CN203120092U - Connecting system of law enforcement recorder and interphone and connecting wire thereof - Google Patents
Connecting system of law enforcement recorder and interphone and connecting wire thereof Download PDFInfo
- Publication number
- CN203120092U CN203120092U CN 201320097478 CN201320097478U CN203120092U CN 203120092 U CN203120092 U CN 203120092U CN 201320097478 CN201320097478 CN 201320097478 CN 201320097478 U CN201320097478 U CN 201320097478U CN 203120092 U CN203120092 U CN 203120092U
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- law
- enforcing recorder
- intercom
- law enforcement
- interphone
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Abstract
A connecting system of a law enforcement recorder and an interphone comprises the law enforcement recorder, the interphone and a connecting wire which enables the output end of the interphone and a loudspeaker of the law enforcement recorder to be connected, and the connecting wire is provided with a power amplifier. The connecting wire is used for connecting the law enforcement recorder and the interphone, the connecting wire is provided with the power amplifier which is used for amplifying output of the interphone and then supplying the output to the loudspeaker of the law enforcement recorder. The connecting system can enable the law enforcement recorder and the interphone with weak output signals to be compatible, and meanwhile increase of the size and the cost of the law enforcement recorder caused by the fact that a compatible component is arranged is avoided.
Description
Technical field
The utility model relates to the voice signal multiplying arrangement, especially relates to a kind of law-enforcing recorder and intercom connected system and connecting line thereof.
Background technology
Existing intercom, the signal of different model output is strong and weak may be different, incompatible when this often causes law-enforcing recorder to dock with the intercom of different model.For example, the signal that being used for of the digital handset MTP850 of MOTOROLA company output drives loudspeaker and miaow head all very a little less than, generally can't drive loudspeaker and miaow head in the law-enforcing recorder, and the driving signal of the intercom of other model is all more intense, with all normally sounding intercommunications after law-enforcing recorder is connected.Make law-enforcing recorder self accomplish intercom compatibility to weak output, to face following problem: one, the volume of law-enforcing recorder is little originally, be difficult to increase in order to realize compatible components and parts, and in case increase such components and parts, then can make the law-enforcing recorder that does not need the intercom with weak driving signal to be used increase unnecessary cost; Its two, as connecting the weak intercom that drives signal after the transformation of law-enforcing recorder inside, law-enforcing recorder just might connect the intercom of other model.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of law-enforcing recorder and intercom connected system are provided, make law-enforcing recorder to the intercom compatibility of weak output signal, can avoid simultaneously because law-enforcing recorder volume that compatible components and parts bring and the increase of cost are set.
It is a kind of for the connecting line that connects law-enforcing recorder and intercom that another purpose is to provide, and makes law-enforcing recorder to the intercom compatibility of weak output signal.
For achieving the above object, the utility model is by the following technical solutions:
A kind of law-enforcing recorder and intercom connected system comprise the connecting line that law-enforcing recorder, intercom and output with described intercom link to each other with the loud speaker of described law-enforcing recorder, and described connecting line is provided with power amplification circuit.
Further, be provided with the power supply interface of the main switch control that is not subjected to described law-enforcing recorder on the described law-enforcing recorder for the loud speaker of described law-enforcing recorder and microphone.
Described intercom can be digital handset.
A kind of for the connecting line that connects law-enforcing recorder and intercom, described connecting line is provided with for the power amplification circuit that offers the loud speaker of described law-enforcing recorder after the output of described intercom is amplified.
Useful technique effect of the present utility model:
Connecting line at the loud speaker of the output of intercom and law-enforcing recorder arranges power amplification circuit, make law-enforcing recorder to the intercom compatibility of weak output signal, can avoid simultaneously because law-enforcing recorder volume that compatible components and parts bring and the increase of cost are set, and law-enforcing recorder is also can operate as normal when intercom that output drives signal more by force is connected.
Description of drawings
Fig. 1 is the connected system of a kind of embodiment of the utility model and the structural representation of connecting line thereof.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.Should be emphasized that following explanation only is exemplary, rather than in order to limit scope of the present utility model and application thereof.
As shown in Figure 1, in some embodiments, a kind of law-enforcing recorder and intercom connected system, comprise law-enforcing recorder 1, intercom 2 and the connecting line 3 that the output of intercom 1 is linked to each other with the loud speaker of described law-enforcing recorder 2 (or claiming loudspeaker), described connecting line 3 is provided with power amplification circuit 4.
In a preferred embodiment, be provided with the power supply interface (not shown) of the main switch control that is not subjected to described law-enforcing recorder on the described law-enforcing recorder 1 for the loud speaker of described law-enforcing recorder and microphone (or claiming miaow head).Like this, even law-enforcing recorder also can connect intercom work under off-mode, the flexibility that raising equipment uses and more energy-conservation.
As shown in Figure 1, in some embodiments, a kind of for connecting the connecting line 3 of law-enforcing recorder 1 with intercom 2, described connecting line 3 is provided with for the power amplification circuit 4 that offers the loud speaker of described law-enforcing recorder after the output of described intercom is amplified.
Below be that the digital handset of MTP850 is example with the model of MOTOROLA company.Digital handset MTP850 can't directly drive the loudspeaker of law-enforcing recorder, the connecting line that exports the loudspeaker of law-enforcing recorder at digital handset MTP850 to increases a power amplification circuit, used chip can be the power discharging IC LM4990 of National Semiconductor Corporation company, utilize the output signal of the amplification intercom of this IC, to reach the effect of the loudspeaker in the driven law-enforcing recorder.
After tested, law-enforcing recorder can connect MOTOROLA digital handset MTP850 well and carry out work, it is clear loud and clear to raise one's voice, undistorted, simultaneously because law-enforcing recorder does not need inner the transformation, intercom that also can compatible other model, for example nonnumeric intercom GP328, the PTX760 of MOTOROLA, the common intercoms in market such as TK3317, TK3178 of company of Kenwood.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.
Claims (4)
1. a law-enforcing recorder and intercom connected system comprise law-enforcing recorder, intercom and output and the connecting line that the loud speaker of described law-enforcing recorder links to each other with described intercom, and it is characterized in that described connecting line is provided with power amplification circuit.
2. connected system as claimed in claim 1 is characterized in that, is provided with the power supply interface of the main switch control that is not subjected to described law-enforcing recorder on the described law-enforcing recorder for the loud speaker of described law-enforcing recorder and microphone.
3. connected system as claimed in claim 1 or 2 is characterized in that, described intercom is digital handset.
4. a connecting line that is used for connecting law-enforcing recorder and intercom is characterized in that, described connecting line is provided with for the power amplification circuit that offers the loud speaker of described law-enforcing recorder after the output of described intercom is amplified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320097478 CN203120092U (en) | 2013-03-04 | 2013-03-04 | Connecting system of law enforcement recorder and interphone and connecting wire thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320097478 CN203120092U (en) | 2013-03-04 | 2013-03-04 | Connecting system of law enforcement recorder and interphone and connecting wire thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203120092U true CN203120092U (en) | 2013-08-07 |
Family
ID=48900402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320097478 Expired - Lifetime CN203120092U (en) | 2013-03-04 | 2013-03-04 | Connecting system of law enforcement recorder and interphone and connecting wire thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203120092U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105429664A (en) * | 2016-01-04 | 2016-03-23 | 湖南超弦科技股份有限公司 | Digital interphone |
-
2013
- 2013-03-04 CN CN 201320097478 patent/CN203120092U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105429664A (en) * | 2016-01-04 | 2016-03-23 | 湖南超弦科技股份有限公司 | Digital interphone |
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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: Binhai Road Nanshan District Guangdong street of Shenzhen city in Guangdong province 518000 software industry base in Shenzhen, 5 E block 1102 Patentee after: SHENZHEN JINGYI SMART TECHNOLOGY CO.,LTD. Address before: 518000 Research Institute of Tsinghua University, Nanshan District high tech Southern District, Guangdong, Shenzhen 401, B Patentee before: SHENZHEN JINGYI DIGITAL TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130807 |
|
| CX01 | Expiry of patent term |