MX9602667A - Audio and video signal codification digital system. - Google Patents
Audio and video signal codification digital system.Info
- Publication number
- MX9602667A MX9602667A MX9602667A MX9602667A MX9602667A MX 9602667 A MX9602667 A MX 9602667A MX 9602667 A MX9602667 A MX 9602667A MX 9602667 A MX9602667 A MX 9602667A MX 9602667 A MX9602667 A MX 9602667A
- Authority
- MX
- Mexico
- Prior art keywords
- radio
- television
- transmitted
- signal
- data
- Prior art date
Links
Abstract
1.- The process for which information can be obtained from and by the emission of radio and television signals of electronic form by means of inclusion through signal digitalization inaudible for humans a code in the sound track of low or high frequency in the magnetic belts wherein recorded communications are found to be transmitted by radio or television in such a way that the signals are picked up by a detector, which receives and transmits them to a computer that by means of subsonic or supersonic filters identifies the coded signal and processes the information included in the same by virtue of the digitalization before mentioned and emits a report that contains data obtained thanks to the reception of the digitalized signal. 2.- In the digitalization inaudible codes are generated for the human ear but recordable and reproducible in the sound track of the radiophonic and audiovisual systems. 3.- The codes are produced using a digital tone generator with a system of numerical equivalents, these tones can be in the low band or in the high. 4.- Once generated the tone realizes a recording that can be copied to each material copy that pretends to be transmitted by radio or television. These codes will be placed at the beginning of the transmission and at the end of the same. 5.- The signal digitalized like this is transmitted by the conventional radio or television means. 6.- The transmitted signal is detected by a high speed digital processor with various input ports by process card. 7.- Each card functions with a specific filter system that detects each tone used by the tone generator. 8.- The combination of the signals produced by the filter channels produce a value that is associated to a data base, identifying the message of what its about. 9.- The input of data to the card is made by the audio channel, for which an equipment is required that is converting the electronic signals transmitted by radio or cable to sounds. 10.- The report consists of informing, between other data, outgoing and reception times, number of emissions and any other data that is related with this transmission by radio or television.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MXPA/A/1996/002667A MXPA96002667A (en) | 1996-07-08 | Digital audio and vi signal coding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MXPA/A/1996/002667A MXPA96002667A (en) | 1996-07-08 | Digital audio and vi signal coding system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| MX9602667A true MX9602667A (en) | 1998-07-31 |
| MXPA96002667A MXPA96002667A (en) | 1998-11-09 |
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