Vehicle reception apparatus for receiving broadcast signal and vehicle reception method for receiving broadcast signal
A vehicle reception apparatus can receive a broadcast signal through a receiver, perform data communication for receiving and displaying a broadcast service without transmission loss, and maximize memory efficiently by controlling an encoder and an interface in a vehicle. For example, the vehicle reception apparatus includes a receiver configured to receive a broadcast signal, a demodulator configured to extracting a baseband (BB) frame including service data and a BB frame size based on the received broadcast signal, an encoder configured to receive, from the demodulator, the extracted BB frame and the extracted BB frame size, and store the extracted BB frame in a buffer, and an interface configured to receive, from the encoder, the stored BB frame and the BB frame size.
1. A reception apparatus for a vehicle comprising:
a receiver configured to receive a broadcast signal;
a demodulator configured to extract a baseband (BB) frame containing service data and a BB frame size based on the received broadcast signal;
an encoder configured to receive, from the demodulator, the extracted BB frame and the extracted BB frame size, and store the received BB frame in a buffer; and
an interface configured to receive, from the encoder, the stored BB frame and the BB frame size,
wherein the interface is configured to:
extract a padding data size for the BB frame from the BB frame size, and
transmit the extracted padding data size to the encoder,
wherein the padding data size is obtained by subtracting, from a predetermined size value, a value generated based on the BB frame size.
2. The apparatus of claim 1 , wherein a size of the buffer is variable, and
wherein the encoder pads a header and padding data to the extracted BB frame.
3. The apparatus of claim 1 , wherein the demodulator is configured to:
acquire a transmission parameter from the received broadcast signal; and
acquire the BB frame size from the transmission parameter.
4. The apparatus of claim 3 , wherein the transmission parameter comprises a size of a Forward Error Correction (FEC) frame, a parity bit size, and a code rate of the FEC frame.
5. The apparatus of claim 1 , wherein the value generated based on the BB frame size is obtained by performing modulo operation on a sum of the BB frame size and a size value based on the predetermined size value.
6. The apparatus of claim 5 , wherein the encoder is configured to determine a size of the buffer by multiplying a value obtained by adding the size value and the padding data size to the BB frame size by a value of alpha.
7. The apparatus of claim 6 , wherein the value of alpha is based on a bandwidth and latency of the interface.
8. A method for receiving a broadcast signal in a vehicle, the method comprising:
receiving a broadcast signal by a receiver;
extracting, by a demodulator, a baseband (BB) frame containing service data and a BB frame size based on the received broadcast signal;
encoding, by an encoder, the BB frame and the BB frame size, wherein the encoding comprises storing the BB frame in a buffer; and
receiving, by an interface, the stored BB frame and the BB frame size from the encoder; and
processing, by the interface, the received BB frame,
wherein processing the received BB frame comprises:
extracting a padding data size of the BB frame based on the BB frame size, and
transmitting the extracted padding data size to the encoder,
wherein the padding data size is obtained by subtracting, from a predetermined size value, a value generated based on the BB frame size.
9. The method of claim 8 , wherein a size of the buffer is variable, and
wherein the encoding comprises padding a header and padding data to the BB frame.
10. The method of claim 8 , wherein the extraction by the demodulator comprises:
acquiring a transmission parameter from the received broadcast signal; and
acquiring the BB frame size from the transmission parameter.
11. The method of claim 10 , wherein the transmission parameter comprises a size of a Forward Error Correction (FEC) frame, and a parity bit size, and a code rate of the FEC frame.
12. The method of claim 8 , wherein the value generate based on the BB frame size is obtained by performing modulo operation on a sum of the BB frame size and a size value based on the predetermined size value.
13. The method of claim 12 , further comprising determining, by the encoder, a size of the buffer by multiplying a value obtained by adding the size value and the padding data size to the BB frame size by a value of alpha.
14. The method of claim 13 , wherein the value of alpha is based on a bandwidth and latency of the interface.
15. The apparatus of claim 5 , wherein the predetermined size value is 188 bytes.
16. The apparatus of claim 6 , wherein the size value is 17 bytes.
17. The method of claim 12 , wherein the predetermined size value is 188 bytes.
18. The method of claim 13 , wherein the size value is 17 bytes.