Abstract: A metal mask and an inspecting method thereof are provided for improving quality standard detection. The metal mask has a first and a second long side and plural pattern regions. The method includes the followings steps Based on the pattern regions adjacent to the first and second long sides, a first and a second reference straight line adjacent to the first and second long sides respectively are defined. Then, a first maximum offset length between the pattern regions and the first reference straight line is measured. A second maximum offset length between the pattern regions and the second reference straight line is measured. When a difference between the first and second maximum offset lengths is less than or equal to 20 ?m, the metal mask is determined to meet an inspecting standard.

Abstract: A method of displaying the title and words of songs on a portable digital music player includes the steps of using an editing software to edit words of songs into pages, storing the pages of words of the songs in the hard diskdrive of a computer for enabling the computer to automatically display the edited words on the screen when playing the selected song, recording the time for displaying each page of the words of the song played through the computer, driving the computer to store the file after the end of the play of the song, transferring the storage data from the computer to the memory of the portable digital music player, and driving the portable digital music player to display page by page the words of the song being played by the portable digital music player.