KR20000044769A - Method for recording copyright information - Google Patents

Abstract

PURPOSE: A method for recording CONSTITUTION: A method for recording

Description

How to record copyright information

The present invention relates to a method of recording copyright information in a digital TV, and more particularly, to a method of recording storage right information in data information transmitted together with a program transmitted from a broadcasting station to a digital TV or a set-top box.

In order for a viewer to watch a predetermined program transmitted through an airwave, a cable or a satellite through a receiving device such as a TV or a set-top box, a broadcaster that supplies the program through a radio wave or a cable as mentioned above; It must have a receiving device (for example, a TV) that receives it, and a program provider that supplies a program to a broadcasting station so that the three can broadcast and watch the program through a cooperative relationship with each other.

However, in the present situation, the function and weight of a program provider for producing programs such as movies, dramas, and documentaries that are broadcast on TVs is increasing more than viewers of receiving devices such as TVs and broadcasting stations broadcasting them. The market for producing such programs is expected to expand further in the future with the advent of digital TV, and it is thought that a lot of copyright problems will occur due to such expansion.

Internationally, laws and regulations are being strengthened to protect the copyright of such programs, and many laws and methods are currently being proposed to protect the copyright of video media.

On the other hand, a pilot broadcast of digital TV is planned next year, and the video signal of the digital TV is encoded in a packet-based bitstream by MPEG method, which is in the form of a program & system information protocol (PSIP). It is supposed to transmit information about the program.

In this way, the broadcast signal is processed by using the MPEG method, and the encoded bitstream data is transmitted to airwaves, cables, or satellites so that the data can be received and viewed in a digital set-top box or a digital TV. Thus, a plurality of channels may exist. In order to broadcast a program on such a plurality of channels, a plurality of differentiated programs are required.

In the case of digital TV, which uses multiple channels, multiple programs are broadcasted and viewed by viewers. There will also be a lot of copyright problems due to the broadcasting of many programs, and the likelihood of problems such as indiscriminate distribution and theft of programs will increase. Thus, as described above, copyright information is recorded and transmitted in PSIP information included in a digital TV signal and associated with a predetermined program at the time of encoding, and decoded through a set-top box of the digital TV. Then, the subscriber who wants to see the need for a method that can easily know that the copyright of the above-described program in any individual or group, so as to prevent the theft or distribution of the program in advance.

Accordingly, the present invention has been made in order to meet the above-mentioned needs, and its purpose is to record and transmit copyright information in a program broadcast on a digital TV so that viewers can easily identify which group or individual is the copyright of the program. It's about how to make it happen.

In order to achieve the above object, the present invention provides a method for recording copyright information in a digital television that encodes data such as PSIP and video / audio information, comprising the steps of compressing and encoding the video / audio information of a program into one bit string. And constructing the EIT information in the PSIP into one bit string together with other data information, integrating the data bit string and the video / audio bit string into one bit string and encoding the integrated one bit string. And transmitting to the receiving side through the process.

1 is a block diagram of an encoding apparatus suitable for recording copyright information according to a preferred embodiment of the present invention;

2 is a flow chart illustrating the steps of recording information in an EIT in accordance with a preferred embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

100: video / audio encoder 110: data encoder

120: multiplexer 130: transmission path encoder

140: modulator 150: transmitter

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and operation of the present invention.

1 shows a block diagram of an encoding apparatus suitable for recording copyright information according to a preferred embodiment of the present invention. Referring to FIG. 1, the video / audio encoding unit 100 generally uses high-efficiency digital video / audio compression encoding to efficiently transmit a video signal and an audio signal having a large amount of information of an original signal using a limited transmission path. Is performed and transmitted to the multiplexer 120.

The digital TV includes various additional information, and includes a lot of data to implement such additional information. Such data includes electronic programming guide (EPG) information, scramble information, sign information of data, PSIP, and the like. The PSIP includes information such as an event information table (EIT), an extended text table (ETT), a system time information (STI), and a program rating information (PRI). Of these, copyright information is recorded in the EIT as shown in Table 1. Next, an EIT in which copyright information is recorded is shown. Such data information is compressed by the data encoder 110 and transmitted to the multiplexer 120.

Syntax Bits Format event_information_table_section () {table_idsection_syntax_indicatorprivate_indicatorReservedsection_lengthsource_idZeroversion_numbercurrent_next_indicatorsection_numberlast_section_numberProtocol_versionnum_event_in_sectionfor (j = 0; j <num_events_in_section; j ++) {ReservedEvent_idStart_timeReservedETM_locationLength_in_secondstitle_lengthtitle_text () ReservedDescriptors_lengthfor (l = 0; i <N; i ++) {descriptor ()}} CRC_32} 8112121625188882143222208var41232 0xCB'1''1''11'uimsbfuimsbf'00'uimsbf'1'uimsbfuimsbfuimsbfuimsbf'11'uimsbfuimsbf'11'uimsbfuimsbfuimsbf'11'uimsbfuimsbfuimsbf'1111'rpchof

The multiplexer 120 receives a bit string of the compressed video voice from the video / audio encoder 100, and receives a data bit string added to the program from the data encoder 110. These data bit streams are generally packetized separately and then multiplexed into one packet bit stream together with the bit stream of the video and audio. At this time, parameters necessary for broadcasting such as time information are added. In addition, depending on the service, it is necessary to re-multiplex the multiple strings of program units again for multi-channel broadcasting. As such, one bit string including the image / audio / data is transmitted to the transmission path encoder 130.

The transmission path encoder 130 adds an error correction code to the unified bit string received from the multiplexer 120, converts the continuous error into a random error, and performs interleaving to increase the error correction capability. In addition, in order to easily synchronize on the receiver side, the synchronization signal is generally added (framed) to form a bit frame, and transmitted to the modulator 140.

The modulator 140 receives the bit frame from the transmission path encoder 130 and modulates the bit frame. The modulation unit 140 performs digital modulation with high efficiency and good error tolerance in consideration of characteristics of the transmission path. In this way, the modulated bit frame in which modulation is performed is transmitted to the transmitter 150.

The transmitter 150 transmits the digitally modulated bit frame received by the modulator 140 to the receiver through transmission means such as airwaves, satellites, and cables.

2 is a flow chart illustrating the steps of recording information in an EIT in accordance with a preferred embodiment of the present invention. With reference to FIG. 2, this invention is demonstrated in detail.

First, in step 202, the video / audio encoder 100 compresses and encodes video / audio information of a program to configure one bit string.

In step 204, the data encoder 110 records the copyright information, as shown in Table 1, above, of the EIT information in the PSIP to be transmitted together with the above-described program of the compressed coded video / audio information.

The EIT information recorded in this way and other data information other than the above are formed into one bit string (step 206). As shown in Table 1, the copyright information should include the name (name), contact information, contents of copyright, etc. of the copyright holder or the copyrighted organization.

The multiplexer 120 combines the configured data bit stream and the video / audio bit stream into one bit stream (step 208). In step 210, these integrated one bit strings are transmitted to the receiving side through the transmission path encoder 130, the modulator 140, and the transmitter 150, and the bits of the above-described program in the digital TV or digital set-top box. To receive heat.

As described above, the present invention records copyright information in a program broadcast on a digital TV, and transmits the copyright information to the viewer so that the viewer can easily know which group or individual owns the copyright of the program.

Claims (1)

In the copyright information recording method in digital television which encodes data such as PSIP and video / audio information together, Compressing and encoding the video / audio information of the program into one bit string; Constructing copyright information in the EIT information in the PSIP to form one bit string together with other data information; And incorporating the data bit stream and the video / audio bit stream into one bit stream and transmitting the integrated one bit stream to a receiver through an encoding process.