Patent ID: 7710906

Claim:
A transmitting and receiving system comprising: a transmitting apparatus to transmit data; and a receiving apparatus to receive the data by means of radio communication; wherein the transmitting apparatus comprises: at least one processor; and at least one memory device storing instructions, which when executed by the at least one processor, cause the at least one processor to: (a) receive a first state information from the receiving apparatus, wherein the first state information is indicative of a normal state of the radio communication; (b) calculate control information including a transmission rate; (c) thereafter, receive a second state information from the receiving apparatus, wherein the second state information is indicative of a degraded state of the radio communication; (d) in response to said second state information being received, store said calculated control information which includes said transmission rate; (e) thereafter, receive a third state information from the receiving apparatus, wherein the third state information is indicative of a normal state of the radio communication; and (f) in response to said third state information being received: (i) read said stored calculated control information which includes said transmission rate; and (ii) control transmission of the data using said stored calculated control information which includes said transmission rate; wherein the receiving apparatus comprises: (a) data reception means for receiving data transmitted from the data transmission means by means of the radio communication; (b) determination means for determining the radio communication state based on data received by the data reception means; and (c) state information transmission means for transmitting state information to the transmitting apparatus indicating the radio communication state determined by the determination means.