Patent ID: 8532467

Claim:
A transmitting and receiving system comprising: a transmitting device comprising: a first high picture quality processing circuit (FHPQC) with a function for correcting a broadcast signal; a first recorder for recording first circuit attribute information that indicates the function of the first high picture quality processing circuit; and a control circuit that controls the function of the first high picture quality processing circuit, and a receiving device comprising: a second high picture quality processing circuit (SHPQC) with the function for correcting the broadcast signal transmitted from the transmitting device; a second recorder for recording second circuit attribute information that indicates the function of the second high picture quality processing circuit; and a comparator for: comparing the first circuit attribute information stored in the first recorder with the second circuit attribute information stored in the second recorder; and controlling one of the first high picture quality processing circuit and the second high picture quality processing circuit to correct the broadcast signal based on the comparison and controlling another one of the first high picture quality processing circuit and the second high picture quality processing circuit to avoid correcting the broadcast signal, wherein when the comparator controls the FHPQC to correct the broadcast signal and controls the SHPQC not to correct the broadcast signal, the broadcast signal is corrected by the FHPQC using the function and the corrected broadcast signal is transmitted from the FHPQC to the SHPQC and the corrected broadcast signal is not corrected by the SHPQC, and wherein when the comparator controls the FHPQC not to correct the broadcast signal and controls the SHPQC to correct the broadcast signal, the broadcast signal is not corrected by the FHPQC and then transmitted from the FHPQC to the SHPQC and the broadcast signal is corrected by the SHPQC using the function.