초록 ▼

A selective call receiving apparatus for receiving FM multiplexed broadcasting signals which is designed to suppress consumed power by efficiently using a battery as a power supply. This apparatus has a reception circuit, an FM multiplex decoder, a subframe counter and a CPU. The reception circuit r

A selective call receiving apparatus for receiving FM multiplexed broadcasting signals which is designed to suppress consumed power by efficiently using a battery as a power supply. This apparatus has a reception circuit, an FM multiplex decoder, a subframe counter and a CPU. The reception circuit receives frames having plural pieces of subframes including ID data for a local terminal. The FM multiplex decoder detects a sync signal in each received subframe. The subframe counter counts the number of subframes in accordance with the detected sync signal. The CPU stops the operation of the reception circuit and FM multiplex decoder after causing the subframe counter to self-operate to perform the counting operation based on the sync signal detected in a continuous reception mode, and activates the reception circuit and FM multiplex decoder only when the count value of the subframe counter matches with a previously assigned subframe number and executes data processing including a process of determining if ID data in received data matches with that of the local terminal.

대표청구항 ▼

[ What is claimed is:] [14.] 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 a service identification code in the form of information multiplexed on the FM rad

[ What is claimed is:] [14.] 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 a service identification code in the form of information multiplexed on the FM radio wave, each of the subframes including a plurality of blocks each of which includes the service identification code, a substantial sync signal and a data packet;a decoder which decodes the frame data received by said reception circuit and reproduces the service identification code, the substantial sync signals 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;a service identification code discriminating circuit which discriminates whether the service identification code reproduced by said decoder indicates a selective paging service, and outputs a discrimination result;a counter which counts the blocks in the frame data based on the block sync signals generated by said detector and generates an interruption signal when a count value of said counter falls within a predetermined range corresponding to a predetermined subframe which is previously assigned to said FM multiplexed broadcast receiving apparatus and when the discrimination result, output from said service identification code discriminating circuit, indicates that the service identification code indicates a selective paging service; anda control unit which performs data processing operations responsive to receipt of the interruption signal, including determining whether selective call data of a terminal to be paged which is included in the frame data decoded by said decoder matches predetermined selective call data which is previously assigned to said FM multiplexed broadcast receiving apparatus; andwherein said control unit is ordinarily in an off state, and is turned on only when the interruption signal is generated.