ES2561936B1 - SYSTEM FOR SIMULTANEOUS REPRODUCTION OF AUDIO FROM A SINGLE MULTIPLEXED SIGNAL - Google Patents

Abstract

System for the simultaneous reproduction of audio from a single multiplexed signal. # It consists of the implementation of a multitasking demultiplexer card, between the audio signal coming from the antenna or the digital reproduction device and the main audio output and / or other auxiliary audio outputs available, so that the signal emitted by the broadcasting device, which has previously been encoded by superimposing the different audio signals on a single multiplexed signal, can be separated again into the different audio signals offered to the user independently and simultaneously. This gives the user the freedom to select the desired audio signal or content (languages, audio with comments, etc ...) and assign the desired audio output (TV speakers, headphones, etc ...), without requiring sacrifice the audio preferences of another viewer. This eliminates the current audio limitations, expanding the versatility of digital audiovisual devices and improving the user experience.

Description

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System for simultaneous audio reproduction from a single multiplexed signal.

DESCRIPTION

OBJECT OF THE INVENTION

The Invention Patent referred to in this Report is intended to guarantee the exclusive exploitation and ownership, throughout the national territory, of a system for the simultaneous reproduction of multiple audio signals, and their controlled distribution to the different outputs of available audio, all from a single multiplexed digital signal, or source of unique origin. It is specially designed to be implemented in digital audiovisual equipment and whose novelty represents an obvious and substantial improvement over everything known by the current state of the art.

FIELD OF THE INVENTION

This invention is related to the field of telecommunications, and especially with digital audiovisual equipment intended for audiovisual reproduction for use at a particular and / or collective level.

The purpose of this invention is to increase, from a single signal or digital source, the audio capabilities and options in digital TVs, DVD players and other digital audiovisual equipment, allowing each user free choice regarding the desired audio Play on each of the available audio outputs, allowing multiple users to use the same digital device simultaneously with a different audio setting and customized to their needs.

BACKGROUND OF THE INVENTION

So far the multimedia playback systems allow the reproduction, after selection by the user, of a single audio signal from the multiplexed digital signal received, not allowing simultaneous reproduction of another different audio signal, by having a only channel intended for that purpose. This means that currently two different users, despite being able to use different audio outputs, cannot simultaneously choose language settings or custom audio options for each of the audio outputs used.

Thus, for example, when watching a television channel or playing a DVD, only one language can be selected, which will be the audio signal that is transmitted to all existing audio outputs (TV speakers, Headphones, etc.) .

DESCRIPTION OF THE INVENTION

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The system described in this application is intended to give the user the possibility of accessing more audio signal options from the multiplexed digital signal received. Once the system processes said signal, it allows the simultaneous use of several audio signals by different users, through the available audio outputs.

Obviously, for the use of the present decoding system, it would be required in advance of the multiplexing of the signals to be decoded by the telecommunication stations or the digital reproduction devices, so that the encoded audio signals arrived simultaneously in a unique signal to the device in which this technology is implanted.

In this way, the invention will consist in the implementation of a multi-task demultiplexer card, of the type of so-called "smart cards", between the audio signal from the antenna or digital playback device and the main audio output. and / or other auxiliary audio outputs available (Fig. 1 and 2). Note that depending on the manufacturer's preferences, the multitasking card may be replaced by a parallel structure of independent audio cards.

Said multitasking card will have the necessary devices to demultiplex the input / source signal, coming from the antenna or the playback device, separating the different audio signals, so that users can access them independently and simultaneously. For this, the multitasking demultiplexer card incorporates a demultiplexer capable of receiving the encoded signal coming from the captation system and separating it into different audio signals (through a demultiplexing process). It also incorporates a microchip programmed to derive the different audio signals obtained to the audio outputs selected by the user (Speakers, Headphones, etc ...). The user will be able to select the signal or the audio content and the audio output that he wishes using the remote control or through the control buttons of the TV, creating the necessary interaction with the TV management software through menu boxes in the screen. (Figure 7).

Thus, for example, if two users watch a movie on a digital television channel, or through a DVD player, they can each select the language they want to listen to in the audio output they use, respectively. In this way, for example, one of the users will be able to listen, through audio output 1 (TV speakers), the

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audio content in English while the other user can simultaneously listen to audio in Spanish (Headphones), audio 2.

This system makes more efficient use and distribution of the digital audio signal received and its corresponding options, allowing greater flexibility and adaptability for each audio output, thus expanding the offer of audio options and versatility of digital audiovisual devices , with the provision of language options and / or data- comments individually, selectively and simultaneously for each user.

DRAWINGS

To better understand the scope of this invention, we will describe it on the accompanying drawings in which a preferred design of the same given by way of example and without limiting character has materialized.

In the drawings:

- Figs. 1 and 2 show the principle schemes on which the invention is based applied to a television and a DVD player respectively.

- Fig. 3 shows the arrangement of the system with the demultiplexer card implemented inside the television receiver.

- Fig. 4 shows the arrangement of the system with the demultiplexer card arranged inside a DVD player.

- Fig. 5 shows the system layout with the demultiplexer card arranged independently of the television receiver.

- Fig. 6 shows the equivalence between the input and output connectors of the demultiplexer multitasking card, both in its independent module version and in its element version implemented in the television receiver.

- Fig. 7 shows the audio selection process and the corresponding audio output through the remote control and the menu boxes of the TV.

We can verify that, in the drawings, we have represented by (1) the transmitter, (2) the antenna or wave reception device, (3) the device that contains the demultiplexer card, (4) Auxiliary audio outputs (Ex. headphones), (5) the television receiver, (6) Main audio output (TV speakers), (7) the remote control, (8) the antenna input connector, (9) the HDMI input connector, (10) the USB input connectors, (11) the input / output connector (scart connector) of the main signal, (12) the jack or mini-jack connectors of the different audio outputs, (13) DVD player.

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PREFERRED EMBODIMENT OF THE INVENTION

As can be seen in the scheme of the principle of operation of Figures 1 and 2, the system consists in the use of a multitasking demultiplexer card (SMC in the scheme), equipped with a certain plurality of connectors, which the carrier signal coded with the different audio signals emitted by a digital television station or a DVD player, as the case may be, as well as signals from other digital devices connected directly to the television or DVD player (USB, HDMI, etc. ...)

- In figure 1, relating to a television, the signal input through the antenna or the input through an HDMI or USB port to which other digital devices are connected is mainly resigned. Note that the arrival of the signal through any other type of connector that allows the arrival of the encoded signal (optical fiber, etc.) would also be possible.

- In figure 2, relative to a DVD player, the signal input from the internal playback of a DVD or the input through an HDMI or USB port to which other digital devices are connected is mainly resigned. Note that the arrival of the signal through any other type of connector that allows the processing of the encoded signal (optical fiber, etc.) would also be possible.

In Figure 3, you can see the system layout for televisions that have the demultiplexer multitasking card implemented as an integral part of the whole. In this way, the signal emitted by the digital television station (1) is collected by the antenna (2) and taken directly to the card implemented in the television receiver (5), which is responsible for decoding the signal and separating it. in the different audio signals. Subsequently, the multi-task demultiplexer card will refer to the different existing audio outputs (Main audio output (6) and Auxiliary audio outputs (4)) the signals or audio contents previously selected by the user through the remote control ( 7) and the TV menu boxes.

In Figure 4, you can see the system layout for DVD players that have the demultiplexer multitasking card implemented as an integral part of the whole. In this way, the signal emitted by the DVD reader is taken directly to the card implemented in the DVD player (13), which is responsible for decoding the signal and separating it into the different audio signals. Subsequently the multitasking card

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The demultiplexer will derive to the different existing audio outputs (Main audio output (6) and Auxiliary audio outputs (4)) the signals or audio contents previously selected by the user through the remote control command (7) and / or TV menu boxes.

In Figure 5, you can see the system layout for a multi-task demultiplexer card installed in an independent module, consisting of an emitting device (1), which emits the coded signal that is subsequently captured by an antenna (2), which emits the signal to the multitasking demultiplexer card (3) which is responsible for decoding the signal and separating it into the different audio signals. Subsequently, the multitasking card will refer to the different existing audio outputs (Main audio output (6) and Auxiliary audio outputs (4)) the signals or audio contents previously selected by the user through the remote control (7) and / or the TV menu boxes.

Figure 6 shows the equivalence between the input and output connectors of the multi-task demultiplexer card, both in its independent module version and in its element version implemented in the television receiver.

Figure 7 shows, as an example and without limitation, a possible process for selecting and assigning signals or audio content and audio outputs through the remote control command and interaction with the TV software, using frames / TV screen menu.

In this way, for example, the user selects the audio options by accessing a start menu, with subsequent derivation to a possible submenu of AUDIO options; and subsequent referral to a possible submenu of LANGUAGE SELECTION; This submenu presents the possibility of selecting each desired audio option for each of the outputs or ports that you wish to use.

Thus, for example, if a user wishes to select the language they want to hear through auxiliary output No. 3, they can do so through the corresponding drop-down.

Within the essentiality of the invention, the detail variants, which are also protected, can be varied, being able to vary the transmitter device of the encoded signal, the receiver device of the encoded signal, the input and output connectors of the demultiplexer multitasking card, as well as the devices intended for the reproduction of the different signals or decoded audio contents.

Claims (3)

ES 2 561 936 A1 1 System for simultaneous audio reproduction, characterized by the fact of having a signal emitting device, capable of superimposing the different audio signals to be reproduced in a single signal, due to the existence of a multitasking card, which contains 5 Microchip demultiplexer and output connectors, capable of receiving an encoded signal from a feedback system and separating it into different audio signals by deriving it to the audio outputs that can be selected by the user. 2. - System for simultaneous audio reproduction, according to the 1§ claim, and that 10 is characterized by the fact that said multitasking card can be implemented within a television receiver, digital television, DVD player or other digital audiovisual equipment, forming a single unit. 3. - System for simultaneous audio reproduction, according to 1§, and 2§ claim, 15 characterized by the fact of being able to connect some audio broadcast or broadcast medium (headphones, speakers, etc.) to the output connectors of the multitasking card.