# US 2020/0288241 A1 · Electronic device having circuit structure having electric connection between designated pin included in connector electrically connectable to ground terminal of external microphone and designated ground of circuit board

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- Number: US 2020/0288241 A1
- Document ID: US20200288241A1
- Status: Published application
- Kind: A1
- Application number: 16/651,428
- Filed: 2018-09-06
- Published: 2020-09-10
- Earliest claimed: 2017-09-29
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Samsung Electronics Co., Ltd.
- Inventors: Hak-Hoon SONG; Nam-Ki KIM; Byoung-Jun KIM
- Web page: https://patentgrep.com/patent/US20200288241A1

## CPC

- H04R 1/1041: {Mechanical or electronic switches, or control elements (switches in general H01H)}
- H04R 3/007: {Protection circuits for transducers}
- H01Q 1/24: with receiving set
- H04M 1/0274: {for an electrical connector module}
- H04M 1/0277: {for a printed circuit board assembly}
- H04M 1/72412: using two-way short-range wireless interfaces
- H04R 1/1033: {Cables or cables storage, e.g. cable reels (cord reels per se H02G11/02; arrangements for storing and repeatedly paying-out and re-storing lengths of conductors or cables B65H75/34; extensible conductors or cables, e.g. self-coiling cords H01B7/06)}
- H04R 1/1091: {Details not provided for in groups H04R1/1008 - H04R1/1083}
- H04R 3/00: Circuits for transducers (arrangements for producing a reverberation or echo sound G10K15/08; amplifiers H03F)
- H04R 5/04: Circuit arrangements, {e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments (combinations of amplifiers H03F3/68; stereophonic systems H04S)}
- H04R 29/004: {for microphones (H04R29/007 takes precedence)}
- H04R 2201/107: Monophonic and stereophonic headphones with microphone for two-way hands free communication
- H04R 2420/05: Detection of connection of loudspeakers or headphones to amplifiers
- H04R 2420/07: Applications of wireless loudspeakers or wireless microphones
- H04R 2420/09: Applications of special connectors, e.g. USB, XLR, in loudspeakers, microphones or headphones
- H04R 2499/11: Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
- H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K)
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)
- H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08)

## Abstract

Various embodiments of the present invention comprise: a circuit board comprising a first grounding portion and a second grounding portion; a wireless communication circuit arranged in a first area of the circuit board, the wireless communication circuit comprising a first grounding terminal electrically connected to the first grounding portion; an audio codec circuit arranged in a second area of the circuit board, the audio codec circuit comprising a signal input terminal and a second grounding terminal electrically connected to the second grounding portion; and a connector electrically connected to the input terminal, the connector comprising a first pin that can be electrically connected to a signal terminal of a microphone included in an external electronic device and a second pin that can be electrically connected to a grounding terminal of the microphone, the second pin being electrically connectable to the second grounding portion. In addition, various other embodiments of the present invention may be possible.

## Claims

### Claim 1

An electronic device, comprising:
a circuit board including a first ground unit and a second ground unit;
a wireless communication circuit including a first ground terminal electrically connected with the first ground unit and disposed in a first area of the circuit board;
an audio codec circuit including a second ground terminal electrically connected with the second ground unit and an input terminal of signal and disposed in a second area of the circuit board; and
a connector including a first pin electrically connected with the input terminal and electrically connectable with a signal terminal of a microphone included in an external electronic device and a second pin electrically connectable with a ground terminal of the microphone, the second pin electrically connected with the second ground unit.

### Claim 2 (depends on 1)

The electronic device of claim 1, wherein the second pin is connected with an earphone feedback terminal of the audio codec circuit.

### Claim 3 (depends on 2)

The electronic device of claim 2, wherein the circuit board includes a conductive pattern connected between the second pin and the second ground terminal.

### Claim 4 (depends on 3)

The electronic device of claim 3, wherein the circuit board includes another microphone, and wherein the second pin is electrically connected with at least one terminal of the other microphone.

### Claim 5 (depends on 3)

The electronic device of claim 3, wherein the circuit board includes at least one coil connected in series between the conductive pattern and the second pin.

### Claim 6 (depends on 3)

The electronic device of claim 3, wherein the circuit board includes at least one capacitor connected in parallel between the conductive pattern and the second pin.

### Claim 7 (depends on 2)

The electronic device of claim 2, wherein the circuit board includes:
another microphone; and
a conductive pattern connected between the second pin and at least one terminal of the other microphone.

### Claim 8 (depends on 7)

The electronic device of claim 7, wherein the circuit board includes at least one coil connected in series between the conductive pattern and the second pin.

### Claim 9 (depends on 7)

The electronic device of claim 7, wherein the circuit board includes at least one capacitor connected in parallel between the conductive pattern and the second pin.

### Claim 10 (depends on 1)

The electronic device of claim 1, wherein the circuit board includes at least one filter circuit electrically connected between the first ground unit and the second ground unit.

### Claim 11 (depends on 1)

The electronic device of claim 1, further comprising an earphone jack connector forming an opening in an outer appearance of the electronic device, wherein the first pin and the second pin are disposed in the opening.

### Claim 12 (depends on 1)

The electronic device of claim 1, wherein the first pin is electrically connected with a microphone input terminal of the audio codec circuit, and the second pin is electrically connected with an earphone feedback terminal of the audio codec circuit, and wherein the second pin is directly connected with the second ground terminal of the audio codec circuit by a conductive pattern.