A digital broadcast reception device, comprising: a tuner/demodulator unit for tuning to physical channels and demodulating broadcast signals on the physical channels; a tuning control unit for controlling operation of the tuner/demodulator unit; a current position detection unit for detecting a current location of the digital broadcast reception device; a channel scan control unit for detecting physical channels receivable by the tuner/demodulator unit; a broadcast area map generation unit for generating a broadcast area map based on current locations detected by the current position detection unit, wherein the broadcast area map associates each of a plurality of broadcast service receivable areas created by the broadcast area map generation unit, in which area a broadcast service is receivable by the digital broadcast reception device, with a respective physical channel detected by the channel scan control unit, via which channel the broadcast service is receivable in the broadcast service receivable area, and with respective broadcast service information that is associated with broadcast content of the physical channel; and a broadcast area map storage unit for storing the generated broadcast area map, wherein each said broadcast service receivable area is represented as an area inside a polygon defined by vertices arranged in order, and coordinates of said vertices in an orthogonal coordinate system are stored for each said polygon in said broadcast area map storage unit, and wherein the tuning control unit is arranged to determine whether a reception state of a broadcast service provided by a physical channel to which the tuner/demodulator unit is tuned has worsened owing to movement of the digital broadcast reception device and, upon detecting a worsening of the reception state, switch the physical channel to another physical channel that provides the same broadcast service, the tuning control unit being arranged to make the switch based on the broadcast area map stored in the broadcast area map storage unit and the current location detected by the current position detection unit. a tuner/demodulator unit for tuning to physical channels and demodulating broadcast signals on the physical channels; a tuning control unit for controlling operation of the tuner/demodulator unit; a current position detection unit for detecting a current location of the digital broadcast reception device; a channel scan control unit for detecting physical channels receivable by the tuner/demodulator unit; a broadcast area map generation unit for generating a broadcast area map based on current locations detected by the current position detection unit, wherein the broadcast area map associates each of a plurality of broadcast service receivable areas created by the broadcast area map generation unit, in which area a broadcast service is receivable by the digital broadcast reception device, with a respective physical channel detected by the channel scan control unit, via which channel the broadcast service is receivable in the broadcast service receivable area, and with respective broadcast service information that is associated with broadcast content of the physical channel; and a broadcast area map storage unit for storing the generated broadcast area map, wherein each said broadcast service receivable area is represented as an area inside a polygon defined by vertices arranged in order, and coordinates of said vertices in an orthogonal coordinate system are stored for each said polygon in said broadcast area map storage unit, and wherein the tuning control unit is arranged to determine whether a reception state of a broadcast service provided by a physical channel to which the tuner/demodulator unit is tuned has worsened owing to movement of the digital broadcast reception device and, upon detecting a worsening of the reception state, switch the physical channel to another physical channel that provides the same broadcast service, the tuning control unit being arranged to make the switch based on the broadcast area map stored in the broadcast area map storage unit and the current location detected by the current position detection unit.