Abstract: A control unit selects an analog audio signal output from an audio information processing unit, if a digital audio signal received via an HDMI connector is present. If not, the control unit selects an analog audio signal output from an analog audio signal input unit.

Abstract: A display apparatus for displaying a partial-screen image within a full-screen image includes a change-over switch for exchanging the video signals for the full-screen and partial-screen displays. When only the full-screen image is displayed, character information corresponding to the full-screen image can be turned on or off. When both the full-screen image and the partial-screen image are displayed, a cyclic operation can be performed under control of a controller. The cycle includes: 1) turning on the display of character information corresponding to the full-screen image, 2) turning on the display of character information corresponding to the partial-screen image, and 3) turning off the display of character information. The display apparatus is also capable of turning on the display of character information corresponding to the full-screen image when a mute of sound is turned on and turning off the display of character information when the mute of sound is subsequently turned off.

Abstract: A cordless remote control apparatus has a controlled portion adapted to a main body and a control unit cordlessly or wirelessly coupled to the controlled portion. The control unit contains an instruction transmitter for generating an instruction wave. The main body contains a device which is actuated according to the instruction wave wirelessly transmitted from the control unit to the controlled portion. The controlled portion includes an instruction receiver for generating a receiving indication signal when the instruction receiver is coupled to the instruction transmitter via the instruction wave, and providing the device with a control command corresponding to the contents of the instruction wave. The control command determines the actuation of the device. The controlled portion further includes a confirmation transmitter coupled to the instruction receiver for generating a confirmation wave for a given period of time after the receiving indication signal disappears and control command is generated.