CN202503504U - Digital interphone with recording function - Google Patents
Digital interphone with recording function Download PDFInfo
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- CN202503504U CN202503504U CN2012201062567U CN201220106256U CN202503504U CN 202503504 U CN202503504 U CN 202503504U CN 2012201062567 U CN2012201062567 U CN 2012201062567U CN 201220106256 U CN201220106256 U CN 201220106256U CN 202503504 U CN202503504 U CN 202503504U
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Abstract
The utility model relates to a digital interphone with a recording function. A digital interphone circuit comprises a radio frequency portion, a baseband portion and a voice frequency portion, wherein the radio frequency portion is composed of a transmitter, a receiver, a phase locked loop (PLL) and an antenna; the baseband portion is composed of a high-performance processor ARM chip, a modem, a Flash memory and a voice frequency processing chip; the voice frequency portion is composed of a voice frequency power amplifier circuit, an MIC and a loudspeaker; the ARM chip is respectively connected with the Flash memory, the modem and an operation display member; the modem is respectively connected with the voice frequency processing chip, the transmitter and the receiver; the phase-locked loop (PLL) is respectively connected with the transmitter and the receiver; the transmitter, receiver and the phase-locked loop (PLL) are respectively connected with a radio frequency front-end circuit; and the radio frequency front-end circuit is connected with the antenna. The digital interphone of the utility model is advantaged in effectively reduced voice occupation space, prolonged recording time, high voice quality and less noise; and further, recording content not only can be played by the digital interphone itself, but also can be played and listened in by a long-distance interphone.
Description
Technical field
The utility model relates to digital handset equipment, particularly a kind of digital handset that possesses sound-recording function.
Background technology
Intercom moves towards digitlization by simulation; Digital handset has simulation intercom not available advantage: the availability of frequency spectrum is higher, and type of call is abundant, supports to exhale, type of call such as group calling; Data service is abundanter; Support note, speech quality is more clear, and not along with distance increases and reduction etc.And China is carrying out nationwide digitlization transition, No. 666 files of Ministry of Industry and Information's issue in 2009, and the model that clear and definite digital handset began from 2011 to stop the simulation intercom is checked and approved.The intercom digitlization industry of China at hand.
Sound-recording function is applied in increasing occasion as special a kind of memory function.Intercom is as a kind of means of communication of specialty, uses also more extensively, as hotel, security protection, large-scale competitive sports, emergency communication commander etc., all be unable to do without the application of wireless talkback.Recording combines with wireless interspeaker, makes under various special environment, can the various information of real time record, and especially to than long and the authentic and valid reduction of key message ability.
Conventional recording can only be preserved voice document with audio format, it takes up room greatly; Record length is short, can not use conventional method to realize recording for a long time and preserving in the existing intercom, therefore; How on prior art, to have breakthrough, in existing digital handset, increase long-time sound-recording function, satisfy the user under various special environment; Can the various information of real time record, especially to reduction that can be authentic and valid than long and key message.The problem that has become those skilled in the art's research and solved.Existing market does not have this type of technical products to occur as yet, and this type of technological report is not arranged in the document as yet yet, so it has the huge space of development and development.
Summary of the invention
The purpose of the utility model is exactly for overcoming the deficiency of prior art; A kind of digital handset design of supporting sound-recording function is provided; Make digital handset can support this machine sowing content that plays a record; Support through radio transmission, receives recording file intercom and can receive the playback content.
The utility model is to realize through such technical scheme: a kind of digital handset that possesses sound-recording function, comprise circuit, and it is characterized in that the digital handset circuit comprises radio frequency part, baseband portion, audio-frequency unit;
Wherein radio frequency part is made up of transmitter, receiver, phase-locked loop pll and antenna;
Baseband portion is made up of high-performance processor ARM chip, modulator-demodulator, Flash memory, Audio Processing chip;
Audio-frequency unit is by audio power amplifier circuit, and MIC and loud speaker constitute; The ARM chip connects Flash memory, modulator-demodulator and operation display part part respectively;
Modulator-demodulator is connected with Audio Processing chip, transmitter and receiver respectively; Phase-locked loop pll connects transmitter, receiver respectively, and transmitter, receiver and phase-locked loop pll are connected RF front-end circuit respectively, and RF front-end circuit connects antenna;
The ARM chip adopts STM32F103ZCE, the modulator-demodulator of ST to adopt SCT3252, Audio Processing chip to adopt AIC3104.
Beneficial effect: the utility model adopts speech coding algorithm, and voice messaging is compressed to the speed of 2.4K, has effectively reduced speech and has taken up room, and makes record length prolong, and the voice coding/decoding algorithms that adopts, and speech quality is clear, and noise is few.And utilize the characteristic that intercom can wireless talkback, and make recording substance both put through this machine sowing, also can play and listen at long-range intercom.
Description of drawings
Fig. 1, hardware connect block diagram;
Fig. 2, Recording Process sketch map;
Fig. 3, this machine sowing content sketch map that plays a record;
Fig. 4, this machine recording substance emission sketch map;
Fig. 5, long-range intercom receive the playback sketch map.
Embodiment
Understand the utility model for clearer, describe the utility model in detail in conjunction with accompanying drawing and embodiment:
As shown in Figure 1, the digital handset circuit comprises radio frequency part, baseband portion, audio-frequency unit; Wherein radio frequency part is made up of transmitter, receiver, phase-locked loop pll and antenna; Baseband portion is made up of high-performance processor ARM chip, modulator-demodulator, Flash memory, Audio Processing chip; Audio-frequency unit is by audio power amplifier circuit, and MIC and loud speaker constitute; The ARM chip connects Flash memory, modulator-demodulator and operation display part part respectively;
Baseband portion is by high-performance processor ARM chip, and the ARM chip adopts STM32F103ZCE, modulator-demodulator SCT3252, mass storage, Audio Processing chip AIC3104 and the AD/DA circuit of ST to constitute;
Audio power amplifier circuit adopts TDA8547;
Recording Process:
As shown in Figure 2, after recording started, whether processor detects was emission or accepting state, and recording is only recorded to the sound that transmits and receives.
Emission Recording Process: under emission state; Speech gets into intercom through MIC, through the AD conversion in the Audio Processing chip, is digital signal by analog variation; And speech coding is compressed through modulator-demodulator; To realize the compression of data, reduce memory space, and will deposit the data of data after the speech coding in the Flash memory through the ARM chip.
Receive Recording Process: under accepting state, modulator-demodulator carries out demodulation with the data that receive, and the data after the demodulation still for the data through speech coding, deposit these data in the Flash memory through ARM then.
As long as emission or reception do not finish, recording will continue always.Until sound-recording function is closed, End of Tape, the recording beginning is a recording section until the process that finishes.
This machine sowing process that plays a record is as shown in Figure 3, after local playback function is opened, choose the recording section after; Processor is stored in data among the Flash according to selecting to read;, be voice with reduction of data, and pass through DA tone decoding through modulator-demodulator; With digital signal conversion is analog signal, exports loud speaker to after amplifying through audio frequency power amplifier then.
Long-range intercom playback process:
Long-range intercom playback content is divided into 2 links, and first is local recording substance emission, and second is that long-range reception is play.
1) this machine recording substance emission signal is as shown in Figure 4, and after intercom read the data that deposit in the Flash memory, the process modulator-demodulator was launched through transmitter after carrying out the digital coding modulation.
2) it is as shown in Figure 5 that long-range intercom receives the playback signal; After long-range intercom receives signal; At first carry out carrying out data demodulates through modulator-demodulator; Then the data that demodulate are carried out tone decoding, decoded signal converts analog signal into through DA again, and through exporting loudspeaker plays to after the audio frequency amplifier amplification.
According to above-mentioned explanation, can realize the scheme of the utility model in conjunction with art technology.
Claims (2)
1. a digital handset that possesses sound-recording function comprises circuit, it is characterized in that, the digital handset circuit comprises radio frequency part, baseband portion, audio-frequency unit; Wherein radio frequency part is made up of transmitter, receiver, phase-locked loop pll and antenna; Baseband portion is made up of high-performance processor ARM chip, modulator-demodulator, Flash memory, Audio Processing chip; Audio-frequency unit is by audio power amplifier circuit, and MIC and loud speaker constitute; The ARM chip connects Flash memory, modulator-demodulator and operation display part part respectively;
Modulator-demodulator is connected with Audio Processing chip, transmitter and receiver respectively; Phase-locked loop pll connects transmitter, receiver respectively, and transmitter, receiver and phase-locked loop pll are connected RF front-end circuit respectively, and RF front-end circuit connects antenna.
2. the digital handset that possesses sound-recording function as claimed in claim 1 is characterized in that, the ARM chip adopts STM32F103ZCE, the modulator-demodulator of ST to adopt SCT3252, Audio Processing chip to adopt AIC3104, and audio power amplifier circuit adopts TDA8547.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201062567U CN202503504U (en) | 2012-03-21 | 2012-03-21 | Digital interphone with recording function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201062567U CN202503504U (en) | 2012-03-21 | 2012-03-21 | Digital interphone with recording function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202503504U true CN202503504U (en) | 2012-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201062567U Expired - Lifetime CN202503504U (en) | 2012-03-21 | 2012-03-21 | Digital interphone with recording function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202503504U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672945A (en) * | 2019-01-21 | 2019-04-23 | 刘垒 | A kind of portable intercommunication interconnection communication system |
-
2012
- 2012-03-21 CN CN2012201062567U patent/CN202503504U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672945A (en) * | 2019-01-21 | 2019-04-23 | 刘垒 | A kind of portable intercommunication interconnection communication system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 300462 Binhai New Area, Tianjin economic and Technological Development Zone, North Street, No. 141 Patentee after: Tianjin 712 Communications Broadcasting Limited by Share Ltd Address before: 300140 Hebei District new road, Tianjin, No. 185 Patentee before: Tianjin 712 Communication Broadcast Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121024 |