Abstract:
A display system is disclosed. The display system includes a processor. The display system also includes a first display device having a first display surface and receiving display data from the processor. The display system also includes a second displayed device having a display area smaller then the first display device and moveable over the surface of the first display device. The display system also includes a sensor in communication with the processor and communicating location data to the processor. The location data is representative of the relative location of the first display to the second display. Further still, the display system includes a program running on the processor and providing display data to the first and second display devices. The display data is provided to the second display device based on the location data.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of U.S. patent application Ser. No. 09/997,382, filed Nov. 29, 2001, U.S. Pat. No. 6,710,754, which is incorporated herein by reference in its entirety. 
    
    
     BACKGROUND 
     The present invention relates generally to the field of output devices. In particular, the invention relates to output devices and/or input and output devices that may be moved over a large display and provide output related to images on the large display. Further, the invention relates to apparatuses and methods for providing enhanced images and/or other types of input and/or output using moveable devices on a planar display screen. 
     Liquid crystal display monitors have conventionally been used to produce images for computers and handheld computers. As the need for displays to provide a large amount of information to users has grown, large form factor displays have become more desirable in certain situations. However, as large form factor flexible, semi-flexible, or rigid displays become more commonplace, providing the resources to refresh or support such a display may burden both the processor and the power source, especially for small portable devices in which such resources are limited. 
     Accordingly, there is a need for portable and/or other computing devices that use large form factor flexible, rigid or semi-flexible displays to be used in conjunction with a moveable auxiliary input and output device that may be moveable over the surface of the display. There is also a need for a large planar display device that is capable of displaying a two-dimensional image on a first plane or surface and allowing images and/or input/output based on the location of a smaller moveable input and/or output device that is moveable over the surface of the display. 
     It would therefore be desirable to provide a system and/or method that provides one or more of these or other advantageous features. Other features and advantages will be made apparent from the present specification. The teachings disclosed extend to those embodiments which fall within the scope of the appended claims, regardless of whether they accomplish one or more of the above-mentioned needs. 
     SUMMARY 
     An exemplary embodiment of the invention relates to a display system. The display system includes a processor. The display system also includes a first display device having a first display surface and receiving display data from the processor. The display system also includes a second display device having a display area smaller then the first display device and moveable over the surface of the first display device. Further, the display system includes a sensor in communication with the processor and communicating location data to the processor. The location data is representative of the relative location of the first display to the second display. Further still, the display system includes a program running on the processor and providing display data to the first and second display devices, such that the display data provided to the second display device is based on the location data. 
     Another exemplary embodiment of the invention relates to a method of providing information to a display system user. The method includes providing a first image on a first display. The method also includes detecting the location of a second display relative to the first display. Further, the method includes providing data to the second display based on the detected location of the second display. Further still, the method includes generating a second image on the second display, with the second image generated from the data provided to the second display to provide at least one of enhanced display of a portion of the first image, solicitation for input, and additional output not provided in the first image. 
     A further exemplary embodiment of the invention relates to a moveable output device configured for movement across a primary display surface. The primary display is in communication with a processing device. The moveable output device includes a device housing supporting at least one of a visual display, an audio device and a tactile feedback device, the device housing supporting a processor. The moveable output device also includes a wireless communications device receiving output data from the processing device. The output data is based on location data from a location sensor sensing the relative location of the device housing and the primary display surface. The output device generates an output based on the output data. A user of the output device receives an enhanced output as compared with the primary display output. 
     Alternative exemplary embodiments relate to other features and combination of features as may be generally recited in the claims. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The invention will become fully understood from the following detailed description, taken in conjunction with the accompanying drawings, wherein like reference numerals refer to like elements, in which: 
         FIG. 1  is a generalized diagram of a moveable output device providing output to a user based on the location of the output device relative to the larger display screen; 
         FIG. 2  is a generalized block diagram of a primary display device including electronics generating an image and a wireless output device moveable over the primary display device; and 
         FIG. 3  is a process diagram of steps relating to providing output to a user of a moveable output device. 
     
    
    
     DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS 
     A moveable output device is described below. The moveable output device is capable of providing a user with output data relating to information displayed on a primary display. 
     Referring now to  FIG. 1 , a display system  100  is depicted. Display system  100  includes a flat-screen display  110  having a relatively large display area. Display  110  may be any of a variety of electronic display devices, including, but not limited to, cathode ray tube (CRT) devices, liquid crystal display (LCD) devices, thin film transistor (TFT) devices, active matrix devices, organic light emitting diode (OLED) devices, organic electroluminescent (OEL) devices, electronic paper devices (e-paper) (such as elnk, Smart Paper™ by Gyricon Media, APD™ by Citala, etc.), and the like. As depicted in  FIG. 1  an exemplary embodiment of system  100  may include display  110  that may be a foldable display or flexible display, as indicated by fold lines  115 . Images displayed on display  110  are driven by a processing device  410  depicted in  FIG. 2 . In a particularly preferred embodiment, display  110  may be a foldable display that is detachable from a processing unit such as processing unit  410 . Also, processing unit  410  may be, but it not limited to, a portable electronic device such as a handheld computer. Display  110  is configured to provide an image or images across substantially the entire planar surface of display  110 , providing a relatively large display area. An output device or unit  120  is moveable over display  110  in any of a variety of directions indicated by directional arrows  125 . Accordingly, output device  120  may be moved to any position on display  110 . 
     In a particularly preferred embodiment, output device  120  includes a display surface and/or display window  130 . Display window  130  may be any of a variety of display devices, such as, but not limited to, an LCD device, or any of a variety of other devices in which pixels of the image may be manipulated by electronic means in one surface of the device and light may be transmitted through window  130  to and from display  110 . In an alternative embodiment, display window  130  need not be a transparent or translucent display, but may be a stand alone display having its own light source. 
     In an exemplary embodiment, images may be provided on display  110 . Output device  120  includes a location sensor  135  (see  FIG. 2 ) which provides a relative location signal to processing unit  410 . The relative location signal is representative of the relative location of device  120  on display  110 . The relative location signal sent to processing unit  410  may also include an orientation signal which provides the relative orientation of output device  120  on display  110 . 
     When processing unit  410  receives the location signal, processing unit  410  is then aware of the image on display  110  that is being covered by window  130 . Given information that window  130  is covering a specific image or portion of display  110 , processing unit  410  is configured, via computer software, to generate complementary output to be displayed in window  130 . In an exemplary embodiment, complementary output provided to window  130  may include, but is not limited to, complementary images providing additional or more detailed information than that which is displayed on display  110 , an updated image that has been updated more recently than the image on display  110 , an enhanced image (including localized color, improved lighting, localized display resolution, alternative fonts, magnification, additional color depth, additional color options), input options (buttons, menus, etc.), textual information, tactile feedback, etc. Data which is used to generate the image in window  130  is communicated to device  120  by any of a variety of means including, but not limited to, a wireless radio frequency link between device  120  and processing unit  410  via transceiver  136  in device  120  and a transceiver  420  in processing unit  410 . In an alternative embodiment, communication may be made by a wired link instead of a wireless link. 
     Referring again to  FIG. 1 , in an exemplary embodiment, a set of buttons or other input devices  137  may be utilized on device  120  to provide input to device  120 . Buttons  137  may be used to zoom in and out of window area  130 , causing an enlargement or shrinkage of an image  133 . Further, buttons  137  may also be used to provide an orientation signal such that image  133  may be rotated and/or the orientation of image  133  may be affected. Further, buttons  137  may be used for a variety of other functions relating to accessing data or manipulating images, etc. 
     Referring now to  FIG. 2 , a block diagram of system  100  is depicted in  FIG. 2 . As discussed earlier, primary display  110  may be a large area display having disposed upon its surface an output device  120  having a display window  130  and further including a location sensor  135  and transceiver  136 . Transceiver  136  is configured to communicate data between processing unit  410  via transceiver  420 . Processing unit  410  includes a processor  430  coupled to a memory  440 . Processor  430  is also coupled to a display controller  460  which may control both displays  110  and device  120  which use display drivers  111  and  121  respectively. Communications to primary display  110  may be provided through a signal bus  450  or other communications connections. Further, primary display  110  may be communicated with via transceiver  420 . In a particular exemplary embodiment, display  120  may include its own co-processor  122  and memory  123 . 
     Referring now to  FIG. 3 , a process  500  is depicted. Process  500  utilizes the apparatuses described above and depicted in  FIGS. 1 and 2 . An image is generated on primary display device  110  (step  510 ). A user moves output device  120  to an appropriate position and activates the device. The location of output device  120  is then detected by sensors on either primary display  110  or on output device  120  or any combination thereof (step  520 ). After the location of output device  120  has been established and communicated to processing unit  410 , processing unit  410  generates output data that is communicated to output device  120  and is based on the detected location of output device  120  (step  530 ). Output device  120  then provides output to a user of device  120 . In a further exemplary embodiment, a user may provide input to device  120  via any of a variety of input methods, including but not limited to, tapping buttons  155  and/or  156  or the like, or via a touch screen interface associated with window  130 . Input to device  120  may be provided by other means including buttons  137 , voice input, movement of device  120 , etc. 
     In an exemplary embodiment it should be noted that device  120  may be used for a variety of applications. For example, display  110  may have an outdated image on it. Device  110  may have an intentional low refresh rate to save both processing power and battery power on the host device or on display  110 . As device  120  is moved over certain regions of display  110 , those areas may be refreshed and/or a refreshed display may be provided in window  130 . In another exemplary embodiment, window  130  would provide resolution enhancement of the region of display  110  which window  130  covers. For example, display  110  may be a monochrome display and device  120  may provide localized color. Further, display  110  may be a color display having a relatively low color depth (for example, 8-bit color). Device  120  may be used to provide additional color depth, such as, but not limited to 16-bit, 32-bit 64-bit color, etc. Another example of resolution enhancement that may be provided by window  130  may be the availability and use of alternative fonts, magnified text, magnified graphics, higher screen resolution, and the like. Further, additional textual information may be displayed. For example, display  110  may display information in a foreign language. Device  120  may then act as a translator and provide translated text into a user&#39;s native language the information being covered by device  120 . Further, device  120  may be used to extract embedded information. As an example, a map may be displayed on display  110 . The map view on display  110  may be fairly coarse, but in window  130 , additional information may be provided such as, but not limited to local streets, house numbers, telephone numbers, zip codes, or the like. Further, places of interest may be provided and textual information relating to such places of interest may also be provided. 
     In an exemplary embodiment, display  110  may provide a limited lighting system. Device  120  may provide further illumination via a front or side light or the like such that information being covered by window  130  may be visualized using lighted display  130 . 
     In a further exemplary embodiment, device  120  may include electronic muscle material that is controlled to expand and contract on the surface of device  120 . If device  120  is required to provide buttons, for example, to a user, the electronic muscle material may be used to form buttons  155  and  156  that protrude from the surface of window  130 . Electronic muscle is a gel-like polymer that is able to convert electrical energy to mechanical energy and conversely, mechanical energy to electrical energy when it is expanded and contracted. By sensing the charge distribution across the material, the materials surface profile or contour. Further, by altering the charge distribution material, its surface profile can be altered. Alterations may be performed on localized portions of the material to provide such contours as buttons  155  and  156 . Utilizing controllable electronic muscle provides a user with tactical feedback. Further, other types of tactile feedback may be utilized in response to the location of device  120  on display  110 , such tactical feedback including, but not limited to, vibrating, heating, cooling, expanding, contracting, moving, and the like. 
     In another exemplary embodiment, device  120  may be utilized for entertainment purposes, such as playing games. For example, device  120  may be used to play games, such as, but not limited to, the classic game of concentration, in which on areas of display  110  are hidden certain objects or pictures. As display  120  is moved over such hidden objects, the objects may be displayed. The object of the game is then to match found objects with objects located elsewhere on the display screen which a user of output device  120  was required to recall the location of from the user&#39;s memory. Further, other types of games may be contemplated and effectuated by the use of device  120 . 
     While the detailed drawings, specific examples and particular formulations given describe preferred and exemplary embodiments, they serve the purpose of illustration only. The inventions disclosed are not limited to the specific forms shown. For example, the methods may be performed in any of a variety of sequence of steps. The hardware and software configurations shown and described may differ depending on the chosen performance characteristics and physician characteristics of the computing devices. For example, the type of computing device, communications bus, or processor used may differ. The systems and methods depicted and described are not limited to the precise details and conditions disclosed. Furthermore, other substitutions, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the invention as expressed in the appended claims.