CN1136249A - Real time broadcasting method and transmitting and receiving system for radio image and code information - Google Patents
Real time broadcasting method and transmitting and receiving system for radio image and code information Download PDFInfo
- Publication number
- CN1136249A CN1136249A CN 96100826 CN96100826A CN1136249A CN 1136249 A CN1136249 A CN 1136249A CN 96100826 CN96100826 CN 96100826 CN 96100826 A CN96100826 A CN 96100826A CN 1136249 A CN1136249 A CN 1136249A
- Authority
- CN
- China
- Prior art keywords
- information
- code
- radio
- column
- interface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
A wireless real-time broadcast method for text information and its transmitter-receiver system features that the informations of different classes and from different sources are divided into several groups for different user groups, each group has several columns, each column contains the information in the same class, said information is encoded into efficient NEWSDATA code. and is transmitted at the same frequency by a narrow-band radio data transmitter according to their priorities, the NEWSDATA code is received by authorized user with special receiver, and the information may be stored or displayed on TV set.
Description
The present invention relates to the method and the system thereof of the wireless real-time broadcasting of digital graph text information and wireless receiving, storage, belong to the wireless data broadcasting field.
Existing wireless paging station, except that being used for paging broadcasting, also provide give the correct time, public service such as weather forecast, information such as some stock market that also regularly issues the same day, foreign exchange, market conditions, because it is low that paging centers issues the message transmission rate of these information, real-time is poor, and receives information with beeper, the information storage capacity and the capacity of display are all very little, and the service of jumbo graph text information can't be provided.
Teletext data broadcasting and f-m multiplex data broadcasting, though can broadcast the information of big data quantity, system complex, investment is high, the construction period is long, mode of operation complexity, user management difficulty.
In the information age that enters develop rapidly, be the information transmission of adaptation wink crack ten thousand changes and the requirement of service, for promoting the development of information service market, overcome the limitation of above-mentioned prior art, the present invention to be setting up information service transmitting station time weak point, small investment, to broadcast and contain much information, and provide a kind of to the user and have real-time, visuality, alternative repeat reading and the operation of big capacity information storage " fool " formula, economic and practical graph text information service terminal is a purpose.
For achieving the above object, the present invention proposes the method that a kind of information classification addressing timesharing is broadcast, this method at first is the customer group at different demands, and in advance different classes of, the information branch of separate sources is classified as some groups, every group is divided into some columns again, each column is the information of a kind, generally can be divided into 1～10 group or more more, and every group can be set up separately 16 information columns, for example Shanghai market can be compiled to A organizes first column, and addressing number is A01; The electronics market conditions can be compiled to E organizes the 12 column, and addressing number is E12 etc., is compiled into efficient graph text information NEWSDATA sign indicating number through corresponding encoded software and encoder; Then by an arrowband wireless data transmitter, use same tranmitting frequency, the various information that has addressed is broadcast in order timesharing according to priority, at last watch that by obtaining certain organizes the user of some column information weight, graph text information terminating machine by special use of the present invention receives, deposits the information that the letter storage is obtained, and available domestic television set etc. shows at any time and checks.Because a certain user only needs to obtain the information that certain organizes certain several column, rather than the full detail of being broadcast, this method has solved transmitter and has constantly broadcast the contradiction of a large amount of various information and the limited memory space of graph text information terminating machine, has also overcome the authority problem that restive user uses information.
When broadcasting graph text information, a kind of efficient graph text information NEWSDATA sign indicating number that adopts the present invention to propose, its code structure is as a code character one or more information of each classification, each code character is that the synchronous code by the short lead code of 64 bits and 32 bits begins, be the information code word of address code word He several 32 bits of one 32 bit subsequently, the bell idles with 32 bits finishes at last.Each address code word and information code word all are expansion BCH (32,21)+1 even parity check sign indicating numbers, can examine/correct 5/2 random error and 11/5 burst error respectively.
The NEWSDATA sign indicating number is a kind of binary coding, and it has opened the digital compression function, except that can sending character, Chinese character information, can also transmit data messages such as image, binary program.When adopting transmission rate to be 1200bps, per second can be broadcast about 92Bytes information, if again through after 2: 1 the digital compression, per second can broadcast the information of 184Bytes; If adopting transmission rate is 2400bps or 4800bps, or 4: 1 digital compression, then can broadcast the amount of information of 368Bytes each second, will broadcast the nearly information of 30MBytes every day (24 hours), be roughly equal to the amount of information of 1,500 ten thousand Chinese characters.
During emission,,, generate the NEWSDATA sign indicating number, after with the serial data way of output, delivering to the transmitter modulation, amplifying, launch through antenna through corresponding software and the encoder of generating the information of depositing in the message buffer to be released.
The radio image and code information terminating machine is the important component part that realizes information service, and it is received the decode by signal, and part such as signal processing and storage, information output interface and man-machine operation interface is formed.Signal receive section comprises reception antenna, amplifier, frequency translation, demodulator and decoder etc., this part the radio frequency NEWSDATA coded signal that receives through amplification, frequency translation, be demodulated into baseband signal, and further decoding, after carrying out EDC error detection and correction, restore data, deposit information storage area in.Signal processing and storage area comprise the system clock oscillator, central processing unit, data storage, program storage and config memory.Be solidified with the program that information shows in the program storage, the setting and the state control data of each information column leave in the config memory.The information output interface comprises the VGA display interface, the high definition video signal output interface.The man-machine interface of serial communication RS232 interface has keyboard operation and two kinds of modes of remote controller operation.
Because it is ever-changing to wait to broadcast information, information column is additions and deletions or modification often, for this reason, the present invention proposes the title of every group of each column information, information format is passed through wireless mode, carry out long-range setting or modification, and be solidificated in user's the config memory E2PROM of picture and text terminating machine.In addition, in order to control the rights of using of respectively organizing each column signal of user, each column of each user terminal all is provided with four kinds of states by wireless mode, that is: to broadcasting
A. opening---the user can watch this column and information.
B. warning---watch that the date arrives, remind the user to pay dues.
C. closing---the user does not pay dues, and can not watch the information of this column.
D. online---user's decapacitation is watched outside the information of this column, can also be transported in the computer by the RS232 interface and store, and handles.
In order to save customer investment, the picture and text terminating machine can connect the domestic television set viewing information, the present invention proposes teletext high-resolution Display Technique, at first adopt the A/D switch technology, the non-interlaced analog signal conversion of VGA output is become the RGB digital signal, and with digital filtering and memory technology, the RGB digital signal is stored, non-interlaced picture intelligence with VGA output carries out the interlacing conversion then, at last the result of conversion is transformed into the RGB analog signal of interlacing again with the D/A switch technology, deliver to colored synthesis processor, after colour is paid carrier modulation, deliver to the TV video interface.For on TV, seeing clear, stable graph text information, eliminate the shake conditions of streaking, display format is set to 640 * 280 * 16 looks, and has adopted PHASE-LOCKED LOOP PLL TECHNIQUE, to guarantee correct phase place and stable and accurate frequency values.
Real-time broadcasting that graph text information is wireless is on the information distributing means, be similar to the wireless paging station, aspect information management and published method, be similar to the online service of computer, but watch at it and to be similar to teletext on mode, and on its method of operation, then adopt and need not learn the straightforward procedure of " fool " formula that everybody can use.So not only overcome the weakness of existing information transmission media, and system is simple, scale of investment is little, number of users is not limit, and multicolumn purpose information can be provided, and contains much information, the information transmission is rapid, directly enters family, and the no paper of realizing information transmits and information service popular.
Below in conjunction with accompanying drawing, the present invention is further illustrated, makes purpose of the present invention, feature, advantage become more obvious.
Accompanying drawing 1, radio image and code information emission and receiving system schematic diagram;
Accompanying drawing 2, graph text information NEWSDATA code structure;
The formation flow chart of accompanying drawing 3, (a) NEWSDATA sign indicating number;
The encoder circuit figure of accompanying drawing 3, (b) NEWSDATA sign indicating number;
The circuit block diagram of accompanying drawing 4, radio image and code information receiving terminal.
Accompanying drawing 1 is the enforcement schematic diagram of radio image and code information emission and receiving system, wherein radiating portion is under the NOVELL computer network environment, pass through the packet switching network, Digital Data Net, satellite network, means such as Email or manual entry, be stored in the server sending after the various information collection, the control desk of then the posting a letter a certain category information (example for electronics market) of gathering and editing, provide gather and edit packets of information number and column number, encoded device be encoded into behind the NEWSDATA sign indicating number with the serial data way of output be sent to carry out frequency keying modulation (FSK) and power amplifier in the transmitter after, broadcast away by antenna.Rf frequency is elected 136～470MHz as, channel spacing 25KHz, and transmitting power is 20～150 watts.
The addressing information of broadcasting away, the wireless information terminal that is distributed in each user place receives, and has authority to enjoy the user of this column information, can watch this column information at any time with screens such as television sets.
Accompanying drawing 2 is graph text information NEWSDATA code structures, this yard is the short lead code of being done by 64 bits 1010 ... 10 beginnings, then be the synchronous code 7CD215D8 (H) of 32 bits, be the information code word of address code word He several 32 bits of 32 bits subsequently, the bell idles 5A89C197 (H) with 32 bits finishes at last.Each address code word and information code word all are expansion BCH (31,21)+1 even parity check sign indicating numbers of 32 bits.The generator polynomial of check code is G (X)=X
10+ X
9+ X
8+ X
6+ X
5+ X
3+ 1, sign indicating number position, even school is mould two Hes of full detail position and check digit.
Accompanying drawing 3 (a) is each code word generator flow chart in the NEWSDATA code character, the steps include: (1) one or more information of each classification as the input that is encoded of a code character; (2) generate the short lead code of 64 bits and the synchronous code of 32 bits; (3) expansion BCH (31,21)+1 address code that generates 32 bits is expanded BCH (32,21)+1 information code with several; (4) bell idles of generation 32 bits.More than each code word (data) of Sheng Chenging is sent to be stored in and is sent in the buffering area.Fig. 3 (b) is that the NEWSDATA code coder is formed enforcement figure, clock oscillator provides fundamental clock for coding among the figure, behind this clock process encoder chip frequency division, produce the bit rate clock, its divide ratio can be controlled according to code rate by software, encoder chip will send the data that buffering area is sent here, form according to the NEWSDATA sign indicating number is encoded, the coded data that produces can directly connect transmitter after driver drives, in addition, data buffer has strengthened the driving force of bus, and address decoder is then deciphered the address signal that bus is come, and the assurance computer is correctly visited encoder chip.
Accompanying drawing 4 is that the radio image and code information receiving terminal is formed block diagram, this terminal by radio frequency receive the decode, central processing unit and several parts such as memory, VGA display interface, TV display interface, communication interface and man-machine interface form.
At first after amplifying, height carries out frequency conversion from aerial next modulated radiofrequency signal, after amplitude limit amplification and demodulation filtering, be reduced into baseband signal again, this baseband signal is sent into decoder chip and is decoded, decoder chip is according to the structure of NEWSDATA sign indicating number, according to the bit rate that receives, at first carry out lead code 1010 ... 1010 detection, when detecting correct 64 1010 ... after 1010, decoder chip detects subsequently synchronous code with regard to beginning, after decoder chip recognizes synchronous code, just produce synchronous mark (being interrupt signal), notice CPU has received correct synchronous code, after this decoder chip is just sampled to follow-up address code and information code bit rate according to the rules, and the information content of receiving is transferred in the data memory with interrupt mode.
Central processing unit and memory are the processing cores of picture and text receiving terminal.Central processing unit can be selected the microprocessor chip of arbitrary model for use, and it finishes the computing and the logic determines of information processing.Memory is made up of three parts: program storage is used for solidifying the software of picture and text terminal; The information that the data memory serves storage receives, and as the working cell in the software running process; Config memory is used for the configuration information and the customer management information of memory channel.
The VGA display interface provides the interface that links to each other with the VGA monitor, is used to the information that shows that the picture and text terminal is received.The VGA display interface is made up of VGA display controller and display-memory and driver.All timing controling signal when the VGA display controller provides VGA to show as row synchronously and field synchronization, and provides the read-write control signal of visit display-memory.The memory space of having used when display-memory then provides display message.
The TV display interface then is used for the interface that links to each other with television set.Picture and text terminal information content can be shown on television set,, reduce customer using cost to satisfy users' requirement.The TV display interface is made up of video a/d converter, video signal preprocessor, phase locked loop oscillator, video d/a converter and colored several sections such as synthetic.The video a/d converter becomes digital signal with the RGB analog signal conversion that the VGA display controller produces, and sends into video signal preprocessor and handle.Video signal preprocessor adopts digital filtering technique and digital storage technique the non-interlaced conversion of signals of VGA output to be become to be suitable for the interlace signal of TV, export the digital signal and the synchronizing signal of TV image according to the scan mode of television standard PAL or NTSC, the picture intelligence that produces simulation after this digital image signal process video d/a converter conversion is sent into colored synthesis processor (CXA1645), colored synthesis processor is delivered on the TV after then the analog picture signal of sending here being superimposed with colored pair carrier wave and composite synchronizing pulse, just can see stable chromatic image so on TV.In order to guarantee to see stable content clearly as much as possible on TV, the display format of picture and text terminal is set to 640 * 280 * 16 looks, and this setup can realize by the scan control memory in the direct modification VGA display controller.Related register mainly comprises: show head office's number register, show the blanking register and show the flyback register that the purpose of revising these registers is to guarantee that frame frequency is consistent with the frame frequency of television set, and can demonstrate 280 row on television set.
Man-machine interface partly comprises: the keyboard of panel and infrared remote control keyboard, these interfaces provide the means of operation picture and text terminals.The infrared remote control keyboard is made up of Infrared remote controller and infrared remote receiver.Behind the infrared encoder coding, deliver to infrared transmitter at the push button signalling of importing on the infrared remote control keyboard, carrier signal after the modulation is launched in ultrared mode, send into IR decoder through the infrared receiving tube reception and after the infrared amplifier amplification, produce the signal corresponding and deliver to central processing unit with the infrared remote control keyboard.
Serial communication interface is a kind of RS232 interface of standard, is made up of serial communication control (8251) and driver.Serial communication control is finished the conversion of parallel signal to the conversion of serial signal and serial signal to parallel signal.Driver then finish the RS232 level (± 12V) and Transistor-Transistor Logic level (0～+ mutual conversion between 5V).
Be the setting up procedure that example is specifically described the column format content so that economic information (market conditions) column to be set below:
If: information to be broadcast is economic information (market conditions), be addressed in the A group, the 6th column, below tabulation sound of laughing formula setting: the economic information list (date issued * *. * *) name of an article brand and model price dealer phone * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
:::::: specifically implement as follows:
1. configuration information column parameter:
Information addressing number: A06
Channel type: form
Form title: economic information (market conditions) list
Capacity: 20 pages
Form length: 240 (the total line numbers of form)
2. the every characteristic of form is set:
Form key name type byte number integer figure decimal digits
The name of an article 0 12 00
Brand 0 10 00
Model 0 10 00
Price 1342 dealers 0 16 00 phones 0800
3. information form is provided with transmission:
The market conditions form data of above-mentioned setting is accessed from the information setting storehouse, carry out NEWSDATA sign indicating number form coding after, be sent to transmitter and launch.
4. the reception of information form setting:
After user's graph text information terminating machine receives the configuration information of this market conditions form, can show that on display screen " this TV station is reset now, and please wait a moment! ".And new column is provided with content deposits config memory in, after depositing in, on screen, show and " reset and finish, please start shooting again! "
5. the reception of new column information:
After the user started shooting again, " economic information " title appearred in the 6th column on the column menu, and the user moves on to the economic information column to cursor, buying under the situation of watching column information, just can watch column information.
The user is to the state setting of these column rights of using, and its method is with the setting of the information format of column.
Above embodiment is only as to explanation of the present invention, rather than limit the invention to the foregoing description, and those skilled in the art can make multiple remodeling to the present invention, but do not break away from spirit and the scope that is limited by following appended claim.
Claims (6)
1, a kind of radio image and code information real time broadcasting method is characterized in that:
(1) information branch different classes of, separate sources is classified as some groups, every group is divided into some columns again, and each column is the information of a kind;
(2) be compiled into efficient graph text information NEWSDATA sign indicating number through corresponding encoded software and encoder;
(3) by the same tranmitting frequency of a narrowband radio digital transmitter, the information of respectively organizing each column that has addressed is broadcast in order timesharing according to priority;
(4) by obtaining the user who watches certain group column information weight, receive, store received said information by private radio graph text information terminating machine.
2,, it is characterized in that the establishment of said efficient graph text information NEWSDATA sign indicating number may further comprise the steps according to the radio image and code information real time broadcasting method of claim 1:
(1) one or more information of each classification as the input that is encoded of a code character;
(2) generate the short lead code of 64 bits and the synchronous code of 32 bits;
(3) generate 32 bit expanded BCH (31,21)+1 address codes and several 32 bit expanded BCH (31,21)+1 information code;
(4) bell idles of generation 32 bits.
(5) encoder chip is weaved into the NEWSDATA sign indicating number according to certain code rate with the Codeword Sets of above-mentioned generation, after driving, delivers to transmitter.
3, according to the radio graph text information real time broadcasting method of claim 1, it is characterized in that, said different classes of, the step that separate sources information branch is classified as some groups and column also comprises long-range setting or modify steps, with every group, the title of each column information, information format is arranged on the config memory E of user's graph text information terminating machine by wireless mode
2In the PROM.
4,, it is characterized in that said long-range setting or modify steps comprise four kinds of states that user's rights of using are set, that is: open according to the radio image and code information real time broadcasting method of claim 1; Warning; Close; Online.
5, the real-time broadcast receiving and transmitting of a kind of radio image and code information system comprises: information collection terminal, the server of emission side, the control desk of posting a letter, transmitter, transmitting antenna, recipient's radio image and code information terminal, television set (or display or microcomputer) remote controller.It is characterized in that said radio image and code information terminal is the special information terminal machine, form by radio-frequency transmitter and decoder, central processing unit and memory, VGA display interface, TV display interface, man-machine interface and serial communication interface.
6, according to the radio image and code information terminal of claim 5, it is characterized in that said radio-frequency transmitter by antenna, height put, frequency conversion amplifier, limiting amplifier, demodulator filter form; Said central processing unit and memory are by program storage, and data storage and config memory are formed; Said VGA display interface is by VGA display controller (synchronizing signal driver), and display-memory and RGB driver are formed;
Said TV display interface is made up of A/D converter, video signal preprocessor, phase locked loop oscillator, video d/a converter, colored synthesis processor and colored carrier oscillator;
Said man-machine interface is made up of detachable key switch interface, panel detachable key switch, remote control switch interface, IR decoder, infrared amplifier, Infrared remote controller, infrared remote control keyboard;
Said serial communication interface is made up of serial communication control and driver receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96100826A CN1044759C (en) | 1996-01-25 | 1996-01-25 | Real time broadcasting method and transmitting and receiving system for radio image and code information |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96100826A CN1044759C (en) | 1996-01-25 | 1996-01-25 | Real time broadcasting method and transmitting and receiving system for radio image and code information |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1136249A true CN1136249A (en) | 1996-11-20 |
| CN1044759C CN1044759C (en) | 1999-08-18 |
Family
ID=5116775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96100826A Expired - Fee Related CN1044759C (en) | 1996-01-25 | 1996-01-25 | Real time broadcasting method and transmitting and receiving system for radio image and code information |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1044759C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100420268C (en) * | 2006-07-07 | 2008-09-17 | 天栢宽带网络科技（上海）有限公司 | Message informing method and system for substituting traditional caption technology |
| CN111212051A (en) * | 2019-12-27 | 2020-05-29 | 柏科数据技术（深圳）股份有限公司 | Narrow-band transmission system and application method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8922702D0 (en) * | 1989-10-09 | 1989-11-22 | Videologic Ltd | Radio television receiver |
-
1996
- 1996-01-25 CN CN96100826A patent/CN1044759C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100420268C (en) * | 2006-07-07 | 2008-09-17 | 天栢宽带网络科技（上海）有限公司 | Message informing method and system for substituting traditional caption technology |
| CN111212051A (en) * | 2019-12-27 | 2020-05-29 | 柏科数据技术（深圳）股份有限公司 | Narrow-band transmission system and application method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1044759C (en) | 1999-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5321750A (en) | Restricted information distribution system apparatus and methods | |
| US4924303A (en) | Method and apparatus for providing interactive retrieval of TV still frame images and audio segments | |
| US5347304A (en) | Remote link adapter for use in TV broadcast data transmission system | |
| US6634028B2 (en) | Television system communicating individually addressed information | |
| US5142576A (en) | System for securely providing restricted video information | |
| CA2121565C (en) | Data broadcasting system | |
| CN101588214B (en) | System and apparatus for performing broadcast and localcast communications | |
| WO1987001002A1 (en) | Electronic information dissemination system | |
| GB2089174A (en) | Data encoding for television | |
| WO1994019881A1 (en) | System and method for remotely selecting subscribers and controlling messages to subscribers in a cable television system | |
| JP2001511630A (en) | TV signal data transmission system | |
| CN102082973A (en) | Voice message implementation method and system for network television | |
| CN1044759C (en) | Real time broadcasting method and transmitting and receiving system for radio image and code information | |
| CA2257659C (en) | Restricted information distribution system apparatus and methods | |
| WO1993020654A1 (en) | Transmission of teletext pages to selected receivers | |
| KR100330933B1 (en) | System and Method for Providing Information Service for Character Terminal and Character Terminal Suitable for the Same | |
| US20060020983A1 (en) | Data transfer using existing communication systems | |
| WO1996026607A1 (en) | A system for transmitting data over a television channel | |
| JPH02105195A (en) | Data broadcasting computer | |
| JPH0822471A (en) | Data retrieval system | |
| CN2227896Y (en) | Large screen receiving and playback machine for radio calling information | |
| JP3424869B2 (en) | Newspaper distribution method and newspaper receiving device using television signal | |
| JP3290272B2 (en) | Billing system in information communication | |
| JPH06152550A (en) | Charging device for radio communication | |
| CN1040274C (en) | Wireless broadcast system of literal pattern and data information |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |