CN101873382A - Mobile phone, and method and device for dynamically tuning television internal antenna thereof - Google Patents
Mobile phone, and method and device for dynamically tuning television internal antenna thereof Download PDFInfo
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- CN101873382A CN101873382A CN201010213818.3A CN201010213818A CN101873382A CN 101873382 A CN101873382 A CN 101873382A CN 201010213818 A CN201010213818 A CN 201010213818A CN 101873382 A CN101873382 A CN 101873382A
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Abstract
The invention relates to a mobile phone, and a method and a device for dynamically tuning a television internal antenna thereof. The method for dynamically tuning the television internal antenna of the mobile phone comprises the following steps that: a mobile phone baseband circuit receives a frequency band selection signal and a frequency channel selection signal, controls a television receiving chip to be tuned to the selected frequency band and frequency channel, connects the internal antenna to a corresponding tuning network of a plurality of tuning networks in an electronic tuning circuit through the frequency band selection switch based on the selected frequency band so as to set the electronic tuning circuit in the selected frequency band, and regulates the electronic tuning circuit based on the selected frequency channel to make the electronic tuning circuit reach the tuning point of the selected frequency channel. In the invention, an optimal receiving frequency point can be dynamically changed to be synchronous with a television channel to be watched so as to realize the dynamical tuning matching with an optimal sensitivity and improve the receiving sensitivity of an antenna system. Moreover, the invention has the advantages of stable performance, low cost and small volume.
Description
Technical field
The present invention relates to communication equipment, more particularly, relate to a kind of dynamically tuning television internal antenna method and device that is built in the television receiver in the portable communication device.
Background technology
Along with the development of communication network and professional continuous expansion, mobile communication terminal device for example mobile phone has become the necessity of people's routine work, life.The user is also more and more to the functional requirement of mobile phone, and for example many users wish mobile phone configuration TV functions, watch its programs of interest between making things convenient at one's leisure.Mobile-phone manufacturers develop the mobile phone that has TV functions thus.At present the antenna of mobile TV can be divided into built-in and two kinds of external antennas.
The receive frequency range of mobile TV is from 150MHz-870MHz, and in order normally to receive wide band signal, the antenna of mobile TV must have the corresponding work bandwidth.
In order to obtain very wide bandwidth of operation, existing mobile TV antenna great majority have all adopted the form of telescopic antenna, adjust the working band of antenna in work by the mode of artificial adjustment antenna length.This mode has following shortcoming: 1, and size is bigger, and in order to reach enough bandwidth, length can surpass 30cm when antenna was all pulled out, and was inconvenient to carry.2, can't make built-in aerial, influence product appearance.3, owing to the contact of staff, influence tuning precision during manual tuning.
Built-in aerial adopts pcb board to make, and advantage is that volume is little, and is easy to use, so the mobile TV built-in aerial has become a kind of trend.The part but it also comes with some shortcomings, for example receiving sensitivity is low, and the beamwidth of antenna is narrow, high directivity.
Because after making built-in aerial, contraction in length can cause receiving sensitivity to descend, the beamwidth of antenna narrows down.Generally speaking, in the free transmission range of 150MHz-870MHz, be illustrated in figure 1 as the band diagram of the television internal antenna of prior art, among the figure as can be seen the frequency band of this antenna can only cover very narrow zone.It is the highest promptly having only the receiving sensitivity of a Frequency point (fixing), and other Frequency points are all low than this Frequency point.And fall lowly more by the passband edge receiving sensitivity more.Therefore, under the different frequency that causes after existing built-in aerial technology exists the built-in aerial bandwidth to narrow down, the problem that receiving sensitivity is different.
Summary of the invention
The technical problem to be solved in the present invention is, fixes at the mobile TV built-in aerial optimum reception Frequency point of prior art, and the different defective of receiving sensitivity under the different frequency provides a kind of mobile TV built-in aerial dynamic tuning method.
Another technical problem that the present invention will solve is, fixes at the mobile TV built-in aerial optimum reception Frequency point of prior art, and the different defective of receiving sensitivity under the different frequency provides a kind of mobile TV built-in aerial dynamic tuning device.
The another technical problem that the present invention will solve is, mobile TV built-in aerial optimum reception Frequency point at prior art is fixed, the different defective of receiving sensitivity under the different frequency provides a kind of mobile phone that disposes mobile TV built-in aerial dynamic tuning device.
The technical solution adopted for the present invention to solve the technical problems is: a kind of mobile TV built-in aerial dynamic tuning method is provided, comprises:
The mobile phone baseband circuit receives Frequency Band Selection signal and channel selecting signal;
Mobile phone baseband circuit control television reception chip be tuned to selected frequency range and channel;
Also comprise:
The mobile phone baseband circuit is connected in electronic tuning circuit a corresponding tuning network in a plurality of tuning networks by the Frequency Band Selection switch with described built-in aerial based on selected frequency range, so that described electronic tuning circuit is arranged on selected frequency range;
The mobile phone baseband circuit is adjusted corresponding tuning network based on selected channel, so that the electronic tuning circuit arrives the tuning point of selected channel.
In mobile TV built-in aerial dynamic tuning method of the present invention, described television reception chip is sent to described mobile phone baseband circuit with the strength information of the TV signal that receives;
Described mobile phone baseband circuit is finely tuned corresponding tuning network based on the strength information of received TV signal.
In mobile TV built-in aerial dynamic tuning method of the present invention, the mobile phone baseband circuit is adjusted the electronic tuning circuit based on selected channel and comprised: the mobile phone baseband processor is based on the output voltage of selected channel setting and control digital to analog converter, in order to the variable capacitance diode in the tuning network is finely tuned.
In mobile TV built-in aerial dynamic tuning method of the present invention, described mobile phone baseband circuit comprises based on the output voltage of selected channel setting and control digital to analog converter: search the digital to analog converter output voltage of corresponding selected channel based on frequency-voltage relationship table, perhaps based on the digital to analog converter output voltage of the corresponding selected channel of frequency-voltage relationship algorithm computation.
The present invention solves another technical scheme that its technical problem adopts: construct a kind of mobile TV built-in aerial dynamic tuning device, it is characterized in that, comprise the mobile phone baseband circuit, reach the electronic tuning circuit that links to each other with described mobile phone baseband circuit with the mobile TV built-in aerial, the output of described electronic tuning circuit is coupled to the television reception chip in the mobile phone; Wherein, described electronic tuning circuit comprises Frequency Band Selection switch and a plurality of tuning network, and described Frequency Band Selection switch links to each other with described mobile phone baseband circuit respectively with described tuning network; Wherein, described mobile phone baseband circuit comprises:
The Frequency Band Selection signal receiving module;
The channel selecting signal receiver module;
Television reception chip frequency range is provided with control module, is used for adjusting to selected frequency range based on the Frequency Band Selection signal controlling television reception chip that is received;
The television reception chip channel is provided with control module, be used for based on the channel selecting signal that received control television reception chip be tuned to selected channel;
The Frequency Band Selection switch control module, be used for described built-in aerial being connected to a corresponding tuning network of described a plurality of tuning networks, so that described electronic tuning circuit is arranged on selected frequency range based on the described Frequency Band Selection switch of the Frequency Band Selection signal controlling that is received;
The tuning network control module is used for based on the channel selecting signal that is received corresponding tuning network being adjusted, so that the electronic tuning circuit arrives the tuning point of selected channel.
In mobile TV built-in aerial dynamic tuning device of the present invention, described mobile phone baseband circuit also comprises:
The TV signal intensity information receiving module is used to receive the TV signal intensity information from the television reception chip:
The fine setting module is used for based on the TV signal intensity information that receives corresponding tuning network being finely tuned.
In mobile TV built-in aerial dynamic tuning device of the present invention, described electronic tuning circuit comprises digital to analog converter, in described a plurality of tuning network each all comprises variable capacitance diode, and the output of the described digital to analog converter of negative pole of described variable capacitance diode links to each other; The input of described digital to analog converter links to each other with described mobile phone baseband processor.
The present invention solves the another technical scheme that its technical problem adopts: construct a kind of mobile phone, it is characterized in that, comprise mobile phone baseband circuit and coupled television reception chip, the mobile TV built-in aerial, and be connected electronic tuning circuit between described mobile TV built-in aerial and the described television reception chip; Described electronic tuning circuit comprises Frequency Band Selection switch and a plurality of tuning network; Described Frequency Band Selection switch links to each other with described mobile phone baseband circuit respectively with described tuning network; Wherein, described mobile phone baseband processor comprises:
The Frequency Band Selection signal receiving module;
The channel selecting signal receiver module;
Television reception chip frequency range is provided with control module, is used for adjusting to selected frequency range based on the Frequency Band Selection signal controlling television reception chip that is received;
The television reception chip channel is provided with control module, be used for based on the channel selecting signal that received control television reception chip be tuned to selected channel;
The Frequency Band Selection switch control module, be used for described built-in aerial being connected to a corresponding tuning network of described a plurality of tuning networks, so that described electronic tuning circuit is arranged on selected frequency range based on the described Frequency Band Selection switch of the Frequency Band Selection signal controlling that is received;
The tuning network control module is used for based on the channel selecting signal that is received corresponding tuning network being adjusted, so that the electronic tuning circuit arrives the tuning point of selected channel.
In mobile phone of the present invention, described mobile phone baseband circuit also comprises:
The TV signal intensity information receiving module is used to receive the TV signal intensity information from the television reception chip;
The fine setting module is used for based on the TV signal intensity information that receives corresponding tuning network being finely tuned.
In mobile phone of the present invention, described electronic tuning circuit comprises digital to analog converter, and each in described a plurality of tuning networks all comprises variable capacitance diode, and the negative pole of described variable capacitance diode links to each other with the output of described digital to analog converter; The input of described digital to analog converter links to each other with described mobile phone baseband processor.
Implement the present invention, have following beneficial effect: the present invention controls the electronic tuning circuit by the mobile phone baseband processor, can dynamically change the optimum reception Frequency point, make itself and the current television channel that will watch synchronous, to realize optimum sensitivity dynamic tuning coupling.Thereby solved the problem that the beamwidth of antenna narrows down, further improved the receiving sensitivity of antenna system.
In addition, owing to adopt software and hardware combining to realize mobile TV built-in aerial dynamic tuning device of the present invention, make this device have stable performance, cost is low, volume is little advantage.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the band diagram of the mobile TV built-in aerial of prior art;
Fig. 2 is the structural representation of embedded in mobile phone television receiver according to an embodiment of the invention;
Fig. 3 is the module map according to the mobile phone baseband circuit in the mobile phone of the present invention;
Fig. 4 is the schematic diagram of the electronic tuning circuit in the embedded in mobile phone television receiver according to an embodiment of the invention;
Fig. 5 is the flow chart according to mobile TV built-in aerial dynamic tuning method of the present invention;
Fig. 6 is the flow chart of the course of work of embedded in mobile phone television receiver according to an embodiment of the invention;
Fig. 7 is the band diagram according to mobile TV built-in aerial of the present invention.
Embodiment
The present invention conceives a kind of electronic tuning technical scheme, utilizes technical scheme of the present invention can abandon large-sized telescopic antenna and use less built-in aerial and guarantee its receptivity.
Fig. 2 is the structural representation of embedded in mobile phone television receiver according to an embodiment of the invention.As shown in Figure 2, the embedded in mobile phone television receiver comprises mobile TV built-in aerial 6, electronic tuning circuit 1, television reception chip 2 and mobile phone baseband circuit 3.Wherein, electronic tuning circuit 1 comprises Frequency Band Selection switch 11, tuning network 12a-12c, low noise amplifier 13a-3c and digital to analog converter (DAC) 14.Mobile TV built-in aerial 6 is connected in Frequency Band Selection switch 11.The output of Frequency Band Selection switch 11 links to each other with the 3rd tuning network 12c with the first tuning network 12a, the second tuning network 12b respectively, in order to built-in aerial is connected to and selected TV band and the corresponding tuning network of channel.The first tuning network 12a, the second tuning network 12b and the 3rd tuning network 12c are connected to television reception chip 2 by low noise amplifier 13a-13c respectively.
In the present embodiment, each among the tuning network 12a-12c all comprises a variable capacitance diode, and the negative pole of variable capacitance diode links to each other with the output of digital to analog converter 14.By changing the output voltage of digital to analog converter, can change the electric capacity of variable capacitance diode, thereby make the electronic tuning circuit arrive the tuning point of selected channel.For realizing frequency range setting and channel tuning, mobile phone baseband circuit 3 has an I/O port to be connected to Frequency Band Selection switch 11, is used to export the Frequency Band Selection signal; Mobile phone baseband circuit 3 also has an I/O port to be connected to DAC 14, is used to receive from the data of mobile phone baseband circuit 3 and converts aanalogvoltage to, thereby generate output control voltage.In addition, mobile phone baseband circuit 3 has an I/O port to be used for transmitting control signal to television reception chip 2, with control television reception chip 2 be tuned to selected frequency range and channel.As selection, mobile phone baseband circuit 3 has an IO port to be used for from the signal strength signal intensity report of television reception chip 2 receptions about TV signal intensity information.
In the present embodiment, in order to reduce the difficulty that circuit is realized, it is tuning that whole frequency band is divided into three sections difference, and three tuning networks link to each other with built-in aerial 6 by Frequency Band Selection switch (for example can select the HF switch of SP3T) 11.Include variable capacitance diode in the tuning network, can change its capacitance, thereby change the match parameter of network, realize the conversion of input impedance according to applied voltage.The input control signal of electronic tuning circuit has two, and one is the Frequency Band Selection signal, and in this signal deciding built-in aerial and three networks which links to each other, and this signal is provided by the mobile phone baseband circuit.Another control signal is a tuning voltage, and this signal is provided by the DAC analog to digital converter.In the present embodiment, can be in the memory (for example nonvolatile storage FLASH) of mobile phone the frequency-voltage relationship table or the frequency-voltage relationship algorithm of store electrons tuning circuit, when needing received television signal, mobile phone baseband circuit 3, specifically, be that wherein tuning network control module 34 is called this frequency-voltage relationship table or frequency-voltage relationship algorithm, search the output voltage of corresponding digital to analog converter based on selected channel, perhaps calculate the output voltage of corresponding digital to analog converter, and the output of control digital to analog converter.The principle of electronic tuning circuit as shown in Figure 4.
In the present embodiment, tuning voltage is a continuous variable, can obtain very high tuning precision.Scheme in another embodiment, can cancel digital to analog converter (DAC), and use several fixed voltages to realize segmented tuning, but tuning precision can be lower as an alternative.
In addition, also can use other tuning methods: for example, utilize plurality of fixed electric capacity, select, reach tuning purpose by switch; Perhaps, utilize several groups of fixed partial pressure, tunable varactor diode reaches tuning purpose.Before a kind of be the fixed capacity method, can save varactor and DAC; The back is a kind of to be the fixed resistance method, can save DAC.But these two kinds of methods all belong to discontinuous tuning, and precision is on the low side.
These two kinds of methods all need the mobile phone baseband processor to participate in, and need software to realize.In concrete enforcement, the fixed capacity method utilizes several fixed capacities to substitute variable capacitance diode, and selects different electric capacity (according to current frequency) by a variable connector, reaches tuning purpose.In this scheme, the mobile phone baseband processor draws to need which electric capacity of connection by algorithm or lookup table mode, and outputs control signals to variable connector based on selected channel, makes it be connected to needed that electric capacity.
The fixed resistance method utilizes a variable connector and several fixed resistance to constitute network, replaces the DAC chip, according to current frequency, mates different resistance, produces correspondent voltage value, de-tuned variable capacitance diode after the dividing potential drop.In this scheme, the mobile phone baseband processor draws the great resistance of needs coupling by algorithm or lookup table mode, and outputs control signals to variable connector based on selected channel, makes it be connected to needed build-out resistor.
Fig. 3 is that mobile phone baseband circuit 3 includes microprocessor according to the module map of the mobile phone baseband circuit 3 in the mobile phone of the present invention, can control electronic tuning circuit 1 and television reception chip 2.As shown in Figure 3, mobile phone baseband circuit 3 comprises Frequency Band Selection signal receiving module 31; Channel selecting signal receiver module 32; Television reception chip frequency range is provided with control module 38, is used for adjusting to selected frequency range based on the Frequency Band Selection signal controlling television reception chip that is received; The television reception chip channel is provided with control module 33, be used for based on the channel selecting signal that received control television reception chip be tuned to selected channel; Frequency Band Selection switch control module 37 is used for based on the Frequency Band Selection signal controlling Frequency Band Selection switch that is received built-in aerial being connected to a corresponding tuning network of a plurality of tuning networks, so that the electronic tuning circuit is arranged on selected frequency range; Tuning network control module 34 is used for based on the channel selecting signal that is received corresponding tuning network being adjusted, so that the electronic tuning circuit arrives the tuning point of selected channel.Also comprise: TV signal intensity information receiving module 35 is used to receive the TV signal intensity information from the television reception chip; Fine setting module 36 is used for based on the TV signal intensity information that receives the electronic tuning circuit being finely tuned.Among Fig. 3, TV signal intensity information receiving module 35 and fine setting module 36 adopt frame of broken lines, represent that these two assemblies are options, in other embodiments, also can not comprise these two assemblies.
With respect to previous embodiment, each among the tuning network 12a-12c all comprises a variable capacitance diode, and the negative pole of variable capacitance diode links to each other with the output of digital to analog converter (DAC) 14.Frequency Band Selection switch 11 and DAC 14 receive the Frequency Band Selection signal and the control voltage signal of the output of Frequency Band Selection switch control module 37 and tuning network control module 34 respectively.
Fig. 4 is the schematic diagram of the electronic tuning circuit in the embedded in mobile phone television receiver according to an embodiment of the invention.As shown in Figure 4, antenna links to each other with three tuning networks by Frequency Band Selection switch U1.In the present embodiment, what the Frequency Band Selection switch adopted is the HF switch of SP3T, and it has three output RX3, RX2 and RX1, is connected to the 3rd tuning network, first tuning network and second tuning network respectively; Its input V1, V2 and V3 (pin one, 12 and 4) are connected in the mobile phone baseband circuit, are used to receive the Frequency Band Selection signal.As selection, the Frequency Band Selection switch can also adopt and comprise one of a plurality of band pass filters and advance to have more the frequency-selecting module and realize.
First tuning network is used for the VHF1 frequency range, and as shown in Figure 4, it comprises the second variable capacitance diode D2, second capacitor C 2, the 3rd capacitor C 3, first resistance R 1, the 3rd inductance L 3, the 4th inductance L 4 and the 5th inductance L 5.Wherein, the positive pole of the second variable capacitance diode D2 links to each other with the RX2 end (pin 5) of the HF switch U1 of SP3T by second capacitor C 2, and the negative pole of the second variable capacitance diode D2 links to each other with the input of television reception chip by the 3rd capacitor C 3; The RX2 that the 3rd inductance L 3 is connected the HF switch U1 of SP3T holds between the input of (pin 5) and television reception chip; The 4th inductance L 4 is connected between the node and ground of second capacitor C 2 and the second variable capacitance diode D2; The 5th inductance L 5 is connected between the node and ground of the 3rd capacitor C 3 and the 3rd inductance L 3; In addition, the negative pole of the second variable capacitance diode D2 also is connected to the output of DAC by first resistance R 1.
Second tuning network is used for the VHF2 frequency range, and as shown in Figure 4, it comprises the 3rd variable capacitance diode D3, the 3rd resistance R 3 and the 6th inductance L 6.Wherein, the plus earth of the 3rd variable capacitance diode D3; The negative pole of the 3rd variable capacitance diode D3 is connected in the RX1 end (pin 8) of the HF switch U1 of SP3T by the 6th inductance L 6, and is connected to the output of DAC by the 3rd resistance R 3, also is connected in the input of television reception chip.
The 3rd tuning network is used for uhf band, and as shown in Figure 4, it comprises the first variable capacitance diode D1, first capacitor C 1, the 4th capacitor C 4, second resistance R 2, first inductance L 1, second inductance L 2 and the 7th inductance L 7.Wherein, the positive pole of the first variable capacitance diode D1 links to each other with the RX3 end (pin two) of the HF switch U1 of SP3T by first capacitor C 1, and the negative pole of the first variable capacitance diode D2 links to each other with the input of television reception chip by the 4th capacitor C 4; The RX3 that first inductance L 1 is connected the HF switch U1 of SP3T holds between the input of (pin two) and television reception chip; Second inductance L 2 is connected between the node and ground of first capacitor C 1 and the first variable capacitance diode D1; The 7th inductance L 7 is connected between the node and ground of the 4th capacitor C 4 and first inductance L 1; In addition, the negative pole of the first variable capacitance diode D1 also is connected to the output of DAC by second resistance R 2.
In addition, need to prove that signal before entering the television reception chip, can amplify by low noise amplifier (13a-13c as shown in Figure 2) earlier after tuning network output.In addition, though the present invention is that example is described with three tuning networks, the invention is not restricted to this.The present invention also can comprise two tuning networks, or four, five or more a plurality of tuning network, to receive the program of different frequency range.
Fig. 5 is the flow chart according to mobile TV built-in aerial dynamic tuning method of the present invention.As shown in Figure 5, after beginning step 510, carry out step 520, the mobile phone baseband circuit receives Frequency Band Selection signal and channel selecting signal.In step 530, mobile phone baseband circuit control television reception chip be tuned to selected frequency range and channel.In step 540, the mobile phone baseband circuit is connected in electronic tuning circuit a corresponding tuning network in a plurality of tuning networks by the Frequency Band Selection switch with described built-in aerial based on selected frequency range, so that described electronic tuning circuit is arranged on selected frequency range.In step 550, the mobile phone baseband circuit is adjusted corresponding tuning network based on selected channel, so that the electronic tuning circuit arrives the tuning point of selected channel.Afterwards, in step 560, the television reception chip is sent to described mobile phone baseband circuit with the strength information of the TV signal that receives.In step 570, the mobile phone baseband circuit is finely tuned corresponding tuning network based on the strength information of received TV signal.Step 580, tuning process finishes.
Among Fig. 5, step 560 and step 570 are optional steps, in certain embodiments, can save this two steps, do not finely tune.In addition, in further embodiments, can also repeat step 550 and 560, TV signal intensity be monitored in real time, and in view of the above variable capacitance diode is finely tuned.
Fig. 6 is the flow chart of the course of work of embedded in mobile phone television receiver according to an embodiment of the invention, and it comprises variable capacitance diode corresponding to tuning network, the embodiment of the capacitance by DAC control variable capacitance diode.As shown in Figure 6, in step 610, start the embedded in mobile phone television receiver, for example after the instruction that receives the user.In step 620, the television reception chip is carried out initialization process.In step 630, after frequency range that receives the user and channel selection instruction, the mobile phone baseband circuit is set to required frequency range of user and channel with the television reception chip.In step 640, the electronic tuning circuit is set to working frequency range (being selected frequency range).In step 650, the mobile phone baseband circuit is based on the frequency of the channel that will receive and the frequency-voltage relationship of electronic tuning circuit, DAC output voltage (for example by table look-up or calculate) is set, and utilizes DAC to remove to drive variable capacitance diode to make the electronic tuning circuit arrive this channel resonance point.In step 660, the mobile phone baseband circuit receives the TV signal intensity report from the television reception chip.Afterwards, in step 670, whether mobile phone baseband circuit judges TV signal intensity meets the requirements.In this way, then return step 660, continue the monitoring TV signal strength signal intensity.As not, return and carry out step 680, the output voltage of DAC is finely tuned.After the step 680, return 660 again, continue the monitoring TV signal strength signal intensity.Step 660 is carried out repeatedly to 680, so that TV signal intensity is monitored in real time and adjusted, up to closing the embedded in mobile phone television receiver.
Fig. 7 is the band diagram according to mobile TV built-in aerial of the present invention.It shows behind dynamic tuning, and the working band of narrow band antenna can dynamically change, thereby reaches the purpose that broadband covers.
The present invention proposes the method for built-in aerial+electronic tuning, realized the miniaturization of Mobile phone television antenna. Compared to existing technology, have following advantage:
1, realized antenna miniaturization, by the dynamic electron tunable technology, can make the working band dynamic change of the built-in aerial of narrow-band, thereby satisfy wide band performance requirement that this is just so that the use of built-in aerial becomes possibility.
2, use small size antenna, just can be placed into interior of mobile phone to antenna, make the design of product appearance more flexible, profile is more attractive in appearance.
3, the electronic tuning technology is higher than the manual tuning technology acuracy of telescopic antenna.
4, utilize this technology can use the built-in aerial of arrowband to replace bulky telescopic antenna, be conducive to reduce the volume of product, improve portable.
Claims (10)
1. mobile TV built-in aerial dynamic tuning method comprises:
The mobile phone baseband circuit receives Frequency Band Selection signal and channel selecting signal;
Mobile phone baseband circuit control television reception chip be tuned to selected frequency range and channel;
It is characterized in that, also comprise:
The mobile phone baseband circuit is connected in electronic tuning circuit a corresponding tuning network in a plurality of tuning networks by the Frequency Band Selection switch with described built-in aerial based on selected frequency range, so that described electronic tuning circuit is arranged on selected frequency range;
The mobile phone baseband circuit is adjusted corresponding tuning network based on selected channel, so that the electronic tuning circuit arrives the tuning point of selected channel.
2. mobile TV built-in aerial dynamic tuning method according to claim 1 is characterized in that, described television reception chip is sent to described mobile phone baseband circuit with the strength information of the TV signal that receives;
Described mobile phone baseband circuit is finely tuned corresponding tuning network based on the strength information of received TV signal.
3. mobile TV built-in aerial dynamic tuning method according to claim 1 and 2, it is characterized in that, the mobile phone baseband circuit is adjusted the electronic tuning circuit based on selected channel and comprised: the mobile phone baseband processor is based on the output voltage of selected channel setting and control digital to analog converter, in order to the variable capacitance diode in the tuning network is finely tuned.
4. mobile TV built-in aerial dynamic tuning method according to claim 3, it is characterized in that, described mobile phone baseband circuit comprises based on the output voltage of selected channel setting and control digital to analog converter: search the digital to analog converter output voltage of corresponding selected channel based on frequency-voltage relationship table, perhaps based on the digital to analog converter output voltage of the corresponding selected channel of frequency-voltage relationship algorithm computation.
5. mobile TV built-in aerial dynamic tuning device, it is characterized in that, comprise the mobile phone baseband circuit, reach the electronic tuning circuit that links to each other with described mobile phone baseband circuit with the mobile TV built-in aerial, the output of described electronic tuning circuit is coupled to the television reception chip in the mobile phone; Wherein, described electronic tuning circuit comprises Frequency Band Selection switch and a plurality of tuning network, and described Frequency Band Selection switch links to each other with described mobile phone baseband circuit respectively with described tuning network; Wherein, described mobile phone baseband circuit comprises:
The Frequency Band Selection signal receiving module;
The channel selecting signal receiver module;
Television reception chip frequency range is provided with control module, is used for adjusting to selected frequency range based on the Frequency Band Selection signal controlling television reception chip that is received;
The television reception chip channel is provided with control module, be used for based on the channel selecting signal that received control television reception chip be tuned to selected channel;
The Frequency Band Selection switch control module, be used for described built-in aerial being connected to a corresponding tuning network of described a plurality of tuning networks, so that described electronic tuning circuit is arranged on selected frequency range based on the described Frequency Band Selection switch of the Frequency Band Selection signal controlling that is received;
The tuning network control module is used for based on the channel selecting signal that is received corresponding tuning network being adjusted, so that the electronic tuning circuit arrives the tuning point of selected channel.
6. mobile TV built-in aerial dynamic tuning device according to claim 5 is characterized in that described mobile phone baseband circuit also comprises:
The TV signal intensity information receiving module is used to receive the TV signal intensity information from the television reception chip;
The fine setting module is used for based on the TV signal intensity information that receives corresponding tuning network being finely tuned.
7. according to claim 5 or 6 described mobile TV built-in aerial dynamic tuning devices, it is characterized in that, described electronic tuning circuit comprises digital to analog converter, in described a plurality of tuning network each all comprises variable capacitance diode, and the output of the described digital to analog converter of negative pole of described variable capacitance diode links to each other; The input of described digital to analog converter links to each other with described mobile phone baseband processor.
8. a mobile phone is characterized in that, comprises mobile phone baseband circuit and coupled television reception chip, the mobile TV built-in aerial, and be connected electronic tuning circuit between described mobile TV built-in aerial and the described television reception chip; Described electronic tuning circuit comprises Frequency Band Selection switch and a plurality of tuning network; Described Frequency Band Selection switch links to each other with described mobile phone baseband circuit respectively with described tuning network; Wherein, described mobile phone baseband processor comprises:
The Frequency Band Selection signal receiving module;
The channel selecting signal receiver module;
Television reception chip frequency range is provided with control module, is used for adjusting to selected frequency range based on the Frequency Band Selection signal controlling television reception chip that is received;
The television reception chip channel is provided with control module, be used for based on the channel selecting signal that received control television reception chip be tuned to selected channel;
The Frequency Band Selection switch control module, be used for described built-in aerial being connected to a corresponding tuning network of described a plurality of tuning networks, so that described electronic tuning circuit is arranged on selected frequency range based on the described Frequency Band Selection switch of the Frequency Band Selection signal controlling that is received;
The tuning network control module is used for based on the channel selecting signal that is received corresponding tuning network being adjusted, so that the electronic tuning circuit arrives the tuning point of selected channel.
9. mobile phone according to claim 8 is characterized in that, described mobile phone baseband circuit also comprises:
The TV signal intensity information receiving module is used to receive the TV signal intensity information from the television reception chip;
The fine setting module is used for based on the TV signal intensity information that receives corresponding tuning network being finely tuned.
10. according to Claim 8 or 9 described mobile phones, it is characterized in that, described electronic tuning circuit comprises digital to analog converter, and each in described a plurality of tuning networks all comprises variable capacitance diode, and the negative pole of described variable capacitance diode links to each other with the output of described digital to analog converter; The input of described digital to analog converter links to each other with described mobile phone baseband processor.
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| CN201010213818.3A CN101873382B (en) | 2010-06-30 | 2010-06-30 | Mobile phone, and method and device for dynamically tuning television internal antenna thereof |
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| CN201010213818.3A CN101873382B (en) | 2010-06-30 | 2010-06-30 | Mobile phone, and method and device for dynamically tuning television internal antenna thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012122750A1 (en) * | 2011-03-14 | 2012-09-20 | 中兴通讯股份有限公司 | Dual mode mobile terminal |
| CN102695012A (en) * | 2012-06-20 | 2012-09-26 | 青岛海信移动通信技术股份有限公司 | Method for improving signal receiving performance of mobile television and mobile terminal |
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| US9185746B2 (en) | 2011-03-14 | 2015-11-10 | Zte Corporation | Dual-mode mobile terminal |
| WO2012122750A1 (en) * | 2011-03-14 | 2012-09-20 | 中兴通讯股份有限公司 | Dual mode mobile terminal |
| CN102695012A (en) * | 2012-06-20 | 2012-09-26 | 青岛海信移动通信技术股份有限公司 | Method for improving signal receiving performance of mobile television and mobile terminal |
| CN104078752B (en) * | 2014-06-23 | 2017-05-03 | 芜湖航飞科技股份有限公司 | Vehicle-mounted short-wave communication antenna |
| CN104078752A (en) * | 2014-06-23 | 2014-10-01 | 芜湖航飞科技股份有限公司 | Vehicle-mounted short-wave communication antenna |
| CN105633553A (en) * | 2015-12-25 | 2016-06-01 | 宇龙计算机通信科技(深圳)有限公司 | Antenna system, mobile terminal and antenna tuning control system |
| CN105633553B (en) * | 2015-12-25 | 2018-11-06 | 宇龙计算机通信科技(深圳)有限公司 | A kind of antenna system, mobile terminal and antenna tuning control system |
| WO2017206367A1 (en) * | 2016-05-30 | 2017-12-07 | 北京小米移动软件有限公司 | Communication antenna, control method and device therefor and terminal |
| US10177443B2 (en) | 2016-05-30 | 2019-01-08 | Beijing Xiaomi Mobile Software Co., Ltd. | Communication antenna, method for controlling the same and terminal |
| CN106025545B (en) * | 2016-06-29 | 2018-09-04 | 广东欧珀移动通信有限公司 | Antenna assembly and terminal device |
| CN106025545A (en) * | 2016-06-29 | 2016-10-12 | 广东欧珀移动通信有限公司 | Antenna device and terminal device |
| CN106025575A (en) * | 2016-07-01 | 2016-10-12 | 天津七二通信广播有限公司 | Antenna system applied to UV frequency band of communication terminal |
| CN106961021A (en) * | 2017-03-14 | 2017-07-18 | 珠海市魅族科技有限公司 | The intelligent selecting method of intelligent selection module and terminal antenna frequency range |
| CN112187377A (en) * | 2020-09-02 | 2021-01-05 | 珠海格力电器股份有限公司 | Antenna frequency modulation system, frequency modulation method, device and medium |
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