Semiconductor device and signal processing method thereof

摘要

A semiconductor device includes a one-segment tuner I/F that is connected to a one-segment tuner, a tuner I/F that is connected to a digital terrestrial tuner, a decoder that selectively decodes a first broadcast signal supplied from the one-segment tuner I/F and a second broadcast signal supplied from the tuner I/F, a general purpose processor that is provided separately from the decoder and decodes the first broadcast signal, and a switch unit that, based on signal intensity of the second broadcast wave, switches the decoding by the decoder between the first broadcast signal and the second broadcast signal while the general purpose processor is decoding the first broadcast signal. The one-segment tuner I/F, the tuner I/F, the decoder, the general purpose processor, and the switch unit are integrated on one chip.

主权项

1. A semiconductor integrated circuit device provided in a semiconductor chip, comprising:
a first tuner interface configured to be coupled to a first tuner for receiving a first broadcast wave transferring first content data; a second tuner interface configured to be coupled to a second tuner for receiving a second broadcast wave transferring second content data; a general purpose processor configured to decode a first broadcast signal supplied from the first tuner interface; and a decoder configured to decode the first broadcast signal and a second broadcast signal supplied from the second tuner interface, wherein an amount of the first content data transferred per unit time is smaller than that of the second content data, wherein the general purpose processor and the decoder are configured to decode the first broadcast signal and the second broadcast signal, respectively, in a same period, and wherein the general purpose processor has a function of determining which of the first and second broadcast signals the decoder decodes based on a field intensity of the second broadcast wave.