Abstract:
An input device that has controls on more than one side is disclosed. The user orients the input device such that the controls to he used are in a predetermined orientation. A sensor detects which controls are in the predetermined orientation and enables those controls.

Description:
FIELD OF THE INVENTION 
     The field of this invention relates to input devices and more specifically to an input device that has controls on more than one side. 
     BACKGROUND OF THE INVENTION 
     Controlling an electronic device is typically done using some type of input device. There may be more than one input device for some types of electronic devices. For example a computer has both a keyboard and a mouse. Most TV&#39;s have a remote control input device as well as controls on the front of the TV. Some input devices can control more than one electronic device. For example a universal remote control can control a TV, a VCR, the satellite dish, and even the surround sound. Unfortunately, controlling so many devices has its drawbacks. To be able to control so many devices there has to be a lot of different controls or keys on the input device. Some controls or keys are common to many of the different electronic devices, for example the on/off control. Some of the controls only apply to one of the electronic devices, for example the rewind key may only apply to the VCR. Because of the large number of controls, it is sometimes difficult to find the key the user wishes to use for the device the user wishes to control. For the user to have only the controls visible for the device they are controlling, they have to have multiple input devices, one for each electronic device they wish to control. Unfortunately that means they have to keep track of multiple input devices and switch input devices when they want to control a different electronic device. 
     For some electronic devices an expert user may want a different set of controls available than a novice user. For example, an expert user of a print kiosk may want controls available for adjusting the gamma of the image. A novice user would only be confused with the advanced controls. The novice user may only want the basic controls to select the size and number of prints. 
     There is a need for an input device that can present the appropriate controls to the user. 
     SUMMARY OF THE INVENTION 
     An input device that has controls on more than one side is disclosed. The user orients the input device such that the controls to be used are in a predetermined orientation. A sensor detects which controls are in the predetermined orientation and enables those controls. 
    
    
     Other aspects and advantages of the present invention will become apparent from the following detailed description, taken in conjunction with the accompanying drawings, illustrating by way of example the principles of the invention. 
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a side view of one example embodiment of the current invention. 
     FIG. 2A is an end view of another example embodiment of the current invention. 
     FIG. 2B is a projection view of the example embodiment frorn FIG.  2 A. 
     FIG. 3 is an end view of another example embodiment of the current invention. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     A typical input device has a face or side where controls are arranged. For example a keyboard has a top side where the keys are placed. The face or side may be a flat plane or the face may be curved. The keyboard typically has a bottom side or face configured to support the keyboard while resting on a surface. In this application a control and a key are used interchangeably to indicate a user control. A user control is a key, switch, or device that allows a user to input control information into a device. 
     In one example embodiment of the current invention, the input device would have controls on two sides or faces (see FIG.  1 ). The two sides would be opposite each other. When one side  102  is in an upward facing orientation the other side  104  would be in a downward facing orientation. The input device would contain a sensor  106  that could detect which side was facing upward. The input device would only enable the controls in the upward facing orientation. When the device was flipped over the other set of controls would become active and the first set of controls would become inactive. The orientation of a side can be described as its facing direction. The facing direction of a side is generally perpendicular to the plane containing the controls and extending outward from the device. Vector  110  is the facing direction for side  102 . 
     In one example embodiment, the sensor  106  would be a pressure switch mounted on one side of the device. When the sensor side was in the downward facing orientation the switch would be depressed indicating that the corresponding set of controls should be inactivated. When the sensor side was in the upward facing orientation, the switch would not be depressed indicating that the corresponding set of controls should be activated. In another example embodiment, the switch would be a gravity-activated switch (not shown), for example a mercury switch or solid-state accellerometer. The gravity-activated switch would be “on” when one face was in the generally downward facing orientation, and “off” when the face was in a generally upward facing orientation. In another embodiment the sensor could be a magnetic sensor (not shown). Magnetic sensors use the magnetic field of the earth to detect the orientation of the device. 
     In one example embodiment of the current invention the device would be configured to operate resting on a surface. For example the keys or controls would be recessed such that the device would not rest on the controls when the controls where in the downward facing orientation. In another example embodiment the device would be configured to rest on some or all of the controls in the downward facing orientation. 
     In one example embodiment, the input device would have more controls on one side than on the other side. For example the first side would contain a full set of controls, allowing access to all the features of the device being controlled. On the second face there would be a limited set of controls, allowing access to the basic functions of the device. 
     In one example embodiment of the current invention the device would be configured to operate as a hand held device, for example a remote control. In this embodiment the controls on one face would be for controlling a first device. The controls on a second face would be for controlling a second device. For example, the controls on one face would be for a TV, and the controls on another face would be for controlling a VCR. In this example embodiment, there may be controls on more than 2 sides or faces. FIG. 2A shows a rectangular device that has controls on 3 sides of the device. A sensor in the device would detect which of the 3 sides is in a predetermined orientation, for example which side was facing upward. The upward facing controls would be enabled. The controls on the non-upward facing sides would be disabled. When the user rotated the device along axis  204 , a new set of controls would become the upward facing controls and the newly oriented controls would be activated. In this example embodiment the device may be shapes other than rectangular. For example, there may be 6 faces with controls plus a front end and a back end (see FIG.  3 ). In one example embodiment of the current invention, an indicator would be located on each face, for example a light. The indicator would signal when the controls oh the face where active. For example, the light would be lit on the face when the controls on that face where active. The lights on the other faces would not be lit. This would help the user determine when the controls on each face or side become active. 
     In the hand held configuration, the sensor may be configured to be more sensitive to rotation in one axis than in another axis. For example, when the user rotated the device along axis  204 , the determination of which face is in the upward orientation may occur after a rotation of 45 degrees. When the user rotated the device around axis  206 , the device may not switch active faces until after a 90-degree rotation. This allows the user freedom to point the input device at different heights in a room without affecting which set of controls are active. In this application axis  204  will be defined as the y-axis and axis  206  will be defined as the x-axis. Axis  204  is the axis generally parallel to the sides containing the controls. 
     The foregoing description of the present invention has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed, and other modifications and variations may be possible in light of the above teachings. The embodiment was chosen and described in order to best explain the principles of the invention and its practical application to thereby enable others skilled in the art to best utilize the invention in various embodiments and various modifications as are suited to the particular use contemplated. It is intended that the appended claims be construed to include other alternative embodiments of the invention except insofar as limited by the prior art.