivot the monitor to a viewing position or to a stowed position. The D.C. motor carries a flywheel on its shaft that stores energy as the motor rotates. During power loss, a controller sends a voltage pulse to the D.C. motor to spin it at high speed and store enough energy in the spring flywheel to pivot the monitor to a stowed position. A deployed position switch senses when the LCD monitor is fully rotated to its open view position. An electromagnetic latch keeps the LCD monitor locked in its stowed position until it is to be displayed for viewing.

Abstract: A television receiver monitor intended to be built into a wall and used in connection with an audio/video entertainment center can be adapted to provide various visual aspects corresponding to the control capabilities of the user. When only a bezel surrounding the screen is visible, all controls are made through a control center unit of the audio/video entertainment center, so that the user must have a high degree of knowledge about the overall system, whereas when the bezel and a control panel are visible, the user need not extensively involve himself with the audio/video entertainment center except to control the audio portion of the program. When confronted with an unsophisticated or underage user, a speaker grill is provided in addition to the bezel and control panel, so that no interaction with the audio/video entertainment center is required by the user in order to enjoy a video and audio program.

Abstract: Appliances designed to be mounted on the bottom of a structure such as an overhead cabinet system. The appliance has an integrated unit (or module) which includes a television tuner and, optionally, a player for an optically readable disk. The appliance also has a display unit of the flat screen type. The display unit is attached to the appliance module by a universal pivot mechanism which allows the unit to be: (a) rotated and tilted to face a viewer, and (b) folded up against the appliance module and out of the way when the display unit is not in use.

Abstract: A large format modular video display includes a plurality of video image units, each image unit sealed against environmental intrusions. Each image unit includes a housing having a front panel and a rear door panel that may be opened for access to the interior. Within the housing, a strongback member supports an LED circuit board having a large plurality of LEDs supported in pixel array, each pixel comprised of a plurality of LEDs of various colors. A gasket member is dimensioned to cover the pixel array of LEDs, and includes an array of LED holes in registration with the pixel array of the LED board, so that each LED extends through a respective hole in the gasket. The front panel of the housing also includes an array of LED holes in registration with the holes of the gasket member, so that each pixel group of LEDs may extend through respective holes in the front panel and protrude forwardly therefrom.

Abstract: A display apparatus 10 comprises at least one speaker 16 and a cathode-ray tube (CRT) 14 secured within an enclosure 12 to a plurality of mounting bosses 50. The cathode-ray tube 14 has an evacuated envelope 17 with a substantially rectangular-shaped faceplate panel 18 having four corners and a viewing portion 26 extending to a peripheral sidewall 28. The viewing portion 26 has a luminescent line screen 32 on the interior surface thereof The viewing portion 26 including two orthogonal axes, a major axis, X, parallel to a longer dimension of the viewing portion and a minor axis, Y, parallel to a smaller dimension of the viewing portion. The CRT 14 has therein an electron gun 38, capable of generating at least one electron beam, aligned along a central longitudinal axis, Z, of the CRT that is perpendicular to the major and minor axes. The CRT 14 also has a color selection electrode 36 in proximity to the interior surface of the viewing portion 26 of the faceplate panel 18.

Abstract: The invention is about a television that has a built-in receptacle such that its remote control can be placed in the receptacle. In addition, the presence of the remote control in the receptacle turns OFF the TV while removal of it turns ON the TV. Such a remote control, by design, lacks the function to remotely turn ON or OFF the TV. This would drastically reduce the possibility of a missing or misplaced remote control. The built-in receptacle may also allow storage of spare batteries for the remote control.

Abstract: A cathode ray tube (CRT) is housed in an enclosure by using four clamp devices, two wedges and a housing. The clamp devices are located at the corners of the CRT and are secured to the enclosure with screws. The CRT rests on the housing, which is preferably comprised of fixed posts that the CRT rests on top of. The wedges, preferably made of rubber, are placed between the CRT and the enclosure and usually located at the top of the CRT. The clamp devices, housing and wedges are used to secure the CRT in the enclosure.

Abstract: The present invention might is a large-screen electronic building directory system that also integrates advertising and non-commercial content and is positioned and deployed in various public spaces, such as commercial building lobbies, indoor shopping malls, airports or other commercial and transportation hubs. The system combines facility directory, facility services information, concessionaires and advertising sponsor information in a user interface suitable for use in the target environment. A self contained, computer integrated plasma display has a 16:9 aspect ratio and is subdivided into a 14:9 media window portion and a 2:9 control portion. Interaction is through touch-sensitive panel sections. Content establishment and updating is effected through a wide area network communication interface, which also supports bi-directional videophone communication between a system user and offsite service providers.

Abstract: The present invention relates to a device for matching of a picture tube, comprising a product carrier arranged to carry the picture tube along a matching line to a matching position, said carrier being connected to a voltage source, and a matching means, located in the matching position for performing the matching of the tube. The device further includes a connecting socket, adapted to be mounted onto and electrically connected to said picture tube base connector. The connecting socket comprises a first terminal for connection of the cathode pre heating filament to said voltage supply via the carrier, and a plurality of second terminals for separate, simultaneous connection of said matching means directly to said socket.

Abstract: In a box structure for a TV-VCRcombo in which a CRT as a TV image display unit and a VCR are accommodated in a box unit and in which a fly-back transformer installation frame is detachably provided on an internal side wall of the box unit, the fly-back transformer installation frame is detachably slid into a main body of the box unit through cooperation between a rail-like guide portion provided on the side wall of the box unit and an insertion piece provided on the fly-back transformer installation frame; a hook member for preventing a dislocation of the fly-back transformer installation frame is provided on the box unit main body at a position where the fly-back transformer installation frame is mounted in place; an erect wall portion is formed on the fly-back transformer installation frame so that the hook member locks; and a hook disengagement preventing portion is formed on the erect wall portion for preventing a movement in a direction perpendicular to the hooking movement of the hook member.

Abstract: A size adjustable mounting frame for encompassing a television screen protector and for fastening the so-framed screen protector to a television housing to extend over the television projection screen. The adjustable mounting frame includes a plurality of frame members equal to the number of longitudinal edges of the television screen protector. Each of the frame members has a first end, a second end, at least one engager for attaching the frame member to an edge of the screen protector, and at least one retainer member for attaching the frame member to a television housing receptor member. The adjustable mounting frame also includes a plurality of angled connector members for connecting adjacent respective end portions of adjacent frame members to each other. Each connector member includes a first end and a second end, such that each end thereof is configured to slideably accept a selected length of the end portion of one frame member in accord with the size of the screen protector.

Abstract: The present invention relates a video monitor display positioning system of the type in widespread use in passenger-aircraft entertainment systems and includes a housing in which a video screen is rotatably positioned for rotation between a retracted position and an extended position, but with rotary motion provided through a hydraulic system that includes a mechanical linkage from the screen to a linear motion to rotational motion actuator subassembly which is in turn actuated by a hydraulic system that includes a cylinder, two mutually opposed, hollowed pistons, an internal spring positioned within the cavity formed by the hollow pistons, a hydraulic circuit including a hydraulic oil reservoir, an electric motor that controls a hydraulic pump, a solenoid valve and an over pressure switch.

Abstract: A display control apparatus has a display panel, which is placed in its inactive state through a user's operation when not being used, on the one hand, and is placed in is active state when being used, on the other hand. After completing the display of video, the display panel is received automatically, thus ensuring protection of the display panel. It also prevents a beginning part of video from being hidden for a user. All video can be displayed on the display panel that stands up in its prescribed active state. In the display control apparatus, a rotary motor driver and a slider motor driver are used for placing the display panel received in a receiver. An encoder detects whether or not the display panel is placed in its prescribed active state. When the active state of the display panel is detected, an output controller outputs a video signal to the display panel for display.

Abstract: An overhead projector mounting system is provided that is configured to support a projector in a ceiling of a room. The system includes a housing having an opening through which an image generated by the projector is transmitted. Preferably, the system includes a mirror to reflect the image generated by the projector toward a viewing surface in the room.

Abstract: A size adjustable mounting frame for encompassing a television screen protector and for fastening the so-framed screen protector to a television housing to extend over the television projection screen. The adjustable mounting frame includes a plurality of frame members equal to the number of longitudinal edges of the television screen protector. Each of the frame members has a first end, a second end, at least one engager for attaching the frame member to an edge of the screen protector, and at least one retainer member for attaching the frame member to a television housing receptor member. The adjustable mounting frame also includes a plurality of angled connector members for connecting adjacent respective end portions of adjacent frame members to each other. Each connector member includes a first end a second end, such that each end thereof is configured to slideably accept a selected length of the end portion of one frame member in accord with the size of the screen protector.

Abstract: A device for restricting the movement of a printed circuit board to which tactile switches are mounted. The device which prevents a relative movement of the printed circuit board with respect to a bracket to facilitate the installation of the printed circuit board while structuring the securing means for the circuit board so that a force is exerted that counters forces created by the activation of switches directly mounted to the main printed circuit board. The printed circuit board retaining device acts to maintain the printed circuit board in the appropriate location with respect to the supporting bracket while preventing the fracturing of tactile switches when an excess force is applied to the tactile switches.

Abstract: In the case where the cabinet has many long segments, it takes a long period of time until they are cooled in a die. In addition, looseness was produced between the board and the guide rail due to a presence of pulling taper and this looseness became a cause of generating vibrating sound. There are constituted integral molded guide rails integrally molded with the casing to support the front end of the board when the board is stored in a casing along a predetermined wall surface, and a board holder constituted as a separate component from the integral molded guide rail, capable of sliding the board and inserting it. Accordingly, it is not necessary to oppositely face a long rail having the substantial same length as that of the board as the integral molded guide rail and so a speed in which the molded product is cooled in a die is made fast. Further, since the board holder is a separate component element, looseness between the board and the guide rail can be easily reduced.

Abstract: A platelike rib 7 moulded integrally with a front cabinet is linked via the leg pieces 61 with the boss 5. The rib 7 has a high strength portion 73 of increased thickness extending lengthways to be continuous to a rear end portion of the boss 5. A link portion of the rib 7 with an outer board 11 is formed over an entire length in smaller thickness than the high strength portion 73. The surface of the high strength portion 73 at a front end portion is formed like a concave curved face 75.

Abstract: An audio apparatus for an equipment relates to an improvement of the sound quality in an acoustic apparatus of the equipment in which for an equipment having a woofer (4) and a tweeter (5), the acoustic apparatus (10) of the equipment includes a panel portion (3) which forms a part of a casing (2) of the equipment and has a plurality of holes (H), a sound conductor (8) which is arranged between the woofer (4) and the panel portion (3), and a buffer member (9) which is provided between the sound conductor (8) and the panel portion (3) and absorbs any woofer vibration.

Abstract: A control box for a monitor includes a rotary type control box rotatably engaged at the front casing and having the function buttons formed at a curved outer surface of the rotary type control box. A boss is formed on an outer surface of the control box at a side opposite to the function buttons for hiding the interior of the monitor for thereby enhancing an outer look of the monitor. A stopper is formed at the front casing of the monitor and contacting with the boss when rotating the control box for limiting a rotation of the control box at a certain angle, for thereby preventing any interference with external items near a monitor because a rotary type control box having various function keys and mounted on a front surface of the monitor is not protruding to the outside of the front casing when operating the function keys.

Abstract: An installation structure is so configured as to allow a panel-type display device to be installed in the following manner. A fixing frame is fixed and fastened to a rectangular opening portion of a wall in advance. After being placed in the fixing frame, the panel-type display device is pressed by a pressing member against the fixing frame.

Abstract: A projection system includes a projector for emitting a light beam; a screen and a first medium for converting a linear polarized form of the light beam from the projector to a quasi-circular polarized form of the light beam polarized in a first circular sense. The projector also includes a mirror for reflecting and phase shifting a quasi-circular polarized form of the light beam to a circular polarized sense substantially opposite of that exhibited by the light beam before being reflected by the mirror, and a second medium optically disposed between the mirror and the screen and for selectively converting the light beam between linear polarization and quasi-circular polarization.

Abstract: A TV receiver includes a cabinet, a cathode ray tube (3) with a substantially rectangular screen (4) and two brackets (6) which are secured to side parts (9) of the cathode ray tube for the purpose of mounting the cathode ray tube in the cabinet. For easy mounting of electronic parts inside the cabinet, the TV receiver includes a lower and an upper cabinet part (1,2), and the brackets (6) and the lower cabinet part (1) includes portions for (12-17) temporarily positioning and holding the cathode ray tube (3) in a tilted position in the lower cabinet part for servicing purposes.