Patent ID: 7590433

Claim:
A portable electronic device, comprising: a body having a plurality of electronic elements; a display formed on a first surface of the body; a housing formed on a second surface of the body, wherein the body is operated in a vertical direction or a horizontal direction, the display has a first display mode and a second mode correspondingly, and a ball sleeve is formed at one corner of the housing; and a transmitter/receiver having a ball spiral, wherein the transmitter/receiver is pivotally connected to the ball sleeve by connecting the ball spiral and the ball sleeve comprising a groove and an opening, so that the transmitter/receiver can be rotated around the ball spiral with the groove, rotated to a first signal receiving position corresponding to the first display mode of the display with the groove, rotated to a second signal receiving position corresponding to the second display mode of the display with the groove via the opening, or in an accommodating position when the transmitter/receiver is received in the housing, wherein the housing has a first rotation slot and a second rotation slot corresponding to the two sides of the ball spiral, which intersect at the ball spiral, a first ball and a second ball being located in the two sides of the transmitter/receiver respectively, wherein the first ball and the second ball are in the first rotation slot and the second slot respectively when the transmitter/receiver is in the accommodating position.