FM multiplexed broadcast receiving apparatus

An FM multiplexed broadcast receiving apparatus for receiving paging service information, comprising:

• a reception circuit which receives frame data having a plurality of subframes including selective call data in the form of text information multiplexed on an FM radio wave, each of the subframes including a plurality of blocks each of which includes a substantial sync signal and a data packet;
• a decoder which decodes the frame data received by said reception circuit and which reproduces the substantial sync signal and data included in the data packets;
• a detector which detects the substantial sync signals which are synchronous with the plurality of blocks and generates block sync signals which are synchronous with the plurality of blocks;
• and
• a controller including an internal counter;
• wherein said internal counter counts the block sync signals, detects, based on a count value thereof, a predetermined subframe which is previously assigned to said FM multiplexed broadcast receiving apparatus, and continues self-operation while keeping previous timings when supply of the block sync signals thereto is stopped;
• wherein said controller (i) processes the data included in the data packets reproduced by said decoder, (ii) stops operation of said reception circuit, said detector, and said decoder after controlling said internal counter to perform a count operation of the block sync signals generated by said detector, and (iii) determines whether the selective call data received by said reception circuit matches predetermined selective call data previously assigned to the FM multiplexed broadcast receiving apparatus only when said internal counter detects the subframe previously assigned to said FM multiplexed broadcast receiving apparatus;
• and
• wherein said controller controls said reception circuit, said detector and said decoder to ordinarily be in an off state, and turns on said reception circuit, said detector and said decoder at a predetermined time before a timing at which the internal counter is expected to detect the predetermined subframe previously assigned to said FM multiplexed broadcast receiving apparatus.