Patent ID: 8214730

Claim:
A signal processing system comprising: a transmitting-side apparatus transmitting a digital signal; and a receiving-side apparatus receiving said digital signal and coupled to the transmitting side apparatus through an HDMI cable, wherein said transmitting-side apparatus includes: a digital signal transmitter transmitting said digital signal; and a signal controller controlling said digital signal, wherein said receiving-side apparatus includes: a digital signal receiver receiving said digital signal; an error rate detector detecting an error rate of said digital signal received; a receiving-side controller transmitting error rate data based on said detected error rate to said transmitting-side apparatus when said detected error rate is equal to or more than a predetermined threshold value whereas the receiving-side controller does not transmit said error rate data to said transmitting-side apparatus when said detected error rate is less than the predetermined threshold value; and a display device displaying a warning on screen which indicates that video image and sound are not normally replayed because of a poor quality of the HDMI cable when the transmitting error rate data has been already repeated a predetermined number of times or more, and wherein said transmitting-side apparatus further includes a transmitting-side controller receiving said error rate data and controlling said signal controller based on said error rate data.