Broadcast signal playback method, map generation method, and apparatus

A map generation apparatus, comprising at least one processor and at least one memory, wherein the at least one memory stores program instructions that when executed by the at least one processor, cause the map generation apparatus to perform operations comprising:

• obtaining a first positioning location of a terminal;
• detecting strength of a broadcast signal received by the terminal at the first positioning location;
• and
• sending first information to a server, wherein the first information comprises the first positioning location, the strength of the broadcast signal received by the terminal at the first positioning location, and a modulation frequency of the broadcast signal, and the first information is used to determine a coverage range corresponding to a strength range of a broadcast signal in a broadcast signal strength layer, wherein the broadcast signal strength layer is generated according to a plurality of pieces of first information comprising the first information and at least one coverage range corresponding to at least one strength range of a broadcast signal modulated at a second modulation frequency by training data in the plurality of pieces of first information, and wherein the at least one coverage range is preset based on a modulation frequency of a broadcast signal and geographic information.

An apparatus for playing broadcast signal, the apparatus comprising at least one processor and at least one memory, wherein the at least one memory stores program instructions that when executed by the at least one processor, cause the apparatus to perform operations comprising:

• receiving, a broadcast signal strength layer from a map server, wherein the broadcast signal strength layer is a map layer, and the broadcast signal strength layer represents a coverage range of a broadcast signal corresponding to a strength level of the broadcast signal;
• switching, at a first moment according to a current positioning location of a terminal, a current motion status of the terminal, a future driving path of the terminal, and the broadcast signal strength layer, from a first state in which only a first broadcast signal is received to a second state in which both the first broadcast signal and a second broadcast signal are received, wherein types of the first broadcast signal and the second broadcast signal are different, wherein there is a delay in the second broadcast signal relative to the first broadcast signal;
• playing, the received first broadcast signal at a single rate when the terminal is in the first state;
• playing, the received first broadcast signal when the terminal is in the second state, wherein the first broadcast signal is performed at a lower rate than the single rate when being in the second state;
• switching, at a second moment, from the second state to a third state in which only the second broadcast signal is received, wherein the second moment is a moment of first synchronization between the played first broadcast signal and the received second broadcast signal;
• and
• playing, the second broadcast signal at the single rate when the terminal is in the third state.