CN203167171U - Integrated duplex electronic tuner - Google Patents
Integrated duplex electronic tuner Download PDFInfo
- Publication number
- CN203167171U CN203167171U CN 201320156488 CN201320156488U CN203167171U CN 203167171 U CN203167171 U CN 203167171U CN 201320156488 CN201320156488 CN 201320156488 CN 201320156488 U CN201320156488 U CN 201320156488U CN 203167171 U CN203167171 U CN 203167171U
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- tuner
- output
- module
- duplexer
- duplex
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Abstract
The utility model discloses an integrated duplex electronic tuner comprising a duplexer, a tuner, a bidirectional module and an STB board. The duplexer is electrically connected with the tuner directly, and the external part of the duplexer is provided with a shell to form a duplex tuner module. The duplex tuner module, the bidirectional module and the STB board are inserted successively. The duplex tuner module is provided with antenna input and output ends which extend out of the shell, the antenna input end is connected to an external device, and the output end is connected with the bidirectional module and the STB board. According to the integrated duplex electronic tuner, since the duplexer is electrically connected with the tuner directly to form the duplex tuner module, two original high frequency connectors and one original coaxial cable which are used for connecting the duplexer with the tuner are eliminated, thus the insertion loss brought by the coaxial cable is effectively avoided, and the sensitivity of a set-top box is raised. In addition, since two high frequency connectors are reduced, the production cost of the whole set top box is reduced too.
Description
Technical field
The utility model relates to the electronic components in a kind of bi-directional set-top box, is specially a kind of integrated duplexing electronic tuning unit.
Background technology
Duplexer and the tuner accessory that has been absolutely necessary for bi-directional set-top box.Wherein duplexer is a bidirectional filter, when set-top box need possess two-way reception, sending function, puts sowing time as online, user, can be provided with duplexer in set-top box inside, separates with TV signal to realize the online signal.Also can prevent interfering with each other between the stop signal simultaneously.And tuner then is used for the signal of diplexer separates is received.When the needs reception came from the signal of antenna or cable network, tuner can carry out operations such as channel selection, frequency conversion to it.At first the channel signals that user's desire is received becomes intermediate-freuqncy signal, exports to STB(set top box set-top box) mainboard carries out demodulating and decoding, and the signal that will become image and sound and then is presented on video screen and the sound system.
In the prior art, duplexer and tuner module independently separately.Concrete structure is as follows: as shown in Figure 1, duplexer 1 is arranged on the two-way modules 3, and tuner 2 is arranged on the STB mainboard 4, and two-way modules 3 is separated setting with STB mainboard 4.In order to make tuner 2 carry out frequency-conversion processing to the signal that duplexer 1 separates, between duplexer 1 and tuner 2, be connected with a coaxial cable 6 and two high-frequency joints 5.Because can there be the insertion loss greater than 1dB in the setting of coaxial cable 6 and two high-frequency joints 5 between duplexer 1 and tuner 2, and then makes the sensitivity of existing set-top box reduce.Moreover, also can increase the production cost of whole set-top box.In addition, in the set-top box production process, owing to increased a cable assembly process, so be easy in process of production the set-top box quality of stability be impacted.
The utility model content
In view of this, the utility model provides a kind of integrated duplexing electronic tuning unit, can reduce to insert loss, guarantees the sensitivity of set-top box, can also reduce the production cost of set-top box simultaneously.
For solving above technical problem, the technical solution of the utility model is that a kind of integrated duplexing electronic tuning unit comprises duplexer, tuner, two-way modules and STB mainboard; Wherein, directly be electrically connected between duplexer and the tuner, and be provided at an outer portion with shell and form a duplexing tuner module; Duplex tuner module, two-way modules and STB mainboard are pegged graft successively; Duplex tuner module is provided with antenna input and the output that stretches out shell, and wherein antenna input is connected with external equipment; Output is connected with two-way modules and STB mainboard.
Further, described output comprises two output pins, and one is low frequency signal output, and another is tuner frequency conversion output; Wherein low frequency signal output is connected with circuit on the two-way modules, and the tuner frequency conversion is exported by board to board connector between two-way modules and STB mainboard and is connected.
Further, described tuner frequency conversion is output as intermediate-freuqncy signal output.
Further, described tuner frequency conversion is output as Low Medium Frequency or zero intermediate frequency signals output.
Further, described two-way modules is the EOC module.
Further, described two-way modules is Cable Modem module.
Compared with prior art, the utility model is owing to will directly be electrically connected the duplexing tuner module of formation between duplexer and the tuner, removed former two high-frequency joints and the coaxial cable that connects duplexer and tuner that be useful on, so avoided the insertion loss that brought by coaxial cable effectively, and then sensitivity that has improved set-top box.Owing to reduce by two high-frequency joints, also reduced the production cost of whole set-top box in addition.
Description of drawings
Fig. 1 is the syndeton schematic diagram of duplexer and tuner in the existing set-top box;
Fig. 2 is structural representation of the present utility model.
Among the figure: 1, duplexer, 2, tuner, 3, two-way modules, 4, the STB mainboard, 5, high-frequency joint, 6, coaxial cable, 7, duplexing tuner module, 8, antenna input.
Embodiment
In order to make those skilled in the art understand the technical solution of the utility model better, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 2, a kind of integrated duplexing electronic tuning unit comprises being provided with shell duplex tuner module 7, two-way modules 3 and STB mainboard 4.Duplex tuner module 7, two-way modules 3 and STB mainboard 4 are pegged graft successively.Wherein, duplexing tuner module 7 directly is electrically connected with tuner by duplexer and forms.Duplex tuner module 7 is provided with antenna input 8 and the output that stretches out shell.Wherein, antenna input 8 is connected with external equipment; Output is connected with two-way modules 3 and STB mainboard 4.
Said structure is the main project organization of the utility model.Form owing to directly be electrically connected between duplexer and the tuner, removed former two high-frequency joints and the coaxial cable that connects duplexer and tuner that be useful on, so avoided the insertion loss that brought by coaxial cable effectively, and then sensitivity that has improved set-top box.Owing to reduce by two high-frequency joints, also reduced the production cost of whole set-top box in addition.
In the utility model, the output that tuner connects comprises two output pins, and one of them is low frequency signal output, and another is tuner frequency conversion output, and this tuner frequency conversion is output as intermediate frequency or Low Medium Frequency or zero intermediate frequency signals output.Both with concrete connected mode between two-way modules 3 and the STB mainboard 4 are: low frequency signal output is connected with circuit on the two-way modules 3, and the tuner frequency conversion is exported and then passed through 4 board to board connectors of two-way modules 3 and STB mainboard and be connected.
Two-way modules is ethernet coaxial cable transport module (EOC) or cable modem (Cable Modem) in the utility model.
The course of work of the present utility model is: signal enters duplexing tuner module 7 by antenna input 8, and the duplexer tuner module will form online or the TV signal of intermediate frequency or low frequency by separating frequency conversion.Signal through the frequency conversion gained is sent to two-way modules 3 by low frequency signal output and tuner frequency conversion output, by two-way modules 3 signal is passed on the STB mainboard 4 again, finally by STB mainboard 4 it is sent into conciliation electrical equipment.Realize that with this watching of TV coach function of surfing the Net.
Only be preferred implementation of the present utility model below, should be pointed out that above-mentioned preferred implementation should not be considered as restriction of the present utility model, protection range of the present utility model should be as the criterion with claim institute restricted portion.For those skilled in the art, in not breaking away from spirit and scope of the present utility model, can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (6)
1. an integrated duplexing electronic tuning unit comprises duplexer, tuner, two-way modules and STB mainboard; It is characterized in that: directly be electrically connected between described duplexer and the tuner, and be provided at an outer portion with shell and form a duplexing tuner module; Duplex tuner module, two-way modules and STB mainboard are pegged graft successively; Duplex tuner module is provided with antenna input and the output that stretches out shell, and wherein antenna input is connected with external equipment; Output is connected with two-way modules and STB mainboard.
2. integrated duplexing electronic tuning unit as claimed in claim 1, it is characterized in that: described output comprises two output pins, and one is low frequency signal output, and another is tuner frequency conversion output; Wherein low frequency signal output is connected with circuit on the two-way modules, and the tuner frequency conversion is exported by board to board connector between two-way modules and STB mainboard and is connected.
3. integrated duplexing electronic tuning unit as claimed in claim 2 is characterized in that: described tuner frequency conversion is output as intermediate-freuqncy signal output.
4. integrated duplexing electronic tuning unit as claimed in claim 2 is characterized in that: described tuner frequency conversion is output as Low Medium Frequency or zero intermediate frequency signals output.
5. integrated duplexing electronic tuning unit as claimed in claim 1, it is characterized in that: described two-way modules is the EOC module.
6. integrated duplexing electronic tuning unit as claimed in claim 1, it is characterized in that: described two-way modules is Cable Modem module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320156488 CN203167171U (en) | 2013-04-01 | 2013-04-01 | Integrated duplex electronic tuner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320156488 CN203167171U (en) | 2013-04-01 | 2013-04-01 | Integrated duplex electronic tuner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203167171U true CN203167171U (en) | 2013-08-28 |
Family
ID=49028322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320156488 Expired - Fee Related CN203167171U (en) | 2013-04-01 | 2013-04-01 | Integrated duplex electronic tuner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203167171U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103607548A (en) * | 2013-11-13 | 2014-02-26 | 四川福润得数码科技有限责任公司 | AV modulation output-tuning receiving integrated module group |
| CN106257927A (en) * | 2015-06-24 | 2016-12-28 | 上海未来宽带技术股份有限公司 | Tuner |
-
2013
- 2013-04-01 CN CN 201320156488 patent/CN203167171U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103607548A (en) * | 2013-11-13 | 2014-02-26 | 四川福润得数码科技有限责任公司 | AV modulation output-tuning receiving integrated module group |
| CN106257927A (en) * | 2015-06-24 | 2016-12-28 | 上海未来宽带技术股份有限公司 | Tuner |
| CN106257927B (en) * | 2015-06-24 | 2019-11-08 | 上海未来宽带技术股份有限公司 | Tuner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20210401 |