Abstract:
A camera phone and photographing method for a camera phone is provided which allows a camera phone to easily and precisely set a composition of a subject to be photographed. If a standard, preset composition guideline is not appropriate for a particular subject to be photographed, a user may select from a plurality of additional composition guidelines stored in a memory portion of the camera phone. These selections may be altered to select a particular subject by varying characteristics such as type, shape, and color, and may be further altered by adjusting coordinate values of the related composition guideline to further suit the particular subject to be photographed. This camera phone and photographing method provide enhanced precision and ease of use when both photographing with a camera phone and editing using various computer-related tools.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The invention relates to a camera phone, and more particularly, to a photographing method for a camera phone. 
     2. Background of the Related Art 
     In general, a camera is designed to focus on a subject to be photographed and then photograph the subject. Due to advances in technology, the industry has gone from a camera that photographs a subject and records the photographed subject on a film, which may then be developed to produce prints, to a digital camera that records a photographed subject as data in a memory, from which the stored data may be stored, edited, and printed using a PC (Personal Computer). 
     More recently, a camera phone has been developed. That is, a camera is attached to a mobile communication terminal, or installed in the mobile communication terminal itself In either instance, the camera phone allows a user to easily carry a camera, and photograph a subject anytime and anywhere. Hereinafter, a photographing method for a conventional art camera phone will be described. 
     In order to set up a composition of a subject to be photographed, a user must first set up a rough composition. In a conventional art camera phone, this is done by moving the camera phone to and fro. The camera photographs the subject displayed on a display unit of the camera phone according to a set up composition, and stores the photographed subject in a memory in the camera phone. Thereafter, the user edits the stored file using a PC (Personal Computer). 
     However, the conventional art camera phone has at least the following problems. In the conventional art camera phone, it takes a long time to set up a composition of a subject because the user must move the camera phone to and fro in order to set up the composition of the subject. Thus, it is difficult to set up a composition of a subject. Additionally, it is difficult and takes a long time to edit a photograph of a subject, which has been taken with a conventional art camera phone, using, for example, a graphic tool associated with a PC. 
     A mobile communication terminal in accordance with the conventional art is described in detail in U.S. Pat. No. 6,148,215 issued on Nov. 14, 2000 and U.S. Pat. No. 6,317,614 issued on Nov. 13, 2001. These references are incorporated by reference herein where appropriate for appropriate teachings of additional or alternative details, features and/or technical background. 
     SUMMARY OF THE INVENTION 
     An object of the invention is to solve at least one or more of the above problems and/or disadvantages in whole or in part and to provide at least the advantages described hereinafter. 
     To achieve at least the above objects, in whole or in part, and in accordance with the purposes of the invention, as embodied and broadly described herein, a method is provided in accordance with embodiments of the invention that includes displaying a composition guideline on a display unit of a device and photographing a subject through the displayed composition guideline. 
     To further achieve at least the above objects, in whole or in part, in accordance with the purposes of the invention, as embodiment and broadly described, a camera according to embodiments of the invention is provided that includes means for displaying a composition guideline on a display unit of the camera and means for photographing a subject through the displayed composition guideline. 
     To further achieve at least the above objects, in whole or in part, in accordance with the purposes of the invention, as embodiment and broadly described, a camera according to embodiments of the invention is provided that includes a body, a display unit provided on the body and configured to display a composition guideline and a camera unit provided on the main body and configured to photograph a subject through the composition guideline. 
     Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objects and advantages of the invention may be realized and attained as particularly pointed out in the appended claims. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The invention will be described in detail with reference to the following drawings in which like reference numerals refer to like elements wherein: 
         FIG. 1  is a schematic perspective view of a camera phone to which a photographing method for a camera phone in accordance with an embodiment of the invention is applied; 
         FIG. 2  is a flow chart of a photographing method in accordance with an embodiment of the invention; 
         FIGS. 3A–3D  are exemplary views showing images photographed using a photographing method for a camera phone in accordance with an embodiment of the invention; 
         FIGS. 4A–4F  are exemplary views showing a variety of composition guidelines in accordance with embodiments of the invention; 
         FIGS. 5A–5C  are views showing coordinate values of composition guidelines displayed on a display unit of a camera phone in accordance with embodiments of the invention; and 
         FIGS. 6A–6B  are exemplary views showing changes in coordinate values of composition guidelines in accordance with embodiments of the invention. 
     
    
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 
     A camera phone and a photographing method for a camera phone in accordance with embodiments of the invention will now be described in detail with reference to  FIGS. 1–6B . The method and apparatus according to the invention is discussed below with reference to a camera phone. However, the method and apparatus according to the invention may also be applied to other types of photographing and/or reproducing devices. 
       FIG. 1  is a schematic perspective view of a camera phone to which a photographing method for a camera phone in accordance with an embodiment of the invention is applied. The camera phone  100  of  FIG. 1  includes a main body  15  and a flap  16 . The flap  16  is rotatably attached to the main body  15  by a hinge assembly  50 . The camera phone  100  further includes a camera  10  provided on the hinge assembly  50  and a display unit  20  provided on the flap  16 . 
     A composition guideline  30  is provided on the display unit  20  and an input device  40  is provided on the main body  15  of the camera phone  100 . A user can select a variety of different composition guidelines. The guidelines may be provided in a menu (not shown) from which the user can then select a desired composition guideline, or a standard composition guideline may be initially displayed which the user may then adjust. For example, the user may adjust a composition guideline  30  displayed on the display unit  20  of the camera phone  100  by using, for example, an input device  40 , which may include a direction input device  40 A, such as a direction key, provided on the camera phone  10 . For example, a user may adjust a type, shape and/or color of the composition guideline using the input device  40 , according to user preferences. In this way, a user can precisely and easily photograph a subject through the composition guideline. 
       FIG. 2  is a flow chart of a photographing method in accordance with an embodiment of the invention. Referring to  FIG. 2 , when photographing a subject using a camera phone, according to embodiments of the invention, such as the camera phone  100  shown in  FIG. 1 , the camera phone  100  must be set to a photographing mode, step S 11 . An image of the subject is then displayed on the display unit  20  of the camera phone  100 , step S 12 . In this embodiment, a pre-stored standard composition guideline, such as the composition guideline  30  shown in  FIG. 1 , is displayed on the display unit  20 , step S 13 . The subject is then photographed through the composition guideline  30 . Assorted characteristics of the composition guideline  30  such as, for example, type, shape, and color, may be varied based on user preferences, step S 14 . 
     That is, if a user chooses not to alter any of these characteristics, the subject is photographed using the standard composition guideline, step S 17 . If, however, a user chooses to vary a characteristic of the composition guideline, for example, using the input device  40 , then, for example, the composition guideline is changed, step S 15 , based on a signal received from the input device  40  of the camera phone  100  in step S 14 . For example, the user may vary a coordinate value of the composition guideline. The subject is then photographed through the composition guideline, step S 16 . When a signal is not input via the input device  40  in step S 14 , a subject is photographed through the standard composition guideline, step S 17 . 
     As shown in  FIG. 3A , when a camera phone according to the embodiments of the invention, such as the camera phone  100  shown in  FIG. 1 , is in a photographing mode, a subject is displayed on the display unit  20  of the camera phone  100 . As shown in  FIG. 3B , a standard composition guideline  30  such as, for example, a horizontal composition guideline, as shown, for example, in  FIG. 3B , a vertical composition guideline (not shown), or the vertical and horizontal composition guideline shown in  FIG. 1 , is displayed on the display unit  20  overlaying the displayed subject. Preferably, the composition guideline  30  is displayed on the display unit  20  in accordance with user preferences. When a signal is generated based on user input from the input device  40 , a characteristic of the horizontal composition guideline is varied, for example, a coordinate value of the horizontal composition guideline may be varied in upper/lower/right/left directions, as shown, for example, in  FIG. 3C . A subject is then photographed through the composition guideline, as shown in  FIG. 3D . When there is no signal output from the input device  40 , a subject is photographed through the standard composition guideline such as, for example, the horizontal composition guideline shown in  FIG. 3B . 
     Exemplary types of composition guidelines, which may be selected using a composition guideline selecting menu (not shown) of a photographing menu (not shown) of the camera phone, will now be described with reference to  FIGS. 4A–4F .  FIG. 4A  shows a horizontal composition guideline.  FIG. 4B  shows a horizontal and vertical composition guideline.  FIG. 4C  shows a diagonal composition guideline.  FIG. 4D  shows a triangular composition guideline.  FIG. 4E  shows a composition guideline formed by combining the horizontal and vertical composition guideline of  FIG. 4B  and the diagonal composition guideline of  FIG. 4C .  FIG. 4F  shows a composition guideline formed by combining the horizontal composition guideline of  FIG. 4A  and the triangular composition guideline of  FIG. 4D . The composition guidelines shown in  FIGS. 4A–4F  are merely exemplary in nature, and numerous other useful types and/or combinations could be employed. 
     A plurality of composition guidelines such as, for example, those shown in  FIGS. 4A–4F , may be pre-stored in a memory (not shown) of a camera phone, such as camera phone  100  of  FIG. 1 . This allows a user to select a specific composition guideline from a composition guideline selecting menu, and then the selected specific composition guideline may be displayed on a display unit of the camera phone  100 . For example, if the selected specific composition guideline is a horizontal and vertical composition guideline such as, for example, that shown in  FIG. 4B , the selected horizontal and vertical composition guideline is displayed on a display unit of the camera phone. Coordinate values of the composition selected guidelines or other characteristics may be varied based on a signal from an input device of the camera phone. 
     If it is difficult to photograph the subject through the selected composition guideline, a combined composition guideline such as, for example, one of the combined composition guidelines shown in  FIGS. 4E and 4F , may be displayed by combining the appropriate pre-stored composition guidelines. For example, when it is difficult to set up a composition of a subject through a preset standard composition guideline such as, for example, a horizontal and vertical composition guideline, as shown in  FIG. 4B , a composition of the subject may be set up using a new composition guideline by combining the various composition guidelines and displaying the combined composition guideline. In addition to a type of composition guideline such as, for example, a solid line, a dotted line, and numerous other possible selections, and a combination of composition guidelines, a user may also select a color and a shape of the composition guideline. 
     Accordingly, a subject can be photographed through a standard, pre-set composition guideline, and a subject can also be photographed through a composition guideline selected by a user. Additionally, a coordinate value of the composition guideline or other characteristics may be varied based on a signal from an input device according to a user&#39;s demand, and a subject can then be photographed through the modified composition guideline. 
       FIGS. 5A–5C  show coordinate values of composition guidelines selected by a user and displayed on a display unit of a camera phone, such as camera phone  100  of  FIG. 1 . More particularly,  FIG. 5A  shows a coordinate value of an initial composition guideline displayed on a display unit of a camera phone.  FIG. 5B  shows a coordinate value of a horizontal composition guideline, which is set to (0, Y max/2 ), (X max , Y max/2 ) based on a coordinate value of the initial composition guideline.  FIG. 5C  shows a coordinate value of a triangular composition guideline, which is set to (0, Y max ), (X max/2 , 0), (X max , Y max ) based on a coordinate value of the initial composition guideline. 
     Hereinafter, a method of finely adjusting a coordinate value of a composition guideline selected by a user based on a signal from an input device of a camera phone, such as camera phone  100  in which input device  40  includes a direction input device  40 A, will be described with reference to  FIGS. 6A–6B , which are exemplary views showing changes in coordinate values of composition guidelines when a user inputs a signal from a direction input device  40 A of the camera phone  100 , thus causing a coordinate value of the composition guideline to be varied by a predetermined pixel unit based on the signal. 
     As shown in  FIG. 6A , a coordinate value of a diagonal composition guideline selected by a user may be varied by a predetermined pixel unit in upper/lower/right/left directions based on a signal from a direction input device of the camera phone. In this instance, preferably, a coordinate value of the composition guideline is preferably varied in a four-pixel unit. As shown in  FIG. 6B , a coordinate value of a triangular composition guideline selected by a user may be varied by a predetermined pixel unit in upper/lower/right/left directions. The variations shown in  FIGS. 6A–6B  are merely exemplary in nature, and it is understood that numerous combinations of composition guidelines and variations in coordinate values may be effectively employed. 
     Accordingly, when an appropriate composition guideline for a particular subject is not pre-stored in a memory of the camera phone, a user may vary a type, a shape, a color, and a coordinate value of a pre-stored composition guideline at will, to thereby display a new composition guideline and photograph a subject through the displayed composition guideline, thus greatly increasing the number of composition guidelines available to a user and greatly enhancing the utility and flexibility of the camera phone. 
     The camera phone and method according to embodiments of the invention provide at least the following advantages. 
     A method for a camera phone according to the embodiments of the invention allows the camera phone to easily and precisely set up a composition of a subject to be photographed. 
     Further, the method according to the embodiments of the invention provides for easily photographing a subject using a composition guideline. 
     Additionally, the photographing method for a camera phone according to the embodiments of the invention allows the camera phone to precisely and easily photograph a subject by displaying a guideline on a display unit of a camera phone. That is, using a photographing method for a camera phone in accordance with embodiments of the invention as broadly described herein, a subject may be precisely and easily photographed using a composition guideline which is appropriate for a particular subject by displaying a composition guideline in various forms on a display unit of a camera phone. Additionally, a picture of a subject photographed through the composition guideline may be easily and quickly edited using a graphic tool associated with a PC because, when the subject is photographed through the appropriate composition guideline, a composition of a picture of the subject is precisely set up, thus allowing the picture of a subject to be easily and quickly edited. 
     The foregoing embodiments and advantages are merely exemplary and are not to be construed as limiting the invention. The present teaching can be readily applied to other types of apparatuses. The description of the invention is intended to be illustrative, and not to limit the scope of the claims. Many alternatives, modifications, and variations will be apparent to those skilled in the art. In the claims, means-plus-function clauses are intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures.