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  Touch screen device and method of selecting files thereonUSPTO Application #: 20070273668Title: Touch screen device and method of selecting files thereon Abstract: A touch screen device and a method of operation are provided. The device and method allow for scrolling and selection of files from a file list, and for skipping or reversing an execution order of the selected files simply by performing a drag on a touch screen. The method of selecting files on the touch screen device includes detecting a diagonal drag on a screen, selecting file(s) included within a corresponding range, and skipping file(s) within the range. The method may also include changing an execution order of the selected file(s) when a drag with a return trajectory is detected. The method may also include scrolling through the file list in accordance with a direction and speed of the drag. The device and method allows a plurality of files to be selected and skipped at a time, and a desired file to be rapidly and easily located. (end of abstract) Agent: Ked & Associates, LLP - Chantilly, VA, US Inventors: Ho Joo Park, Ji Suk Chae, Young Ho Ham, Kyung Hee Yoo, Ji Ae Kim, Yu Mi Kim, Sang Hyun Shin, Seung Jun Bae, Yoon Hee Koo, Jun Hee Kim, Seong Cheol Kang USPTO Applicaton #: 20070273668 - Class: 345173 (USPTO) The Patent Description & Claims data below is from USPTO Patent Application 20070273668. Brief Patent Description - Full Patent Description - Patent Application Claims
[0001]This is a Continuation Application of Ser. No. 11/646,598 filed Dec. 28, 2006, which claims priority to Application Serial No. 10-2006-0046697 and 10-2006-0046699 filed in Korea on May 24, 2006, the entirety of which are incorporated herein by reference. BACKGROUND [0002]1. Field [0003]A touch screen device and method of operating a touch screen device are disclosed herein. [0004]2. Background Art [0005]Portable digital equipment, such as, for example, MP3 players, portable multimedia players (PMP), personal digital assistants (PDA), notebook computers or the like which are able to execute, for example, MP3 files (e.g., audio files), video files (e.g., avi files) and the like store a plurality of MP3 files and/or video files and play the files selected at the request of a user. In addition to essential data, a variety of additional information on the relevant file(s), such as, for example, title and singer information, is contained and recorded as tag information in the MP3 files and/or video files. [0006]Selection and playback of these audio or video files may be done by manipulating keys on a keypad provided with the digital equipment. For example, files may be selected and played back one by one, a plurality of files may be selected at one time and sequentially played back, or a file may be selected from a plurality of files and repeatedly played back based on user preferences. [0007]Because it is preferable that the aforementioned MP3 player, PMP, PDA and the like have as large a display as possible, touch screens have been employed as a user information input device instead of the conventional keypad. A touch screen may function as both a display and an input device, thus allowing information to be input or selected using, for example, a finger or stylus pen and the relevant information to be displayed based on the input or selection. When a list of audio or video files is displayed on a touch screen, a user may touch and select desired files from the file list, and the selected files will be played back by a predetermined program (e.g., a music playback program, Windows Media Player and the like). [0008]If there is an undesired music file next to the file currently being played back in the list, the undesired file is skipped and the next music is thus selected. However, if there are at least two or more undesired files in the list, it is inconvenient to select and skip the relevant music files one by one in order to skip all the undesired music files. [0009]Further, if files to be executed are spaced apart from a current position within the list, the files must be located by scrolling through the list on the screen. A scroll bar displayed at one side of the screen may be touched to perform a scrolling operation. However, the scroll speed is always kept at a constant level, resulting in a slow, tedious process when scroll length is long or the scroll is stopped beyond a desired position when the scroll length is short. BRIEF DESCRIPTION OF THE DRAWINGS [0010]Embodiments will be described in detail with reference to the following drawings, in which like reference numerals refer to like elements, wherein: [0011]FIGS. 1 and 2 are block diagrams of a touch screen device, in accordance with embodiments; [0012]FIG. 3 is a flowchart of a method of skipping files, in accordance with an embodiment; [0013]FIG. 4 is a flowchart of a method of scrolling a file list, in accordance with an embodiment; [0014]FIGS. 5A and 5B illustrate a file skipping operation, in accordance with an embodiment; and [0015]FIGS. 6A-6C illustrate a file scrolling operation, in accordance with an embodiment. DETAILED DESCRIPTION [0016]As shown in FIG. 1, a touch screen device in accordance with an embodiment may include a screen 10 which allows information to be input and displayed. The screen 10 may include a display 20 for displaying a plurality of file lists 50 and other data thereon, and a touch panel or detector 30, for detecting a touching action related to selecting the file lists 50 or data displayed on the display 20. It is noted that a touch may be any type of direct or indirect touch or contact using an appropriate touching implement. Thus, when a user touches the screen 10 using a touching implement, such as, for example, a finger, a stylus pen, or the like, the detector 30 may detect a touch point, and more particularly, an initial touch point, and movement of the touch point (hereinafter, referred to as a `drag`). The detector 30 may also detect a direction, speed, and trajectory associated with the drag. [0017]The display 20 may be any type of general screen display device, including, but not limited to, display devices such as, for example, a liquid crystal display (LCD), a plasma display panel (PDP), a light emitting diode (LED), or an organic light emitting diode (OLED). The detector 30 may be a thin layer provided on a surface, such as the front surface of the display 20, and may employ a resistive or capacitive method. A touch screen that utilizes infrared rays or the like may also be used. [0018]In the case of a resistive touch screen, the touch screen may include two layers coated with resistive materials and positioned at a constant interval, with electric currents supplied to both layers. If pressure is applied to one of the layers, causing that layer to come into contact with the other layer, an amount of electric current flowing along the layers may be changed at the contact point, and a touched point is thus detected based on the change in electric current. In contrast, in the case of a capacitive touch screen, the touch screen may include a glass layer with both surfaces coated with conductive material. Electric voltage is applied to edges of the glass, causing high frequencies to flow along the surface of the touch screen. A high frequency waveform may be distorted when pressure is applied to the surface of the touch screen. Thus, a touched point may be detected by a change in the waveform. [0019]The screen 10 shown in FIG. 1 may be connected to a controller 40. The controller 40 may control the preparation and execution of the file list 50 based on a selection determination made by the detector 30 and the display of various kinds of information (including the file list) onto the screen 10. The controller 40 may control not only the display 20, but also the overall operation of the digital equipment in which it is installed. Further, the controller 40 may operate the digital equipment based on the detection results of the detector 30. [0020]When selecting and executing files, the controller 40 may skip specific files, or may change an execution order of specific files. The controller 40 may determine the point and type of the user's drag and then skip the files included within a range corresponding to a drag trajectory. The drag trajectory may be set at a diagonal on a screen. If the drag trajectory is actually a return trajectory, that is, if the touch is maintained through the drag, returned to the initial touch point, and then released at the initial touch point, the detector 30 may change the execution order of the files included within a range corresponding to the drag trajectory, and execute the files in the changed execution order. [0021]If the drag trajectory is performed in a vertical direction, the controller 40 may upwardly and downwardly move (scroll) the file list 50. In this case, the speed and direction of the scroll may correspond to the speed and direction of the drag. 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