Apparatus for detecting data in a vertical blanking period of a radio frequency broadcasting signal

摘要

An apparatus for detecting data included in a vertical blanking interval of a radio frequency broadcasting signal which can reduce the possibility of error generation in fetching data, and thus accurately and rapidly receive and process additional information included in the broadcasting signal. The data detecting apparatus includes a clock signal generating section for generating a predetermined fetch clock signal in response to a predetermined master clock signal and reset signal, an enable signal generating section for receiving a line select signal and generating a predetermined enable signal in accordance with the master clock signal and the fetch clock signal, a data delay section for delaying serial data for a predetermined time in accordance with the master clock signal and outputting delayed serial data, and a data conversion section for receiving the delayed serial data from the data delay section and converting the delayed serial data into parallel data in accordance with the fetch clock signal from the clock signal generating section, the enable signal from the enable signal generating section, and the reset signal.