CN201127082Y - CATV toll collection system monitoring module - Google Patents
CATV toll collection system monitoring module Download PDFInfo
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- CN201127082Y CN201127082Y CNU2007201262825U CN200720126282U CN201127082Y CN 201127082 Y CN201127082 Y CN 201127082Y CN U2007201262825 U CNU2007201262825 U CN U2007201262825U CN 200720126282 U CN200720126282 U CN 200720126282U CN 201127082 Y CN201127082 Y CN 201127082Y
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Abstract
The utility model relates to a monitoring module of cable television charging system, wherein the radio frequency signal is inputted from an antenna terminal of a combined electronic tuner thereof. A composite video signal output terminal is connected to a video signal input terminal of a synchronized extraction circuit on the host plate and a video signal input terminal of a video signal synthesizer. An audio signal input terminal is connected with input terminal of an audio switch circuit. The output of the video signal synthesizer is divided into two threads, with one directly outputted, and the other connected to a video signal input terminal of a radio frequency modulator. The OSD signal is connected to a input terminal of the video signal synthesizer. A controller controls the combined electronic tuner and the radio frequency modulator. The utility model is strict in circuit construction, perfect in function, reliable in performance, has compact size and great universality, and is mainly applied to cooperate with the cable television charging management system.
Description
Technical field
The utility model relates to a kind of cable television charging system monitoring module.Be mainly used in large and medium-sized hotel cable television charging system.
Background technology
Increasingly mature along with the wired TV network management technology, the tv charge management system is being applied to large and medium-sized hotel, service locations such as hotel more and more.And existing cable television charging system monitoring module volume is big, versatility is poor, the circuit structure complexity, and reliability is lower, is difficult to satisfy the requirement of cable television charging system complete-system vendor.
Summary of the invention
The technical problem that the utility model solves: design a kind of cable television charging system monitoring module, radiofrequency signal with input under the control of subscriber's main station system is converted into A/V (audio/video) signal, directly export stack OSD (screen display) back one tunnel, and another road is modulated into the radiofrequency signal output of 55.25MHz.This module can remove to control the other parts circuit according to the order of subscriber's main station, carries out signal processing and finishes function corresponding.Be mainly used in hotel's cable television charging system of supporting user.The entire circuit system works is under the 5V direct-current working volts, and control mode is I
2The C bus form.
Technical solution of the present utility model: a kind of cable television charging system monitoring module, form by combined electronic tuner, radio-frequency modulator, vision signal synthesizer, audio switch circuit and controller, combined electronic tuner antenna input connects radiofrequency signal, the VT of combined electronic tuner is divided into two-way, one the tunnel connects the video signal input terminal of synchronous head extraction circuit on the motherboard, and another road connects the video signal input terminal of vision signal synthesizer; The audio signal output end of combined electronic tuner connects the input of audio switch circuit, the output of vision signal synthesizer is divided into two-way, one the tunnel directly exports, another road connects the video signal input terminal of radio-frequency modulator, the output of audio switch circuit is divided into two-way, and one the tunnel directly exports, and another road connects the audio signal input end of radio-frequency modulator, the osd signal input of the osd signal output termination vision signal synthesizer that mainboard is drawn, the control end of controller passes through I
2The C bus connects the control end of CPU, combined electronic tuner and radio-frequency modulator on the motherboard respectively.
The combined electronic tuner is made up of frequency synthesising type electronic tuning circuit and signal processing circuit of intermediate frequency, the input termination radiofrequency signal of frequency synthesising type electronic tuning circuit, the input of output termination signal processing circuit of intermediate frequency, two outputs of signal processing circuit of intermediate frequency are respectively composite video signal output and audio signal output end.Frequency synthesising type electronic tuning circuit is made up of radio frequency input circuit, high-frequency amplifier circuit, double-tuned circuit, local oscillation circuit and mixting circuit; The input termination radiofrequency signal of radio frequency input circuit, the input of output termination high-frequency amplifier circuit, the input of the output termination double-tuned circuit of high-frequency amplifier circuit, the input of the output termination mixting circuit of double-tuned circuit, another input of the output termination mixting circuit of local oscillation circuit; Signal processing circuit of intermediate frequency is made up of filter circuit and signal processing circuit, the output of the input termination mixting circuit of filter circuit, the input of the output termination signal processing circuit of filter circuit, two outputs of signal processing circuit are respectively VT and audio signal output end.
Radio-frequency modulator is made up of audio frequency input circuit, video input circuit, rf modulation circuit and rf output circuit, the input termination audio signal of audio frequency input circuit, the audio signal input end of output termination rf modulation circuit, the input termination vision signal of video input circuit, the video signal input terminal of output termination rf modulation circuit, the input of the radiofrequency signal output termination rf output circuit of rf modulation circuit has the radiofrequency signal output on the rf output circuit.
Advantage that the utility model compared with prior art has and effect
1, highly versatile.The utility model has comprised all functions of using on wired TV network management system user end device and the set-top box, thereby it has very strong versatility.
2, volume is little.The utility model adopts modularized design, select combined electronic tuner and radio-frequency modulator for use, under the prerequisite of assurance function, accomplish the fewer but better of circuit and element, solved the problem that radiofrequency signal is disturbed easily simultaneously, improved the quality of output radiofrequency signal.Can save installing space with complete machine in supporting, reduce cost, improve properties of product.
3, the entire circuit system is vertebration, perfect in shape and function, and each functional module performance is reliable and stable, has certain versatility again, and the connection between each module is reasonable, highly versatile.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model,
Fig. 2 is the circuit block diagram of the utility model combined electronic tuner,
Fig. 3 is the circuit block diagram of the utility model radio-frequency modulator,
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment:
1,2,3,4 a kind of embodiment of the present utility model is described in conjunction with the accompanying drawings.
A kind of cable television charging system monitoring module is made up of combined electronic tuner, radio-frequency modulator, vision signal synthesizer, audio switch circuit and controller.Combined electronic tuner antenna input connects radiofrequency signal.The composite video signal output of combined electronic tuner is divided into two-way, and one tunnel synchronous head that connects on the motherboard extracts the circuit video signal input terminal, and another road connects the video signal input terminal of vision signal synthesizer; The audio signal output end of combined electronic tuner connects the input of audio switch circuit; The VT of vision signal synthesizer is divided into two-way, and one the tunnel directly exports, and another road connects the video signal input terminal of radio-frequency modulator; The output of audio switch circuit is divided into two-way, and one the tunnel directly exports, and another road connects the audio signal input end of radio-frequency modulator; The osd signal input of the osd signal output termination vision signal synthesizer that mainboard is drawn; The control end of controller passes through I
2The C bus connects the control end of CPU, combined electronic tuner and radio-frequency modulator on the motherboard respectively.
The combined electronic tuner is made up of frequency synthesising type electronic tuning circuit and signal processing circuit of intermediate frequency, the input termination radiofrequency signal of frequency synthesising type electronic tuning circuit, the input of output termination signal processing circuit of intermediate frequency, two outputs of signal processing circuit of intermediate frequency are respectively composite video signal output and audio signal output end.Frequency synthesising type electronic tuning circuit is made up of radio frequency input circuit, high-frequency amplifier circuit, double-tuned circuit, local oscillation circuit and mixting circuit; The input termination radiofrequency signal of radio frequency input circuit, the input of output termination high-frequency amplifier circuit, the input of the output termination double-tuned circuit of high-frequency amplifier circuit, an input of the output termination mixting circuit of double-tuned circuit, another input of the output termination mixting circuit of local oscillation circuit; Signal processing circuit of intermediate frequency is made up of filter circuit and signal processing circuit, the output of the input termination mixting circuit of filter circuit, the input of the output termination signal processing circuit of filter circuit, two outputs of signal processing circuit are respectively composite video signal output and audio signal output end.
Radio-frequency modulator is made up of audio frequency input circuit, video input circuit, rf modulation circuit and rf output circuit, the input termination audio signal of audio frequency input circuit, the audio signal input end of output termination rf modulation circuit, the input termination vision signal of video input circuit, the video signal input terminal of output termination rf modulation circuit, the input of the radiofrequency signal output termination rf output circuit of rf modulation circuit has the radiofrequency signal output on the rf output circuit.
Wherein the combined electronic tuner adopts the applicant to produce: TDJ-1D1WA-01.The JS-6H1/111A that also can adopt Chengdu rising sun Micron Technology Co., Ltd to produce
2The combined electronic tuner.Radio-frequency modulator adopts the applicant to produce: TSD-6A-01.The horizontal radio-frequency modulator of TSU-A that also can adopt Jiangsu Yinhe Electronics Co., Ltd. to produce.
Operation principle: (45～863MHz) are demodulated to composite video signal (Video) and audio signal (Audio) to next stage by the radiofrequency signal of combined electronic tuner (TDJ-1D1WA) antenna end input; Video signal one tunnel goes the synchronous head on the mainboard to extract circuit, and the video signal input terminal of vision signal synthesizer U1 (2264) is removed on another road, superposes the Video signal that output band OSD shows here with the Video signal with by the osd signal that mainboard is drawn.The Video signal one tunnel of OSD of having superposeed is directly exported, and another road is to the video inputs of radio-frequency modulator (TSD-6A).Be divided into two-way after the Audio signal process audio switch circuit U 4 (2264): the one tunnel directly exports, and another road is to the audio input end of radio-frequency modulator.It is PAL B/G that radio-frequency modulator is modulated into the sound accompaniment standard with sound, the vision signal of importing, and frequency is radiofrequency signal and the output of 55.25MHz.The core I C of control section is STC12C5410AD, and the mode of its employing one-way communication receives the order of subscriber's main station CPU, and the control electronic tuning unit works in different wave bands, channel and carries out the demodulation of corresponding intermediate frequency standard; The control radio-frequency modulator works in corresponding channel and sound accompaniment standard.
Control principle: the core I C of control section is single-chip microcomputer U2 (STC12C5410AD), and its external iic bus and internal IIC control bus are same group interface on hardware.On software, realize control to standard I IC devices such as combined electronic tuner, radio-frequency modulators with common parallel port Simulation with I IC serial ports.CPU works in by different time slots and receives and send two kinds of patterns when work.When receiving the IIC address signal that external bus (being sent by the CPU on the main frame) transmits, the combined electronic tuner at first carries out address response and makes this communication continue to keep.At this moment CPU carries out data sampling (CPU works in accepting state), data record and data processing to the overall process of communication.Communication changes transmit status in case finish CPU at once, will resend on the inner IIC control bus through the correct effective order after necessary processing and " translation ", realizes the control to combined electronic tuner and radio-frequency modulator.
Claims (4)
1, a kind of cable television charging system monitoring module, by the combined electronic tuner, radio-frequency modulator, the vision signal synthesizer, audio switch circuit and control circuit are formed, it is characterized in that: combined electronic tuner antenna input connects radiofrequency signal, the composite video signal output of combined electronic tuner is divided into two-way, one the tunnel connects the video signal input terminal of synchronous head extraction circuit on the motherboard, another road connects the video signal input terminal of vision signal synthesizer, the audio signal output end of combined electronic tuner connects the input of audio switch circuit, the vision signal output of vision signal synthesizer is divided into two-way, one the tunnel directly exports, another road connects the video signal input terminal of radio-frequency modulator, the output of audio switch circuit is divided into two-way, one the tunnel directly exports, another road connects the audio signal input end of radio-frequency modulator, the osd signal input of the osd signal output termination vision signal synthesizer that motherboard is drawn, the control end of control circuit passes through I
2The C bus connects the control end of CPU, combined electronic tuner and radio-frequency modulator on the motherboard respectively.
2, cable television charging system monitoring module according to claim 1, it is characterized in that: the combined electronic tuner is made up of frequency synthesising type electronic tuning circuit and signal processing circuit of intermediate frequency, the input termination radiofrequency signal of frequency synthesising type electronic tuning circuit, the input of output termination signal processing circuit of intermediate frequency, two outputs of signal processing circuit of intermediate frequency are respectively composite video signal output and audio signal output end.
3, cable television charging system monitoring module according to claim 1, it is characterized in that: radio-frequency modulator is by the audio frequency input circuit, video input circuit, rf modulation circuit and rf output circuit are formed, the input termination audio signal of audio frequency input circuit, the audio signal input end of output termination rf modulation circuit, the input termination vision signal of video input circuit, the video signal input terminal of output termination rf modulation circuit, the input of the radiofrequency signal output termination rf output circuit of rf modulation circuit has the radiofrequency signal output on the rf output circuit.
4, cable television charging system monitoring module according to claim 2 is characterized in that: frequency synthesising type electronic tuning circuit is made up of radio frequency input circuit, high-frequency amplifier circuit, double-tuned circuit, local oscillation circuit and mixting circuit; The input termination radiofrequency signal of radio frequency input circuit, the input of output termination high-frequency amplifier circuit, the input of the output termination double-tuned circuit of high-frequency amplifier circuit, an input of the output termination mixting circuit of double-tuned circuit, another input of the output termination mixting circuit of local oscillation circuit; Signal processing circuit of intermediate frequency is made up of filter circuit and signal processing circuit, the output of the input termination mixting circuit of filter circuit, the input of the output termination signal processing circuit of filter circuit, two outputs of signal processing circuit are respectively VT and audio signal output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201262825U CN201127082Y (en) | 2007-11-02 | 2007-11-02 | CATV toll collection system monitoring module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201262825U CN201127082Y (en) | 2007-11-02 | 2007-11-02 | CATV toll collection system monitoring module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201127082Y true CN201127082Y (en) | 2008-10-01 |
Family
ID=40000545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201262825U Expired - Fee Related CN201127082Y (en) | 2007-11-02 | 2007-11-02 | CATV toll collection system monitoring module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201127082Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104488283A (en) * | 2013-03-08 | 2015-04-01 | 尼尔森（美国）有限公司 | Methods and systems for reducing spillover by detecting signal distortion |
-
2007
- 2007-11-02 CN CNU2007201262825U patent/CN201127082Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104488283A (en) * | 2013-03-08 | 2015-04-01 | 尼尔森（美国）有限公司 | Methods and systems for reducing spillover by detecting signal distortion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shaanxi Lingyun Science & Technology Co., Ltd. Assignor: Linghua Electronic Co., Ltd., Shaaxi Contract record no.: 2010610000007 Denomination of utility model: CATV toll collection system monitoring module Granted publication date: 20081001 License type: Exclusive License Record date: 20100408 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081001 Termination date: 20101102 |