Patent Application
20120038823
1. Field of the Invention
The invention relates to a display system, and more particularly, to a display system using multiplied display frequency and frame interchanging technology that can provide more than one media source for two or more users at the same time.
2. Description of the Prior Art
Display systems like TVs, projectors, various kinds of portable devices, can only broadcast one media source at one time based on the conventional display technology. As for follow-up advancement of display technology, picture-in-picture (PIP), where a first program is displayed on a full TV screen and one or more second programs are displayed in inset windows at the same time, or the screen being simply divided into two same-size pictures, often called picture-outside-picture (POP), are invented to provide multiple media sources at the same time. However, the display area of each media source is inevitably reduced to quite an extent for either PIP or POP.
Another technology called “Dual View” is provided presently to provide dual image for exactly two users at the same time, requiring the two users being positioned at two specified angles respectively relative to the display system. With regard to Dual View technology, an additional blocking component must be configured in the display system. Two separate frames from each of the media sources are mixed to form a dual image frame, half-sized in pixels for each frame of the dual image, that is partially blocked by the blocking component so that each user at his/her particular angle is only able to see the corresponding media source. This gives some drawbacks of the Dual View technology: for example, the resolution of each media decreases to its half, only two sources can be provided at the same time, and each media is viewable only with strict angle.
The application provides a display system including a broadcast device and a plurality of receiving devices. The broadcast device is utilized for receiving a plurality of media signals from a plurality of media sources and including a processor and a panel. The plurality of media signals from the plurality of media sources are received by the processor and interlaced frame-by-frame by the processor to form a display signal and the panel is utilized for displaying the display signal at a first frequency. Each receiving device includes a goggle for viewing the display signal at a second frequency, and a synchronizing device for controlling the goggle to turn on to view the display signal in synchronous with a media signal selected from the plurality of media sources. The first frequency is n times the second frequency and n equals to a number of the plurality of media signals being interlaced by the processor.
The application also provides a broadcast device. The broadcast device includes a processor and a panel. A plurality of media signals from a plurality of media sources are received by the processor and interlaced frame-by-frame by the processor to form a display signal and the panel is utilized for displaying the display signal. The plurality of media signals received by the processor are from at least two different media sources.
These and other objectives of the present invention will no doubt become obvious to those of ordinary skill in the art after reading the following detailed description of the preferred embodiment that is illustrated in the various figures and drawings.
Please refer to
The broadcast device 1 includes many kinds of importing ports for receiving a plurality of media signals from a plurality of media sources. A preferred embodiment as illustrated in
The broadcast device 1 also includes a time control (T-con) component 60 for controlling the display signal generated by the processor 10 to display on a panel 40 of the broadcast device 1 at a multiplied frequency.
For effectively broadcasting each separate media signal to each separate user from corresponding media source selected by each user, each receiving device includes a synchronizing device that controls the goggle to synchronize with the broadcast device 1 at a specific timing. Take the receiving device 70 for example. The receiving device 70 includes a goggle 71, which is preferably a shutter glass that can be controlled to turn on to allow lights to pass through or turned off to block lights away. The synchronizing device 72 is a wireless receiver, preferably an RF receiver, having control circuit that can receive RF signals and also control the goggle 71. The receiving device 70 also includes a selector 73, practically a remote controller (RC), that can be used by a user to select a media source from the plurality of media sources as mentioned above by transmitting a control signal to the processor 10 of the broadcast device 1, and the processor 10 then receives and processes the media signals of the selected media source according to the control signal. The selector 73 may also provide function of channel selection when the media source selected is a TV program. Once a media source is selected by the selector 73, the processor 10 also generates a synchronizing signal and a wireless transmitter 30, preferably an RF module, transmits the synchronizing signal to the synchronizing device 72 so as to control the goggle 71 to turn on and off at a specific frequency and timing in synchronous with the timing that displays the selected media signals by the panel 40.
Since only the timing of the selected media signals selected by the selector 73 of the receiving device 70 and displayed on the panel 40 is in synchronous with the timing of turning on of the goggle 71, the user who wears the goggle 71 can only see the selected media signals, not being able to see those media signals broadcast by the panel 40 but selected by other selectors.
For audio playback concern, the processor 10 also includes an audio decoder 11 for decoding and processing audio signals received from each media signal of the media sources. The broadcast device 1 utilizes an audio amplifier 50 to broadcast each decoded audio signal in separate channel, say a 1st channel, a 2nd channel, . . . , and an Nth channel, each received by its corresponding audio playback component 74, 84, 94 respectively and in synchronous with the media signal selected from the media sources. The audio playback components 74, 84, 94 of the receiving devices 70, 80, 90 are preferably headset earphones that can provide isolated listening condition for each user and the connection between the audio amplifier 50 and each audio playback component 74, 84, 94 can be wireless connected or physically connected. The receiving devices 80, 90 have similar structure and function as the receiving device 70.
Please refer to
As mentioned above, each goggle is controlled by a corresponding synchronizing device. When the panel 40 displays the first frame Al at a first time slot ( 1/180s), the first synchronizing device 72 turns on the first goggle 71 for 1/180 second, a shorter interval as mentioned before, so that the user who wears the first goggle 71 sees the first frame Al through the goggle 71, while at the same time interval, all the other users who wear the goggles 81, . . . , 91 can not see the first frame Al since their goggles 81, . . . , 91 are turned off by their synchronizing devices. When the panel 40 displays the second frame B1 at a second time slot ( 1/180s), the second synchronizing device 82 turns on the second goggle 81 for 1/180 second so that the user who wears the second goggle 81 sees the second frame B1 through the goggle 81. All the frames of the display signal 500 are displayed on the panel 40 and each goggle of the receiving devices is turned on in synchronous with the display timing of its corresponding media signal. Users wearing their own goggles can see different programs from different media sources at the same time by use of the display system disclosed in this application.
The display system of this application uses a broadcast device that can receive media signals from a plurality of media sources and interlace two or more media signals frame-by-frame to form a display signal with multiplied frequency for being displayed on its panel. A plurality of goggles and corresponding synchronizing devices, selectors, and audio playback components are used in the display system to select each dedicated media signals. Each goggle used by each user is synchronized to turn on by following the timing of its selected media signals so that two or more users who wear a dedicated goggle can see different programs on a single broadcast device at the same time.
Those skilled in the art will readily observe that numerous modifications and alterations of the device and method may be made while retaining the teachings of the invention.
