CN1063904C - Method to provide a subtitle in a teletext system - Google Patents

Abstract

All pages containing subtitling information in different languages, should be listed up in one table called Initial Subtitle Table (IST). The IST contains the language name, the language number and the page number to be requested for up to 15 languages, and can be displayed as a normal teletext page. The language number (1 to 15) can be stored as a channel parameter memorising indirectly the appropriate page number for each channel, making possible a very economic use of the EEPROM. After channel change the page, carrying subtitle information in the desired language, will be requested automatically via the stored language number and referencing the IST page.

Description

The method of subtitle is provided in the teletext system

The present invention relates to provide for television receiver in the teletext system method of subtitle.

If in same channel, send the multipage subtitle of several language, then require:

One constantly neatly at the different language layout page number;

Once a kind of short-cut method that only can inquire about the subtitle page by the selection of language title is provided to the user;

One after channel conversion, and only the sequence number with the storage language just can make intelligent decoder find out the subtitle page of selecting in the past.

One object of the present invention is exactly a kind of method that subtitle is provided in teletext system of seeking, and this purpose can reach by method described in the claim 1.

The page that all contains the different language subtitle information should be listed one or more in and be called among the subtitle list (IST).

IST comprises title, sequence number and the page number of the language that reaches 15 kinds of language that will inquire about, can show like that by the accurate teletext page of image scale.The channel parameter that language sequence number (1～15) can be used as each channel corresponding subtitle page number of indirect record stores, thereby electricity consumption can be wiped and programmable read only memory (EEPROM).

Behind the channel conversion,, can automatically inquire about the page of the caption information that has the language that requires by the language sequence number of storage and with reference to the IST page.

Utilize the IST page and simple user interface, promptly import shown language sequence number, just can select any new subtitle language.

In order to send the language sequence number and the page number, also to implement improved error detecting method: send two versions about digital original text and supplementary notes; For handling east, West Europe bilingual, send two kinds of different IST pages, and all will show language title catalogue on each page.The IST page

The IST page of West Europe language is stipulated Yi $1F9 as practical code, 0000 Huo $1F9, and the 3F7F page number sends; The IST page Yi $1F8 of Eastern Europe language, 0000 Huo $1F8, the 3F7F page number sends, and the reservation IST page of representing other any language is then with 1F7, and 1F6 or the like page number sends.All IST pages comprise that at most 17 row add a row headers.

Relation between decoder and the IST

Be furnished with the receiver of West Europe linguistic decoding device and only retrieve IST1 (1F9), be furnished with the receiver of Eastern Europe linguistic decoding device and only retrieve IST2 (1F8), be furnished with the reservation receiver of east, West Europe linguistic decoding device and will retrieve IST1 (1F9) and IST2 (1F8).

The structure of the ISP page

The every composition of thin portion of the table 1 IST page

Part	Meaning	Note
			The heading message row is deposited subtitle information standard row	Determine the page number by the West Europe language: West Europe language is the 1F9 page number: the Eastern Europe language for the 1F8 extracode be 0000 or the 3F7F information row deposit the language sequence number, the language title page number any Word message of standard row or null	The page number of reserving IST is 1F7,1F6 ... can equal height launch each row or configuration information manuscript or the consistent background background color of full page that use with the picture and text filling in the 17th row any delegation as walking to from the 3rd; Can launch any delegation as walking in the 17th row by equal height from the 1st

Suggestion

(1) every row should comprise 2 initial block characters, as the part of cognizance code sequence, so that for the demonstration of IST and subtitle provides the same terms, thereby decoder hardware is simplified.

(2) the 1st, 2 row only are used to send relevant explanation (being the standard row), and how the prompting user understands the IST content of pages.The 1st row should indicate the IST page that active channel is used, and the 2nd row should indicate the IST page that non-active channel is used.

(3) title of all IST pages will compress without exception, and control bit C7 puts 1.

The structure of information row The 1st field of information row information row distinguishing mark separated the 2nd field and separated the 3rd

The thin portion composition that the 5th termination table 2 information rows are separated in the 4th field is separated in the field

Part	Meaning	Note
			The 1st (Fieldl)	Inverted language sequence number, the 2nd content is identical therewith but be not inverted	Convert referring to table 6; Decoding
The 2nd (Field2)	The language sequence number, two ten's digits 01～15 of ASCII character	The decoder space of ignoring
			The 3rd (Field3)	The language name character, ASCII
The 4th (Field4)	"Yes" or " not being " character string begin with the space without exception, specialize in software and write implicit attribute before character string	Character string can place any position in the 4th, and remainder is by space ($20) fill.Character string shows that the language in the active channel is effective."Yes" and " not being " be without software verification, but will lie among the non-active channel
			The 5th (Field5)	The page number places last 6 character positions, three figure place of the page number are ASCII character decimal number (XYZ), back three figure places are inverted page numbers, and fixing head is 6 figure places	X=1..8, Y=0...9, z=0....9, decoder is ignored not
The information row distinguishing mark (1D～I)	The distinguishing mark of information row, its sequence will be accurately since first row, promptly +/bb+ or +/bb%	When appearing at when the 3rd walks to the 17th row, then differentiation sees Table 4 for the information row coding
			(FS) separated in the field	List separator is+or %	Coding sees Table 4.Thereafter can be with additional control code and sequence.If twice, then to send two identical codes " ++ " or " %% ".The decoder space of ignoring is referring to table 5
Stop (End)	The Zhong Zhidaima ﹠amp of information row; ﹠amp; Place the 39th and the 40th row	Coding sees Table the full stop of 4 each row

Suggestion

Be to improve the speed of decoder software, suggestion will place among the same column of each information row as each of practical code.The structure of standard row

The every composition of thin portion of table 3 standard row

Part	Meaning	Note
			Standard row distinguishing mark (1D-N)	Standard row distinguishing mark, its sequence will be accurately since first row, promptly +/bbx	The time then differentiate for standard row coding and see Table 4 when appearing at the 1st to the 17th row
Character 6～38 (ch6～ch38)	Any character string or control code
			Stop (End)	The Zhong Zhifu ﹠﹠ of standard row should place the 39th and the 40th row	The full stop coding of each row sees Table 4

Suggestion

1st, 2 row are used for transmission information (being the standard row), and how the prompting user understands the IST content of pages.The 1st row should indicate the IST page that active channel is used, and the 2nd row should indicate the IST page that non-active channel is used.

06 character of standard row and 38 intercharacters do not use and stop controller chassis sign indicating number BOX OFF (0A).Between table 4 and the thin portion of information row, standard row distinguishing mark form

The expression symbol	Meaning	Code in the teletext system (hexadecimal)
			+ / ％ × bb &&	The new background of any alphanumeric color shows that impliedly two of two initial boxs of stable state stop box	When only distinguishing mark places the 1st row is 00, other are followed successively by 01,02,03,04,05,06,07 1D, 18 09 0B, 0B 0A, 0A

Table 5 decoder is ignored a separation FS (Field-Separation)

The expression symbol	Meaning	Code in the teletext system (hexadecimal)
			++	Two identical alphanumeric colors	0101,0202,0303,0404, 0505,0606,0707
％％	Two implicit demonstrations	18,18

Table 6 code converts

Show	ASCII	Binary system	The complement of two's two's complement	The ACSII complement code	Show complement code
						0	30	011 0000	100 1111	4F	O
1	31	011 0001	100 1110	4E	N
							32	011 0010	100 1101	4D	M
3		011 0011	100 1100	4C	L
						4	34	011 0100	100 1011	4B	K
5	35	011 0101	100 1010	4A	J
						6	36	011 0110	100 1001	49
7	37	011 0111	100 1000	48	H
						8	38	011 1000	100 0111	47	G
9	39	011 1001	100 0110	46	F

Example 1:

Releasing in the capable I 00 1D 0B 0B 18 4F 48 07 20 30 37 07 20 45 4E 47 4C 49 53 48 20 20 07 20 20 20 20 5,945 53 20 18 32 31 30 4D 4E 4F OA OA decoders of transmission translated the sign of 00 1D OB OB, 18 row I, 07 separation of complement code " OH " of background color=black 4F 48 " 07 ", preceding background color=07 separation in white 20 30 37 language sequence numbers=" 07 " (S20 ignores), before background color=white 20 45 4E 47 4C 49 53 character strings=" English ENGLlSH/11) 48 20 2007 separations; 18 separation of preceding background color=white 20 20 20 20 59 45 53 20 character strings=" being YES "=the imply 32 31 30 4D 4E 4F page number=" 210 " and inversion stop code=termination box that the page number=" MNO " OA OA is capable, termination box

Claims (10)

1. method that certain language subtitle is provided, the information that wherein contains the subtitle page or leaf of different language subtitle is listed in one or several the optional word scene plots, it is characterized in that the optional word scene plot is received with the subtitle page or leaf, and comprise the language message of each subtitle page or leaf.

2. method according to claim 1 is characterized in that the optional word scene plot includes the title that reaches 15 kinds of language, the sequence number and the page number of language for inquiry, and the teletext page that can be used as standard shows.

3. method according to claim 1 and 2, it is characterized in that the channel parameter that the language sequence number can be used as the corresponding subtitle page number of each channel of indirect storage stores, use EEPROM (Electrically Erasable Programmable Read Only Memo) (EEPRON) in the receiving system so that save ground as far as possible.

4. according to each described method in the claim 1～3, it behind channel conversion, by the language sequence number of storage and with reference to the optional word scene plot page, can automatically inquire about the page of the caption information that has the language that requires in feature.

5. according to each described method in the claim 1～4, it is characterized in that utilizing optional word scene plot page or leaf and user interface, the input language sequence number, new subtitle language just can be selected.

6. method that sends the subtitle of different language, it is characterized in that one or more optional word scene plot sends with the subtitle page, wherein the information about the subtitle page that contains the different language subtitle is listed in the optional word scene plot, and the optional word scene plot comprises the information about each subtitle language.

7. method according to claim 6 is characterized in that: in order to send the language sequence number and the page number, send relevant numeral, original text and the supplementary notes of two versions.

8. according to each described method in claim 6 or 7, it is characterized in that:, send two kinds of different optional word scene plot pages, and all include language title catalogue on each page in order to handle east, West Europe bilingual.

9. according to each described method in the claim 6～8, it is characterized in that: the optional word scene plot page of West Europe language regulation is with S1F9, and 0000 or S1F9, the 3F7F page number sends, the optional word scene plot page of Eastern Europe language is then with S1F8, and 0000 or S1F8, the 3F7F page number sends.

10. according to each described method in the claim 6～9, it is characterized in that: represent the other optional word scene plot of other category of language to have 1F7,1F6 ... Deng the page number.