Patent ID: 7796499

Claim:
A method of determining whether to generate a video refresh request, the method comprising: receiving a packet; performing at least one of the steps of: determining whether the received packet contains an error; and determining whether a packet prior to the received packet was lost; if the step of determining whether the received packet contains an error was performed, and if responsive thereto, there is a determination that the received packet contains an error, increasing an error index; if the step of determining whether a packet prior to the received packet was lost was performed, and if responsive thereto, there is a determination that a packet prior to the received packet has been lost, increasing the error index; if the step of determining whether the received packet contains an error was performed, and if responsive thereto, there is a determination that the received packet does not contain an error, decreasing the error index by a value proportional to a size of the received packet; and if the step of determining whether a packet prior to the received packet was lost was performed, and if responsive thereto, there is a determination that a packet prior to the received packet has not been lost, decreasing the error index by a value proportional to a size of the received packet.