CN101616111B - Demodulation parameter searching method and electronic device applying same - Google Patents

Demodulation parameter searching method and electronic device applying same Download PDF

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CN101616111B
CN101616111B CN 200810129310 CN200810129310A CN101616111B CN 101616111 B CN101616111 B CN 101616111B CN 200810129310 CN200810129310 CN 200810129310 CN 200810129310 A CN200810129310 A CN 200810129310A CN 101616111 B CN101616111 B CN 101616111B
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demodulation
parameter
parameters
demodulated
data stream
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CN101616111A (en
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何国维
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台湾松下电器股份有限公司
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Abstract

The invention relates to a demodulation parameter searching method which is applied to an electronic device for receiving a channel signal and used for finding out a demodulation parameter being suitable for demodulating a data stream contained in the channel signal from a demodulation parameter assembly containing a plurality of demodulation parameters of the channel signal. The searching methodcomprises the following steps: providing a channel parameter list which records weighted values of the demodulation parameters in advance; selecting an unused demodulation parameter with a highest weighted value in the demodulation parameter assembly to demodulate the data stream of the channel signal according to the channel parameter list; if the data stream can be smoothly demodulated, weighting the demodulation parameter, and otherwise, judging whether the demodulation parameters are all used or not; and if the data stream cannot be smoothly demodulated, repeating the steps. The method improves the speed for finding out the appropriate demodulation parameter.

Description

解调参数搜寻方法及应用该方法的电子装置 The method of the electronic device search demodulation parameters and application of the method

技术领域 FIELD

[0001] 本发明涉及一种解调参数搜寻方法,特别涉及一种数字电视的解调参数搜寻方法。 [0001] The present invention relates to a method of search demodulation parameters, and particularly relates to a digital television demodulation parameters searching method.

背景技术 Background technique

[0002] 现今数字电视、数字广播及无线区域网络等高速率数字通信技术上广泛地应用无线传输的方式来传送数据,这些无线传输的信号中包含了数据流及参数等众多数据,在接收方必须经过适当的解调处理,才可从数据流中取出所需要的数字数据,例如数字电视,其中的解调器必须解调出所接收到频道信号中的数据流并送到后端进行数据流解码后,才能够播放电视节目内容。 [0002] Today digital television, digital radio and wireless LAN high speed digital communication technologies are widely applied in wireless transmission mode to transmit data, radio transmission signals contained in the data stream data and other parameters and, at the receiving side must, before digital data extracted from the data stream required through appropriate demodulation processing, such as digital television, wherein the demodulator must demodulate the received data stream of the channel signal and sent to the rear end of the data stream after decoding, to be able to play television programs.

[0003]现行一般有传输参数信令(Transmission Parameter Signaling, TPS)的地面数字电视广播系统,接收端(例如数字电视机顶盒)会与发送端以约定好且固定的解调参数对频道信号中的数据流进行解调。 [0003] There are existing general transmission parameter signaling (Transmission Parameter Signaling, TPS) terrestrial digital TV broadcasting system, a receiving end (e.g., a digital television set-top boxes) will be in good agreement with the transmitting end and demodulation parameters fixed channel signal demodulating the data stream. 然而,对于中国数字电视地面广播系统这种无传输参数信令数据的电视广播系统而言,其发送端发送的频道信号中除了包含数据流外尚需包含多种解调参数组合(例如保护间隔(Guard Interval, GI)、Modulation等,每一种解调参数组合中包括多个解调参数),并一起传送至数字电视的接收器,而接收器若要解调出节目内容,则需要分别从这几种解调参数组合中找出一个适当的解调参数,并对数据流进行解调, 才能从解调后的数据流中再解码出节目内容。 However, the Chinese terrestrial digital TV broadcasting system for such purposes without transmission parameter signaling data television broadcasting system, which channel signal sent by a transmitter in addition to containing stream comprising a plurality of demodulation parameters still need external composition (e.g., a guard interval (Guard Interval, GI), Modulation, etc., each comprising a plurality of parameter combinations demodulated demodulation parameters), and transmitted to the receiver along with the digital television, and the receiver to demodulate the program contents, respectively, is required from several combinations to find a demodulation parameters appropriate demodulation parameters and the data stream is demodulated, decoded and then to the program content from the data stream demodulated. 因此,为了找出这些解调参数,参阅图1,是现有技术中一种搜寻数字电视的解调参数的方法,以寻找GI中的解调参数为例,其在接收到频道信号后,进行以下步骤: Thus, to identify these demodulation parameters, refer to FIG. 1, a method of the prior art type of search demodulation parameters of digital television, the demodulation parameters to find an example of GI, which after receiving the channel signal, the following steps:

[0004] 步骤91,进入频道参数搜寻模式,并从该频道信号的GI中取出解调参数(例如595CPN、945VPN、420VPN、945CPN 及420CPN),并暂存至一频道参数列表中。 [0004] Step 91, the channel parameters into the search mode, and remove the demodulation parameters (e.g. 595CPN, 945VPN, 420VPN, 945CPN and 420CPN) from the GI signal in the channel and a temporary channel to the list of parameters.

[0005] 步骤92,将频道参数列表内的解调参数依序地输入解调器,而解调器采用依序输入的解调参数对频道信号中的数据流进行解调,以找出其中一个适于解调该数据流的解调参数。 [0005] Step 92, the demodulation parameters in the parameter list are sequentially input channel demodulator, the demodulator and demodulation parameters sequentially using the input data stream is demodulated channel signal, to find out where a demodulator adapted to demodulate the parameters of the data stream.

[0006] 然后,再重复上述步骤,接着找其它解调参数组合中的解调参数,待全部解调参数组合中的解调参数都被找到之后,即可顺利对该数据流进行解调,并送至后端的数据流解码电路进行节目内容的解码并结束频道参数搜寻模式。 [0006] Then, repeat the above steps, then the demodulation parameters to find other combinations of parameters demodulation, demodulation parameters after demodulation parameters until all combinations have been found, it can be successfully demodulates the data stream, to the rear end of the data stream and decoding circuit for decoding the program content and the end of the channel search mode parameters.

[0007] 但是如此的做法,使得每当使用者切换频道时,接收端都必须重新执行上述的步骤来搜寻各种解调参数组合中的解调参数,以致于接收端无法提高搜寻解调参数的速度。 [0007] However, such a practice, so that whenever the user switches channels, the receiving end must perform the above steps again search demodulation parameters to demodulator various parameter combinations, so that the receiving end can not be improved search demodulation parameters speed.

发明内容 SUMMARY

[0008] 因此,本发明的目的,即在于提供一种可以减少搜寻解调参数时间的解调参数搜寻方法。 [0008] Accordingly, an object of the present invention, i.e. to provide a method of demodulation parameters search demodulation parameters search time can be reduced. 于是,本发明解调参数搜寻方法是应用于接收频道信号的电子装置,用以从该频道信号的包含多个解调参数的解调参数组合中,找出适于解调该频道信号中的数据流的解调参数,该搜寻方法包含:[0009] (a)建立频道参数列表,其中记录有所述解调参数的加权值; Thus, the method of search demodulation parameters of the invention is applied to an electronic signal received channel means for demodulating comprises a combination of parameters from a plurality of demodulation parameters of the channel signal, demodulating the channel is adapted to identify the signal demodulating the data stream parameters, the search method comprising: [0009] (a) establishing a channel parameter list, which is recorded said demodulated weighted value of the parameter;

[0010] (b)根据该频道参数列表,选择该解调参数组合中加权值最高且未被使用的解调参数; [0010] (b) based on the channel parameter list, select the demodulation parameters demodulation parameters and not the maximum value of the weighted combination is used;

[0011] (C)采用该被选择的解调参数对该频道信号的数据流进行解调,若可顺利解调该数据流,则对该被选择的解调参数的加权值加权,否则执行步骤(d);并且 [0011] (C) using the parameters of the demodulator demodulates the selected data stream of the channel signal, when the data stream can be demodulated successfully, then the weighted value weighted demodulated parameter is selected, otherwise step (D); and

[0012] (d)判断所有解调参数是否都被使用过,若否,重复步骤(b)及(C)。 [0012] (d) determining whether all the demodulation parameters are used, if not, repeating steps (b) and (C).

[0013] 本发明的频道参数列表中解调参数的加权值可为一预设值,或是每次执行步骤(C)后,所被加权累加的次数。 [0013] the weighting value of the channel parameter list of demodulation parameters according to the present invention may be a preset value, or each time after step (C), the number of times the accumulated weighted. 此外,频道参数列表中解调参数的加权值是由高到低进行排序的。 Further, the weighted value of the channel demodulation parameters in the parameter list is sorted in descending order of.

[0014] 根据本发明的另一方面,提供了一种电子装置,接收频道信号,所述频道信号包含具有多个解调参数的解调参数组合以及数据流,其特征在于: [0014] According to another aspect of the present invention, there is provided an electronic device, receiving a channel signal, the channel signal comprising a demodulated data stream having parameters as well as a combination of a plurality of demodulation parameters, wherein:

[0015] 所述电子装置包含: [0015] The electronic device comprises:

[0016] 控制模块,储存与所述解调参数对应的加权值,并接收所述解调参数,且选择加权值最高且未被使用的解调参数来输出;以及 [0016] The control module, the storage and the demodulation parameters corresponding to the weighted value, and receiving the demodulation parameters, and select the demodulation parameters are used and not the highest weighted value to output; and

[0017] 解调器,耦接于所述控制模块,并接收所述频道信号的数据流以及所述控制模块所输出的解调参数,所述解调器根据所述被选择的解调参数对所述数据流进行解调,如果可顺利解调所述数据流,则所述控制模块对所输出的解调参数的加权值加权,否则,所述控制模块会提取出另一加权值最高且未被使用的解调参数给所述解调器进行解调。 [0017] The demodulator, coupled to the control module, and receiving the data stream and the control channel signal output by the demodulation parameter module, the demodulator is selected in accordance with the demodulation parameters demodulating the data stream, if the data stream can be demodulated successfully, then the control module weighted demodulated output weighting parameter, otherwise, the control module extracts another highest weighted value demodulation parameters and not to be used to demodulate the demodulator.

[0018] 本发明的有益效果在于:优先提取出加权值较高的解调参数进行解调,可以提高第一次就能够解调出节目内容的机率,降低解调失败的次数,以减少搜寻解调参数的时间。 [0018] Advantageous effects of the present invention is: the higher the priority of the extracted weighted value demodulates demodulation parameters, can increase the chance for the first time it is possible to demodulate the program content, reducing the frequency demodulation failed to reduce the search demodulation time parameter.

附图说明 BRIEF DESCRIPTION

[0019] 图1是流程图,说明现有技术的解调搜寻方法。 [0019] FIG. 1 is a flow chart illustrating a search method of the prior art demodulation.

[0020] 图2是电路框图,说明本发明的优选实施例中电子装置内的元件关系。 [0020] FIG. 2 is a circuit block diagram illustrating the relationship between elements in the preferred embodiment the electronic device of the present invention.

[0021] 图3是数据库,并包含GI及Modulation频道参数列表,说明解调参数组合GI和Modulation中的解调参数及其对应的加权值。 [0021] FIG. 3 is a database, and a Modulation and channel parameters comprising a list of GI described demodulation parameters and demodulation parameters corresponding to the weighted value of Modulation and GI combination.

[0022] 图4是流程图,说明本发明的解调参数搜寻方法。 [0022] FIG. 4 is a flow chart illustrating the demodulation parameters of the search method of the present invention.

具体实施方式 Detailed ways

[0023] 有关本发明的前述及其他技术内容、特点与功效,在以下配合参考图式的一个优选实施例的详细说明中,将可清楚的呈现。 [0023] For the aforementioned and other technical contents, features and effects of the present invention, the following detailed description with reference to the drawings of a preferred embodiment, the presentation will be apparent.

[0024] 参阅图2,是本发明解调参数搜寻方法的优选实施例,该搜寻方法是应用于高速率数字通信的电子装置1上,而本实施例的电子装置1为内建于数字电视的数字电视机顶盒(Set Top Box, STB),其主要是利用无线传输的方式接收电视台发送的数字电视节目信号(以下统称频道信号)。 [0024] Referring to Figure 2, the search method is an embodiment of the present invention is preferably demodulation parameters, the search method is applied to the high-rate digital communications on the electronic device 1 and the electronic apparatus of the present embodiment is built in the digital television 1 the STB (Set Top Box, STB), which is primarily a digital television program signal (hereinafter referred to as channel signals) using a wireless transmission received television transmission. 在无传输参数信令(Transmission Parameter Signaling,TPS)的电视广播系统中,发送端(电视台)所发送的每一频道信号会包含数据流(其中包含数字电视节目内容)以及多种解调参数组合,其中解调参数组合有保护间隔(Guard Interval, GI) ,Modulation等,而每个解调参数组合中又具有多个解调参数,因此,不管数字电视机顶盒是外接还是内建的,其必须从所接收到频道信号中,分别在每一个解调参数组合中提取出一个适当的解调参数,才能对数据流进行解调。 In the television broadcasting system has no transmission parameter signaling (Transmission Parameter Signaling, TPS), the end of each channel signal will be transmitted (television) containing the transmitted data stream (which contains a digital television program content) and various combinations of demodulation parameters wherein the demodulation parameters in combination with a guard interval (Guard interval, GI), Modulation, etc., and each parameter set having a plurality of demodulation and demodulation parameters, and therefore, regardless of the STB is external or internal, which must channels from the received signal, respectively, to extract an appropriate demodulation parameters each parameter combination a demodulation to demodulate the data stream.

[0025] 在本实施例中,数字电视机顶盒除了既有用以对应选台信号,选择所接收的对应的频道信号的相关处理电路(图未示)之外,还包含用以搜寻解调参数,以对该频道信号中的数据流进行解调处理的控制模块2以及解调器3。 [0025] In the present embodiment, in addition to both the STB corresponding to the corresponding correlation processing circuitry (not shown) signals the channel selection signal, selecting received, but also to search demodulation parameters comprises, demodulating the data stream processing in the control channel signal and a demodulator module 3 2. 控制模块2会从频道信号中取出多种解调参数组合,并从每一解调参数组合中送出解调参数至解调器3。 The control module 2 will be removed from the plurality of demodulated channel signal parameter combination, and sends demodulation parameters to demodulator 3 demodulates the parameters from each combination. 而解调器3则耦接于控制模块2,并接受频道信号中的数据流及控制模块所发送出的解调参数,以根据这些解调参数对数据流进行解调后,再送至后端的解码单元4,以便从解调后的数据流中解出节目内容并输出。 The demodulator 3 is coupled to the control module 2, and demodulates the receiving signal channel parameters and the data stream transmitted by the control module to demodulate the data stream after demodulation in accordance with these parameters, and then sent to the backend a decoding unit 4, to solve the program content from the data stream and outputs the demodulated.

[0026] 而为了使控制模块2能够快速地找到适当的解调参数,本实施例的控制模块2包含有数据库21,该数据库21是储存在控制模块2中的存储器(图未示)中,其包含用于分别记录每一解调参数组合中的多个解调参数的加权值的GI参数列表以及Modulation参数列表,如图3所示,其中,GI参数列表中记录有五个解调参数420CPN、945VPN、595CPN、945CPN 及420VPN,且其预设的加权值分别为5、3、2、1及0,而Modulation参数列表中也记录有五个解调参数64QAM、16QAM、32QAM、4QAM及4QAM-NR,且其加权值分别预设为5、3、2、1及0。 [0026] In order to make the control module 2 can quickly find the appropriate demodulation parameters, the control module 2 according to the present embodiment comprises a database 21, the database 21 is a storage memory (not shown) in the control module 2, comprising means for recording the parameter list of weight values ​​GI plurality of demodulation parameters for each parameter combination Modulation and demodulation parameter list, respectively, as shown, wherein, the parameter list is recorded GI five demodulation parameters 3 420CPN, 945VPN, 595CPN, 945CPN and 420VPN, predetermined weighting value and which are 5,3,2,1 and 0, and Modulation parameter list demodulation parameters are also recorded five 64QAM, 16QAM, 32QAM, 4QAM and 4QAM-NR, and the weighted values ​​are preset to 5,3,2,1 and 0.

[0027] 本发明解调参数的搜寻方法如图4所示的流程。 The flow shown in FIG. 4 [0027] The method of the present search demodulation parameters of the present invention shown in FIG. 当电子装置1接收到一频道信号后(也就是使用者选择某一个频道时),会进入频道参数搜寻模式并且执行以下步骤(以搜寻GI解调参数来说明): (I.e. when a user selects a channel) when the electronic device 1 receives a channel signal, the channel parameters will enter the search mode and performs the following steps (GI search demodulation parameters to be described):

[0028] 步骤41,控制模块2根据数据库21的GI参数列表中各个解调参数的权值大小,从频道信号的GI解调参数组合中选取其中一个加权值最大且未被使用的解调参数送至解调器3,在此假设本步骤是第一次被执行,所以GI解调参数组合中所有的解调参数都未被使用,则控制模块2会提取出解调参数420CPN(加权值最大)。 [0028] Step 41, the control module 2 in accordance with the size of the value of the parameter list database 21 GI weights of the respective demodulation parameters, wherein the demodulation parameters to select a maximum weighted value and has not been used in the demodulation parameter combination from the GI channel signal supplied to a demodulator 3, it is assumed here that this step is performed first time, the combination of all GI demodulation parameters demodulation parameters are not used, the control module 2 extracts the demodulation parameters 420CPN (weighted value maximum).

[0029] 步骤42,解调器3接收控制模块2所提供的解调参数(420CPN)及频道信号中的数据流,并利用该解调参数对数据流进行解调,若解调器3可以顺利解调该数据流,则控制模块2会终止搜寻动作并将数据库21中该解调参数(420CPN)的权值加权(例如加一),且为了提高搜寻的速度,控制模块2会将GI参数列表中的所有解调参数依权值高低重新排列; 反之,若解调器3无法解调该数据流,则执行步骤43。 [0029] Step 42, the demodulation parameters (420CPN) demodulator 3 receives the control module 2 and the data stream provided by the channel signal, and using the parameter data stream demodulated is demodulated, the demodulator 3 can if successfully demodulate the data stream, the control module 21 in 2 terminates the demodulation parameters (420CPN) weights weighting operation and a database search (e.g., a plus), and to increase the search speed, the control module 2 will GI parameter list of all demodulation parameters according to the high and low weights rearranged; the other hand, if the demodulator 3 demodulates the data stream can not, step 43 is executed.

[0030] 在步骤43中,控制模块2判断是否所有的解调参数都被使用过,若还有未被使用的解调参数,则重复执行步骤41及步骤42,也就是说,假设步骤41所提出的解调参数420CPN无法解调数据流,则再重复步骤41时,具有第二高权值的解调参数945VPN将被提出(因为解调参数420CPN已经被使用过)并进行步骤42 ;反之,在重复经过步骤41、42后,若GI参数列表中所有的解调参数都被使用过且皆无法解调数据流,就表示使用者所选择的频道中并无数据流,则控制模块2会终止搜寻动作,即使用者将不会看到节目内容。 [0030] In step 43, the control module 2 determines whether all the demodulation parameters are used, if there are unused demodulation parameters, repeat step 41 and step 42, i.e., step 41 is assumed when the proposed demodulation parameters 420CPN not be demodulated data stream, and then repeat step 41, a second demodulation parameters 945VPN having a high weight value will be raised (since the demodulation parameters 420CPN has been used) and proceeds to step 42; Conversely, after repeated through step 41, if all the GI demodulation parameters in the parameter list are not used and are demodulated data stream, it means that the user selected channel is not in the data stream, the control module 2 terminates the search operation, that user will not see the program content.

[0031] 同样地,对于频道信号中的另一组解调参数组合Modulation,也可依上述的步骤搜寻出一个能够解调数据流的解调参数,并且当从每一个解调参数组合中皆找到适当的解调参数后,则解调器21即可以利用这些解调参数对数据流解调。 [0031] Similarly, another set of parameter combinations to demodulate a channel signal Modulation, also follow the above step a search parameter data stream can be demodulated by the demodulator, and when each of all combinations of parameters from the demodulation after finding the appropriate demodulation parameters, i.e., the demodulator 21 may use these parameters to demodulate the data stream demodulated.

[0032] 由于电子装置1经过长时间的使用,每次使用者切换频道时,电子装置1都会利用上述的搜寻方法来寻找适当的解调参数,因此,常用的解调参数的加权值将会不断的被增加,也就是常用的解调参数一直会被优先提出至解调器3进行解调,提高了在第一次就能够找到正确解调参数的机率,而进一步降低了解调错误的次数,使得搜寻解调参数的时间能够大幅度的减少。 [0032] Since the electronic apparatus 1 after a long period of time each time the user switches the channel, the electronic device 1 will use the above-described search method to find the appropriate demodulation parameters, therefore, the weighted value will be used in the demodulation parameters constantly being increased, which is commonly used demodulation parameters have been proposed to be a priority demodulator 3 demodulates and improve the chances for the first time will be able to find the correct demodulation parameters, and to further reduce the number of demodulation error , demodulation parameters such that the search time can be greatly reduced.

[0033] 此外,值得一提的是,上述数据库21中的解调参数的加权值可以是程序设计者所预先设定的预设值(即出厂即已预设),也可以经过上述搜寻流程搜寻十个频道信号(或者更多频道)后所建立出来的加权值。 [0033] In addition, it is worth mentioning that the weighted value of the demodulation parameters in the database 21 may be a program designer predetermined preset value (i.e., already factory preset), through said search process may be established after searching out of ten signal channel (or more channels) weight value. 当然,建立数据库21中的解调参数的加权值的方法还可以是电子装置1在第一次被开启时,就先对所有频道扫描一遍,找出每一频道信号对应的解调参数,使得在频道被选择之前即可建立出数据库21中解调参数的加权值。 Of course, the demodulation method for establishing a weight value parameter database 21 may also be an electronic device is turned on the first time, it scans all the channels again, to find a signal corresponding to each channel demodulation parameters, such before a channel is selected to create a weighted value database 21 in the demodulation parameters. 另外,电子装置1还包括重置键(图未示),使用者可视需要通过按压重置触发控制模块2,使得控制模块2将数据库21中所有解调参数组合中的解调参数的加权值重置为零,或者由控制模块2自行设定经过一段时间后,自动将数据库21中所有解调参数组合中的解调参数的加权值重置为零。 Further, the electronic apparatus 1 further comprises a reset button (not shown), as needed by the user pressing a reset trigger control module 2, so that the control module 2 to 21 weight demodulation parameters database all combinations demodulation parameters value is reset to zero, or set by the control module 2 itself after some time, the weighted value is automatically reset demodulation parameters database all the demodulators 21 parameter combinations is zero.

[0034] 综上所述,本发明解调参数搜寻方法是借助加权值的概念,在每一次找到解调参数后将其权值加权,且优先将有较高加权值的解调参数提取出至解调器进行解调,提高了第一次就能够解调出节目内容的机率,降低了解调错误的次数,使得本发明搜寻方法相较于现有技术,其搜寻时间可将大幅度的减少。 [0034] In summary, the present invention search demodulation parameters by means of the method is the concept of a weighted value, weighted its weight, and preferentially have a higher weighting the demodulated parameter values ​​extracted after the demodulation parameters each time found a demodulator to demodulate to improve the chances for the first time it is possible to demodulate the program content, reduce the number of demodulation error, so the search process of the invention compared to the prior art which seek time can be greatly cut back.

Claims (9)

1. 一种解调参数搜寻方法,应用于接收频道信号的电子装置,用以从所述频道信号的包含多个解调参数的解调参数组合中,找出适于解调所述频道信号中的数据流的解调参数,其特征在于:所述解调参数搜寻方法包含以下步骤:(a)建立频道参数列表,在该列表中记录有所述解调参数的加权值;(b)根据所述频道参数列表,选择所述解调参数组合中加权值最高且未被使用的解调参数;(c)采用所述被选择的解调参数对所述频道信号的数据流进行解调,如果可顺利解调所述数据流,则对所述被选择的解调参数的加权值加权,并在加权后结束流程,否则执行步骤(d);并且(d)判断所有解调参数是否都被使用过,若否,则重复步骤(b)及(C)。 A method of search demodulation parameters, applied to an electronic device receives the channel signal to demodulation combination of parameters from a plurality of demodulation parameters comprises the channel signal, demodulating said channel signal is adapted to find demodulation parameter data stream, wherein: the demodulation parameter search method comprising the steps of: (a) establishing a channel parameter list, records in the list in which the weighted value of the parameter demodulator; (b) the demodulated by the demodulator parameter combination not in use by the maximum weighting value in the parameter list according to the channel selection; (c) using said selected demodulation parameters to the data stream is demodulated channel signal if the demodulated data stream can be smoothly weighting value of the weighting parameter is the demodulation is selected, and the process ends after weighted, otherwise step (D); and (D) determining whether all the demodulation parameters have been used, and if not, repeating steps (b) and (C).
2.如权利要求1所述的解调参数搜寻方法,其特征在于:所述频道参数列表中所述解调参数的加权值可为预设值。 2. The method of search demodulation parameters according to claim 1, wherein: said channel in said demodulated weighting parameter list parameter value may be a preset value.
3.如权利要求1所述的解调参数搜寻方法,其特征在于:所述频道参数列表中每一解调参数的加权值为执行步骤(c)后,所被加权累加的次数。 Demodulation parameters search method according to claim 1, wherein: each said channel parameter list parameter is a weighted demodulated performing step (c) the number of times, the accumulated weighted.
4.如权利要求2或3所述的解调参数搜寻方法,其特征在于:所述频道参数列表中所述解调参数的加权值从高到低进行排序。 4. The method of search demodulation parameters 2 or claim 3, wherein: said channel list parameter values ​​of the parameters weighting the demodulated descending sort.
5. 一种电子装置,接收频道信号,所述频道信号包含具有多个解调参数的解调参数组合以及数据流,其特征在于:所述电子装置包含:控制模块,储存与所述解调参数对应的加权值,并接收所述解调参数,且选择加权值最高且未被使用的解调参数来输出;以及解调器,耦接于所述控制模块,并接收所述频道信号的数据流以及所述控制模块所输出的解调参数,所述解调器根据所述被选择的解调参数对所述数据流进行解调,如果可顺利解调所述数据流,则所述控制模块对所输出的解调参数的加权值加权,否则,所述控制模块会提取出另一加权值最高且未被使用的解调参数给所述解调器进行解调。 An electronic device, receiving a channel signal, the channel signal comprising a demodulated data stream having parameters as well as a combination of a plurality of demodulation parameters, wherein: said electronic device comprising: a control module, and storing said demodulation parameter corresponds to the weighted value, and receiving the demodulation parameters, and select the demodulation parameters are used and not the highest weighted value to the output; and a demodulator, coupled to the control module, and receive a channel signal demodulation parameters and the data stream output by the control module, the demodulator demodulating the demodulated data stream according to the selected parameter, if the data stream can be demodulated successfully, then the the control module weighted value weighted demodulated output parameter, otherwise, the control module extracts the highest weighted value further demodulation parameters and not to be used to demodulate the demodulator.
6.如权利要求5所述的电子装置,其特征在于:所述控制模块还包括存储器,用于储存所述解调参数组合中各个解调参数的加权值。 The electronic device as claimed in claim 5, characterized in that: said control module further comprises a memory for storing said demodulated weighted value of each parameter set of demodulation parameters.
7.如权利要求5所述的电子装置,其特征在于:所述电子装置还包括重置键,通过所述重置键被触发,所述控制模块会将所有解调参数的加权值重置为零。 The electronic device according to claim 5, wherein: said electronic device further comprises a reset button, is triggered by the reset button, the control module will reset all of the weighting values ​​of the demodulation parameters zero.
8.如权利要求5所述的电子装置,其特征在于:所述电子装置还包含耦接于所述解调器的解码单元,用于对解调后的数据流进行解码并输出节目内容。 The electronic device according to claim 5, wherein: said electronic device further comprises a decoder coupled to the demodulator for the data stream and decodes the demodulated outputs the program contents.
9.如权利要求7所述的电子装置,其特征在于:所述电子装置为数字电视机顶盒及内建机顶盒的数字电视其中之一。 9. The electronic device according to claim 7, wherein: the electronic device is one of the built-in STB and the digital TV set-top box which.
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