JPH1169321A - Multiplex data program organization system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively use a broadcasting radio wave and to facilitate data multiplex broadcast program organization. SOLUTION: A packet (dummy packet) without data to be broadcast, which is generated in data multiplex broadcasting, can effectively be used as a transmission channel resource. A private logic channel identification 2-code is used for the dummy packet, data of program guidance is inserted and a user selects it so as to use it. A data multiplex broadcast program (filler packet) broadcast by a packet (filler packet) used as such transmission channel resource can arbitrarily cyclically and repetitively broadcast or can be broadcast only for one time. A reception device automatically receives the packet to which the private logic channel identification 2-code is added and can take in the data. When the user does not select the specified program and the reception device in a standby state, data can automatically be displayed and push-type data multiplex broadcast can be executed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multiplex data broadcasting program scheduling system which is carried out by using a part of a broadcast wave.

[0002]

2. Description of the Related Art In today's information age, multiplex broadcasting, which broadcasts digital data or facsimile data in addition to conventionally broadcast audio or images, has attracted attention. During these multiplex broadcasts, stereo broadcasts using FM broadcast waves and television broadcast waves have been put into practical use in Japan, and audio multiplex broadcasts and teletext multiplex broadcasts using television broadcast waves have come into practical use. ing. In the United States, facsimile broadcasting using FM broadcasting waves has been put to practical use, and in Japan, broadcasting using television broadcasting waves has been studied. Data broadcasts using FM broadcast waves and television broadcast waves are being implemented in Japan.

[0003] During these multiplex broadcasts, teletext multiplex broadcasts are multiplexed and broadcast using a retrace period of a video signal. Television facsimile multiplex broadcast, television data multiplex broadcast, FM facsimile multiplex broadcast and FM
Data multiplex broadcasting is multiplexed with audio signals and broadcast.
Under such circumstances, the present inventors have filed Japanese Patent Application No. 6-122.
No. 389 proposed a television multiplex broadcasting system in which a facsimile signal or a data signal is multiplexed using a second subcarrier in addition to a first subcarrier multiplexed in an audio band.

[0004] In these multiplex broadcasts, information that many people are interested in, such as news programs, stock information programs, exchange information programs, traffic information programs, weather information programs, event information programs, various market programs, and various reservation status programs. Programs are being broadcast, and some of them are constantly changing information programs.

In order to multiplex and broadcast data using analog television broadcast waves, a vertical blanking period of an image signal is required.
(Vertical Blanking Interval: VBI) multiplexed on the horizontal scanning line and broadcast, and multiplexed on the sub audio band of the audio signal and broadcast. As data broadcasting using VBI, teletext broadcasting has been in practical use for a long time.
In Japan, 14H, 15H, 16H, 2 in VBI
22 bytes (= 176 bits) of data are multiplexed on a total of eight scanning lines of 1H, 277H, 278H, 279H and 284H, and 22 × 8 × 30 = 5,280 bytes (= 42,240 bits) per second ) Data is being broadcast.

Until now, there was a limit on the data that can be broadcast by teletext, and it was not possible to broadcast character data or graphics data and data other than these control data. There is a demand to broadcast data other than data, such as binary data such as a computer program, digital audio data or digital image data, and 10H to 13H and 273H to 276H which have not been conventionally used for scanning lines in VBI. A data broadcast for broadcasting data other than the character data or the graphics data at a rate of 5,280 bytes per second by using a total of eight scanning lines has been started.

FIG. 1 shows the signal format of the scanning line multiplex data broadcasting used in the first embodiment of the present invention. In addition,
In this figure, the polarity of the signal is shown in reverse. In this figure, (a) is the signal of the first field of the television signal, (b) is the signal of the second field, and the lower part of these shows the horizontal / vertical synchronization pulse and the equivalent pulse, The signal shown on the upper side is a signal inserted into the horizontal scanning line.

In the signal of the first field shown in FIG. 1A and the signal of the second field shown in FIG.
3H and 7-9H, latter half of 263H to 265H and 27
Scan lines in the latter half of 0H to 272H are equivalent pulses, 4 to 6
The scanning lines in the latter half of H and 266H to the first half of 269H are vertical synchronizing pulses, and no signal is inserted into the horizontal scanning lines in this portion. Television image signals are 22-262H and 26
3H scan line and 285H second half scan line, 286-5
It is inserted in the first half of the scanning lines of 24H and 525H.
Therefore, scanning lines of 10-21H and 273-284
H scan lines are available for various signal insertions,
Since 及 び 20H and 280 さ れ 283H are used for broadcast operation, the actual available ones are 10１６16H,
21H and 273-279H, 284H scanning lines.

Teletext multiplex broadcasting has already been performed as scanning line multiplex data broadcasting.
16H, 21H scanning lines and 277-279H, 284
H scanning lines are used. Also, 21H and 284
A subtitle program signal may be inserted into the H scanning line.
Therefore, the scanning lines that can be used in the scanning line multiplex data broadcasting of the first embodiment of the present invention are 10 to 13H, 273.
276H in total.

As described above, the number of scanning lines that can be used in the scanning line multiplex data broadcasting is eight, but when data multiplex broadcasting is actually performed, the corresponding positions in the first field and the second field are used. Are used in combination. That is, a scan line of 10H of the odd field and 273H of the even field, 1
Four sets of data transmission channels are used which combine scanning lines of 1H and 274H of even fields, scanning lines of 12H of odd fields and 275H of even fields, and scanning lines of 13H of odd fields and 276H of even fields. You. The combination of these scanning lines is called a slot line.

FIG. 2 shows a format in which a data signal is multiplexed on a horizontal scanning line during a vertical blanking period. In this figure, reference numeral 1 denotes a video signal, and a portion sandwiched between a horizontal synchronization pulse 2 and the next horizontal synchronization pulse 3 is a horizontal scanning line into which a signal is inserted, and a color burst signal 4 is inserted immediately before the signal. Color burst signal 4
Is followed by a 296-bit data line 5.

The data line 5 will be further described with reference to FIG. As shown in (a), the data line 5 having a data capacity of 296 bits is composed of a synchronization section 6 having a data capacity of 24 bits and a data packet section 7 having a data capacity of 272 bits. As shown, the data packet section 7 is composed of a bit synchronization code 8 having a data capacity of 16 bits and a byte synchronization code 9 having a data capacity of 8 bits.
Is composed of a packet prefix 10 having a data capacity of 14 bits, a data block 11 having a data capacity of 176 bits, and a check code 12 having a data capacity of 82 bits, as shown in FIG. As shown in (d),
The packet prefix 10 is a logical channel identifier 2 (Logical Channel Identifier 2: L
CI2) code 13, scramble control (SCC) code 2 with data capacity 2 bits, continuity index (CI) code 1 with data capacity 4 bits
5 and 2-bit data capacity data group control (Data
group Transport Control (DTC) code 16. Note that logical channel identification 1 (Logical Chann
el Identifier 1: LCI1) code is a code indicating a slot line to be used. The multiplexed data is inserted into the data block 11 of the data line 5. The data packet part is called a slot.

Since the data capacity of the logical channel identification 2 code 13 is 6 bits, 64 identification codes of 6 bits = 64 can be used, but 31 of them are already used in teletext broadcasting and the like. In data multiplex broadcasting, 30 logical channel identification codes for identifying data multiplex programs, time signals, and transmission control data (Transport Control Data)
trol Data (TCD) code and operation signal, which are 33 kinds of identification codes in total.

The data block of the packet to which the TCD code is added includes LCI1 code information and the LC of other packets.
I2 code information is mounted, and this information allows other L
It is possible to know the content of each packet to which the CI2 code is assigned and the slot line used. In addition, TCD
Unless the LCI2 code information is changed by the packet to which is added, different program data cannot be transmitted by the same LCI2 code.

[0015] Therefore, the receiver receives the packet to which the TCD code is assigned with the highest priority, so that the LCI1 code and the LCI1 code necessary for receiving the desired multiplexed data are received.
A CI2 code is obtained, a slot line on which necessary data is multiplexed is selected by an LCI1 code, a program is selected by an LCI2 code, and a data packet having the same LCI2 code inserted in a specified slot line is added. , And reconstructing the data from the collected data packets, one program data is restored.

Further, it has been standardized that an analog facsimile signal is multiplexed in addition to a stereo signal or a sub-audio signal which has been multiplexed in the sub-audio band of FM-modulated television audio, but has been newly added. Audio multiplexed data broadcasting that multiplexes digital data of one or two channels (Television Sound channel Datamu
ltiplexing (TSD) was disclosed by the present inventors in
No. 336611, Japanese Patent Application Laid-Open Nos. 7-336656, 9-168137 and 9-181997.

FIG. 4 shows a data line of the audio multiplex data broadcast. As shown in (a), a data line having a data capacity of 296 bits is composed of a mode controller (MC) 17 having a data capacity of 24 bits and a data packet section 18 having a data capacity of 272 bits. The data line located at the beginning of the frame described in
ller: FC) 19 is added. Data packet section 18
As shown in (b), a packet prefix (Packet PreFix: PF) 20 having a data capacity of 14 bits and a data block (DATa block: 176 bits) having a data capacity of 176 bits.
DAT) 21 and a check code (CH
eck Code (CHC) 22. As shown in (c), the packet prefix 20 is a logical channel identification 2 (Logical Channel identification) having a data capacity of 6 bits.
Identifier 2: LCI 2) code 23, scramble control (SCC) code 24 with a data capacity of 2 bits, continuity index (Continuity In) with a data capacity of 4 bits
(dex: CI) code 25 and a data group transport control (DTC) code 26 having a data capacity of 2 bits. Note that the logical channel identifier 1 (Logical Channel Identifier 1: LCI1) code is
This is a code indicating a multiplex channel to be used. The multiplexed data is inserted into the data block 21. The data packet part is called a slot.

The logical channel identification 2 code 23 is used in common with the scanning line multiplex data broadcasting, and codes, time signals, and transmission control data (Transport Control Data: TCD) for identifying 30 logical channels for identifying data multiplex broadcasting programs. )
It is composed of a total of 33 types of identification codes of codes and operation signals.

The data block of the packet to which the TCD code has been added includes LCI1 code information and LC of other packets.
I2 code information is mounted, and this information allows other L
It is possible to know the content of each packet to which the CI2 code is assigned and the multiplex channel to be used. In addition, TCD
Unless the LCI2 code information is changed by the packet to which is added, different program data cannot be transmitted by the same LCI2 code.

Therefore, the receiver receives the packet to which the TCD code is assigned with the highest priority, and thereby the LCI1 code and the LCI1 code necessary for receiving the desired multiplexed data are received.
A CI2 code is obtained, a channel on which necessary data is multiplexed is selected by an LCI1 code, a program is selected by an LCI2 code, and data packets with the same LCI2 code added to a specified channel are collected. By reconstructing the data from the collected data packets, one program data is restored.

The transmission channels that can be used in the scanning line multiplex data broadcasting are a scanning line of 10H in the odd field and 273H in the even field, a scanning line of 11H in the odd field and 274H in the even field, and 12H in the odd field.
And 275H scan lines in the even field, and 4 sets of slot lines formed by combining 13H scan lines in the odd field and 276H scan lines in the even field. These are separately managed in the conventionally proposed data multiplex broadcasting. ing. The multiplex data is transmitted in units of multiplex programs.

Therefore, the data transmission rate for each multiplexed program is constant at one packet per field, and when a large amount of multiplexed program data is transmitted, it takes a long time to transmit the data. The other programs that are scheduled to be transmitted to the computer will be kept on standby for a long time.

In order to cope with such a situation, the present inventors disclosed in Japanese Patent Application No. Hei 9-19842 a plurality of data multiplexing channels which were conventionally occupied until the multiplexed data program ended. Are used alternately. In addition, one data program which has been conventionally multiplexed using only a single channel is multiplexed to a plurality of data multiplexing channels. Further, in order to perform such a data program organization, a standard transmission system design method and a large number of data transmission bit rate classes in a data multiplex broadcasting service are set by forming a group of data packets of a plurality of data programs. Suggested ways to do it.

In such data multiplex broadcasting, transmission of a multiplex data program is performed by securing packets for each multiplex data program according to a predetermined transmission schedule. Does not necessarily match the number of slots required. If the number of secured packets is smaller than the number of packets required by the program, all data cannot be transmitted and the use of data will be hindered. The number is made larger than the number of packets required by the program.

As a result, packets that do not normally have data to be transmitted often occur. Since any data cannot be inserted into a packet even if an empty slot occurs in this way, a logical channel identification 2 (LCI2) code as an operation signal is assigned to such an empty packet, and a data packet portion is assigned to the empty packet. Is transmitted without inserting any data. This packet is called a dummy packet because it is formally inserted.

Further, the receiver side for receiving the data multiplex broadcast receives the transmission control data (TCD) code for designating the type of the data multiplex broadcast program and the logical channel for transmitting the signal constituting the program, and so forth. Cannot receive a multiplexed data program, a dummy packet is transmitted between two fields after receiving a TCD code, for example, as notified by the Ministry of Posts and Telecommunications. That is, following the TCD code, eight dummy packets are transmitted.

[0027]

SUMMARY OF THE INVENTION In view of such a situation, the present application proposes effective use of slots, effective use of radio waves, and simplification of data multiplex broadcast program configuration. Therefore, a method is proposed in which a set of slots having no data to be broadcast generated at various timings is effectively used as a transmission channel resource for data multiplex broadcast program transmission. Further, a push-type data multiplexing method in which data is fetched using a data multiplex broadcast program (filler program) broadcasted in a packet (filler packet) used as a transmission channel resource without a user performing a special operation. Realize broadcasting.

For this purpose, in the present application, a dedicated logical channel identification 2 code is used for a packet transmitted as a filler program, and data such as a program guide is inserted so that the user can use the data by selecting it. In this case, the receiving apparatus can automatically receive the packet to which the dedicated logical channel identification 2 code is attached and take in the data. This data can be automatically displayed when the device is in a standby state. Such a filler program can be arbitrarily broadcast in a cyclic manner or broadcast only once.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIGS. 5 to 7 show Embodiments 1 and 2 in which the present invention is applied to scanning line multiplex data broadcasting, and FIGS. Embodiments 3 and 4 according to Embodiment 10 and Embodiments 5 and 6 in which the present invention is applied to audio multiplex data broadcasting according to FIGS.
Embodiment 7 and Embodiment 8 will be described with reference to FIGS. In these figures, the data packet indicated by the inverted character is the end data packet of the data group.

In FIGS. 5 to 11, the slot line and the slot are arranged on the same axis for convenience of explanation.
Time relationships are indicated by fields. Therefore, 10H on slot line 1 is in the odd field, 273H is in the even field, and slot line 2 is
The upper 11H is in the odd field, 274H is in the even field, 12H on slot line 3 is in the odd field, 275H is in the even field, 13H on slot line 4 is in the odd field, and 276H is the even field. Each exists in the field. For convenience of explanation, the field is divided every 60 fields, that is, every 1 second, and only one data packet included in one data group is inserted in one field. It is also possible to classify and insert data packets included in a plurality of data groups into one field.

In these embodiments, 16 data groups [a] to [p] are transmitted first, and after transmission of data packets of the data groups [a] to [p] is completed, the data groups [q], Data packets [r], [s],... Are transmitted. The data packet included in each data group is such that the data group [a] is a1 to a1.
a188, data group [b] is b1 to b146, data group [c] is c1 to c159, data group [d] is d1 to d68, and data group [e] is e1 to e1.
e152, data group [f] is f1 to f184, data group [g] is g1 to g105, data group [h] is h1 to h114, and data group [i] is i1.
To i196, data group [j] is j1 to j157,
Data group [k] is k1 to k145, data group [l] is 11 to 1105, and data group [m] is m
1 to m77, data group [n] is n1 to n68, data group [o] is o1 to o118, data group [p] is p1 to p34, data group [q] is q1 to q102, and data group [r ] Is r1 to r33
It is. These data packets were sent to the prior application of Japanese Patent Application No.
It is organized according to the multiplex data program organization system proposed in US Pat.

In this case, the fields required for transmitting each data group include 47 fields for data group [a], 37 fields for data group [b], 40 fields for data group [c], and data group [d].
Are 17 fields, data group [e] is 38 fields, data group [f] is 46 fields, data group [g] is 27 fields, data group [h] is 29 fields, and data group [i] is 49 fields.
Field, data group [j] is 40 fields,
Data group [k] has 27 fields, data group [l] has 27 fields, and data group [m] has 2 fields.
There are 0 fields, 17 fields for data group [n], 30 fields for data group [o], and 9 fields for data group [p], for a total of 500 fields.

Transmission of these data groups requires transmission control data (TCD) codes of TCD1 to TCD4.
If we need dummy packets for the field,
Four fields are required for transmitting a TCD packet and two fields are required for transmitting a dummy packet.

Embodiments 1 and 2 of the present invention will be described with reference to FIGS. FIG. 5 shows Embodiments 1 and 2 of the present invention.
1 is an example of a data program scheduling pattern of the invention of the prior application which is an object of the invention. In the data program scheduling pattern of the prior application, in order to facilitate data transmission management of each data group, the time required for transmitting all data packets of each data group is equal, and all data groups are transmitted within 60 fields per second. Is transmitted without fail and the data program scheduling pattern is repeated. In this case, when transmission of all data packets included in a certain data group is completed, a dummy packet (DMY) is inserted into an empty slot. As a result, the data program is organized as shown in FIG. In this figure, the description of the intermediate part is omitted. When the transmission of the first 16 data groups is completed, a new TCD code is transmitted, and similar data programming is performed.

FIG. 5 will be specifically described. The four slot lines into which data is inserted by the scanning line multiplex data broadcasting method are not transmitted at exactly the same time, but are all transmitted at different times. That is, each slot is in field 1
-1 slot 1, field 1-1 slot 2, field 1-1 slot 3, field 1-1 slot 4, field 2-1 slot 1, field 2
-1 slot 2, field 2-1 slot 3, field 2-1 slot 4, field 3-1 slot 1, field 3-1 slot 2, field 3
-1 slot 3, field 3-1 slot 4, field 4-1 slot 1, field 4-1 slot 2, field 4-1 slot 3, field 4
-1 slots 4... Are transmitted in this order.

In order to simplify the data packet transmission management, the configuration of the slot line unit is changed to terminate the transmission of the data group that has been transmitted or to start transmission of a new data group. Unless necessary, the configuration of the slot line unit is used repeatedly without being changed.

The user who receives the scan line data multiplex broadcast first needs the LCI necessary to receive the desired multiplex data.
It is necessary to receive a packet to which a TCD code provided with a 1 code and an LCI2 code is attached (hereinafter, referred to as a “TCD packet”) with the highest priority. Therefore, in the scanning line data multiplex broadcasting, a packet to which a TCD code is first added is transmitted. Since the amount of data that can be loaded in one packet is 22 bytes, usually a plurality of packets,
For example, in the case of this example, a TCD code is assigned to four packets. As described above, since data packets are transmitted using all four slot lines, these TCD packets are also transmitted using all four slot lines. In the case of this example, the TCD is used in the slots of the first to fourth fields of the slot lines 1 to 4 of the first second.
Packets [TCD1] to [TCD4] are transmitted.

Subsequently, the receiving device which has received the TCD packet prepares the fourth data to prepare for receiving the desired data packet.
A dummy packet to which an LCI2 code as an operation signal is added is inserted into eight slots of the field and the fifth field.

Thereafter, the transmission of the data packet is started. First, [a1] to [a1] to 20 slots of the seventh to eleventh fields included in the data group a are included.
The data packet of [a20] is inserted, and then the data packets of [b1] to [a16] included in the data group b are inserted into 16 slots of the twelfth to fifteenth fields, and then the sixteenth data packet is inserted. Field-1st
Data packets [c1] to [c16] included in data group c are inserted into 16 slots of 9 fields. Thereafter, similarly, [o1] to [o1] included in the data group o in the four slots of the 60th field
4] is inserted.

When all the data packets of all the data groups are transmitted, the first field to the fifth field in the second second are transmitted.
The data packets [a21] to [a40] included in the data group a are inserted into the 20 slots of the field, and then [b17] included in the data group b in the 16 slots of the sixth to ninth fields. ] ~
The data packet of [b32] is inserted, and thereafter, the insertion of the same data packet is repeated.

As a result of the insertion of such a data packet, as shown in the ninth second, the 46th field, the fourth slot, the last data packet [i
196], the dummy packet is inserted into the first to fourth slots in the forty-seventh field having no data to be inserted. Similarly, the dummy packet is the second to fourth data after the insertion of the last data packet [j157] of the data group j is completed in the first slot of the 51st field.
Slot, the 52nd field, the 2nd to 4th slots, and the 53rd to 5th slots after the insertion of the last data packet [k145] of the data group k in the first slot is completed.
Each of the first to fourth slots of five fields, the fifth of which the transmission of the last data packet of the data group l has already been completed
It is also inserted into each of the first to fourth slots in the 6th to 58th fields.

The number of dummy packets inserted in this way is a total of 152 for 8 for performing a receiving operation and 144 for empty slots. FIG. 6 shows the first embodiment of the present invention, in which packets F1 to F1 are replaced with dummy packets inserted into empty slots after transmission of all data packets included in a data group is completed.
144 is inserted. These packets are referred to as “filler packets” in this specification. These filler packets carry data such as program guides, announcements, and advertisements, and are provided with a dedicated logical channel identification code of two. .

The reception of the filler packet is carried out by designating a dedicated logical channel identification 2 code by the user. The filler packet to which the dedicated logical channel identification 2 code is added is transmitted as a TCD code, an operation signal or a time signal. Similarly, if the receiving device automatically receives and takes in the data, push-type data transmission can be performed. In this case, when the user does not select a specific program and the receiving apparatus is in a standby state, this data can be automatically displayed.

FIG. 7 shows a second embodiment of the present invention. In addition to the filler packet in the first embodiment of FIG. 5, eight dummy packets for two fields required for operation are also used as filler packets. The filler packets to be inserted are F1 to F152.

FIGS. 8 to 10 show the third and fourth embodiments of the present invention.
Will be described. FIG. 8 shows a data program scheduling pattern according to the prior application which is the object of the third and fourth embodiments of the present invention. The time required to transmit all data packets of each data group is equal, and data packets of all data groups are always transmitted within 60 fields per second, and the data program organization pattern shown in FIG. 5 is repeated. Unlike this data program scheduling pattern, a set of fields to be used in advance is reserved according to the expected size of each data group, and data packets included in each data group are stored in the reserved field. Sent out.

Therefore, the dummy packet is inserted into a slot having no data packet to be inserted when the transmission of the data packet of the data group is completed without using all the slots in the reserved field.

In the data groups transmitted in this figure, the number of data packets included in each data group is [188] for convenience of explanation as in FIG.
, [B] 146, [c] 159, [d] 6
8, [e] is 152, [f] is 184, [g] is 105, [h] is 114, [i] is 196,
[J] is 157, [k] is 145, and [l] is 105
, [M] is 77, [n] is 68, and [o] is 118
Individual. In this figure, data group [j]
The subsequent description is omitted.

Since the number of such data packets is undetermined when a data multiplex broadcast program is organized, the number of slots and the number of fields reserved for transmitting each data group are increased, for example, [ a] is 2
00 slots (50 fields), [b] has 160 slots (40 fields), and [c] has 160 slots (4 fields).
0), [d] is 80 slots (20 fields), [e] is 160 slots (40 fields),
[F] is 200 slots (50 fields), [g] is 120 slots (30 fields), [h] is 120 slots (30 fields), [i] is 200 slots (50 fields), and [j] is 160 slots. (40 fields), [k] is 160 slots (40 fields), [l] is 120 slots (30 fields),
[M] is 80 slots (20 fields), [n] is 8
Slots and fields of 0 slot (20 fields), [o] is 120 slots (30 fields), and [p] is 40 slots (10 fields) are reserved.

When a data packet is inserted into a reserved slot, a dummy packet is inserted into a slot having no data packet to be inserted because the number of reserved slots and the number of fields are set to be relatively large. As a result, the data program is organized as shown in FIG. In this figure, the description of the intermediate part is omitted. In the case of FIG. 8, the insertion of the TCD packet and the insertion of the dummy packet transmitted subsequent to the TCD packet are the same as those in FIG. 5, so that further description is omitted.

Thereafter, the transmission of the data packet is started. First, the first field, the seventh field, the first slot to the fifth
Data packets included in the data group a are inserted into 188 slots of the fourth slot in the fourth field, dummy packets are inserted into the 12 reserved slots where no data packet is inserted, and then the first second Fifth
Data group b is stored in 146 slots of the 7th field, the first slot to the second second, the 33rd field, the second slot.
Are inserted, and dummy packets are inserted into the 14 reserved slots in which no data packet is inserted, followed by the second slot, the 37th field, the first slot to the third second, the 16th slot. Data packets included in the data group c are inserted into the 159 slots in the third slot of the field, dummy packets are inserted into one reserved slot where no data packet is inserted, and so on. Is repeated. When the transmission of the first 16 data groups is completed, a new TCD code is transmitted, and similar data programming is performed.

The number of dummy packets transmitted at the time of transmitting the first 16 data groups shown in FIG. 8 is a total of 152 for 8 for performing the receiving operation and 144 for the empty slot. FIG. 9 shows a third embodiment of the present invention, in which filler packets F1 to F144 are used instead of dummy packets inserted into empty slots after transmission of all data packets included in a data group is completed.
Is inserted. The description of these filler packets is the same as in the case of the first and second embodiments, and will not be repeated here.

FIG. 10 shows a fourth embodiment of the present invention. In addition to the filler packet in the third embodiment shown in FIG. 9, eight dummy packets for two fields necessary for operation are also used as filler packets. The filler packets to be inserted are F1 to F152. Here, as in the case of the third embodiment, the description of the filler packet is omitted.

An embodiment in which the present invention is applied to audio multiplex data broadcasting will be described with reference to FIGS. Each of the embodiments shown here uses a single data channel. However, it is needless to say that the present invention can be applied to the one using two data channels as in the prior application. is there. For convenience of explanation, the slots are divided into 32 slots transmitted per second.

In these embodiments, five data groups [a] to [e] are transmitted first, and after transmission of data packets of the data groups [a] to [e] is completed, the next data group is transmitted. A data packet is sent.
The data packets included in each data group are as follows: data group [a] is a1 to a66, data group [b] is b1 to b48, and data group [c] is c1 to c1.
c59, the data group [d] is d1 to d74, and the data group [e] is e1 to e15. These data packets are organized according to the multiplex data program organization system proposed in Japanese Patent Application No. 9-19842, which is the prior application.

In order to transmit these data groups, transmission control data (TCD) codes of TCD1 and TCD2 are required.
If dummy packets for slots are required, T
Two slots are required for CD packet transmission and two more slots are required for dummy packet transmission.

Embodiments 5 and 6 of the present invention will be described with reference to FIGS. FIG. 11 shows Embodiment 5 of the present invention.
6 is an example of a data program organization pattern of the invention of the prior application which is the object of the first and sixth inventions. In the data program scheduling pattern of the invention of the prior application, in order to facilitate data transmission management of each data group, the time required to transmit all data packets of each data group is equal, and 32 slots per second (hereinafter referred to as "frame"). The data packets of all the data groups are always transmitted within the parentheses) so that the data program organization pattern is repeated. In this case, when transmission of all data packets included in a certain data group is completed, a dummy packet (DMY) is inserted into an empty slot. As a result, the data program is organized as shown in this figure. In this figure, the description of the intermediate part is omitted. When the transmission of the first five data groups is completed, a new TCD code is transmitted, and the same data programming is performed.

FIG. 11 will be specifically described. Unless it is necessary to change the frame configuration in order to end the transmission of the data group that has been transmitted or to start transmitting a new data group in order to simplify data packet transmission management The configuration of the frame is used repeatedly without being changed.

The user who receives the audio multiplex data broadcast first needs to receive the LCI1 necessary to receive the desired multiplex data.
It is necessary to receive a packet to which a TCD code carrying a code and an LCI2 code is attached (hereinafter referred to as “TCD packet”) with the highest priority. For this purpose, in the audio multiplex data broadcasting, a packet in which a TCD code is added at the beginning of frame 1 is transmitted first. Since the amount of data that can be loaded in one packet is 22 bytes, a TCD code is usually assigned to a plurality of packets, for example, two packets in this example.

Subsequently, a dummy packet to which an LCI2 code, which is an operation signal, has been added to slot 3 and slot 4 is inserted so that the receiving apparatus that has received the TCD packet prepares to receive a desired data packet.

Thereafter, transmission of data packets is started. First, data packets [a1] to [a7] included in data group a are inserted into seven slots from slot 5 to slot 11, and then, Data packets [b1] to [b5] included in data group b are inserted into five slots 12 to 16 and then included in data group c in six slots 17 to 22. The data packets of [c1] to [c6] are inserted, and 8 of slots 23 to 30 are inserted.
[D1]-included in data group d in the number of slots
The data packet of [d8] is inserted and the slots 31 to 31 are inserted.
The data packets [e1] to [e6] included in the data group e are inserted into the two slots 32.

When all data packets of all data groups are transmitted in this manner, the slots 1 to 7 of frame 2 are included in data group a [a
8] to [a14] are inserted, and [b] included in data group b in slots 8 to 12
6] to [b10] are inserted, and so on. The last data packet [e1 of the data group e is inserted into the slot 3 of the frame 8.
5] is inserted, the last data packet [a66] of the data group a is inserted into the slot 3 of the frame 9, the last data packet [b48] of the data group b is inserted into the slot 10, and the data group c of the data group c is inserted into the slot 17. The last data packet [c59] is inserted, and the last data packet [d7
4], and the transmission of the first five data groups is completed in this manner.

The data packet is inserted in this way, and there are no data to be inserted in slot 4, slot 21 to slot 32 of frame 8, slot 4 to slot 7, slot 11 to slot 12, and slot 18 of frame 9. , Slot 21 to slot 26, slot 27
A dummy packet is inserted into the slot 28, and the number of dummy packets to be inserted is 2 for performing a receiving operation and 18 for empty slots, that is, a total of 20.

FIG. 12 shows a fifth embodiment of the present invention, in which filler packets F1 to F1 are replaced with dummy packets inserted into empty slots after transmission of all data packets included in a data group is completed. F18 is inserted. The description of these filler packets is the same as that in the case of the scanning line multiplex data broadcasting, and therefore will not be described again here.

FIG. 13 shows a sixth embodiment of the present invention. In addition to the filler packet in the fifth embodiment of FIG. 12, two dummy packets necessary for operation are also made into filler packets. Filler packet is F
1 to F20.

Embodiments 7 and 8 of the present invention will be described with reference to FIGS. FIG. 14 shows the seventh embodiment of the present invention.
And 8 are conventional data program scheduling patterns. This data program scheduling pattern differs from the data program scheduling pattern of the prior application shown in FIG. 11 in that a set of slots to be used is reserved in advance according to the expected size of each data group. Data packets included in the group are transmitted in the reserved slots.

Therefore, the dummy packet is inserted into a slot having no data packet to be inserted when transmission of the data packet of the data group is completed without using all the slots in the reserved slots. In the data group transmitted in this figure, the number of data packets included in each data group is 66 for [a], 48 for [b], and 59 for [c] as in FIG.
, [D] is 74, and [e] is 15.

Since the number of such data packets is undetermined when a data multiplex broadcast program is organized, the number of slots and the number of slots reserved for transmitting each data group are set to be relatively large. 70 slots for [a], 50 slots for [b], 60 slots for [c], 80 slots for [d], 2 slots for [e]
0 slots are reserved.

When a data packet is inserted into a reserved slot, a dummy packet is inserted into a slot having no data packet to be inserted because the number of reserved slots and the number of slots are set to be relatively large. As a result, the data program is organized as shown. In this figure, the description of the intermediate part is omitted. In this case, the insertion of the TCD packet and the insertion of the dummy packet transmitted subsequent to the TCD packet are the same as in the case of FIG. 5, so that further description will be omitted.

Thereafter, transmission of data packets is started. First, data packets included in data group a are inserted into 66 slots from frame 1 slot 5 to frame 3 slot 4, and no data packet is inserted. Dummy packets are inserted into five reserved slots, then data packets included in data group b are inserted into 48 slots from frame 3 slot 11 to frame 4 slot 26, and no data packet is inserted. Dummy packets are inserted into the reserved slots, and then the data group c is assigned to 59 slots from frame 4 slot 29 to frame 6 slot 23.
Are inserted, a dummy packet is inserted into one reserved slot where no data packet is inserted, and then a frame 6 slot 25 to 25 is inserted.
A data packet included in the data group d is inserted into 73 slots of the frame 9 slot 2, a dummy packet is inserted into six reserved slots where no data packet is inserted, and finally a frame 6 slot 9
Data group e in 15 slots of
Are inserted, and dummy packets are inserted into the five reserved slots where no data packet was inserted. When the transmission of the first five data groups is completed, a new TCD code is transmitted, and the same data multiplex programming is performed.

The number of dummy packets transmitted at the time of transmitting the first five data groups shown in this figure is a total of twenty, two for receiving operation and 18 for empty slots. .

FIG. 15 shows a seventh embodiment of the present invention, in which filler packets F1 to F1 are replaced with dummy packets inserted into empty slots after transmission of all data packets included in a data group is completed. F8 is inserted. The description of these filler packets is the same as that of each of the embodiments described above, and therefore will not be repeated here.

FIG. 16 shows the eighth embodiment of the present invention. In addition to the filler packet in the seventh embodiment shown in FIG. 15, a dummy packet of two slots required for operation is also a filler packet. The filled filler packets are F1 to F20. Here, the description of the filler packet is omitted as in the case of the seventh embodiment.

In the above-described embodiment, the data multiplex broadcasting using the scanning lines in the vertical scanning line blanking period of the television and the sub audio band of the television audio has been described. Multiplexed data broadcasting that uses the sub audio band of FM broadcasting, digital data broadcasting that uses the audio band of satellite television broadcasting, digital television broadcasting, digital audio broadcasting, or digital data broadcasting. Needless to say, the present invention can be applied to this.

[Brief description of the drawings]

FIG. 1 is a signal format diagram of scanning line multiplex data broadcasting.

FIG. 2 is a format diagram when a data signal is multiplexed on a horizontal scanning line during a vertical blanking period.

FIG. 3 is an explanatory diagram of a scanning line multiplex data broadcasting data line.

FIG. 4 is an explanatory diagram of a sub audio band multiplexed data broadcast data line.

FIG. 5 is an explanatory diagram of a configuration of a scanning line multiplex data program of the invention of the prior application.

FIG. 6 is an explanatory diagram of a scanning line multiplex data program configuration embodiment of the present invention.

FIG. 7 is an explanatory diagram of another embodiment of the configuration of the scanning line multiplex data program of the present invention.

FIG. 8 is an explanatory diagram of another scanning line multiplex data program configuration of the invention of the prior application.

FIG. 9 is an explanatory diagram of an embodiment of the present invention applied to another scanning line multiplex data program configuration of the prior invention.

FIG. 10 is an explanatory diagram of another embodiment of the present invention applied to another scanning line multiplex data program configuration of the prior application.

FIG. 11 is an explanatory diagram of a configuration of an audio multiplex data program according to the invention of the prior application.

FIG. 12 is an explanatory diagram of an embodiment of the present invention applied to the audio multiplex data program configuration of the prior application.

FIG. 13 is an explanatory diagram of another embodiment of the present invention applied to the audio multiplex data program configuration of the prior application.

FIG. 14 is an explanatory diagram of an audio multiplex data program configuration.

FIG. 15 is an explanatory diagram of an embodiment of the present invention applied to an audio multiplex data program configuration.

FIG. 16 is an explanatory diagram of another embodiment of the present invention applied to an audio multiplex data program configuration.

[Explanation of symbols]

 Reference Signs List 1 video signal 2, 3 horizontal synchronization pulse 4 color burst signal 5 data line 6 synchronization section 7 data packet section 8 bit synchronization code 9 byte synchronization code 10, 20 packet prefix 11, 21 data block 12, 22 check code 13, 23 logic Channel identification 2 code 14, 24 Scramble control code 15, 25 Continuity index code 16, 26 Data group control code 17 Mode control unit 18 Data packet unit 19 Frame control unit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI H04N 7/087 7/088 (72) Inventor Hideo Watanabe 1-8-14 Sendagaya, Shibuya-ku, Tokyo ELSI Japan Inside the corporation

Claims (8)

[Claims] The present invention relates to a multiplexed data programming system in a data multiplex broadcasting in which data packets of a plurality of data programs are multiplexed and broadcast on a multiplexable portion of a broadcast wave. Each of the plurality of data programs inserted in the portion is broadcast with a different identification code; and a multiplexable portion having no data packet to be inserted in the plurality of data programs is provided with a data program other than the plurality of data programs. A multiplex data programming system in which data packets are inserted. 2. The multiplex data program organization system according to claim 1, wherein a dedicated identification code is assigned to a data packet of a data program other than said plurality of data programs. 3. The multiplex data program organization system according to claim 2, wherein there are a plurality of data programs other than said plurality of data programs, and said dedicated identification code is assigned in common to said data programs other than said plurality of data programs. . 4. The multiplex data program organization system according to claim 2, wherein there are a plurality of data programs other than said plurality of data programs, and said dedicated identification code which is different for each data program other than said plurality of data programs is assigned. . 5. The multiplex data broadcasting system according to claim 2, wherein automatic reception is performed using the dedicated identification code. 6. The data according to claim 1, wherein the multiplexable portion of the broadcast wave is a horizontal scanning line during a vertical retrace period of the television video signal. Broadcast programming system. 7. The data broadcast program scheduling system according to claim 1, wherein the multiplexable portion of the broadcast radio wave is a sub-audio band of a television audio signal. 8. The multiplex data program organization system according to claim 1, wherein the multiplexable portion of the broadcast wave is a sub audio band of FM broadcast.