Abstract: A digital broadcast receiving device includes a first processor for extracting added information, a storage device for storing the added information, and a second processor having a low power consumption mode and a normal power mode, for effecting the circuit control for the watching and listening operation according to a preset program and the added information. The first processor informs the second processor that the added information is extracted, the second processor changes the mode thereof to the normal power mode when it is informed from the first processor that the added information is extracted while it is set in the low power consumption mode in the standby state, writes the added information extracted by the first processor into the storage device, and changes the mode thereof into the low power consumption mode after completion of the write operation.

Abstract: A PLL circuit for use in a digital broadcasting receiver includes a receiver for receiving a bit stream containing program clock references (PCRs) transmitted from a broadcast station. The PCRs correspond to a frequency and phase of a transmitter system clock. The circuit also contains an oscillator for generating receiver system clocks, a counter responsive to the system clocks, and a connection to allow the bit stream to flow from the receiver to the oscillator. A controller controls the counter based on differences between the PCRs in the bit stream and the counter output. A load control means successively loads the PCRs on the counter in their order of transmission to lock the frequency and phase of the receiver system clock provided from the oscillator with the frequency and phase of the transmitter system clock.

Abstract: A video transmission apparatus that has a first input terminal for receiving a low-resolution TV signal. The apparatus also has a second input terminal for receiving a high-resolution TV signal and for outputting said high-resolution TV signal. The apparatus converts the low-resolution TV signal into a signal having a format which is equal to that of the high-resolution TV signal. The apparatus selects either the signal, which has been produced by converting low-resolution TV signal into a signal having a format which is equal to that of the high-resolution TV signal, or the high-resolution TV signal, which is outputted from the second input terminal The signal, which has been produced by converting low-resolution TV signal into a signal having a format which is equal to that of the high-resolution TV signal, is fitted into the high-resolution TV signal. The apparatus encodes the selected signal into a digital high-efficiency coded signal, and outputs a signal indicative thereof.

Abstract: A video transmission apparatus that has a first input terminal for receiving a low-resolution TV signal. The apparatus also has a second input terminal for receiving a high-resolution TV signal and for outputting said high-resolution TV signal. The apparatus converts the low-resolution TV signal into a signal having a format which is equal to that of the high-resolution TV signal. The apparatus selects either the signal, which has been produced by converting low-resolution TV signal into a signal having a format which is equal to that of the high-resolution TV signal, or the high-resolution TV signal, which is outputted from the second input terminal The signal, which has been produced by converting low-resolution TV signal into a signal having a format which is equal to that of the high-resolution TV signal, is fitted into the high-resolution TV signal. The apparatus encodes the selected signal into a digital high-efficiency coded signal, and outputs a signal indicative thereof.