Display controlling method, time controlling method, time managing method, and broadcast receiving apparatus

A time controlling method for a broadcast receiving apparatus, the broadcast receiving apparatus being allowed to receive a broadcasting wave via a broadcast transmission path, simultaneous broadcasting of a 4K broadcasting service and a 2K broadcasting service being executed by the broadcasting wave, the time controlling method comprising:

• a first displaying step configured to receive the 4K broadcasting service included in the broadcasting wave and transmitted by an MMT method, demodulate the 4K broadcasting service, and display a broadcasting program of the 4K broadcasting service;
• a second displaying step configured to receive the 2K broadcasting service included in the broadcasting wave and transmitted by an MPEG2-TS method, demodulate the 2K broadcasting service, and display a broadcasting program of the 2K broadcasting service;
• and
• a time controlling step configured to control clock synchronization processing for the 4K broadcasting service and clock synchronization processing for the 2K broadcasting service,
• wherein in the time controlling step, even when the broadcasting program of the 4K broadcasting service is displayed in the first displaying step, the clock synchronization processing for the 2K broadcasting service is continued;
• and even when a broadcasting program the 2K broadcasting service is displayed in the second displaying step, the clock synchronization processing for the 4K broadcasting service is continued.