Abstract: Provided is a simplified input device, having a display module connected with a processing module. When the processing module receives a confirming command produced by an input module, the processing module loads a selected symbol. When the selected symbol is a typographical symbol, the processing module displays the selected symbol on a position of an input cursor. When the selected symbol is an input cursor moving symbol, the processing module moves the position of the input cursor corresponding to the selected symbol. Therefore, a user types letters, and moves the input cursor to a position of a wrong letter to input another letter for quickly correcting the wrong letter. Further, a connecting module receives typographical symbol setting data to update the language of the typographical symbols. The language is not limited by a manufacturer of the simplified input device and enhanced convenience in use is provided.

Abstract: A method of controlling a ballast for a high intensity discharge (HID) lamp and related system. The method includes setting initial operating parameters of the ballast to turn on the HID lamp, generating starting transient electric characteristic values of the HID lamp by measuring actual electric parameters at a predetermined time during a transient process after the HID lamp is turned on, searching stored data for a rated power corresponding to the starting transient electric characteristic value range of the HID lamp after determining that the starting transient electric characteristic value is within stored starting transient electric characteristic value ranges of the HID lamp, and searching the stored data for a corresponding ballast operating parameter, to allow the HID lamp to operate in the corresponding rated power, and realize that a single ballast can be adapted to and control the HID lamps to operable in their respective specific rated power.

Abstract: A method of controlling a ballast for a high intensity discharge (HID) lamp and related system. The method includes setting initial operating parameters of the ballast to turn on the HID lamp, generating starting transient electric characteristic values of the HID lamp by measuring actual electric parameters at a predetermined time during a transient process after the HID lamp is turned on, searching stored data for a rated power corresponding to the starting transient electric characteristic value range of the HID lamp after determining that the starting transient electric characteristic value is within stored starting transient electric characteristic value ranges of the HID lamp, and searching the stored data for a corresponding ballast operating parameter, to allow the HID lamp to operate in the corresponding rated power, and realize that a single ballast can be adapted to and control the HID lamps to operable in their respective specific rated power.