Abstract:
One embodiment of the invention is an imaging device comprising an illuminated reference locator that comprises an illuminated surface that identifies an input location that receives an object to be imaged by the imaging device.

Description:
FIELD OF THE INVENTION  
         [0001]    This invention relates in general to imaging devices and in specific to an apparatus and method for providing an input reference location.  
         DESCRIPTION OF THE RELATED ART  
         [0002]    Imaging devices, e.g. computers, facsimile devices, scanners, and/or photocopiers, typically receive an input that comprises a paper document. The paper document, medium, or object is then imaged, e.g., scanned, by the device and converted into a digital representation of the paper document. The digital representation may then be processed by the device. Note that a paper document may comprise text data and/or image data.  
           [0003]    A critical element of the scanning is the proper alignment of the paper document in the device. Improper alignment may cause a mis-scan of the document, or may cause a jam or other malfunction of the device.  
           [0004]    To prevent this problem, imaging devices typically include reference locators to mark the placement positions for the paper document. Multiple reference locators are often used to indicate the proper positions for different sizes of paper (e.g., 8½ by 11, A4), as well as different orientations of paper (e.g., portrait or landscape). Such locators are typically molded into the case or cover of the device or painted onto the device.  
           [0005]    However, molded locators are the same color as the case, and thus are often overlooked by the user. Similarly, painted locators will often wear off or be marked over, and thus overlooked by the user.  
           [0006]    Imaging devices also typically include a screen, e.g., LCD screen, that provides diagnostic messages to a user. The screen may be a full-size screen or a smaller screen such as a 5-line screen. These types of screens provide detailed text or graphic based images that describe an error or problem to a user. The screen may instead be an even smaller screen, e.g. a 2 or 3 character screen, that provides an alphanumeric error code to a user. The user may then consult a manual or reference card to determine to which problem the alphanumeric error code text or graphic refers. Alternatively the user may contact support personnel and relay the alphanumeric error code text or graphic to them. These screens are very useful in diagnosing problems with the device, but are relatively costly in terms of the parts needed, as well as their assembly into the device.  
         BRIEF SUMMARY OF THE INVENTION  
         [0007]    One embodiment of the invention is an imaging device comprising an illuminated reference locator that comprises an illuminated surface that identifies an input location that receives an object to be imaged by the imaging device.  
           [0008]    Another embodiment of the invention is a system for scanning an object to form a representation of the object, comprising an illuminated reference locator that identifies an input location of the system; wherein the input location receives the object.  
           [0009]    A further embodiment of the invention is a system for scanning an object to form a representation of the object, comprising means for identifying an input location on the device, wherein the input location receives the object, and means for illuminating the means for identifying.  
           [0010]    A further embodiment of the invention is a method for scanning comprising an illuminated reference locator, aligning an object using the illuminated reference locator, and scanning the object. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0011]    [0011]FIG. 1 depicts a first embodiment providing input reference location consideration with the teachings of the invention;  
         [0012]    [0012]FIGS. 2A and 2B depict further embodiments consistent with the teachings of the invention;  
         [0013]    [0013]FIG. 3 depicts an example of a system for use with the embodiments of FIGS. 1, 2A and  2 B;  
         [0014]    [0014]FIGS. 4A and 4B depict examples of error code identification according to embodiments of the invention;  
         [0015]    [0015]FIGS. 5A, 5B,  5 C, and  5 D depict alternative embodiments for reference locators according to the invention;  
         [0016]    [0016]FIG. 6 depicts an example of a device having a plurality of reference locators according to an embodiment of the invention; and  
         [0017]    [0017]FIG. 7 depicts an example of a method of scanning according to embodiments of the invention. 
     
    
     DETAILED DESCRIPTION  
       [0018]    Embodiments of the invention provide at least one illuminated reference locator to mark at least one placement position for an input to an imaging device. The device may comprise a computer, a facsimile device, a scanner, multi-function device, and/or a photocopier. The input may comprise paper document(s), medium, media, or other objects, such as text, images, three-dimension objects, or any other object that can be scanned or connected into a digital image that includes text and/or image data. Embodiments of the invention may also provide error codes for diagnostic purposes by having the illuminated reference locator flash a predetermined number of times and/or in a predetermined sequence.  
         [0019]    The illuminated reference locator(s) disclosed herein may each comprise at least one light source, e.g. a light emitting diode (LED) light, florescent lamp, or an incandescent light bulb. The illuminated reference locator may alternatively comprise a translucent portion of the case of the device, which is then illuminated by a light source such as a scanning lamp of the device. This embodiment is preferred when the device is equipped with such a scanning lamp and the initial position of the scanning lamp is located beneath the translucent portion of the case. Note that error codes may be generated by flashing the light source or the scanning lamp.  
         [0020]    [0020]FIG. 1 depicts an example of an embodiment comprising an imaging device  12 . Device  12  may be a computer, facsimile device, scanner, and/or photocopier. Device  12  includes scanning surface  13  that would receive an input, e.g. a paper document or other object. The input is then scanned by the device and converted into a representation of the input, e.g. a digital image or xerographic image. The device may then perform further processing of the digital representation or conclude after the conversion.  
         [0021]    Reference locator  11  is preferably used by a user to properly align an object on the scanning surface  13 . Note that number and placement of the reference locator is by way of example only as additional locators may be present on device  12 , and/or the locator(s) may be in different positions on the device  12 . In this embodiment, the reference locator  11  is preferably illuminated by a light source, for example a light emitting diode (LED) or an incandescent light bulb. This light source may be wired to be always on when the system  10  is powered on. Alternatively, the light source may be on when the system is ready to operate (as opposed to a warm up or wait state).  
         [0022]    Further note that the triangular shape of the locator  11  is by way of example only as other shapes could be used. For example, FIGS.  5 A- 5 D depict locators having a geometric shape, e.g., diamond or parallelogram shape  51 , a circular shape  52 , a teardrop shape  53 , and an elliptical shape  54 . Other shapes could include a polygon, a square, a rectangle, and a trapezoid (not shown). The reference locator may also comprise a text (e.g. ‘here’) or a graphic (e.g. a pointing hand, an arrow, or an ‘x’). The text or graphic could comprise illuminated text or graphic, or the text or graph could be dark with an illuminated background. Note that the different reference locators may be used for all of the embodiments of the invention described herein.  
         [0023]    [0023]FIG. 2A depicts another embodiment of the invention. In this embodiment, system  20  comprises scanning lamp  21  that is used to illuminate a translucent reference locator. For example, in scanners, the scanning lamp is typically a cold-cathode fluorescent lamp  21  that is part of a lamp assembly  22 , which moves relative to surface  13  to illuminate an object for scanning. In this example, the lamp assembly  22  is in its ‘home’ or ready-to-scan position. The reference locator is located directly above the lamp  21 , when the lamp assembly is in the home position. Thus, light from the lamp  21  may be used to illuminate the reference locator. The lamp assembly is presumed to be in its home position while a user would be loading the object. The lamp assembly would move from its home position during scanning, which would occur after loading has been completed. Translucent is meant to include clear, color-filtered, and diffuse light.  
         [0024]    The reference locator may be formed by placing a piece of material over a hole in the case or housing of the device  12 . The material may comprise plastic and may be snapped into place in the hole. The reference locator may also be formed by having a portion of the housing be molded or shaped to be relatively thin in thickness. Note that relatively thin is as compared to other portions of the housing. The portion forming the reference locator would be thin enough to be translucent or transparent to the light from the lamp. The other portions of the housing would be thick enough to be more opaque to the light from the lamp (but not necessarily fully opaque) as compared to the thin portion.  
         [0025]    The translucent reference locator may be colored a different color than that of the housing. For example, the housing may be white and the reference locator may be red or green. Alternatively, the reference locator may be the same color as the housing, for example where the reference locator is a relatively thin portion of the housing. Note that the coloring of the reference locators applies to all of the embodiments of the invention described herein.  
         [0026]    [0026]FIG. 2B depicts an alternative arrangement  23  for the example of FIG. 2A. In this example, the reference locator  11  is located away from the home position of the lamp assembly  22 . A light guide  24 , e.g. a fiber optic or light pipe, is used to deliver the light from the lamp  21  to the reference locator  11 . Note that the light guide may move with the assembly, thus keeping the reference locator illuminated as long as the lamp is on, or the light guide may be fixed, and thus only illuminate the reference locator while the lamp assembly is at the home position. Note that a moveable light guide may be used with the system of FIG. 2A to keep the reference locator illuminated as long as the lamp is on.  
         [0027]    Note that the devices may have more than one illuminated reference locator. For example, as shown in FIG. 6, system  60  comprises a device  12  having a plurality of reference locators. The different locators could be used to indicate different alignment positions for different objects to be scanned. For example, locator  61  could indicate the initial position for most objects. Locators  62   a,    62   b  could indicate the boundaries of a 4×6 inch picture. Locators  63   a,    63   b  could indicate the boundaries for an A4-sized document. Locators  64   a,    64   b  could indicate the boundaries for an {fraction (8/2)}×11 inch document. Locator  65  could indicate placement of a book for separately scanning each page. Note that the different sets of locators have been shown having different shapes, however common shapes could have been used, in some embodiments with different colors. Further note that the different locators could have different colors as well.  
         [0028]    Embodiments of the reference indicator may also be used to identify one or more error codes that are representative of the error(s) that the device has experienced. System  30  of FIG. 3 could be used to control the scanning lamp or the light bulb(s) to cause the reference indicator to flash, blink, or turn on and off to identify the appropriate error code. Lamp controller  31  would be connected to the scanning lamp  33  or to each light  33 ,  34  used to illuminate the reference indicator(s). The lamp controller  31  is connected to device controller  32 . The device controller notifies the lamp controller of errors and their type. Note if a plurality of reference indicators are used in the system, at least one may be used to indicate the error code. Only those lights used to illuminate the reference indicators that are used to indicate the error code are connected to lamp controller  31 .  
         [0029]    The reference indicator may be flashed to indicate an error code. The reference indicator may be flashed a specific number of times to indicate an error code. For example, the number of times that the indicator is flashed may define an error code, e.g. the indicator flashes 15 times, indicating an error corresponding to error code  15 .  
         [0030]    Another example, is shown in FIG. 4A, wherein the reference indicator is on during normal operations  402 . After an error is received, or after the device is placed in diagnostic mode by a user, the reference indicator begins flashing. Three flashes  403 ,  404 ,  405  are followed by an off period indicating the next number  406 . One flash  407  then follows. The reference indicator may then return to normal operations  402 , repeat the number sequence  403 - 407 , or then turn off  408 . The error code is noted to be  31 , for three flashes one flash. A user (or technical support personnel) could then look up error code  31  to determine the problem with the device and/or a corrective course of action.  
         [0031]    The reference indicator may also flash a specific sequence to indicate an error code (e.g., Morse code). For example, as shown in FIG. 4B, the reference indicator is on during normal operations  402 . After an error is received, or after the device is placed in diagnostic mode by a user, the reference indicator turns off to indicate that an error code will follow  409 . Flashing pattern  410  is then provided by the reference indicator. The flashing pattern  410  comprises a series of long and short on periods, as well as long and short off periods. The reference indicator may then return to normal operations  402 , repeat the pattern  410 , or then turn off  408 . A user (or technical support personnel) could then look up the pattern to determine the problem with the device and/or a corrective course of action. The reference indicator may also be used to signal the status of the system. For example, it could indicate a ready status, an error status, a warm-up status, and/or an in-process status. For example, the different statuses could be indicated by flashing different indicators or by having an indicator flash different colors, e.g., red for error, green for ready, yellow for warm-up, etc.