Patent US5682418A successfully refreshed from Google Patents.
US5682418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structure for mounting a microphone on a portable radio telephone
Assignee: NEC Corp
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Filing: 1996-01-16
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Granted: 1997-10-28
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Expires: 2016-01-16
Abstract
Abstract In a portable radio telephone powered by a removable rechargeable battery, a differential microphone having a first and a second microphone element is mounted. A front sound collecting hole is formed in the front of the casing of the telephone and includes the first microphone element. The front sound collecting hole constitutes a transmitter portion. A rear sound collecting hole is formed in a portion of the battery directly opposite in position to the front sound collecting hole. The rear hole is communicated by a passageway to a rear sound collecting portion included in the differential microphone. Speech and noise around the telephone are input to the front hole while only noise, which is opposite in phase to the noise input to the front hole, is input to the rear hole. As a result, the noise input to the front and rear holes cancel each other. The rear hole is formed in a portion of the battery where a space is present. When the rear hole is directly formed in a generating member included in the battery, the inner periphery of the generating member defining the hole is covered with a member made of resin. If desired, the rear hole may be implemented by a through hole, in which case the differential microphone will be inserted in the through hole.
Inventors
- 👤 Yoshiyuki Ide
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:55
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/03; H04M1/19; H04R; H04R1/00; H04R1/20; H04R1/32; H04R1/34; H04R1/38
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
254 words
A structure for mounting a microphone on a portable radio telephone having a casing, comprising: an operating section comprising numeral keys and function keys; a rechargeable battery removably mounted on a rear of said casing of the telephone and said battery having a hole formed therethrough, said battery including an outer covering, a generating member within said outer covering and a space within said outer covering, a first section of said generating member being positioned on a first side of said hole and a second section of said generating member being positioned on a second side of said hole opposite said first side and said space being positioned between said first section and said second section of said generating member and adjacent said hole; a differential microphone including a first microphone element and a second microphone element; a front sound collecting hole comprising a transmitter portion for transmitting sound to said first microphone element of said differential microphone; a rear sound collecting hole formed in said hole in said battery and directly opposite in position to said front sound collecting hole; a passageway for connecting said rear sound collecting hole and a rear sound collecting portion which is formed by said second microphone element of said differential microphone; a rubber packing interposed between said battery and said casing; and a circuit connected to said differential microphone, for suppressing surrounding noise, comprising a subtractor for receiving output signals of said first and second microphone elements and an equalizer for receiving an output of said subtractor.
Claim 2
Dependent Claim
254 words
A structure for mounting a microphone on a portable radio telephone having a casing, comprising: an operating section comprising numeral keys and function keys; a rechargeable battery removably mounted on a rear of said casing of the telephone and said battery having a hole formed therethrough, said battery including an outer covering, a generating member within said outer covering and a space within said outer covering, a first section of said generating member being positioned on a first side of said hole and a second section of said generating member being positioned on a second side of said hole opposite said first side and said space being positioned between said first section and said second section of said generating member and adjacent said hole; a differential microphone including a first microphone element and a second microphone element; a front sound collecting hole comprising a transmitter portion for transmitting sound to said first microphone element of said differential microphone; a rear sound collecting hole formed in said hole in said battery and directly opposite in position to said front sound collecting hole; a passageway for connecting said rear sound collecting hole and a rear sound collecting portion which is formed by said second microphone element of said differential microphone; a rubber packing interposed between said battery and said casing; and a circuit connected to said differential microphone, for suppressing surrounding noise, comprising a subtractor for receiving output signals of said first and second microphone elements and an equalizer for receiving an output of said subtractor.
Claim 3
Dependent Claim
29 words
A structure as claimed in claim 1, wherein said differential microphone is positioned between said rear sound collecting hole formed in said battery and said front sound collecting hole.
Claim 4
Dependent Claim
223 words
A structure for mounting a microphone on a portable radio telephone having a casing, comprising: an operating section comprising numeral keys and function keys; a rechargeable battery removably mounted on a rear of said casing of the telephone and said battery having a hole formed therethrough, said battery including an outer covering, a generating member within said outer covering and a space within said outer covering, a first section of said generating member being positioned on a first side of said hole and a second section of said generating member being positioned on a second side of said hole opposite said first side and said space being positioned between said first section and said second section of said generating member and adjacent said hole; a differential microphone including a first microphone element; a front sound collecting hole comprising a transmitter portion for transmitting sound to said first microphone element of said differential microphone; a rear sound collecting hole formed in said hole through said battery; a non-linear passageway for connecting said front and rear sound collecting holes; a rubber packing interposed between said battery and said casing; and a circuit connected to said differential microphone, for suppressing surrounding noise, comprising a subtractor for receiving output signals of said first and second microphone elements and an equalizer for receiving an output of said subtractor.
Claim 5
Dependent Claim
223 words
A structure for mounting a microphone on a portable radio telephone having a casing, comprising: an operating section comprising numeral keys and function keys; a rechargeable battery removably mounted on a rear of said casing of the telephone and said battery having a hole formed therethrough, said battery including an outer covering, a generating member within said outer covering and a space within said outer covering, a first section of said generating member being positioned on a first side of said hole and a second section of said generating member being positioned on a second side of said hole opposite said first side and said space being positioned between said first section and said second section of said generating member and adjacent said hole; a differential microphone including a first microphone element; a front sound collecting hole comprising a transmitter portion for transmitting sound to said first microphone element of said differential microphone; a rear sound collecting hole formed in said hole through said battery; a non-linear passageway for connecting said front and rear sound collecting holes; a rubber packing interposed between said battery and said casing; and a circuit connected to said differential microphone, for suppressing surrounding noise, comprising a subtractor for receiving output signals of said first and second microphone elements and an equalizer for receiving an output of said subtractor.
Claim 6
Dependent Claim
259 words
A structure for mounting a microphone on a portable radio telephone having a casing, comprising: an operating section comprising numeral keys and function keys; a rechargeable battery removably mounted on a rear of said casing of the telephone comprising a generating member having a hole formed therethrough, said battery including an outer covering, a generating member within said outer covering and a space within said outer covering, a first section of said generating member being positioned on a first side of said hole and a second section of said generating member being positioned on a second side of said hole opposite said first side and said space being positioned between said first section and said second section of said generating member and adjacent said hole; a differential microphone including a first microphone element and a second microphone element; a front sound collecting hole comprising a transmitter portion for transmitting sound to said first microphone element of said differential microphone; a rear sound collecting hole formed in said hole through said generating member of said battery and directly opposite in position to said front sound collecting hole; a member comprising resin for covering an inner periphery of said hole through said generating member; a passageway for connecting said front and rear sound collecting holes; a rubber packing interposed between said battery and said casing; and a circuit connected to said differential microphone, for suppressing surrounding noise, comprising a subtractor for receiving output signals of said first and second microphone elements and an equalizer for receiving an output of said subtractor.
Claim 7
Dependent Claim
259 words
A structure for mounting a microphone on a portable radio telephone having a casing, comprising: an operating section comprising numeral keys and function keys; a rechargeable battery removably mounted on a rear of said casing of the telephone comprising a generating member having a hole formed therethrough, said battery including an outer covering, a generating member within said outer covering and a space within said outer covering, a first section of said generating member being positioned on a first side of said hole and a second section of said generating member being positioned on a second side of said hole opposite said first side and said space being positioned between said first section and said second section of said generating member and adjacent said hole; a differential microphone including a first microphone element and a second microphone element; a front sound collecting hole comprising a transmitter portion for transmitting sound to said first microphone element of said differential microphone; a rear sound collecting hole formed in said hole through said generating member of said battery and directly opposite in position to said front sound collecting hole; a member comprising resin for covering an inner periphery of said hole through said generating member; a passageway for connecting said front and rear sound collecting holes; a rubber packing interposed between said battery and said casing; and a circuit connected to said differential microphone, for suppressing surrounding noise, comprising a subtractor for receiving output signals of said first and second microphone elements and an equalizer for receiving an output of said subtractor.
Claim 8
Dependent Claim
29 words
A structure as claimed in claim 4, wherein said differential microphone is positioned between said rear sound collecting hole formed in said battery and said front sound collecting hole.
Claim 9
Dependent Claim
202 words
A structure for mounting a microphone on portable electronic equipment having a body, comprising: a rechargeable battery removably mounted on a rear of said body and said battery having a hole therethrough, said battery including an outer covering, a generating member within said outer covering and a space within said outer covering, a first section of said generating member being positioned on a first side of said hole and a second section of said generating member being positioned on a second side of said hole opposite said first side and said space being positioned between said first section and said second section of said generating member and adjacent said hole; a differential microphone including a first microphone element and a second microphone element; a front sound collecting hole for inputting sound from the front of said body into said differential microphone; a rear sound collecting hole formed in said hole through said battery for inputting sound from the rear of said body into said differential microphone; and a circuit connected to said differential microphone, for suppressing surrounding noise, comprising a subtracter for receiving output signals of said first and second microphone elements and an equalizer for receiving an output of said subtractor.
Claim 10
Dependent Claim
202 words
A structure for mounting a microphone on portable electronic equipment having a body, comprising: a rechargeable battery removably mounted on a rear of said body and said battery having a hole therethrough, said battery including an outer covering, a generating member within said outer covering and a space within said outer covering, a first section of said generating member being positioned on a first side of said hole and a second section of said generating member being positioned on a second side of said hole opposite said first side and said space being positioned between said first section and said second section of said generating member and adjacent said hole; a differential microphone including a first microphone element and a second microphone element; a front sound collecting hole for inputting sound from the front of said body into said differential microphone; a rear sound collecting hole formed in said hole through said battery for inputting sound from the rear of said body into said differential microphone; and a circuit connected to said differential microphone, for suppressing surrounding noise, comprising a subtracter for receiving output signals of said first and second microphone elements and an equalizer for receiving an output of said subtractor.
Claim 11
Dependent Claim
31 words
A structure as claimed in claim 6, wherein said differential microphone is positioned between said rear sound collecting hole which is formed in said battery and said front sound collecting hole.
Claim 12
Dependent Claim
37 words
A structure as claimed in claim 7, wherein said rear sound collecting hole is formed in a portion of said battery where a space is present and directly opposite in position to said front sound collecting hole.
Claim 13
Dependent Claim
21 words
A structure as claimed in claim 6, wherein said front and rear sound collecting holes are connected by a linear passageway.
Claim 14
Dependent Claim
21 words
A structure as claimed in claim 6, wherein said front and rear sound collecting holes are connected by a non-linear passageway.
Claim 15
Dependent Claim
224 words
A structure for mounting a microphone on portable electronic equipment having a body, comprising: a rechargeable battery removably mounted on a rear of said body comprising a generating member having a hole formed therethrough, said battery including an outer covering, a generating member within said outer covering and a space within said outer covering, a first section of said generating member being positioned on a first side of said hole and a second section of said generating member being positioned on a second side of said hole opposite said first side and said space being positioned between said first section and said second section of said generating member and adjacent said hole; a differential microphone including a first microphone element and a second microphone element; a front sound collecting hole for inputting sound from a front of said body into said differential microphone; a rear sound collecting hole formed in said hole through said generating member of said battery for inputting sound from a rear of said body into said differential microphone; a member comprising resin for covering an inner periphery of said hole through said generating member; and a circuit connected to said differential microphone, for suppressing surrounding noise, comprising a subtractor for receiving output signals of said first and second microphone elements and an equalizer for receiving an output of said subtractor.
Claim 16
Dependent Claim
224 words
A structure for mounting a microphone on portable electronic equipment having a body, comprising: a rechargeable battery removably mounted on a rear of said body comprising a generating member having a hole formed therethrough, said battery including an outer covering, a generating member within said outer covering and a space within said outer covering, a first section of said generating member being positioned on a first side of said hole and a second section of said generating member being positioned on a second side of said hole opposite said first side and said space being positioned between said first section and said second section of said generating member and adjacent said hole; a differential microphone including a first microphone element and a second microphone element; a front sound collecting hole for inputting sound from a front of said body into said differential microphone; a rear sound collecting hole formed in said hole through said generating member of said battery for inputting sound from a rear of said body into said differential microphone; a member comprising resin for covering an inner periphery of said hole through said generating member; and a circuit connected to said differential microphone, for suppressing surrounding noise, comprising a subtractor for receiving output signals of said first and second microphone elements and an equalizer for receiving an output of said subtractor.
Claim 17
Dependent Claim
31 words
A structure as claimed in claim 11, wherein said differential microphone is located between said rear sound collecting hole which is formed in said battery and said front sound collecting hole.
Claim 18
Dependent Claim
12 words
A structure as in claim 1, wherein said passageway has an L-shape.
Claim 19
Dependent Claim
28 words
A structure as in claim 1, wherein said differential microphone is positioned between said rear sound collecting hole formed in said battery and said front sound collecting hole.
Claim 20
Dependent Claim
20 words
A structure as in claim 8, wherein said front and rear sound collecting holes are connected by a linear passageway.
Claim 21
Dependent Claim
20 words
A structure as in claim 8, wherein said front and rear sound collecting holes are connected by a non-linear passageway.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-10-27 | 2001-04-28 | 2001-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-10-27 | 2005-04-28 | 2005-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-10-27 | 2009-04-28 | 2009-10-28 | $7700.00 | Window Closed / Lapsed |