Abstract
The invention discloses a system for the bidirectional communication of digital data through the visible light spectrum, in an unconfined medium which uses two devices for supplying electrical current, regulating the voltage, converting the negative voltage, amplifying the signal, transmitting the signal to an LED, receiving the signal, finally converting the signal and transmitting the digital signal wirelessly to an end device, as specified in the description, and which, as a result of its characteristics of innocuity, privacy, low cost, higher power, savings in energy, interactivity, duality of use and extension of useful life of the devices, has a wide range of use in various fields in the industry such as: health, medicine, the military, education, training, tourism, gadget production, to name just a few.
This invention solves the problems of connection, privacy and frequency amplitude of data transmission that are found in existing connections such as Bluetooth and Wi-Fi.
Claims
1) A Bidirectional Communication System of digital data through the visible light spectrum, in an unconfined medium of any shape, size and composition, characterized in that it contains a Transmitter Driver and a Receiver Driver.
2) Transmitter Driver according to claim 1, characterized in that it comprises: a) A voltage regulating module (See FIG. 5), designed to allow an input of a minimum of 7V and a maximum of 25V to give an output voltage of 5V, which, together with the capacitors, will set the output at 5V and filter it, consisting of: i) 1 Integrated Circuit (IC)=LM7805 ii) 1 Capacitor=0.33 uF iii) 1 Capacitor=0.1 uF b) A negative voltage converter module (See FIG. 6), designed to provide a negative current when there is a positive supply of +1.5V to +12V, using the capacitors C1 and C2 to set the switching frequency, consisting of: i) 2 Capacitors=10 uF ii) 1 Negative voltage converter (IC)=ICL7660 c) A high-speed video signal amplification module (See FIG. 7), which uses an OPAM (Operational Amplifier) for video distribution, at the output of pin 6 and which uses an LED diode to send the video signal to the receiver of the circuits R3 and R4, to establish the coupling resistance that goes to the video input and R2 and R1 to limit the current entering the LED, consisting of: i) 1 Resistance=51 Ohm (Ω) ii) 1 Resistance=1K Ohm (Ω) iii) 1 Resistance=560 Ohm (Ω) iv) 1 ultra bright blue LED.
3) Driver Receiver according to claim 1, characterized in that it comprises: a) A voltage regulation module (See FIG. 8), designed to provide current and voltage to the video receiver circuit, with an output of approximately 5 volts DC (Vdc), consisting of: i) 2 Capacitors=1 pF ii) 1 Resistance=20 Ohm (Ω) iii) 1 Chip LED indicator iv) 1 Voltage regulator (IC) 7805 of 5V b) A voltage inversion module (See FIG. 9), designed to change the positive 5 volts DC (Vdc) to negative 5 volts DC (Vdc), that is to say, from +5 Vdc to −5 Vdc., which are needed to power the operational amplifier, since its data sheet specifies that it needs a minimum of +−5 Vdc for its operation, consisting of: i) 2 Capacitors=10 uF ii) 1 Voltage converter (IC) TC7660 c) A signal amplification module (see FIG. 10), designed to receive the data from the Transmitter, amplifying the signal, then passing it through a BNC signal conversion step (Bayonet Neill-Concelman) to VGA (Graphics Array) for later viewing on the LCD (Liquid Crystal Display) display, HDMI (High-Definition Multi-media Interface) display or any monitor, consisting of: i) 3 Resistors=10K Ohm (Ω) ii) 1 Resistance=1K Ohm (Ω) iii) 1 Resistance=100 Ohm (Ω) iv) 1 SFH213 Photodiode.
Description
DESCRIPTION OF THE FIGURES
[0039] FIG. 1, shows the transmission flow of the digital signal.
[0040] FIG. 2 schematizes the Electromagnetic Spectrum and the frequency (Hz) to which they operate, identifying the range in which Visible Light operates.
[0041] FIG. 3 is a table of equivalencies of Bits according to the International System of Units.
[0042] FIG. 4 is a diagram of the video transmission operation.
[0043] FIG. 5 is a cross-section of the voltage regulating step with 5V input of the video signal Transmitter Driver.
[0044] FIG. 6 shows the negative voltage power generation step of the video signal Transmitter Driver.
[0045] FIG. 7 shows the signal amplification step of the video signal Transmitter Driver.
[0046] FIG. 8 is a cross-section of the voltage regulating step with 5V input of the video signal Receiver Driver. The block consists of the voltage regulator 7805, which regulates the voltage to 5V, passes through C3 and C4 which are 1 pf capacitors to filter the signal, and an indicator through the R7 of 220 Ohms and its LED indicator.
[0047] FIG. 9 is a cross-section of the negative voltage power generation step of the video signal Receiver Driver. The block consists of the TC7660 IC, which inverts the input voltage to a negative voltage, C1 is the reference of the same circuit and C2 is used to filter the output voltage.
[0048] FIG. 10 is a cross-section of the receiving, amplifying and sending step of signal from the video signal Receiver Driver. This block consists merely of the OPAM LM7171, which is a video amplifier and is responsible for receiving the signal through the LED 1 (Photodiode SFH213) with a R1 of 100 which goes to the non-inverter input, the OPAM having an amplification controlled by the arrangement of resistances of R2, R3, R4 and R6.
[0049] FIG. 11 shows the BNC (Bayonet Neill-Concelman) converter to VGA (Video Graphics Array) with resolution up to FULL HD, from the video signal Receiver Driver to be displayed on a PC LCD monitor.
[0050] A Bidirectional Communication System of digital data through the visible light spectrum, in an unconfined environment, integrates two devices to achieve the wireless transmission of digital data.
[0051] A Transmitter Driver, LED light and Receiver Driver that together allow: feeding electric current, regulating the voltage, converting the negative voltage, amplifying the signal, transmitting the signal to an LED, receiving the signal and finally converting the signal and transmitting the digital signal.
