Abstract: A method and apparatus provide multiple on-screen displays in a signal processing unit capable of processing terrestrial, cable, and satellite broadcast signals. Also, a method and apparatus, for use in a settop box(STB), can provide quality OSD's(On-Screen Displays) to be displayed together with analog broadcast signals. The OSD's are processed at a digital signal processing module in the STB. While the analog broadcast signal is being displayed on the screen, the viewer can use an improved GUI processed by the digital signal processing module. The digital signal processing module includes a digital broadcast signal demodulator, a first and a second detectors, an A/D convertor, a microprocessor, an OSD buffer, an OSD generator, a video decoder, a mixing circuit, an NTSC/PAL encoder, switches, a first and a second AND gate, an inverter, and an OR gate.