# US 2019/0173631 A1 · Device for transmitting broadcast signals, device for receiving broadcast signals, method for transmitting broadcast signals, and method for receiving broadcast signals

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- Number: US 2019/0173631 A1
- Document ID: US20190173631A1
- Status: Published application
- Kind: A1
- Application number: 15/772,692
- Filed: 2016-03-17
- Published: 2019-06-06
- Earliest claimed: 2015-11-01
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Jaeho HWANG; Sungryong HONG
- Web page: https://patentgrep.com/patent/US20190173631A1

## CPC

- H04L 27/26524: {Fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators in combination with other circuits for demodulation}
- H04L 1/004: {by using forward error control (H04L1/0618 takes precedence; coding, decoding or code conversion, for error detection or correction H03M13/00)}
- H04L 1/0041: {Arrangements at the transmitter end}
- H04L 1/0057: {Block codes (H04L1/0061, H04L1/0064 take precedence)}
- H04L 1/0059: {Convolutional codes}
- H04L 1/0061: {Error detection codes}
- H04L 1/0071: {Use of interleaving (interleaving per se H03M13/27)}
- H04L 5/00: Arrangements affording multiple use of the transmission path
- H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT}
- H04L 12/18: for broadcast or conference {, e.g. multicast}
- H04L 12/1877: {Measures taken prior to transmission}
- H04L 27/2601: {Multicarrier modulation systems}
- H04L 27/2649: {Demodulators}
- H04L 27/38: Demodulator circuits; Receiver circuits
- H04L 61/2592: using tunnelling or encapsulation
- H04B 7/0413: MIMO systems
- H04L 27/2647: {Arrangements specific to the receiver only (equalisation H04L27/01)}
- H04L 2001/0093: {Point-to-multipoint}
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04B: TRANSMISSION

## Abstract

A method of receiving broadcast signals according to an embodiment of the present invention may comprise the steps of: receiving broadcast signals; demodulating the received broadcast signals by an orthogonal frequency division multiplex (OFDM) method; parsing at least one signal frame from the demodulated broadcast signals, wherein the at least one signal frame includes service data and signaling data corresponding to at least one physical path; decoding the service data included in the at least one signal frame; and encapsulating a baseband packet including the decoded service data and outputting a container packet.

## Claims

### Claim at position 1

1-16. (canceled)

### Claim 17

A method of receiving a broadcast signal, the method comprising:
receiving the broadcast signal including a signal frame;
demodulating the received broadcast signal by an Orthogonal Frequency Division Multiplex (OFDM) scheme;
acquiring the signal frame from the demodulated broadcast signal, wherein the signal frame includes service data and signaling data for signaling the service data;
decoding the service data in the signal frame and outputting a baseband packet including the decoded service data;
encapsulating the baseband packet into a container packet, wherein the container packet includes a header and a payload, wherein the header includes indication information indicating a start point of the container packet, and wherein the payload includes the baseband packet; and
slicing the container packet into data units having a predefined length and outputting the data units for system decoding.

### Claim 18 (depends on 17)

The method of claim 17, wherein the header of the container packet further includes at least one of type information, length information and continuity information for the baseband packet.

### Claim 19 (depends on 18)

The method of claim 18, wherein the type information includes at least one of error detection information of the baseband packet and identification information of a physical layer pipe to which the service data are belong.

### Claim 20 (depends on 17)

The method of claim 17, wherein the header of the container packet further includes information related to a transmission point in time of the signal frame.

### Claim 21 (depends on 20)

The method of claim 20, wherein the information related to the transmission point in time includes a time mode field and a time information field, wherein the time mode field includes precision indication information indicating a precision of time information included in the time information field, and wherein the time information field includes the time information of the precision indicated by the precision indication information.

### Claim 22 (depends on 21)

The method of claim 21, wherein the signaling data include the precision indication information in the time mode field and the time information in the time information field.

### Claim 23

An apparatus for receiving a broadcast signal, the apparatus comprising:
a receiver to receive the broadcast signal including a signal frame;
a demodulator to demodulate the received broadcast signal by an Orthogonal Frequency Division Multiplex (OFDM) scheme;
a frame parser to acquire the signal frame from the demodulated broadcast signal, wherein the signal frame includes service data and signaling data for signaling the service data;
a decoder to decode the service data in the signal frame and output a baseband packet including the decoded service data; and
a container encapsulator to encapsulate the baseband packet into a container packet, slice the container packet into data units having a predefined length, and output the data units for system decoding, wherein the container packet includes a header and a payload, wherein the header includes indication information indicating a start point of the container packet, and wherein the payload includes the baseband packet.

### Claim 24 (depends on 23)

The apparatus of claim 23, wherein the header of the container packet further includes at least one of type information, length information and continuity information for the baseband packet.

### Claim 25 (depends on 24)

The apparatus of claim 24, wherein the type information includes at least one of error detection information of the baseband packet and identification information of a physical layer pipe to which the service data are belong.

### Claim 26 (depends on 23)

The apparatus of claim 23, wherein the header of the container packet further includes information related to a transmission point in time of the signal frame.

### Claim 27 (depends on 26)

The apparatus of claim 26, wherein the information related to the transmission point in time includes a time mode field and a time information field, wherein the time mode field includes precision indication information indicating a precision of time information included in the time information field, and wherein the time information field includes the time information of the precision indicated by the precision indication information.

### Claim 28 (depends on 27)

The apparatus of claim 27, wherein the signaling data include the precision indication information in the time mode field and the time information in the time information field.

### Claim 29 (depends on 17)

The method of claim 17, wherein each of the data units has a length of 188-byte.

### Claim 30 (depends on 17)

The method of claim 17, wherein each of the data units has a length of 187-byte, and wherein the method further comprises adding a sync byte to each start position of the data units.

### Claim 31 (depends on 23)

The apparatus of claim 23, wherein each of the data units has a length of 188-byte.

### Claim 32 (depends on 23)

The apparatus of claim 23, wherein each of the data units has a length of 187-byte, and wherein the container encapsulator further adds a sync byte to each start position of the data units.