Abstract: The invention provides a digital broadcast receiver which comprises a tuner 1 for selecting the desired broadcasting station from among a plurality of broadcasting stations, a demodulator circuit 3 for decoding a plurality of bit frames constituting the digital broadcast of the selected station, and a control circuit 4 for controlling the operation of the tuner and the demodulator circuit. With one broadcasting station selected, the control circuit 4 stops decoding at least one of the bit frames, and searches for other broadcasting station or stations of satisfactory reception condition utilizing free time resulting from stopping decoding. Upon the reception condition becoming impaired, the station being received is changed over to the station of satisfactory reception condition by the control circuit 4.

Abstract: A radio receiver embodying the present invention comprises, a front-end circuit for selecting a broadcasting wave of a certain frequency from broadcasting waves received, a memory for storing a channel registering table, tuning key, and a control circuit. A channel registering table has a plurality of channels registered therein, and a frequency and register time for each channel are written thereon. The control circuit specifies a channel of which register time is closest to time of the depression of the key out of a plurality of channels registered in the table upon the depression of the key to command tuning operation of the channel to the front-end circuit. Thus, the radio receiver can be realized wherein the device body is compact, and even when a listener does not remember a channel registered, a desired channel can be tuned in with easy manipulation for a short period of time.

Abstract: The invention provides a digital broadcast receiver for receiving broadcast waves comprising multiplexed broadcast signals of a plurality of channels including a main channel and a subchannel. The receiver comprises demodulator circuits for demodulating received data of one of the channels selected and outputting the resulting data, a memory capable of storing received data as to a program transmitted on the subchannel, and a controller for writing the received data as to the program transmitted on the subchannel to the memory while updating the received data at all times, and reading the received data stored in the memory from the head of the program and feeding the read data to the demodulator circuits upon a changeover from the main channel to the subchannel. When the main channel is changed over to the subchannel, the program broadcast on the subchannel can be listened to always from the beginning.

Abstract: A radio receiver embodying the present invention comprises, a front-end circuit for selecting a broadcasting wave of a certain frequency from broadcasting waves received, a memory for storing a channel registering table, tuning key, and a control circuit. A channel registering table has a plurality of channels registered therein, and a frequency and register time for each channel are written thereon. The control circuit specifies a channel of which register time is closest to time of the depression of the key out of a plurality of channels registered in the table upon the depression of the key to command tuning operation of the channel to the front-end circuit. Thus, the radio receiver can be realized wherein the device body is compact, and even when a listener does not remember a channel registered, a desired channel can be tuned in with easy manipulation for a short period of time.

Abstract: The invention provides a digital broadcast receiver which comprises a tuner 1 for selecting the desired broadcasting station from among a plurality of broadcasting stations, a demodulator circuit 3 for decoding a plurality of bit frames constituting the digital broadcast of the selected station, and a control circuit 4 for controlling the operation of the tuner and the demodulator circuit. With one broadcasting station selected, the control circuit 4 stops decoding at least one of the bit frames, and searches for other broadcasting station or stations of satisfactory reception condition utilizing free time resulting from stopping decoding. Upon the reception condition becoming impaired, the station being received is changed over to the station of satisfactory reception condition by the control circuit 4.

Abstract: The invention provides a digital broadcast receiver for receiving broadcast waves comprising multiplexed broadcast signals of a plurality of channels including a main channel and a subchannel. The receiver comprises demodulator circuits for demodulating received data of one of the channels selected and outputting the resulting data, a memory capable of storing received data as to a program transmitted on the subchannel, and a controller for writing the received data as to the program transmitted on the subchannel to the memory while updating the received data at all times, and reading the received data stored in the memory from the head of the program and feeding the read data to the demodulator circuits upon a changeover from the main channel to the subchannel. When the main channel is changed over to the subchannel, the program broadcast on the subchannel can be listened to always from the beginning.