US Patent 7453440 Portable electronic device with improved audio and video effects

An exemplary portable electronic device comprises a base unit, a display unit with a display unit, a hinge mechanism for pivotably attaching the display unit to the base unit, and a console assembly including a controller and a speaker. An extension portion extends from a rear end of the base unit. Two support portions extend from a lower portion of the display unit, and the display unit defines a holding space between the two support portions to receive the extension portion of the base unit. The hinge mechanism includes two fixing members attached on the extension portion, and two pivoting members respectively secured to the two support portions and pivotably mounted to the two fixing members. The display unit is pivotable between a first position where the display screen is toward the base unit and a second position where the display screen is away the base unit. The controller is rotatably mounted on the extension portion and is rotatable to cause sound output of the speaker being oriented with the same direction as the display screen at the first and second positions.