Abstract: An apparatus for operating a pair of 3-D glasses to view a 3-D video signal on a TV. The apparatus includes a controller having an input for receiving a 3-D video data stream from a video source, an output for delivering a portion of the 3-D video data stream as a video signal to be displayed on the TV, synchronization programming for reading the 3-D video data stream and obtaining 3-D commands relating to said 3-D video data and a transmitter for wireless transmitting the 3-D commands. The system further includes 3-D glasses having a receiver configured to receive the 3-D command signal, left and right shutters configured to selectively close and open according to the 3-D commands, and a control input configured to calibrate the glasses to the displayed video signal of the TV.

Abstract: Disclosed is a method of controlling a display apparatus, a display apparatus and shutter glasses, the method including: establishing a pairing with three dimensional (3D) glasses; receiving first information related to at least one of an operation, a status and a structure of the 3D glasses; storing the first information; and displaying based on the first information, wherein the first information includes information about one of the 3D glasses and the display apparatus.

Abstract: An apparatus for interfacing with a display screen is provided. The apparatus includes a frame. The frame includes (a) a pair of shutter lenses, (b) a light coupled to the frame; and (b) a circuit integrated with the frame to control the pair of shutter lenses and control the light coupled to the frame. The circuit is configured to communicate with a display device to enable synchronization of the shutter lenses and the display device. The light is analyzed to determine position of the frame relative to the display device, and the position is used to cause an adjustment in display output when viewed from the perspective of the position of the frame.

Abstract: An illuminator of an electronic endoscope system is provided with a light emission mechanism that consists of a light source emitting white light as general illumination light and an optical chopper that turns a disc at a revolution speed in front of the light source. The disc consists of transparent glass sectors and filter sectors. Each time the general illumination light passes through the filter sectors, the illuminator emits specific illumination light having different spectral characteristics from those of the general illumination light, so a CCD outputs two kinds of image signals under the general illumination light and the specific illumination light. A spectral image producer produces a spectral image of arbitrary wavelength bands from the two kinds of image signals, whereas a general image producer produces a general image from those image signals captured under the general illumination light.

Abstract: Technology for controlling image display according to the state of a viewer wearing eyeglasses to view 3D images is provided. When an inclined angle of eyeglasses is in a predetermined range, an image display device alternately displays a left-eye image and a right-eye image. When the inclined angle of the eyeglasses exceeds the predetermined range, the image display device does not switch the left-eye image with the right-eye image. For example, the image display device displays 2D images. Optical shutters of the eyeglasses are synchronized with the left-eye image and the right-eye image. When the image display device does not switch the left-eye image with the right-eye image, the optical shutters are both open.

Abstract: Methods and apparatus for signaling timing of refreshes of stereographic displays are provided. In some embodiments, light emitting elements are used to signal the start of a display refresh and to signal when the light emitting elements of the display have attained a stable optical state following the display refresh. In some embodiments, light emitting elements used to signal timing of display refreshes include light emitting elements defining a display area of the display.

Abstract: An image display system for displaying interlaced images to achieve three dimensional effects. The system includes a user electronic device, such as a computer or television, with a display with a faceplate. The electronic device operates the display to generate an image that includes an interlaced portion at an inner display surface or location at an internal offset distance from an outer surface of the faceplate. The image display system includes a lens array with lenticules configured to focus through the lens array material, through an air gap, and into the faceplate the internal offset distance rather than simply on the back of the lens array. The display system may also include a mounting mechanism for selectively positioning the lens array relative to the faceplate to adjust the size of the air gap so as to focus the lens array onto the image being displayed within the display device.

Abstract: A video display system and method that allows two different users to view different video streams on the same monitor without being able to see the other user's video stream. Frames of each video stream are rendered on the monitor. Each user views the monitor using a viewing device that allows the user to see his/her respective video stream and blocks the user from seeing frames associated with the other video stream.

Abstract: A radio signal transmitter receives, from an image display device (i) synchronizing signals for switching between displaying a right-eye image and displaying a left-eye image on the image display device and (ii) liquid crystal shutter control data indicating which image is displayed, and transmits the synchronizing signals and the liquid crystal shutter control data to stereoscopic image glasses. The radio signal transmitter includes: a period detecting section that detects a period of each of the synchronizing signals; and a period data storage section in which the period is stored as period data. The radio signal transmitter is configured such that the period data in the period data storage section is updated every time the period of each of the synchronizing signals is detected. This makes it possible to provide a radio signal transmitter, stereoscopic image glasses, and an image display system that achieve a reduction in power consumption.

Abstract: A display control circuit includes: a frame memory; a first correction image data generation unit that generates first correction image data that corrects a response characteristic of an electro-optical element; a second correction image data generation unit that generates second correction image data that corrects the intermixing of a right-eye image and a left-eye image; a selection unit that selects the first correction image data in a first field and the second correction image data in a second and subsequent fields; and a correction unit that generates output image data by correcting the first image data.

Abstract: A method for adjusting an ambient brightness received by a pair of shutter glasses which are operative under a two-dimensional image viewing mode includes: generating an ambient brightness control signal; and adjusting a shutter-open period of eyeglass (s) of the shutter glasses according to the ambient brightness control signal, for adjusting a length of the shutter-open period of the eyeglass (s) to be longer than an activation time length of a backlight of a display device so as to adjust the received ambient brightness.

Abstract: An image display device that provides stereo image display with the help of special glasses (i.e. a vision aid) and that allows a viewer looking at the screen without such a vision aid to view a less strange image, and a stereo image display system including such an image display device are provided. The image display device includes: a display module capable of displaying a left eye image (L) to be viewed via a left eye portion of the vision aid and a right eye image (R) to be viewed via a right eye portion of the vision aid, the left eye and right eye images being displayed separately in time and space; and an average brightness controller capable of regulating an average brightness of the left eye image and an average brightness of the right eye image displayed on the display module in one given frame such that these average brightnesses are different from each other.

Abstract: A method for displaying first and second stereoscopic images to first and second viewers provides the first viewer with a first decoding device having a first viewer differentiating element for receiving the first stereoscopic image and further having a first left- and right-eye differentiating elements for separating left- and right-eye images. The second viewer is provided with a second decoding device having a second viewer differentiating element for receiving the second stereoscopic image and further having a second left- and right-eye differentiating element. The first stereoscopic image is displayed to the first viewer by forming a first left-eye image and forming a first right-eye image, each over substantially half of the refresh period. The second stereoscopic image is displayed to the second viewer by forming a second left-eye image and forming a second right-eye image, each over substantially half of the refresh period.

Abstract: A system and method is presented for enabling the viewing of multiple, different programs simultaneously on a single television display. The system can use alternate frame sequencing to alternate the programs frame-by-frame. A first pair of shutter glasses received a synchronization signal from the television and controls both the left and right glass in tandem to view the first program, while a second pair operates similarly, but uses the same synchronization signal to view the second program. Alternatively, the system can use polarization, in which a first program is polarized in a first orientation while a second program is polarized in a second orientation. Polarized glasses with matching orientations allow the user to watch only a single program.

Abstract: There are provided a transmitter, a display, a shutter eyeglass device, a transmission/reception system, a display system and a transmission/reception method allowed to achieve highly reliable communication between a transmission side and a reception side. The transmitter includes: a transmission section holding plural kinds of commands each represented by a plurality of bits and repeatedly transmitting a command set, the command set being configured of one or more kinds of commands which are selected from the plural kinds of commands and combined in predetermined order, in which a bit pattern representing a whole of the command set is the same as a bit pattern held in a receiver.

Abstract: The present invention relates to a 3D picture processing device comprising an input unit for receiving a video signal, an output unit for providing a video signal for a 2D display device, preferably a TV set, and a 3D shutter glasses driver unit for generating a driving signal to control 3D shutter glasses. A delay compensation unit is coupled to the driver unit and adapted to compensate for the processing delay present in the display device, preferably the TV set.

Abstract: A display control device (2) disclosed includes (i) a display/non-display video image determining section (70) that determines, on the basis of (i) video image information about a video image displayed by a display device (400) and (ii) viewing mode information indicative of a viewer's desired mode of viewing a video image, whether the video image displayed by the display device (400) is a display video image or a non-display video image and (ii) a shutter operation control section (80) that closes a right-eye shutter and a left-eye shutter of a liquid crystal shutter (500) when a video image determined as a non-display video image, which is unnecessary for the viewing mode and which is thus not to be displayed to the viewer, is displayed by the display device (400). The display control device (2) thus closes the right-eye shutter and the left-eye shutter of the liquid crystal shutter (500) when a non-display video image is displayed by the display device (400).

Abstract: A three-dimensional display device includes display unit for displaying left- and right-eye images alternately; and transmission control unit for transmitting a synchronizing signal indicating a timing for starting to display the left-eye image or the right-eye image on display unit, intermittently at a given transmission timing. Transmission control unit changes the given transmission timing according to a given condition and transmits the synchronizing signal.

Abstract: A method for display of stereoscopic images defines at least first and second unequal subsets of viewers and provides at least the first subset of viewers with a first decoding device for viewing displayed stereoscopic images. From a single display apparatus, separate images are displayed for each eye of at least the first and second subsets of viewers in a repeated sequence of displaying the image for the first eye of all viewers during a first time interval; displaying the image for the second eye of the first subset of viewers during a second time interval; and displaying the image for the second eye of the second subset of viewers during a third time interval. The first, second, and third time intervals are non-overlapping.

Abstract: An image apparatus with reduced three-dimensional (3D) crosstalk includes a shutter control system including an infrared (IR) signal transmitter configured to receive from a display device for displaying two or more light-off sections and two or more light-on sections arranged alternately in one image frame, information corresponding to the light-off sections and the light-on sections, and to output an IR signal corresponding to the information, the IR signal corresponding to a start of a first light-off section of the light-off sections in the image frame, and a shutter controller configured to receive the IR signal, and to control opening or closing of a left shutter and a right shutter in accordance with the IR signal.

Abstract: Disclosed are a display apparatus, three-dimensional (3D) glasses and a control method thereof. The method of controlling three-dimensional (3D) glasses for a display apparatus includes: synchronizing clocks for communicating with the 3D glasses; generating drive timing information for driving shutters of the 3D glasses from the synchronized clocks and a frame sync signal of a displayed image; and transmitting a glasses control message, comprising the drive timing information, to the 3D glasses.

Abstract: Disclosed are a display apparatus and a system including the same. A 3-dimensional (3D) display apparatus includes a display unit; a video signal processor which extracts frame sync signals corresponding to a left-eye image and a right-eye image from a predetermined 3D video signal, and processes the left-eye image and the right-eye image to be alternately displayed on the display unit; and a first communication unit which communicates with an external 3D display apparatus, and transmits a display sync signal based on the extracted frame sync signal to the external 3D display apparatus so that a 3D image displayed in the external 3D display apparatus can be synchronized with order of the left-eye image and the right-eye image displayed on the display unit.

Abstract: A display system and method for providing user adjustability of displayed three-dimensional images. The system simultaneously displays a left-eye perspective view of an image and a right-eye perspective view of the same image, at a separation distance, and allows for the selective control of the separation distance via, for example, a user interface. The system and method allows multiple users to use multiple pieces of display hardware and quickly return each piece of display hardware to a user's own individualized preferences and compatibilities. It additionally allows a user to vary the display properties, such as providing extra foreshortening or stretching along the depth axis, quickly and simply.

Abstract: In a method of managing 3D video stream, 3D video stream is output to a connected display. The connected display displays the 3D video stream after a delay associated with the connected display. A timing offset is determined based on the delay. The timing offset is operable to be used to synchronize shutter operations of at least one shutter glasses with the presentation of the 3D video stream. A shutter control signal based on a frame start indication from the 3D video stream is transmitted. The frame start indication is operable to be used to determine a frame rate of the 3D video stream, and the shutter control signal is operable to be used to maintain synchronization of the shutter operations of the at least one shutter glasses with the presentation of the 3D video stream at the connected display.

Abstract: A three-dimensional video system includes a panel driving module, a signal transmitter and a shutter glasses. The panel driving module includes a timing controller, and a control unit, for generating a control signal. The signal transmitter is utilized for transmitting a radio frequency control signal according to the control signal. The shutter glasses includes a receiver, a calibrating and selecting unit, for alternating the receiver between a first operating status and a second operating status, and generating a calibration signal according to the received radio frequency control signal, and an LCD glass, for operating according to the calibration signal.

Abstract: A control method applied to a video display apparatus collaborating with three-dimensional glasses for presenting stereoscopic images includes sequentially transmitting a first video driving signal and a second video driving signal corresponding to a first video frame to a display screen for respectively driving a first display region and a second display region of the display screen; after transmitting the first video driving signal to the display screen is accomplished, activating a first backlight source of a scanning backlight module during a first period to provide backlight to the first display region driven by the first video driving signal for image display; and after transmitting the second video driving signal to the display screen is accomplished, activating a second backlight source of the scanning backlight module during a second period in order to provide backlight to the second display region driven by the second video driving signal for image display.

Abstract: Controlling a shuttering device. A method includes detecting from a use environment a set of encoded signals for use in controlling a shuttering device. The set of encoded signals are analyzed to determine an encoding scheme for the set of encoded signals. The encoded signals are prospectively decoded in the environment according to the determined encoding scheme to control the shuttering device.

Abstract: A shuttering device can improve a viewer's perception of displayed three-dimensional (3D) content by concurrently shuttering both of the viewer's eyes during frame transitions. One implementation includes the shuttering device receiving a shuttering signal synchronized to a display of 3D content at a display device. In response to the shuttering signal, the shuttering device can shutter the display of the 3D content. The shuttering can include shuttering a first shuttering component during a first time period corresponding to display of second eye 3D content. The shuttering can also include shuttering both the first shuttering component and a second shuttering component concurrently during a second time period corresponding to display of a transition from the second eye 3D content to first eye 3D content. Additionally, the shuttering can include shuttering the second shuttering component during a third time period corresponding to display of the first eye 3D content.

Abstract: A time multiplexed stereo display system is provided. The system includes a video player to output a sequence of image frames with respect to multiple stereo-displayed images. Each of the stereo-displayed images is formed by a first-view image and a second-view image with a parallax therebetween. The sequence of the image frames is sequentially displaying all of the first-view images and then sequentially displaying all of the second-view images to symmetrically transmitting first-view/second-view images. Further, a display panel receives the sequence of image frames for accordingly displaying the image frames. Multiple shutter eyeglasses, are controlled by the video player to transmit the stereo-displayed images, respectively, in accordance with the sequence of the image frames. Each of the shutter eyeglasses has a first-view glass and a second-view glass to accordingly transmit one of the first-view images and the second-view images in each display of the image frames.

Abstract: Three-dimensional (3D) glasses for viewing a 3D display apparatus and a control method thereof are provided. The 3D glasses include: a glass unit including a left eye glass and a right eye glass; a driving unit which drives the glass unit; a mode setting unit which sets an operation mode of the glass unit between a 3D viewing mode or a 2D viewing mode; and a control unit which controls the driving unit to change an opening and closing shutter setting or a rotational direction of the glass unit according to the set operation mode set by the mode setting unit. Accordingly, a user convenience is improved.

Abstract: A 2D-to-3D delay compensation method for making a pair of shutter glasses be synchronization with a display device's playback of a video source is disclosed. The display device is coupled with a 2D-to-3D conversion box. The method includes the following steps: firstly, the 2D-to-3D conversion box sends out a calibration pattern to the display device. Then, a shutter control signal is sent out after waiting a delay time to switch on and off the left and right lenses of the pair of shutter glasses. Subsequently, the calibration pattern is detected. Finally, determine whether the delay time must be adjusted or not according to the detecting result.

Abstract: A display control circuit includes a device driving unit that alternately writes a left video image and a right video image in a time-division manner to a light modulating device, a light source driving unit that increases or reduces the brightness of a light source that emits light passing through the light modulating device, a shutter eyeglass driving unit that provides shutter eyeglasses with a shutter driving signal, and a control unit that instructs the light source driving unit to reduce the brightness of the light source in the duration of a switchover between the left video image and the right video image for the light modulating device or instructs the light source driving unit to increase the brightness of the light source in the duration in which the left video image or the right video image is written solely to the light modulating device.

Abstract: 3D shutter glasses with a synchronization signal sent through a stereo headphone wire are presented. In some embodiments, the 3D shutter glasses receive a synchronization signal through the same wire that transmits audio data to headphones or other audio devices. The synchronization signal may be combined with the audio data through various techniques so as to not disrupt the audio a listener hears, but to still provide the data to the 3D shutter glasses to synchronize with a display.

Abstract: Systems and methods for concurrently displaying two different 2D video programs on a screen of a stereoscopic 3D-enabled video viewing system. A control unit switches active shutter glasses in synchrony with the display of frames on the display screen, such that both shutters are open when frames corresponding to a first program are displayed, and both shutters are closed when frames corresponding to a second program are displayed, so that a viewer wearing the glasses sees only the first program. For higher refresh rate displays, more than two different programs can be displayed concurrently by interleaving the display of frames from more than two programs. Multiple viewers, each with a pair of active shutter glasses, can each independently choose the program they wish to watch on the single display screen. This viewing mode may leverage the 3D broadcast content delivery chain, or alternatively use appropriately encoded video stored on DVD, hard disk, or other storage.

Abstract: Disclosed herein is an image processing apparatus, including: a projection section adapted to alternately project an image for a right eye and another image for a left eye; a separation section adapted to separate a projected image of the right eye image and another projected image of the left eye image from each other; a gaze detection section adapted to detect a gaze direction of an observer to which the right eye image and the left eye image are to be given; and a luminance adjustment section adapted to set a range with respect to the gaze direction to the right eye image and the left eye image and adjust a luminance value of pixels so that a portion of the right and left eye images other than the set range exhibits an invisible state.

Abstract: Systems and methods enable three dimensional (3-D) program content viewing in a media environment with different media presentation devices.

Abstract: An object of the present invention is to notify an observer who is wearing shutter glasses of information related to the remaining battery capacity or the like of the shutter glasses, through display of a stereoscopic image. To that end, shutter glasses (20) transmit internal information such as the remaining capacity of a battery (22) to a display apparatus (10). On the display apparatus (10) side, notification or warning of the remaining capacity is displayed on the screen by a display section (11). Of course, this notification or warning can be also presented as a time-division stereoscopic image. In such a case, the observer can check a state such as exhaustion of the battery (22) while keeping wearing the shutter glasses (20), that is, while viewing a stereoscopic image.

Abstract: A plurality of images are alternately switched and displayed on the screen in a very short cycle while preventing crosstalk between the images. Because a backlight 12 is lit on the liquid crystal display 10 side after a shutter mechanism on the shutter glasses 20 side has responded sufficiently, there is no adverse effect caused by lack of response at the time of rising of the shutter mechanism. Also, it is possible to raise peak brightness in comparison to the method of keeping the backlight 12 lit at all times, thereby enabling an improvement in brightness when displaying a stereoscopic image. On the other hand, a drop in the temperature of a liquid crystal display panel 11 following extinguishing of the backlight 12 becomes less, and so does deterioration of crosstalk.

Abstract: An image display apparatus comprise: a light source section; a light modulator that modulates light delivered from the light source section to display an image; a light level control section that adjusts the amount of light delivered from the light source section to the light modulator; and a display control section that updates the image displayed on the light modulator during a first period and a second period alternately switched therebetween. The display control section updated in the first period to a first image and a black image in this order and updates in the second period to a second image and the black image in this order. The light level control section sets the amount of light delivered from the light source section to be greater than that in other periods during a predetermined switching period including a point to switch between the first period and the second period.

Abstract: Apparatus for delivery of stereo 3D content, including a library manager for retrieving, from a digital library of stereo 3D content, a version of a requested item of stereo 3D content stored in the library, on demand, a receiver, coupled with the library manager, for receiving, from a target device, a request for a desired item of stereo 3D content stored in the library, and an identification of display properties and stereo 3D characteristics of the target device, an adaptation engine, coupled with the receiver and with the library manager, for adapting the version of the item of stereo 3D content retrieved by the library manager, to an adapted version, optimized for viewing on the target device, based on the display properties and stereo 3D characteristics of the target device, and a transmitter, coupled with the adaptation engine, for transmitting the adapted version of the item of stereo 3D content to the target device, for download or for streaming. A system and a method are also described and claimed.

Abstract: In one embodiment, there is provided a notification system. The system includes: a display apparatus; and one or more pairs of shutter glasses. The display apparatus includes: a display module configured to display a 3D picture; and a transmitter configured to transmit a control data to each of the pairs of shutter glasses, wherein the control data contains a shutter control data for controlling shutters of each of the pairs of shutter glasses. Each of the pairs of shutter glasses includes: a receiver configured to receive the control data containing shutter control data; a shutter controller configured to open and close the right eye shutter and the left eye shutter, based on the shutter control data; and a notification module configured to notify a warning when a specific period of time has elapsed after the receiver receives the control data.

Abstract: A normal three-dimensional image is presented to a person who is wearing glasses for three-dimensional image observation, and additional information including a message, disturbance information, or the like is presented to a person who is not wearing glasses for three-dimensional image observation. An image display apparatus displays, on a display unit, an image frame sequence in which additional information image frame including additional information is added between an image frame for the left eye and an image frame for the right eye. At a display timing of the additional information image frame for the display unit, the image display apparatus outputs a control signal that sets shutters for both the left and right eyes of glasses for three-dimensional image observation worn by an observer to a closed state.

Abstract: A display apparatus to display a three-dimensional image (3D) and a method of controlling the same, shutter glasses and a method of controlling the same, and a display system are provided. The shutter glasses include a lens which allows selective light transmission; a signal receiver which receives a first signal; a synchronization signal reconstruction unit which reconstructs a synchronization signal corresponding to a 3D display of the display apparatus through a correlation analysis on the received first signal; and a shutter driver which operates the lens corresponding to the synchronization signal reconstructed by the synchronization signal reconstruction unit.

Abstract: When an end portion of a three-dimensional image appears to pop forward from a display surface, a predetermined end area is set at a periphery of images forming the three-dimensional image to modify at least one of the images to modify the stereoscopic effect so that at least a part of the end portion appears to be level with the display surface. A disparity between corresponding pixels in the end area of the images is modified so that the disparity is gradually decreased toward the end of the images, and image parts at left and right areas of the end area of a reference image among the images are deformed based on the disparity. At least one of the images is modified by modifying the image other than the reference image with the deformed image parts of the end area. Then, three-dimensional processing is applied to the modified images.

Abstract: There are provided 3D image glasses which are ready for a plurality of methods (output patterns of a timing signal) different from one another and moreover which are adaptable for various types of 3D image display devices. A ROM 6 stores a plurality of output patterns, and a plurality of command signals corresponding to the output patterns. A microcomputer 5 selects from the ROM 6 an output pattern coincident with an output pattern of a timing signal received from the 3D image display device, and moreover, by a command signal of the selected output pattern, controls opening and closing of right-eye and left-eye liquid-crystal shutters in synchronization with the received timing signal.

Abstract: A display control device includes a separation unit that separates a multiplex image into a left eye image after decimation and a right eye image after decimation, interpolates a predetermined phase of the left eye image after the decimation with 0, and interpolates a phase reverse to the predetermined phase of the right eye image after the decimation with 0, a display control unit that uses an interpolated left eye image as a left eye display image, uses an interpolated right eye image as a right eye display image, and alternately displays the left eye display image and the right eye display image, and a glasses control unit that controls glasses such that a left eye shutter and a right eye shutter of the glasses are both opened, in a case where an image including the left eye image and the right eye image is a 2D image.

Abstract: An actively shuttered glasses synchronization signal generated by a 3D TV is detected by a device that has an output display. A periodicity of actuation of the actively shuttered glasses synchronization signal is determined. A display refresh rate of the output display is synchronized to the periodicity of actuation of the actively shuttered glasses synchronization signal. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.

Abstract: According to one embodiment, stereoscopic glasses include a first shutter, a second shutter, a receiver, and a controller. The first shutter allows or hinders left eye vision. The second shutter allows or hinders right eye vision. The receiver receives a first control signal to open or close the first shutter and a second control signal to open or close the second shutter from a display device that, in synchronization with display timing of a video signal for left eye and a video signal for right eye, displays the video signals. The controller controls the first shutter and the second shutter to open or close based on the first control signal and the second control signal, respectively, while switching between stereoscopic view mode and planar view mode depending on the distance to the display device.

Abstract: A three-dimensional (3D) image processing apparatus and a method of driving the same are provided. The 3D image processing apparatus includes: a display unit which alternately outputs a left eye image and a right eye image; a sync signal processing unit which generates a sync signal to alternately open a left eye shutter and a right eye shutter of 3D glasses in accordance with a timing of outputting the left eye image and the right eye image and transmits the generated sync signal to the 3D glasses; an On-Screen Display (OSD) processing unit which generates an OSD message; and a controlling unit which controls the display unit to output the OSD message between the left eye image and the right eye image so that the OSD message is not recognized when the 3D glasses are used. Accordingly, information regarding whether a 3D broadcast is being provided may be provided efficiently.

Abstract: A method displays an image only to an authorized user by generating a mask image from a data image. The data and mask image are then displayed periodically in an alternating manner on a display device by a select signal. The opening end shutting of an optical shutter device is synchronized to the displaying of the selected images so that only the data image is perceived by the authorized user viewing the display device through the optical shutter device, and a gray image is perceived by an unauthorized user viewing the data and mask images directly.