Published US Patent 9,569,949 Smartphone Charging Alarm Feedback Device For Sale

Published US Patent 9,569,949  Smartphone Charging Alarm Feedback Device


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Published US Patent 9,569,949 Smartphone Charging Alarm Feedback Device:
$600,000

Published US Patent 9,569,949 Smartphone Charging Alarm response Device
Will consider any offers for out right purchase of this patent or licensing agreement.
Key features of this invention:Compatibility: While designed with smartphones in mind, it is compatible with any electronic device that uses a Universal Serial Bus (USB) charger. This includes but is not limited to smartphones, PDAs, MP3 players, bluetooth speakers and other devices. The potential application and market is HUGE!
Convenience: Provides instant notification of when your electronic device is fully charged by audible alarm or flashing LED light.
Visually Impaired device users: Easily locate and know when electronic devices are charged.
Safety: Prevent overcharging of device batteries. Some battery types life span can be reduced by excessive charging or overcharging.
Full patent text below:

SMARTPHONE CHARGING ALARM response DEVICE

FIELD OF THE INVENTION

BACKGROUND OF THE INVENTION

SUMMARY OF THE INVENTION

BRIEF DESCRIPTION OF THE DRAWINGS

DETAILED DESCRIPTION

PREFERRED EMBODIMENT OF THE INVENTION

ABSTRACT

CLAIMS

What is claimed is:

1. An electronic circuit for indicating when a smart phone is charged, the electronic circuit

comprising:

a operational amplifier circuit for sensing current draw of the smart phone;

a first comparator circuit for detecting smart phone and charger are connected to the electronic circuit;

a second comparator circuit for monitoring smart phone charge status;

a buzzer pulse generator circuit for driving a piezo buzzer and light emitting diode;

a relay circuit for disabling the buzzer pulse generator circuit;

a audible piezo buzzer circuit for audible alarm when the smart phone is charged;

a first light emitting diode circuit for visual alarm when the smart phone is charged;

a second light emitting diode circuit for indicating when the electronic circuit is connected to a power supply;

a first connector for enabling connection to the smart phone; and

a second connector for enabling connection to the smart phone charger.

2. The electronic circuit of Claim 1, wherein all components of the electronic circuit are

contained on a single printed circuit board.

3. The printed circuit board of Claim 2, wherein the printed circuit board is enclosed in a plastic

enclosure.

4. The operational amplifier circuit of Claim 1, further comprising:

a first resistor of the operational amplifier circuit coupled between the ground node of the input voltage and the ground node of the smart phone;

a second and third resistor of the operational amplifier circuit configured to provide a reference voltage proportional to the current draw across the first resistor of the operational amplifier circuit;

a fourth and fifth resistor of the operational amplifier circuit configured amplify the output of an operational amplifier; and

a operational amplifier of the operational amplifier circuit configured with resistors of the operational amplifier circuit wherein the output voltage of the operational amplifier varies proportionally to current draw across the first resistor of the operational amplifier circuit.

5. The first comparator circuit of Claim 1, further comprising:

a first and second resistor of the first comparator circuit configured in series between +5v node and ground node to provide a reference voltage; and

a operational amplifier of the first comparator circuit configured to compare a reference voltage connected to + non-inverting input to the output of the operational amplifier circuit of claim 1 connected to the - inverting input.

6. The second comparator circuit of Claim 1, further comprising:

a first and second resistor of the second comparator circuit configured in series between +5v node and ground node to provide a reference voltage; and

a operational amplifier of the second comparator circuit configured to compare the reference voltage connected to - inverting input to the output of the operational amplifier circuit of claim 1 connected to the + non-inverting input, the output coupled to +5v node with a third resistor of the second comparator circuit and the output connected to the normally open contact of the relay in the relay circuit of Claim 7.

7. The relay circuit of Claim 1, further comprising:

a relay with one side of coil connected to +5v node, the other side connected to a collector of a transistor of the relay circuit, one side of the normally open contacts is connected to the output of the second comparator circuit of Claim 1, the common side of the normally open contact is connected to Reset and V+ of the buzzer pulse generator circuit of Claim 1; and

a transistor of the relay circuit configured with a first and second resistor of the relay circuit wherein the base of the transistor of the relay circuit is driven by the output of the first comparator circuit of Claim 1, the emitter of the transistor of the relay circuit is connected to ground.

8. The buzzer pulse generator circuit of Claim 1, further comprising:

a LM555 timer integrated circuit (IC) wherein the Reset and V+ pins are connected to the common contact of the relay of Claim 7, the output pin is configured with a first and second resistor of the buzzer pulse generator circuit to provide a reference voltage capable of driving the base of a transistor in the audible buzzer circuit of Claim 1, the Discharge pin is configured with a third and fourth resistor of the buzzer pulse generator circuit in series with a first capacitor of the buzzer pulse generator circuit to set the rate of the LM555 output discharge voltage, the trigger pin (TRIG) and Threshold pin (THR) are connected between the fourth resistor of the buzzer pulse generator circuit and a first capacitor of the buzzer pulse generator circuit to enable / disable the LM555 IC when power is applied / disconnected, the Control Pin (CV) is connected to ground node through a second capacitor of the buzzer pulse generator circuit to filter the supply voltage, the Ground pin (GND) is connected to ground node.

9. The audible buzzer circuit of Claim 1, further comprising:

a piezo buzzer connected to +5v node through a first resistor of the audible buzzer circuit and a switch of the audible buzzer circuit used for muting the piezo buzzer; and

a transistor of the audible buzzer circuit wherein the collector is connected to the other side of the piezo buzzer of the audible buzzer circuit, the base is connected to the output of the buzzer pulse generator circuit of claim 8, the emitter is connected to ground node.

10. The first light emitting diode (LED) circuit of Claim 1, further comprising:

a LED of the first LED circuit with the anode connected to +5v node through a resistor of the first LED circuit, the cathode connected to the collector of a transistor of the audible buzzer circuit of Claim 9.

11. The second light emitting diode (LED) circuit of Claim 1, further comprising:

a LED of the second LED circuit with the anode connected to +5v node through a resistor of the second LED circuit, the cathode connected to ground node.

12. The first connector of Claim 1, further comprising:

a female Universal Serial Bus (USB) connector.

13. The second connector of Claim 1, further comprising:

a male Universal Serial Bus (USB) Cable wherein one end is connected to the electronic circuit of Claim 1 and the male USB cable having a fixed length.

14. A method for connecting the electronic circuit of Claim 1 to the user’s existing smart phone,

the method comprising:

plugging one end of a universal serial bus (USB) cable into the first connector of Claim 12; and

plugging the other end of a USB cable into the USB port of the user’s smart phone.

15. A method for connecting the electronic circuit of Claim 1 to the user’s existing smart phone

charger, the method comprising:

plugging the open end of the USB cable of Claim 13 to the USB port of the user’s existing smart phone charger.

16. A method for muting the electronic circuit of Claim 1, the method comprising:

sliding the switch of the audible buzzer circuit of Claim 9 to the mute position


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