Patent ID: 6833874
Filing Date: 2004-12-21
Classification: H04N

Abstract:
A ticker tape picture-in-picture (PiP) system comprising:an image display device; a first tuner for receiving a first image signal corresponding to a first image and outputting a first video formatted signal corresponding thereto; a second tuner for receiving a second image signal corresponding to a second image, the second image including a ticker tape image portion, and outputting a second video formatted signal corresponding thereto; a video switching subsystem for receiving the first video formatted signal and the second video formatted signal and selectively outputting to the image display device an RGB formatted display signal derived from one of the first video signal and the second video signal; a microprocessor for sending a timing signal to the video switching subsystem, the timing signal causing the video switching subsystem to selectively switch between outputting an RGB formatted display signal derived from the first video signal and an RGB formatted display signal derived from the second video signal in such a manner that the image display device sequentially receives an RGB formatted display signal corresponding to a predetermined portion of the first image and an RGB formatted display signal corresponding to the ticker tape image portion of the second image; wherein the first and second video signals include audio and video components and wherein the video switcher subsystem includes: an audio/video switch configured to receive the first and second video signals from the first and second tuners, respectively, to stitch audio and video components of the first and second video signals, and to output a stitched first video signal, a stitched second video signal, a Y formatted signal and a C formatted signal; a V-to-YUV format converter configured to convert the stitched second video signal to a YUV formatted signal; and a video mixer/switch configured to receive the Y formatted signal, the C formatted signal and the YUV formatted signal and to selectively and sequentially convert the Y and C formatted signals and the YUV formatted signal into an RGB formatted display signal.