Abstract: An accessible electronic door entry system that includes an outdoor panel that comprises a capturing microphone, an analog audio interface that digitizes sound, a threshold detector that discriminates the quality of the sound, acoustic models that represent the pronunciation of phonemes, a phoneme generator, contexts that represent the assembly of words and/or phrases and grammatical rules, a recognizer that compares the phonemes, an analyzer of words and/or phrases, a text-to-speech or TTS converter, an analog audio interface that converts the digital signals into analog ones, a communications bus of the electronic door entry system, an electronic door entry system interface that connects the bus and transmits the detected commands to the terminals and establishes the audio and/or video communication, a loudspeaker that plays the audio signals, an agenda, a RAM memory, a Flash memory and a CPU or processor that controls and manages the rest of the elements of said panel.

Abstract: An accessible electronic door entry system that includes an outdoor panel that comprises a capturing microphone, an analog audio interface that digitizes sound, a threshold detector that discriminates the quality of the sound, acoustic models that represent the pronunciation of phonemes, a phoneme generator, contexts that represent the assembly of words and/or phrases and grammatical rules, a recognizer that compares the phonemes, an analyzer of words and/or phrases, a text-to-speech or TTS converter, an analog audio interface that converts the digital signals into analog ones, a communications bus of the electronic door entry system, an electronic door entry system interface that connects the bus and transmits the detected commands to the terminals and establishes the audio and/or video communication, a loudspeaker that plays the audio signals, an agenda, a RAM memory, a Flash memory and a CPU or processor that controls and manages the rest of the elements of said panel.

Abstract: A multi-channel video intercom system with access to advanced digital services includes a two-wire communication bus for audio, video, and data communications in different communication channels, at least one outdoor panel having a camera connected to the communication bus, at least one power supply connected to the communication bus to provide power to the rest of the video intercom system, at least one user terminal connected to the communication bus wherein at least one terminal is connected to the at least one outdoor panel, and wherein at least one terminal is a video intercom terminal. The system further includes a communications gateway connected to the communication bus through a first connection interface and Internet connected through a second connection interface wherein the gateway is allowed access to advanced digital services via the Internet from at least one video intercom terminal through at least one communication bus channel available for data.

Abstract: A multi-channel video intercom system 600 with access to advanced digital services which comprises a two-wire communication bus 659 disposed such as to allow audio, video and data communications in different communication channels, at least one outdoor panel 630 having a camera connected to said communication bus 650, at least one power supply 640 connected to said communication bus 650 disposed to provide power to the rest of the video intercom system 600, at least one user terminal 300 connected to said communication bus 650 wherein said at least one terminal 300 is connected to the at least one outdoor panel 630 and wherein the at least one terminal 300 is a video intercom terminal 310.

Abstract: Two-wire multichannel video door system that comprises at least two street panels (20) with video camera (18) and home terminals, provided with an intercom, or with a monitor intercom. Characterized in that the street panels comprise the following: a digital BNFSK modulator and a digital BNFSK demodulator for transmitting audio and data to an intercom terminal, provided with a digital BNFSK modulator and a digital BNFSK demodulator; and a digital PPM modulator and a digital PPM demodulator for the transmission of audio and video to a monitor terminal, provided with a digital BNFSK modulator and a digital BNFSK demodulator and a digital PPM modulator and a digital PPM demodulator, to maintain at least two simultaneous bidirectional audio conversations between two terminals with two street panels, and to send video from the street panels to the terminals at the same time, using any type of conventional cabling.

Abstract: Two-wire multichannel video door system that comprises at least two street panels (20) with video camera (18) and home terminals, provided with an intercom, or with a monitor intercom. Characterized in that the street panels comprise the following: a digital BNFSK modulator and a digital BNFSK demodulator for transmitting audio and data to an intercom terminal, provided with a digital BNFSK modulator and a digital BNFSK demodulator; and a digital PPM modulator and a digital PPM demodulator for the transmission of audio and video to a monitor terminal, provided with a digital BNFSK modulator and a digital BNFSK demodulator and a digital PPM modulator and a digital PPM demodulator, to maintain at least two simultaneous bidirectional audio conversations between two terminals with two street panels, and to send video from the street panels to the terminals at the same time, using any type of conventional cabling.