Abstract: A projection type display device and a method for controlling the same are disclosed which are capable of preventing a reduction in the brightness of video caused by an ineffective region. The method includes the steps of determining effective and ineffective video regions of video based on a brightness of an input video signal, calculating an average brightness value of the effective video region, and controlling an optical output of the projection type display device based on the calculated average luminance value.

Abstract: The present invention provides an improved connector structure, which is a double-layer connector comprising an insulating main body, an upper and a lower terminal seat, a first connector, and a second connector. The insulating main body has a first main body and a second main body. A D-type connector is installed in the first main body. Conductive terminals of the D-type connector are bent into L shapes and then embedded into the upper and lower terminal seats, which are then embedded at the rear side of the insulating main body. The AV plug connector is wholly assembled and then installed in the second main body. Several AV plug connectors are integrated on the insulating main body to facilitate insertion for use. Moreover, the whole structure is much simplified to facilitate assembly, hence greatly lowering manufacturing and processing cost.

Abstract: A compound type connector comprises an insulating seat, an AV terminal connector, an S terminal connector and a housing. The insulating seat has a first receiving space and a second receiving space at the upper and lower spaces thereof. The AV terminal connector is installed within the first receiving space of the insulating seat. The AV terminal connector has a body. A plurality of terminals are installed within the body, and one end of each terminal protrudes out of the insulating seat. The S terminal connector is installed within the second receiving space. The S terminal connector has a body. The plurality of terminals are installed in the body, while one end of the terminals protrudes out of the insulating seat; and a housing encloses the insulating seat. The housing has at least one shielding surface, the shielding surface having an upper and a lower openings with respect to the AV terminal connector and the S terminal connector.

Abstract: A compound type connector comprises an inserting seat, a first connector, a second connector, a housing, and a plurality of positioning legs. In the insulating seat, an upper portion and a lower portion therewithin are formed as a first receiving space and a second receiving space, respectively. The first connector is installed at the first receiving space of the insulating seat. The first connector has a plurality of terminals, and one end of each terminal protrudes out of the insulating seat. The second connector is installed within the second receiving space of the insulating seat. The second connector has a plurality of terminals. One end of each terminal protrudes out of the insulating seat. The housing has at least one shielding surface and housing encloses the insulating seat. Two opposite openings correspondent to the first connector and the second connector, respectively, are installed on the shielding surface. The plurality of positioning legs are assembled to the bottom of the housing.