CN2884733Y - Cell phone having double pick-up devices - Google Patents
Cell phone having double pick-up devices Download PDFInfo
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- CN2884733Y CN2884733Y CN 200620022811 CN200620022811U CN2884733Y CN 2884733 Y CN2884733 Y CN 2884733Y CN 200620022811 CN200620022811 CN 200620022811 CN 200620022811 U CN200620022811 U CN 200620022811U CN 2884733 Y CN2884733 Y CN 2884733Y
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- mobile phone
- pick
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Abstract
The utility model relates to a mobile phone with two pickup devices, comprising a first pickup device that is connected to a first filter, the filter is connected to a first amplifier, while said amplifier is connected to said first modulus converter, the mobile phone further comprises: a second pickup device, the second pickup device is connected to a second filter, said second filter is connected to a second amplifier, while the second amplifier is connected to a second modulus converter; said first and second modulus converters are respectively connected to an offset unit. The utility model of mobile phone with two pickup devices may reduce the disturbance of noise signal to tone, eliminate disturbing signal, improve signal-noise ratio and therefore ensures communicating quality.
Description
Technical field
The utility model relates to a kind of mobile communication terminal, particularly relates to a kind of mobile phone that has turnover pickup.
Background technology
At present, the mobile communication terminal product becomes a common tool in people's life gradually, and its function is enriched constantly, and performance is more and more perfect, and people are also more and more higher to the quality requirements of communication products such as mobile phone.
Many times, people need that environment is very noisy around, and under the very big outdoor conditions of noise, for example: ground such as market, restaurant, station use mobile phone.At this moment the microphone of mobile phone has not only received the user's voice signal, also has to receive a large amount of noise signals from surrounding environment simultaneously.Under such interference, the recipient can not hear user's information conveyed clearly, and the process of conversation has been subjected to seriously influencing.
The main flow mobile phone products is used the structure of single pick-up mostly now, and its voice link schematic diagram up and down see also shown in Figure 1:
After microphone 101 receives analog voice signal, by filter 102 and according to the audio-frequency test standard, the signal that makes certain section wavelength by and filter other signal and noise.Subsequently, carry out the amplification of signal by amplifier 103.By an analog-to-digital conversion (A/D) module 104, this amplified analog signal being taken a sample, quantize, encoded again, is digital signal with this analog signal conversion.Digital signal is passed through FIR filter 105 again, and its filter factor has defined the frequency response of system, and is sent to speech coding module 106 and encodes.When playing voice, digital signal after 108 filtering of FIR filter, is delivered to PCM sample collection module 109, and is converted to analog signal through D/A switch module 110 through decoder module 107 decodings, after amplifier 111 amplifies, plays by MIC112 again.Sidetone in that A/D modular converter 104 produces then directly is sent to PCM sample collection module 109.
As seen, in the existing structure, do not take the design of special reduction noise jamming.The influence that this problem is brought is outstanding day by day, and therefore, effective solution of this problem can improve the mobile phone signal to noise ratio greatly, guarantees speech quality.
Summary of the invention
Technical problem underlying to be solved by this invention is, reduces the interference of noise signal to voice, eliminates interference signal, guarantees speech quality.
To achieve these goals, the invention discloses a kind of mobile phone of turnover pickup, comprise first pick-up, this first pick-up links to each other with first filter, and this filter links to each other with first amplifier, and this amplifier links to each other with first analog to digital converter, also comprises:
Second pick-up, this second pick-up links to each other with second filter, and this second filter links to each other with second amplifier, and this second amplifier links to each other with second analog to digital converter;
First and second analog to digital converter is connected respectively to an offset unit.
Described offset unit is the data processing chip of an opposite polarity accumulator or mobile phone.
Described first pick-up can be arranged on the keyboard bottom or the mobile phone bottom of mobile phone, and second pick-up is arranged on the zone of the trip shaft both sides of distance first pick-up bar phone stage casing far away or the back side or clamshell phone.
Described offset unit also can link to each other with an amplifier that is used to amplify voice signal.
The path at the described second pick-up place can be provided with a channel selector that is used to close this second pick-up.
Turnover pickup mobile phone of the present invention can reduce the interference of noise signal to voice, eliminates interference signal, improves signal to noise ratio, guarantees speech quality.
Description of drawings
Fig. 1 is link principle schematic about the voice of existing mobile phone;
Fig. 2 is primary structure figure of the present invention;
Fig. 3 is a MIC physical location schematic diagram of the present invention.
Wherein, Reference numeral:
101 microphones, 102,210,220 filters
103,111,211,221 amplifiers, 104 analog-to-digital conversion (A/D) module
105,108 FIR filters, 106 speech coding modules
107 decoder modules, 109 PCM sample collection modules
110 D/A switch modules, 112,1,2 MIC
212,222 AD converter, 303 antennas
304 loud speaker A renovate axle
200 accumulators
Embodiment
The present invention is mainly by adding in addition a MIC, i.e. pick-up is collected the noise in the middle of the environment, and balances out the method for the suitable noise of intensity among original MIC, and interferences that abate the noise improves the definition of conversing.
Primary structure figure of the present invention sees also Fig. 2.As figure shows, the present invention includes MIC1, MIC2, be in respectively on two paths, the hardware configuration of these two paths all to prior art in similar.The MIC1 path comprises filter 210, amplifier 211, AD converter 212.By parameter setting to this filter 210, can make the voice signal of collecting via MIC1 certain section wavelength signal by and filter other signal and noise, to meet the needs of audio-frequency test standard.Subsequently, this meets the amplification of the signal of specific criteria through amplifier 211, and be sent to AD converter 212 and take a sample, quantize, encode, be digital signal with analog signal conversion.Simultaneously, the MIC2 path comprises filter 220, amplifier 221, AD converter 222.The function of each device corresponding device function basic and in the MIC1 path is identical.
See also Fig. 3, as shown be MIC physical location schematic diagram of the present invention.MIC1 is placed on cell phone keyboard below, the end of mobile phone.MIC2 then is placed on as far as possible the position away from MIC1, simultaneously also need be as far as possible away from the antenna for mobile phone shown in the figure 303 and be positioned at screen top, the loud speaker 304 on the top of the mobile phone of expansion.What be that MIC2 should be arranged on clamshell phone is center line to renovate an A, renovates in the two side areas of axle near this; The perhaps middle section position of bar phone, the back side.The MIC1 that is located at the mobile phone end is main pick-up, and when the user picked up mobile phone communication, its position was near speech source, and the voice signal that obtains is also clear.Simultaneously, because MIC2 is less important pick-up, its position is far away, will decay to some extent when the voice of GuMIC1Chu arrive the MIC2 place, and promptly the intensity of these two voice signals that pick-up obtained differs widely.But for large-area noise source on every side, the position difference of MIC1, MIC2 can be ignored, and that is to say that the received noise signal of MIC1, MIC2 can regard as just the same.
Please in conjunction with Fig. 2 and Fig. 3, the mixing that MIC1, MIC2 receive the analog signal of voice signal and noise signal, after filtering, amplification, analog-to-digital conversion, import an offset unit simultaneously with the form of digital signal, promptly an opposite polarity accumulator 200 carries out additive operation.Strong voice signal among the MIC1 has been balanced out partial data by the more weak voice signal among the MIC2, and the noise signal that equates among two MIC is cancelled substantially.For the signal that farthest abates the noise, can the parameter of two noise signals be equated by regulating the amplifier in two paths, in additive operation, can offset fully.This accumulator 200 can utilize original data processing chip in the mobile phone, under the prerequisite that does not increase additional devices, can realize more function like this.After carrying out additive operation, if though noise be cancelled, but that voice signal is subdued is very serious, the follow-up amplifier that can add again is to amplify voice signal.After this, signal is sent to each functional module of original mobile phone, handles and transmit.
Certainly in the MIC2 path, definite needs of the characterisitic parameter of filter 220 pass through following steps: at first, according to prior art,, determine the Ha (jw) of filter 210 according to the audio-frequency test standard, and under the situation of having only environmental interference to exist, two paths receive only noise signal, do additive operation after, be foundation with this output effect, regulate the Hb (jw) of filter 220, make its error ε output minimum.
Certainly, among another embodiment of this programme, also can be this MIC2 channel setting one channel selector, when the cellphone subscriber when non-voice is exported, can close the function of this MIC2, save power.
Utilize the present invention can significantly reduce noise, especially in the noisy environment of being everlasting, make telephonic user, will obviously experience technique effect of the present invention.
Claims (6)
1, a kind of mobile phone of turnover pickup comprises first pick-up, and this first pick-up links to each other with first filter, and this filter links to each other with first amplifier, and this amplifier links to each other with first analog to digital converter, it is characterized in that, also comprises:
Second pick-up, this second pick-up links to each other with second filter, and this second filter links to each other with second amplifier, and this second amplifier links to each other with second analog to digital converter;
First and second analog to digital converter is connected respectively to an offset unit.
2, the mobile phone of turnover pickup as claimed in claim 1 is characterized in that, this offset unit is the data processing chip of an opposite polarity accumulator or mobile phone.
3, the mobile phone of turnover pickup as claimed in claim 1 is characterized in that, this first pick-up can be arranged on the keyboard bottom or the mobile phone bottom of mobile phone.
As the mobile phone of claim 1 or 3 described turnover pickups, it is characterized in that 4, this second pick-up is arranged on the contiguous zone, trip shaft both sides of distance first pick-up bar phone stage casing far away or the back side or clamshell phone.
5, the mobile phone of turnover pickup as claimed in claim 1 is characterized in that, this offset unit also can link to each other with an amplifier that is used to amplify voice signal.
6, the mobile phone of turnover pickup as claimed in claim 1 is characterized in that, the path at this second pick-up place can be provided with a channel selector that is used to close this second pick-up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620022811 CN2884733Y (en) | 2006-03-08 | 2006-03-08 | Cell phone having double pick-up devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620022811 CN2884733Y (en) | 2006-03-08 | 2006-03-08 | Cell phone having double pick-up devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2884733Y true CN2884733Y (en) | 2007-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620022811 Expired - Lifetime CN2884733Y (en) | 2006-03-08 | 2006-03-08 | Cell phone having double pick-up devices |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102098372A (en) * | 2010-12-28 | 2011-06-15 | 上海恒途信息科技有限公司 | Method and device for intelligently adjusting receiver volume of handheld device |
| CN103079143A (en) * | 2012-12-20 | 2013-05-01 | 广州视睿电子科技有限公司 | Pickup method and system |
| CN104244153A (en) * | 2013-06-20 | 2014-12-24 | 上海耐普微电子有限公司 | Ultralow-noise high-amplitude audio capture digital microphone |
| WO2015081581A1 (en) * | 2013-12-03 | 2015-06-11 | 深圳市华星光电技术有限公司 | Method for avoiding interference in pulse signal and terminal applicable thereto |
| US9130625B2 (en) | 2013-12-03 | 2015-09-08 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Interference avoidance method of pulse signal and terminal applicable thereto |
| CN108562355A (en) * | 2017-12-12 | 2018-09-21 | 重庆邮电大学 | A kind of processing method suitable for turnover pickup mill sound signal |
| CN109199123A (en) * | 2017-06-30 | 2019-01-15 | 佛山市顺德区美的电热电器制造有限公司 | Transport device, transmissibility measurement method and the cooking apparatus of solid material |
-
2006
- 2006-03-08 CN CN 200620022811 patent/CN2884733Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102098372A (en) * | 2010-12-28 | 2011-06-15 | 上海恒途信息科技有限公司 | Method and device for intelligently adjusting receiver volume of handheld device |
| CN103079143A (en) * | 2012-12-20 | 2013-05-01 | 广州视睿电子科技有限公司 | Pickup method and system |
| CN104244153A (en) * | 2013-06-20 | 2014-12-24 | 上海耐普微电子有限公司 | Ultralow-noise high-amplitude audio capture digital microphone |
| WO2015081581A1 (en) * | 2013-12-03 | 2015-06-11 | 深圳市华星光电技术有限公司 | Method for avoiding interference in pulse signal and terminal applicable thereto |
| US9130625B2 (en) | 2013-12-03 | 2015-09-08 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Interference avoidance method of pulse signal and terminal applicable thereto |
| CN109199123A (en) * | 2017-06-30 | 2019-01-15 | 佛山市顺德区美的电热电器制造有限公司 | Transport device, transmissibility measurement method and the cooking apparatus of solid material |
| CN108562355A (en) * | 2017-12-12 | 2018-09-21 | 重庆邮电大学 | A kind of processing method suitable for turnover pickup mill sound signal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: LANGCHAO LEJIN DIGITAL MOBILE COMMUNICATION CO., L Free format text: FORMER OWNER: LG ELECTRONICS (CHINA) R + D CENTER CO., LTD. Effective date: 20120330 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100022 CHAOYANG, BEIJING TO: 264001 YANTAI, SHANDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120330 Address after: 264001 No. 228 Changjiang Road, Yantai economic and Technological Development Zone, Shandong, China Patentee after: Langchao Lejin Digital Mobile Communication Co., Ltd. Address before: 100022 Beijing city Chaoyang District Jianguomenwai Street No. 12 b Gemini building 18 layer tower Patentee before: LG Electronic (China) Research and Development Center Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20070328 |
|
| EXPY | Termination of patent right or utility model |