# US 2015/0145409 A1 · Automotive led bleed resistor circuit and body control module interrupt wakeup circuit

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- Number: US 2015/0145409 A1
- Document ID: US20150145409A1
- Status: Published application
- Kind: A1
- Application number: 14/089,872
- Filed: 2013-11-26
- Published: 2015-05-28
- Earliest claimed: 2013-11-26
- Assignees: Panasonic Automotive Systems Company of America, Division of Panasonic Corporation of North America
- Applicants: Panasonic Automotive Systems Company of America, Division of Panasonic Corporation of North America
- Inventors: Joseph C. Whitaker
- Web page: https://patentgrep.com/patent/US20150145409A1

## CPC

- B60Q 3/80: Circuits; Control arrangements (for dashboards B60Q3/16; for mass transit vehicles B60Q3/47)
- H05B 45/00: Circuit arrangements for operating light-emitting diodes [LED]
- H05B 45/40: Details of LED load circuits
- B60Q: ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL

## Abstract

A motor vehicle includes a processor having an interrupt input. A battery includes a positive terminal. A switch interconnects the positive terminal of the battery and the interrupt input of the processor. A first resistor interconnects the positive terminal of the battery and the interrupt input of the processor. A light emitting diode includes an input and an output. A second resistor interconnects the input of the light emitting diode and the interrupt input of the processor. A third resistor is connected in parallel with a series combination of the second resistor and the light emitting diode.

## Claims

### Claim 1

A motor vehicle, comprising:
a processor including an interrupt input;
a battery including a positive terminal;
a switch interconnecting the positive terminal of the battery and the interrupt input of the processor;
a first resistor interconnecting the positive terminal of the battery and the interrupt input of the processor;
a light emitting diode including an input and an output;
a second resistor interconnecting the input of the light emitting diode and the interrupt input of the processor; and
a third resistor connected in parallel with a series combination of the second resistor and the light emitting diode.

### Claim 2 (depends on 1)

The vehicle of claim 1 wherein the switch comprises a first switch, the vehicle further comprising a second switch interconnecting the output of the light emitting diode and electrical ground.

### Claim 3 (depends on 2)

The vehicle of claim 2 wherein the second switch is configured to be controlled by a user.

### Claim 4 (depends on 1)

The vehicle of claim 1 wherein the switch is configured to be controlled by the processor.

### Claim 5 (depends on 4)

The vehicle of claim 4 wherein the switch comprises a push button switch.

### Claim 6 (depends on 1)

The vehicle of claim 1 wherein the third resistor has a resistance of approximately between 800 and 7000 ohms.

### Claim 7 (depends on 6)

The vehicle of claim 6 wherein the first resistor has a resistance of at least 25,000 ohms.

### Claim 8

A vehicle lighting circuit, comprising:
a body control module including an interrupt input;
a battery including a positive terminal;
a first switch interconnecting the positive terminal of the battery and the interrupt input of the body control module;
a first resistor interconnecting the positive terminal of the battery and the interrupt input of the body control module;
a light emitting element including an input and an output;
a second resistor interconnecting the input of the light emitting element and the interrupt input of the body control module;
a third resistor connected in parallel with a series combination of the second resistor and the light emitting element; and
a second switch interconnecting the output of the light emitting element and electrical ground.

### Claim 9 (depends on 8)

The circuit of claim 8 wherein the light emitting element comprises a light emitting diode.

### Claim 10 (depends on 8)

The circuit of claim 8 wherein the first switch is configured to be controlled by the body control module.

### Claim 11 (depends on 8)

The circuit of claim 8 wherein the second switch is configured to be controlled by a user.

### Claim 12 (depends on 11)

The circuit of claim 11 wherein the second switch comprises a push button switch.

### Claim 13 (depends on 8)

The circuit of claim 8 wherein the third resistor has a resistance of approximately between 800 and 7000 ohms.

### Claim 14 (depends on 8)

The vehicle of claim 8 wherein the first resistor has a resistance of at least 25,000 ohms.

### Claim 15

A vehicle light assembly, comprising:
a body control module including an interrupt input;
a battery including a positive terminal;
a first switch interconnecting the positive terminal of the battery and the interrupt input of the body control module;
a first resistor interconnecting the positive terminal of the battery and the interrupt input of the body control module;
a light emitting element including an input and an output;
a second resistor interconnecting the input of the light emitting element and the interrupt input of the body control module;
a third resistor connected in parallel with one of:
the light emitting element; and
a series combination of the second resistor and the light emitting element; and
a second switch interconnecting the output of the light emitting element and electrical ground.

### Claim 16 (depends on 15)

The assembly of claim 15 wherein the light emitting element comprises a light emitting diode.

### Claim 17 (depends on 15)

The assembly of claim 15 wherein the first switch is configured to be controlled by the body control module.

### Claim 18 (depends on 15)

The assembly of claim 15 wherein the second switch comprises a push button switch configured to be controlled by a user.

### Claim 19 (depends on 15)

The assembly of claim 15 wherein the third resistor has a resistance of approximately between 800 and 7000 ohms.

### Claim 20 (depends on 15)

The vehicle of claim 15 wherein the first resistor has a resistance of at least 25,000 ohms.