JP5871622B2 - Transmitter - Google Patents

Description

  The present invention relates to a transmitter for transmitting content via a predetermined channel in a digital transmission system or a digital broadcasting system.

  The receivers used for receiving terrestrial digital broadcasts incorporate information on broadcast stations of the same series as known information. For example, when the level of received waves and the transmission quality fall below a prescribed threshold, It is possible to continue viewing a desired program by identifying other channels assigned to the same series of broadcast stations with reference to such known information and receiving the received waves arriving via the channels. There is something to do.

As prior arts related to the present invention, there are Patent Documents 1 to 4 listed below.
(1) “a packet transmission device in a packet transmission / reception system for performing packet communication of data between a packet transmission device and a packet reception device, wherein the packet transmission device inputs data for inputting AV data and non-AV data respectively. An encrypted data generating means for inputting the output of the data input means and executing encryption or encryption information header addition according to a prescribed transmission / reception condition, and a packet header addition means, and the encryption The data generation means includes control means including authentication processing, encryption means, and encryption information header addition means, and the non-AV data includes copy control information and format information of the AV data, and the copy control information and From the format information, the encryption means controls the encryption or the encryption information header. "Adding means for controlling whether or not the encrypted information header is added or not in the adder means" makes it possible to "AV such as digital broadcasting or DVD disk such as MPEG with copyright protection" A packet transmission device characterized in that a means for transmitting content on the IP network while protecting its confidentiality is realized while inheriting its format information and copy control information.

(2) “A device for receiving terrestrial digital television broadcasts, a tuner that selects and outputs a signal of a specified channel from a received signal, and a received signal in the ISDB-T standard from the signal output by the tuner. A mode detection circuit that detects the mode type of the signal and a control unit that controls the tuner and the mode detection circuit, and the control unit acquires information indicating that the mode type is detected by the mode detection circuit. By storing information indicating that a broadcast signal is present in the frequency band of the signal currently output from the tuner in the storage means, digital broadcasting is characterized by “reducing the channel search time” Receiving device ... Patent Literature 2

(3) “A plurality of output signals generated by receiving a digital broadcast signal in which the same content is transmitted as signals of a plurality of layers having different qualities and processing the signals of the plurality of layers by signal processing means, respectively. Among them, it is used in a digital broadcast receiving apparatus that outputs the output signal based on a signal of a selected hierarchy, selects a hierarchy for generating the output signal by determining a reception status of the signals of the plurality of hierarchies, A switching control means for generating a switching signal for outputting a signal of the selected hierarchy, and stopping a part or all of the signal processing means for processing the signal of the non-selected hierarchy; according to the switching signal "With output switching means for switching output signals", it is possible to "switch without video and audio being interrupted, and to reduce power consumption" Digital broadcast receiving circuit characterized by ... Patent Document 3

(4) “In a mobile phone capable of remotely operating a television receiver, a numeric key for selecting a program of the television receiver, a first broadcaster in a predetermined area, and the first broadcaster A channel list registration unit that registers a first channel list that associates the first remote control number assigned to the second remote control number, a second broadcaster in an area where the television receiver is to be viewed, and the second A channel list generation unit that generates a second channel list that associates a second remote control number assigned to a broadcaster of the first broadcaster, and a first broadcaster of the registered first channel list The second broadcaster in the second channel list is collated, and the second broadcaster and the first broadcaster are the same broadcaster, or Or collation for converting the first remote control number into the second remote control number when the second broadcaster and the first broadcaster are capable of broadcasting a program having the same content. When the numeric key corresponding to the first remote control number is pressed, the TV receiver receives a program selection signal based on the second remote control number converted from the first remote control number when the numeric key corresponding to the first remote control number is pressed. Mobile phone characterized in that “the same series or program broadcast by the same broadcaster can be selected with the same remote control number in any region of the country”. Patent Document 4

(5) “Receiving means capable of receiving both multi-segment broadcasts and one-segment broadcasts broadcast from digital terrestrial television broadcasting stations, receiving video / audio signals of TV broadcasts or data broadcasts, and received video / audio signals Output means for outputting video / sound based on the above, emergency warning broadcast start detection means for detecting the start of emergency warning broadcast from the received signal, extraction means for extracting emergency alert release station information from the received signal, emergency warning signal In the receiver with an emergency warning broadcast receiving function, the reception control means for receiving the emergency warning broadcast by performing channel selection control on the receiving means based on the emergency warning broadcast channel selection information. When selecting a station for emergency alert broadcasting, if the terrestrial digital television broadcasting station to which the channel is selected is broadcasting a one-segment broadcast, the one-segment broadcast is favored as the receiving means. The receiver with the emergency warning broadcast reception function characterized in that “disaster information can be obtained more reliably” by being made to receive first ”. Patent Document 5

JP 2005-252773 A JP 2005-348018 A JP 2008-193654 A JP 2008-278413 A JP 2009-044553 A

  By the way, in the above-described conventional example, a program that has become difficult to view due to a decrease in received wave level or transmission quality is the same in other channels assigned to a broadcasting station of the same series as the distribution source of the program. Since the program is not always broadcast, it is not always possible to continue viewing the desired program.

  Note that the continuation of viewing of such a program is, for example, a bit string corresponding to all channels that can be switched by the receiver, and a bit corresponding to a channel used for broadcasting the same program in parallel. Control information in which only the logical value is set to “1” is multiplexed and transmitted on the content of the corresponding program, and the logical value is “1” among the bits included in the control information at the receiver. This can be realized by a technique in which a channel corresponding to a bit is used as an alternative channel.

  However, in such a technology, for example, in terrestrial digital broadcasting, since the total number of channels that the receiver should be able to switch to is several hundred to thousands, it is multiplexed with the content and transmitted. There were many cases where this was not practically possible due to restrictions on the amount of control information that can be transmitted and restrictions on the transmission speed.

  The present invention is the same as or related to a receiver that is used for viewing a desired content without any change in either the hardware configuration or the existing transmission method. An object of the present invention is to provide a transmitter capable of notifying a channel used for redundant transmission of content.

According to the first aspect of the present invention, in the transmitter that broadcasts the content via a specific channel, the multiplexing means may transmit the specific content to the content broadcast to other content that is the same as or related to the content. A product of unique prime numbers individually assigned to other channels provided in parallel with the channel is multiplexed to be broadcasted via the specific channel .

  Such a product of prime numbers is generally used when the ratio of channels that can be applied as the other channels is within a few percent of all the channels provided in the transmission system and broadcasting system to which the present invention is applied. , It can be represented by a short word compared to a sequence of unique bits associated with all the channels.

In a second aspect of the present invention, in the transmitter that broadcasts the content through a specific channel, the multiplexing means transmits the specific content to the content broadcast to other content that is the same as or related to the content. A product of unique prime numbers individually assigned to another channel provided in parallel with the channel and the specific channel is multiplexed to be broadcasted via the specific channel .

  Such a product of prime numbers is generally used when the ratio of channels that can be applied as the other channels is within a few percent of all the channels provided in the transmission system and broadcasting system to which the present invention is applied. , It can be represented by a short word compared to a sequence of unique bits associated with all the channels.

In a third aspect of the present invention, in the transmitter that broadcasts the content via a specific channel, the multiplexing means transmits the specific content to the content broadcast to other content that is the same as or related to the content. The URL of a website that performs notification or posting of a unique prime product individually assigned to other channels provided in parallel with the channel is multiplexed and broadcasted via the specific channel .

  In general, the larger the number of all channels provided in the transmission system and the broadcasting system to which the present invention is applied, the shorter the URL is compared to the unique bit string associated with all these channels. It can be expressed in words.

In the invention according to claim 4 , in the transmitter that broadcasts the content via a specific channel, the multiplexing means transmits the specific content to the content broadcast to other content that is the same as or related to the content. Multiplexing URLs of websites that notify or post products of unique prime numbers individually assigned to the specific channel and other channels provided in parallel with the channel, through the specific channel To be broadcasted.

  In general, the larger the number of all channels provided in the transmission system and the broadcasting system to which the present invention is applied, the shorter the URL is compared to the unique bit string associated with all these channels. It can be expressed in words.

  In a transmission system or broadcasting system to which the present invention is applied, the receiver or terminal used for viewing content transmitted through individual channels is not restricted by the limitations of existing transmission methods. A channel used for parallel transmission of content that is the same as or related to the content can be notified with high accuracy.

  In addition, in a receiver used for viewing content transmitted through a specific channel of a transmission system or a broadcast system to which the present invention is applied, any factor that prevents continuation of reception through the specific channel Even if this occurs, the existing transmission method is not changed, and the hardware configuration is not complicated, and it is multiplexed to the corresponding content through such a specific channel. It may be transmitted in parallel via some channel corresponding to a prime factor of the product of prime numbers and may be subjected to continued viewing of alternative content that is the same or relevant to the relevant content.

  Therefore, according to the present invention, it is possible to provide redundant and stable provision of individual contents without significantly increasing the complexity of the hardware configuration and increasing the cost.

It is a figure which shows one Embodiment of this invention. It is a flowchart of the process which a server performs in this embodiment. It is an operation | movement flowchart of the terminal in this embodiment. It is a figure which shows the structure of TS in this embodiment. It is a figure which shows one form of multiplexing of product Po with respect to the data broadcasting to which this embodiment was applied.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram showing an embodiment of the present invention.
In the figure, transmitters 10-1 to 10-n are individually installed in regions Z1 to Zn where terrestrial digital broadcasting can be viewed, and receivers for terrestrial digital broadcasting are located. In the following, such a receiver will be referred to as a “terminal”, and will be given a code “20” that does not include a suffix number under the assumption that both have the same function and performance.

The transmitter 10-1 includes the following elements.
(1) Encoder 11-1 to which video and audio as program contents are given from a content server (not shown)

(2) Multiplexer 12-1 having a communication port arranged downstream of encoder 11-1 and connected to Internet 30
(3) Transmitter 14-1 disposed downstream of multiplexer 12-1 and connected to the feed point of antenna 13-1 for transmission

Since the configurations of the transmitters 10-2 to 10-n are the same as the configuration of the transmitter 10-1, illustration and description are omitted below.
A server 40 is connected to the Internet 30.

FIG. 2 is a flowchart of processing performed by the server in this embodiment.
FIG. 3 is an operation flowchart of the terminal in the present embodiment.
The operation of this embodiment will be described below with reference to FIGS.

First, the basic operation of each part will be described. In the following, for the matters common to the regions Z1 to Zn (transmitters 10-1 to 10-n), the suffix “1” means that the item can correspond to any of the suffix numbers “1” to “n”. c ”is added to the code of the corresponding component.
The encoder 11-c compresses video and audio given as program content from the content server.

  The multiplexing unit 12-c multiplexes the control information notified from the server 40 via the Internet 30 with the compressed video and audio (FIG. 4 (1)), and is wirelessly transmitted to the terminal 20. A transport stream (hereinafter referred to as “TS”) (FIG. 4 (2)) to be generated is generated. The transmission unit 14-c generates a broadcast wave digitally modulated by the TS generated in this way, and radiates it to the area Zc via the antenna 13-c. In addition, in the container provided in the TS, various contents and information such as subtitle broadcast, data broadcast, program information, and encryption key are arranged in addition to the video and audio.

  On the other hand, the terminal 20 is provided for viewing a desired program according to an instruction given by an operator of the terminal 20 or an instruction given under the initiative of a processor (not shown) provided in the terminal 20. The

The features of the present invention are as follows in the present embodiment.
(1) Content and format of control information multiplexed in the above program content
(2) Procedure of processing performed by the server 40 to generate the control information
(3) Procedure of processing performed by the above-described processor provided in the terminal 20 by referring to such control information

  The server 40 carries out the following processing for any of the regions Z1 to Zn (transmitters 10-1 to 10-n), and thus individually suitable information for the channel Co provided for broadcasting in the corresponding zone Zc. The control information is generated as follows.

(1) The channels C1 to Ck to which programs (contents) broadcast via the channel Co in the corresponding zone Zc are to be transmitted in parallel are specified (step S1 in FIG. 2).
(2) The channels C1 to Ck are uniquely determined for the channel Co, and unique prime numbers p1 to pk assigned to the channels C1 to Ck are obtained (step S2 in FIG. 2).

(3) A product Po of these prime numbers p1 to pk is obtained (step S3 in FIG. 2).
(4) The product Po (including the identifier of the channel Co) is transmitted to the transmitter 10-c via the Internet 30 at a predetermined cycle and frequency (at least every time the channel C1 to Ck increases or decreases). .) Is transmitted (step S4 in FIG. 2).

  When the product Po is delivered from the server 40 in this way, the multiplexing unit 12-c provided in the transmitter 10-c should be broadcast via the channel Co indicated by the identifier included in the product Po. The product Po is multiplexed and incorporated in control information to be multiplexed into video and audio (both compressed) (FIG. 4 (3)).

  Accordingly, the product Po is included as control information in the TS wirelessly transmitted to the terminal 20 via the channel Co in the region Zc.

  On the other hand, in the terminal 20, a program received via the channel Co (hereinafter, a program identifier indicated by program information multiplexed on the TS of such a program is referred to as “IDo”) is an object to be viewed. In this state, the product Po included in the control information received via the channel Co is extracted at a predetermined frequency and cycle, and the transmission quality (reception of the TS received via the channel Co is received). May be wave level).

  Further, the terminal 20 determines whether or not the transmission quality has fallen to such a degree that it falls below a prescribed lower limit under such monitoring (step S1 in FIG. 3), and the transmitter 10-c (antenna 13-c). When the transmission quality falls below the lower limit value U due to an increase in propagation loss of the wireless transmission path formed between the two, the arrival of interference waves or jamming waves, the movement of the terminal 20, etc. Process.

(1) The prime factors p1 to pk of the latest product Po received normally in advance are obtained (step S2 in FIG. 3), and the channels C1 to Ck respectively corresponding to these prime factors p1 to pk are specified (step 3 in FIG. 3). S3).

(2) Among the channels C1 to Ck thus identified, an alternative channel Cos that satisfies all or part of the following requirements (2-1) to (2-5) is selected (step S4 in FIG. 3). .
(2-1) Transmission quality (may be a received wave level) is equal to or higher than a prescribed threshold th (> U).
(2-2) Transmission quality (may be the level of the received wave) is the best.

(2-3) The multiplexed program identifier is equal to the above-described IDo.
(2-4) The program identifier received after multiplexing means a predetermined relevance to the above-mentioned IDo.
(2-5) Transmission speed is maximum.

(3) Instead of the program and control information received via the channel Co, the program and control information received via the alternative channel Cos are employed (step S5 in FIG. 3). As for these channels Co and Cos, information indicating both the radio frequency (band) in which the corresponding channel is formed (arranged) and the segment into which the radio frequency (band) is divided. Represented and identified as a set.

  By the way, with respect to the ratio of the information amount of the primes p1 to pk or the product Po, generally, the total number of physical channels that can be comprehensively adopted in the corresponding broadcasting system and transmission system is large, and the same or related broadcasting Therefore, the smaller the number of channels that can be applied, the smaller the value. Such a related broadcast corresponds to, for example, a live broadcast of horse racing and other specific events performed in parallel by different broadcasters.

  For example, according to the result of the simulation conducted by the applicant of the present application, the number of radio frequency bands allocated to the corresponding broadcasting system and transmission system is “50”, and all of these frequency bands are divided into 13 segments. In addition, if each segment is individually applied to transmission of a desired program, 20 segments corresponding to about 3 percent of the total number of segments “650” (= 13 × 50) are the same (or Since related programs are transmitted in parallel, the amount of information is suppressed to about 84 bits, which is significantly smaller than a 650-bit bit string individually corresponding to these 650 segments.

  In addition, such an amount of information is an acceptable short word even if the number of segments in which the same (or related) program is transmitted in parallel is 32 segments (corresponding to about 5 percent). It can be held down for a long time.

  Furthermore, when the product Po is expressed as an integer, the information amount can be further reduced by being expressed in any of the following forms.

(1) Each digit of the corresponding integer is expressed as a hexadecimal number or 62 (numbers “0” to “9” and the total number of uppercase and lowercase alphabetic 52 characters).
(2) The integer is represented by fixed-length binary data consisting of a predetermined number of bytes.
(3) The integer is expressed as “binary data including a predetermined number of byte strings and including binary data indicating an effective word length”.

  However, the above (2) and (3) are not suitable for transmission of a program in which character information cannot be included as content.

  In other words, the terminal 20 uses the excess transmission capacity without causing both the basic change of the broadcasting system and the excessive reduction of the transmission speed to be achieved by the system, thereby reducing the transmission quality. The alternative channel Cos of the channel Co that has been used for receiving a broadcast that has become difficult to view due to the above is automatically selected and applied.

  Therefore, according to the present embodiment, it is possible to continue viewing the same (or related) program whose transmission quality has deteriorated for some reason during viewing, as well as emergency broadcasting.

  In the present embodiment, the process of obtaining the prime factors p1 to pk of the product Po and specifying the channels C1 to Ck respectively corresponding to these prime factors p1 to pk is performed by, for example, the channels C1 to Ck corresponding to the product Po in advance. The process of referring to the registered table may be simply realized without performing prime factorization or the like. Such a table is not necessarily provided in the transmitter 10-c. For example, the table is stored on a storage device in which information appropriately notified from an external website or database via a communication path such as the Internet is stored. It may be arranged.

In the present embodiment, the process for obtaining the prime factors p1 to pk of the product Po may be performed by any of the following algorithms.
(1) An algorithm performed by referring to a prime number table in which prime numbers are registered in advance (which may be incorporated in advance in the terminal 20 or configured so that the terminal 20 can be appropriately referred to via some communication means).
(2) An algorithm that simply finds an integer x (≧ 2) smaller than the square root of the product Po, and simply tries to divide the integer that reaches x in ascending order from “2”.

  Further, in the present embodiment, a desired number of images to be transmitted via a large number of segments (for example, 12 segments, 4 segments, 1 segment) may be multiplexed on the TS.

  In the present embodiment, the configuration and contents of the TS are not necessarily limited to those conforming to digital broadcasting (ISDB: Integrated Services Digital Broadcasting) such as a terrestrial digital broadcasting system. For example, DVB adopted overseas. The present invention can be similarly applied even if it complies with the standard or the ATSC standard.

  Further, in the present embodiment, the product Po is delivered to the terminal 20 by being placed in the predetermined field of the control information described above.

  However, such product Po may be delivered to the terminal 20 in any of the following forms, for example, when the present invention is applied to area one-segment data broadcasting.

(1) Character information embedded in a “meta” tag of data broadcasting, such as “115” (= prime number “23” × prime number “5”) shown with hunting in FIG.
(2) Text information with the same background color as the data broadcast and transmitted as the content of the data broadcast

(3) Character information that indicates the URL of the web page on which the product Po is posted (or a website that provides the product Po as a web service) and is transmitted as data broadcasting content

  In the present embodiment, when the terminal 20 is equipped with two tuners, one of these tuners is used for viewing a broadcast received via the channel Co described above, and the other is By being applied to the selection of the alternative channel Cos described above with a predetermined frequency (cycle), it may be used to realize smooth (rapid) continuation of viewing of a broadcast that has become difficult to view.

  Furthermore, in the present embodiment, an area one segment by “bundle segment” or “barase segment” in which a plurality of segments individually provided for one segment broadcasting are arranged adjacent to each other on a frequency axis of a predetermined band or at predetermined intervals, respectively. The same applies to broadcasting.

  Further, the present invention is not limited to the digital broadcasting system, and can be similarly applied to the following uses, for example.

(1) Switching to an alternative system according to the failure of the distribution source or congestion of the transmission path in live video streaming such as USTREAM performed over the Internet
(2) Substitution or load balancing by different websites performed according to web server failure or overload (including transmission line congestion)

  Furthermore, when the present invention is applied to the live video streaming, the product Po may be delivered to the terminal 20 in the following form.

(1) It is embedded in a specific tag such as a “meta” tag included in HTML or the like delivered from a website indicated by the URL of the video content (program) to be distributed.
(2) It is embedded as character information having the same color as the background color of the part in a predetermined part such as HTML.

(3) Provided as the contents of a website or website indicated by a specific URL included in the HTML or the like.
(4) Processing such as encryption or compression is performed or directly embedded in a specific part of the URL.

  In addition, the present invention is not limited to continuation of viewing by alternative broadcasting or content, but for example, to provide information to be selected based on a predetermined procedure or in an arbitrary order as listed below. Is equally applicable.

(1) Car number of a specific vehicle such as a green car or restaurant car that should be notified for each train such as the Shinkansen
(2) First class and business class seat numbers to be notified for each flight
(3) Items to be notified about the operation unit including a plurality of switches, for example, items to be set to ON or OFF (may be identifiers of the operation unit corresponding to the items)

  Further, the product Po may be applied not only to indicate alternative channel Cos candidates as prime factors p1 to pk, but also to detection of transmission errors (presence / absence) depending on whether or not the following criteria are satisfied, for example. .

(1) The prime factors obtained by prime factorization of the product Po do not overlap.
(2) Whether the product Po is within a predetermined range.
(3) Whether the product Po is registered in the above-mentioned table.
(4) Whether the prime factor of the product Po is within a predetermined range.

  Further, in the present embodiment, the product Po and the criteria (including the above table) to be applied to obtain the alternative channel Cos based on the product Po are not necessarily constant. May be updated as appropriate.

(1) When the product Po and the above-mentioned standard can change according to the movement of the terminal 20, etc., good transmission is possible when the transmission quality already described is below the lower limit value U or the level of the received wave is below the threshold value. It is updated based on the product Po and other control information delivered via other channels that can be received with quality.

(2) The product Po that has been successfully delivered in advance is different from the product Po ′ that has been received most recently if it can change according to the change in the delivery schedule of the program to be performed by the transmitter 10-c. Sometimes the product Po is replaced by the product Po ′, and the above criteria are updated to criteria that are compatible with the new product Po.

  Furthermore, in the present embodiment, the processing performed by the terminal 20 (the processor provided therein) according to the product Po described above includes both or either of the following processing (1) and (2). Also good.

(1) When the product Po is “0”, it is understood that there is no both or either of the same program as the program broadcast through the channel Co and the related program, and the processing described above Of these, related processing is omitted.

(2) When the product Po is “1”, the same program is broadcast on all channels (segments) arranged in the same frequency (band) as the channel Co or in all other frequencies (bands). On the premise of this, for example, by selecting a channel having the maximum transmission quality and reception electric field strength as the alternative channel Cos, the simplification and efficiency of the process of specifying the alternative channel Cos is realized. In such a case, in a situation where the product Po cannot be normally received via the channel Co, the product Po is replaced with the product Po received via another channel whose transmission quality exceeds a predetermined threshold value. Also good.

  Further, in the present embodiment, none of the prime factors p1 to pk of the product Po may be assigned to the channel Co described above.

  Further, the configuration of the hardware of the present invention and the form of linkage (distribution of functions and loads) by individual hardware are not limited to those in FIG. 1 and the above-described embodiment. Anything can be used.

  In the present embodiment, information indicating the difference or relationship between a program (content) transmitted through the channel Cos and a program (content) transmitted through the channel Co is the product Po described above. Even if the receiver 20 acquires the information and provides it to the user or the like in an appropriate form by being multiplexed together with the channel Co, the service quality and usability can be improved. Good.

  Further, the present invention is not limited to the above-described embodiments, and various configurations can be made within the scope of the present invention, and any improvement may be applied to all or some of the components.

  Hereinafter, among the inventions disclosed in the present application, those not described in “Claims” are described in the “Claims”, “Means for Solving the Problems”, and “Effects of the Invention”. List them in a format according to.

[Claim 5 ] In the transmitter according to any one of claims 1 to 4 ,
The product of the prime numbers is
The transmitter is represented by a decimal number equal to the total number of codeword modes that can be transmitted under the transmission method used for transmitting the content.

5. The transmitter according to claim 1, wherein the prime product is a codeword that can be transmitted under a transmission method used for transmitting the content. It is expressed in a decimal number equal to the total number of modes.

  In other words, the unique prime numbers individually assigned to other channels multiplexed to the content and used for the parallel transmission of the content that is the same as or related to the content, and the product of these prime numbers have a large number of the above-mentioned decimal numbers. It is expressed with a short word length.

  Therefore, in the transmission system and the broadcasting system to which the present invention is applied, the excess transmission capacity of the transmission method applied to the system is used more efficiently, and parallel transmission through a plurality of channels of redundant content, Flexible provision of such redundant content terminals is realized.

[Claim 6 ] In the transmitter according to any one of claims 1 to 4 ,
The multiplexing means includes
A transmitter characterized by multiplexing the product of the prime numbers with the other content as information that does not affect the appearance or viewing of the content.

In the transmitter having such a configuration, in the transmitter according to any one of claims 1 to 4 , the multiplexing unit may use the other content as information that does not affect appearance or viewing of the content. The product of the prime numbers is multiplexed.

  That is, the unique prime product given to other channels that are being used for parallel transmission of content that is the same or related to the content being transmitted over a particular channel is embedded in these content Despite being transmitted, the quality of the corresponding content is not a factor.

  Therefore, in the transmission system and the broadcasting system to which the present invention is applied, the redundant transmission capacity of the transmission method applied to the system is used more efficiently, so that redundant contents are transmitted in parallel via a plurality of channels. And flexible provision of such redundant contents to the terminal is realized.

[Claim 7 ] In the transmitter according to any one of claims 1 to 4 ,
The multiplexing means includes
When there is no other channel, “0” is multiplexed as the product of the prime numbers with the other content.

In the transmitter having such a configuration, in the transmitter according to any one of claims 1 to 4 , the multiplexing means sets "0" as a product of the prime numbers when there is no other channel. Multiplexed in the other content.

  That is, in a receiver or terminal that is used for viewing content received through a specific channel, the specific channel is set under the process of identifying a unique state in which the product of the prime numbers is “0”. It is possible to make up for the replacement of that particular channel with other channels that are being offered for parallel transmission of content that is the same or related to the content being transmitted through.

  Therefore, any content transmitted through a specific channel is the same or related to the corresponding content, and the same regardless of the presence or absence of content transmitted in parallel via other channels Transmission in a transmission format is possible.

[Claim 8 ] In the transmitter according to any one of claims 1 to 4 ,
The multiplexing means includes
A transmitter that multiplexes “1” as the product of the prime numbers to the content when all of the other channels are provided for broadcast of other content that is the same as or related to the content. .

In the transmitter having such a configuration, in the transmitter according to any one of claims 1 to 4 , the multiplexing unit may transmit the other content to a broadcast of other content that is the same as or related to the content. When all of the channels are provided, “1” is multiplexed into the content as the product of the prime numbers.

  That is, in a receiver or terminal that is used for viewing content received via a specific channel, the specific channel is set under the process of identifying a unique state in which the product of the prime numbers is “1”. It is possible to easily identify that all of the other channels that are used for parallel transmission of content that is the same as or related to the content that is being transmitted through are provided.

  Therefore, any content transmitted through a specific channel is urgent regardless of the presence or absence of content that is the same as or related to the corresponding content and is transmitted in parallel through other channels. Flexible and quick adaptation to smooth simultaneous transmission of information and the like becomes possible.

[Claim 9 ] In the transmitter according to any one of claims 1 to 8 ,
The multiplexing means includes
The transmitter, wherein the content is multiplexed with identification information indicating the difference or relevance with the other content, and is set as the broadcast target.

In the transmitter configured as described above, in the transmitter according to any one of claims 1 to 8 , the multiplexing unit identifies the content indicating a difference or relationship with the other content. Information is multiplexed to be the target of the broadcast.

  That is, in a receiver or terminal that is used for viewing content received via a specific channel, the relationship between the content received via the channel instead of the specific channel and the content that was previously received Can be identified.

  Therefore, in a receiver used for viewing content provided via a system to which the present invention is applied, service quality and usability related to the provision of such content are improved.

10 Transmitter 11 Encoder 12 Multiplexer 13 Antenna 14 Transmitter 20 Terminal 30 Internet 40 Server

Claims (4)

A transmitter that broadcasts content over a specific channel,
The content is multiplexed with a product of unique prime numbers individually assigned to other channels provided in parallel with the specific channel for broadcasting of other content that is the same or relevant to the content , A transmitter comprising multiplexing means for broadcasting through a specific channel . A transmitter that broadcasts content over a specific channel,
A unique prime number individually assigned to the specific channel and another channel provided in parallel to the specific channel for broadcasting of other content that is the same or related to the content A transmitter comprising multiplexing means for multiplexing products to be broadcasted via the specific channel . A transmitter that broadcasts content over a specific channel,
The content is notified or posted of a unique prime number product individually assigned to another channel provided in parallel with the specific channel for broadcasting of other content that is the same as or related to the content. A transmitter comprising multiplexing means for multiplexing URLs of websites and making them broadcast through the specific channel . A transmitter that broadcasts content over a specific channel,
A unique prime number individually assigned to the specific channel and another channel provided in parallel to the specific channel for broadcasting of other content that is the same or related to the content A transmitter comprising: multiplexing means for multiplexing URLs of websites to notify or publish products to be broadcast through the specific channel .