CN100574366C - Channel conversion in digital cable set-top box - Google Patents

Channel conversion in digital cable set-top box Download PDF

Info

Publication number
CN100574366C
CN100574366C CN 200510030223 CN200510030223A CN100574366C CN 100574366 C CN100574366 C CN 100574366C CN 200510030223 CN200510030223 CN 200510030223 CN 200510030223 A CN200510030223 A CN 200510030223A CN 100574366 C CN100574366 C CN 100574366C
Authority
CN
Grant status
Grant
Patent type
Prior art keywords
channel
conversion
top
digital
cable
Prior art date
Application number
CN 200510030223
Other languages
Chinese (zh)
Other versions
CN1941845A (en )
Inventor
李在翰
柳升昊
Original Assignee
上海乐金广电电子有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Abstract

本发明是关于在开放电缆方式的数字电缆广播接收机中的信道转换方法。 The present invention relates to a channel changing method of the embodiment in an open cable digital cable broadcast receiver. 本发明具有下述特征。 The present invention has the following features. 信道转换时,在相关信道的SVCT中只解析一个与叙述的程序编号(program_number)相匹配的PAT/PMT,提取的节目信息和SVCT中提取的信道信息作为基础,对相关信道的节目进行调整和解码,并显示上述信息。 When the channel is switched, the SVCT the associated channel parsed only one of the procedures described in number (a program_number) matches the PAT / PMT, the extracted program information and SVCT extracted channel information as a basis for the associated channel program to adjust and decoding and displaying the information. 所以,依据本发明在信道转换时,即使是进行物理信道变换也能够使信道转换时间达到最小化。 Therefore, according to the present invention, when channel switching, even if the physical channel is also possible to transform the channel switching time minimized. 另外,在信道转换时,进行物理信道变换或不进行变换,因为只解析一个PAT/PMT,所以无论使用任何信道进行转换,其信道转换时间几乎相似。 Further, when the channel switching, the physical channel conversion or conversion is not performed, because only a parsed PAT / PMT, so that any channel regardless of conversion, which is almost similar to the channel switching time.

Description

方法 method

【技术领域】 TECHNICAL FIELD

本发明是关于数字电缆广播接收机,特别是以开放电缆为基础的数字机顶 The present invention relates to a digital cable broadcast receiver, in particular in the open cable-based digital set-top

盒(Open Cable Set Top Box)内的信道转换方法。 Channel changing method in a cassette (Open Cable Set Top Box). 【背景技术】 【Background technique】

我们国家以开放电缆方式作为国内数字有线广播标准,上述开放电缆方式使用的是,以音频压缩方式的杜比-AC3和视频方式的MPEG-2。 Our country as a way to open the domestic cable digital cable broadcasting standard, way above the open cable using Dolby -AC3 video and audio compression method of MPEG-2. 另外,对于高附加值的广播内容,为了防止盗版和干扰而采用的配置点(Point Of D印loyment, 简称P0D)模块,从数字电缆机顶盒开始就进行分离;另外,保安系统提供了操作方便的功能,同时设备也有零售,所以数字电缆广播接收机还有廉价的优点。 Further, for high value-added broadcast contents, arranged point (Point Of D printing loyment, referred P0D) module, separated from the beginning digital cable set-top box in order to prevent piracy and interference employed; in addition, provides a security system easy to operate function, but also has retail facilities, so digital cable broadcast receiver as well as low-cost advantage. S口,电缆机顶盒内存在的包含限制接收系统(Conditional Access;简称CA)的P0D模块,从机顶盒开始进行分离;定义机顶盒和POD模块之间的标准接口(I/F),如果符合P0DI/F,任何人都可以制造机顶盒。 S port, cable set-top box contains memory access systems (Conditional Access; abbreviated CA) in P0D module, separated from the set-top box starts; standard interface (I / F) is defined between the POD module and set-top boxes, if they meet P0DI / F , anyone can manufacture set-top boxes. 所以,消费者可以像购买VCR—样直接购入上述机顶盒,电缆系统运营商(system operator; SO)如果向用户提供用户P0D模块,用户使用上述POD模块和电缆机顶盒,可以接收各种电缆广播。 Therefore, consumers can buy VCR- comp purchased directly as the STB, a cable system operator (system operator; SO) if the user provides the user P0D module, the user using the POD module and the cable set-top box, a cable may receive various broadcast.

另外,上述开放电缆方式,为了提供双向(向上、向下)服务,使用必要的上限带宽5—42MHz,带内(InBand)下限的信道带宽幅度是与国内信道环境相同的6MHz。 Further, the above-described embodiment the cable opening, in order to provide two-way (up, down) service, with the necessary upper bandwidth 5-42 MHz, with amplitude within the channel bandwidth (InBand) the lower limit of the channel environment is a domestic same 6MHz. 另外,信道和广播节目介绍信息使用带外(Out Of Band;简称00B, 即频带外)系统信息(System Information,简称SI)和带内(同带信号传输) 的程序特定信息(Program Specific Information,简称PSI)。 Further, the channel and the broadcast program introduction to the information using the band (Out Of Band; referred to are 00B, i.e., out of band) system information (System Information, abbreviated SI) and program specific information (inband signaling) in the belt (Program Specific Information, referred to as PSI).

图1表示, 一般的开放电缆方式的数字电缆机顶盒的构成示意图。 1 shows a schematic view of the general configuration of the digital cable set-top box open cable mode. 主要有以下装置组成,电缆机顶盒100和分离的P0D模块200。 Means the following main composition, cable set-top boxes 100 and 200 separated P0D module.

上述电缆机顶盒装置IOO与观看数字电缆使用的节目的一种广播局的电缆顶端器连接,通过电缆信道带宽中的内带,接收A/V广播节目;通过外带,使用顶端器进行双向通信。 It said cable set top box connected to the means to view the program IOO digital cable using a cable broadcasting station to the top is one kind, in-band cable channel bandwidth, the receiving A / V broadcast program; outer band by using a filter tip bidirectional communication.

艮[3,通过顶端器的A/V广播节目,经过调谐器111和解调装置112进行调整和解调后,使用POD模块装置200输出。 After Gen [3, through the tuner 111 and the demodulation means 112 demodulates and adjust A / V broadcast program to the top of the device, using the apparatus 200 outputs the POD module.

另外,通过OOB,传输的信道调整和与节目介绍相同的数据信息,通过OOB 传/接装置113,使用POD模块输出。 Further, the same presentation data OOB information, channel adjustment and the program transmission, transmitted by OOB / bonding apparatus 113, using the POD module output.

上述POD模块装置200接收的广播信号的解码,使用PCMCIA形态卡分离用户确认作业等操作。 Means for decoding the above-described POD module 200 receives a broadcast signal, using a PCMCIA card from a user confirmation action form and other operations.

所以,在上述POD模块装置200内CA系统在上述解调后的信号进行解码的情况下,使用机顶盒装置100的传送带(TP)多重化处理装置116输出。 Therefore, in the case where the POD module 200 CA device system in decoding the demodulated signal, the conveyor apparatus set-top box 100 (TP) 116 outputs of the multiple processing apparatus.

上述多重化处理装置116,经过多重化处理后分离为视频和音频数据包, 使用各视频解码器117和音频解码器118,以及PSE解析装置119输出。 The above-described multiplexing processing unit 116, after the separation treatment multiplexed video and audio packets, using each of the video decoder 117 and the audio decoder 118, an output device 119 and parsing PSE. 上述视频解码器117在视频数据包中控制内务操作(各种首标信息、启动码等), 对纯粹的数据信息进行可变长度解码(Variable Length Decoding;简称VLD) 后经过量子化过程,离散余弦变化(IDCT)处理,再经过利用操作矢量的补偿过程,使用原来画面的象素值复原后,再由监视器输出。 Said video decoder 117 controls the overhead (various header information, start codes, etc.) in the video data packet, the data information of the purely variable-length decoding (Variable Length Decoding; referred to as VLD) process after quantization, discrete cosine (IDCT) processing, and then after the operation using the compensation vector using the original pixel values ​​of the restored picture, and then the monitor outputs. 另外,音频解码器118 利用AC-3算法,对音频数据包解码后使用扬声器输出。 Further, the audio decoder 118 using the AC-3 algorithm, using a speaker and outputs the decoded audio data packets.

另外,利用现有的地上波或卫星的机顶盒,如果接通电源,首先扫描所有能够进行调整的信道后并存储。 Further, the use of conventional ground wave or satellite set-top box, if the power is turned on, first scans all the channels can be adjusted and stored. 以后,如果用户选择信道,读取存储的扫描信息调整到相关的信道。 Later, if the user selects a channel, reading the stored scanning information to the relevant channel adjusted.

与上述相反,开放电缆机顶盒内没有信道扫描功能(Channel Scan Function)。 Contrary to the above, there is no channel scan function (Channel Scan Function) the open cable set-top box. 电源接通后如果用户选择信道,通过系统信息(System Information,简称SI)对进入的虚拟信道表(Virtual Channel Table,简称VCT)进行实时解析,得到相关信道的^"息,从该信道信息开始调整信道。在使用上述VCT电缆机顶盒的情况下,被称作简洁格式虚拟信道表 After the power is turned on if the user selects a channel, real-time parsing incoming virtual channel table (Virtual Channel Table, referred to as VCT) system information (System Information, referred to as the SI), to give the associated channel ^ "message, starts the channel information from adjusting the channel. in the case of using the VCT cable set-top box, it is referred to as a virtual channel table format concise

(Short-form VCT ,简称SVCT),在区分地上波的情况下也被称作SVCT。 (Short-form VCT, referred SVCT), in the case of distinguishing terrestrial also referred SVCT. 艮卩,即使中数字电缆广播中,为了使用用户可以接收最基本的广播,能够为用户提供信道信息和各信道的节目介绍信息。 Gen Jie, even if the digital cable broadcasting, the user may receive in order to use the most basic broadcast channel information can be provided for each channel and program information to introduce the user. 其中PSI包括能够显示特定信道的A/V (音频/视频)画面的信息,通过带内与广播节目一起传输。 PSI includes capable of displaying information wherein a particular channel A / V (audio / video) pictures of a broadcast program together with the transmission through the inner band. 即,PSI包括在数字电缆机顶盒多重化处理后的信息 I.e., PSI information included in the multiplexed digital cable set-top box processing

流中,对特定的信息流进行多重化处理,能够对处理后的信息进行解码的信息。 Stream multiplexing unit for a particular stream, the decoded information can be information processed. 另外,SI包括能够调整信道的信息,通过OOB传送。 In addition, the SI includes information about the channel can be adjusted through the OOB transmission.

此时,上述PSI包括程序群丛表(Program Association Table,简称PAT) 和程序映射表(Program Map Table,简称PMT),上述SI中包括SVCT。 Here, the PSI includes a program association table group (Program Association Table, referred to as PAT) and program map tables (Program Map Table, referred to as the PMT), including the above-described SI SVCT.

上述PAT对记述每个节目番号内的节目构成要素,挑选传送PMT的传送带数据包的PID。 PAT above-described components of each program described in the program designation, selection of belt PID of PMT packet is transmitted. 上述PMT记述,节目识别番号和构成节目的音频、视频的个别比特传送的传送带数据包PID信息和PCR传送的PID信息。 PID information PID of the packet conveyor conveying individual PCR information bits transmitted PMT described above, program identification and designation constituting the program audio, video.

上述SVCT在SI中定义一个表格,如图2所示,表示一般的电缆使用的SVCT 比特流新图表构造示意图。 SVCT above a table defined in the SI, as shown in FIG. 2, a schematic diagram showing a general configuration of the new chart of cables SVCT bitstream.

如图2所示,虚拟信道数(Virtual—channel_number)在物理信道内的多个信道中提取其中一个信道的信道番号,CDS参考(CDS_referenCe)是上述信道番号的物理信道的预置信道。 As shown, the number of virtual channels (Virtual-channel_number) a plurality of channels within the physical channel to extract a channel of a channel designation, the CDS reference (CDS_reference) 2 preset channel physical channel the channel designation of the. 即, 一个物理信道内存储多个信道, 一个信道只有一个相对应的广播节目。 I.e., a physical channel memory within the plurality of channels, only one channel corresponding to one broadcast program. 例如:如果物理信道内存在5个信道,上述物理信道内存在5个广播节目。 For example: If the physical channel memory channel 5, the above-described physical channel memory 5 in the broadcast program.

程序编号(program—number)表示为了连接MPEG-2 PAT和PMT定义的信道的节目番号,与上述PAT/PMT内的节目番号一致。 Program number (program-number) in order to connect the program designation indicates channel MPEG-2 PAT and PMT defined, coincides with the program designation within the PAT / PMT.

MMS—参考(MMS_reference)是调制信息。 Reference MMS- (MMS_reference) modulation information. 即,与上述信道对应的广播节目的传送方式。 That is, the above-mentioned broadcast program corresponding to the channel transmission scheme. 下面举例进行说明,开放电缆方式如果在带内的情况下,使64QAM (Quadurature Amplitude Modulation)或256QAM方式;如果在00B的情况下,则使用QPSK传输方式。 The following example will be described below, an open cable mode if the tape within the case, so 64QAM (Quadurature Amplitude Modulation) or 256QAM mode; if the case 00B, QPSK transmission is used.

因此,如果解析SVCT,可以知道物理信道数、与上述物理信道相符的信道频率、调制方法等信息。 Thus, if an SVCT parsing, can know the number of physical channels, consistent with the above-described physical channel frequency channels, modulation method information.

如前所述,上述物理信道即使很小也有一个以上的信道。 As described above, even if the above-described physical channel also has at least one small channel. 例如: 一个物理信道内有5个信道,另一个物理信道内有20个信道。 For example: There are five channels in one physical channel to another physical channel 20 within the channels. 各物理信道内存在的信道数,每个物理信道都不相同。 Each physical channel number of memory channels, each physical channel are not the same.

用户利用遥控器的数字键,选择特定信道或者也可以使用上/下键转换信道,每次发生信道转换时预置信道也会随之跟着转换。 User numeric keys on the remote control, to select a particular channel may be used or the up / down conversion key channel, the channel preset channel conversion will also follow each occurrence of conversion. 根据信道转换,虽然信道变化了但是物理信道可能跟着变换了也有可能没有变换。 The channel conversion, although physical channel changes but the conversion may be followed by channel may also not converted. 例如:被称作IO For example: it is called IO

的物理信道内存在101、 102、 103的信道,此时如果用户选择IOI的节目后想选择103的节目,虽然信道从101的节目转换到103,但是物理信道10不会发生变化。 Physical channel memory 101, the channel 102, 103, at this time if the user selects a program IOI 103 want to select a program, although the program from channel 101 to the converter 103, the physical channel 10 does not change. 但是,在接收信道101的节目时想选择接收106的节目,物理信道从IO转换到了20。 However, when the receiving program 101 of the channel 106. To select receiving program, the physical channel conversion from IO to 20.

从前,信道转换时如果物理信道也转换,转换后的物理信道内存在所有解析后的信道,构成信道图表后利用上述信道图表的信息,调整相关信道。 Previously, the channel conversion if the conversion is also a physical channel, a physical channel memory the converted channel parsed after all, the channel configuration information using the channel graph chart, adjust the relevant channel. 另外, 转换时,如果信道没有转换,对于上述物理信道,由于信道图表的信息已经形成,利用没有解析的现存信道图表的信息,调整相关信道。 Further, the conversion, if the channel is not switched, the above-described physical channel, since the channel information of the chart has been formed, using the information channel does not resolve existing chart, adjust the relevant channel.

如上所述,对以前的信道进行转换时,为了调整转换后的信道,必须首先确认物理信道是否转换。 As described above, when the previous channel conversion in order to adjust the converted channel, must first verify the physical channel conversion.

图4表示,依据本发明的信道转换方法的实施例流程示意图,该转换方法共包括以下组成部份和步骤。 Figure 4 shows, according to the channel changing method of the present invention, a schematic embodiment of the process, the total conversion method comprising the step portion and the following composition. 用户需要视听特定的节目,如果转换信道的过程为401步骤;信道转换引擎过程为115步骤;根据信道转换,判断物理信道是否转换的过程为402步骤。 The user needs to viewing a particular program, if the process of changing channels to step 401; channel conversion engine 115 to process step; conversion according to a channel, determines whether the physical channel conversion process of step 402.

如果判断结果为物理信道变换了,控制SI解析装置114,解析上述物理信道内存在的所有信道的SVCT,构成信道图表信息后存储的过程为403步骤。 If the determination result is converted physical channel, the control SI analyzer 114, the above parsing all the channels in the physical channel memory of an SVCT, channel configuration information is stored in the chart for the process of step 403. 上述SVCT表示,在通过上述OOB和POD模块输入的SI中定义的表格中的一个。 SVCT above said table defined in OOB SI via the POD module and one input.

此时,信道内的实际视频/音频/PCRPID不在SI内,所以上述信道变换的引擎115重新从SVCT中提取的信道信息,使用PSI解析装置119输出。 In this case, the channel within the actual video / audio / PCRPID not within the SI, so that said channel conversion engine 115 re-extracted from the SVCT channel information output apparatus 119 using the PSI parsing. PSI解析装置119以上述信道信息为基础,解析与存在于相关物理信道内的所有信道匹配的各PAT和上述PAT内定义的所PMT,使用变换引擎115输出。 PSI parsing unit 119 based on the channel information and parse all channels present in the associated physical channel matching each of the inner PAT PAT and the PMT are defined, using the transformation engine 115 output. 在上述信道变换引擎115内,上述PAT/PMT中解析后的信息与存储到信道图表信息内后, 以存储后的信道图表信息为基础,控制调谐器111和多重化处理装置116,调整用户在401步骤中选择的信道的A/V/PCRPID并进行多重化处理的过程为404 步骤。 In said channel conversion engine 115, the information and stores the PAT / PMT in the resolved to the channel graph that the information to channel the stored graphic information is based on controlling the tuner 111 and the multiplex processing means 116, adjusting the user during step 401 to select a channel of a / V / PCRPID and multiplexing process step 404.

另外,在上述402步骤中,如果判断结果是信道转换时物理信道没有转换,上述物理信道的信道图表信息已经在信道变换引擎115中构成并存储。 In the above step 402, if the determination result is a channel conversion is not converted physical channel, a physical channel above the channel information has transformed graph engine 115 and stored in the channel configuration. 所以, 此时以没有解析的已存信道图表信息为基础,控制调谐器111和多重化处理装置116,调整用户在401步骤中选择的信道的A/V/PCR PID并进行多重化处理的过程为405步骤。 Process Therefore, at this time in order not resolve the saved channel chart based on the information, control the tuner 111 and the multiplex processing means 116, the adjustment selected by the user in step 401 in channel A / V / PCR PID and a multiplexing unit 405 steps.

【发明内容】 [SUMMARY]

因此,本发明的目的是提供一种数字电缆广播接收机内的信道转换方法。 Accordingly, an object of the present invention is a method of converting a channel within a digital cable broadcast receiver. 如上所述,信道转换时物理信道也随之转换,此时如果在物理信道内多个信道的情况下,对上述多个信道都进行解析。 As described above, the channel also will transform the physical channel conversion, if at this time in the case where a plurality of channels within the physical channel, the plurality of channels are to be resolved. 所以,在这种情况下进行的信道转换存在需要较长时间的缺点。 Therefore, channel conversion in this case takes a long time shortcomings. 特别是,对物理信道内存在越来越多的信道进行信道转换需要大量的时间。 In particular, the physical channel memory for a growing number of channels of the channel conversion requires a lot of time.

另外,在信道转换时,在物理信道没有随之转换的情况下,由于信道图表信息已经存在,所以对没有解析的信道也可以进行转换。 Further, when the channel switching, in a case where the physical channel conversion will not, since the channel Chart already, so no analytical channel conversion can be performed. 同时,由于每个物理信道内存在的信道都不相同,所以在信道变换时物理信道也变换的情况下,根据物理信道内存在的信道,信道转换时间也随之变化。 Meanwhile, since each physical channel memory channel are not the same, so the case when the physical channel conversion channel is also transformed, in accordance with the physical channel memory the channel, the channel switching time also changes. 因此,这种转换方法对有的信道能够快速地进行信道转换,有的信道转换就非常的缓慢,同时还存在信道转换时间没有一贯性的缺点。 Thus, the conversion method can be performed on any channel rapid channel switching, some channel switching is very slow, while there is no channel switching time consistency of drawbacks.

本发明为了解决上述问题而研究开发的数字电缆广播接收机内的信道转换方法。 The present invention is to solve the above problems, research channel changing method in a digital cable broadcast receiver development. 主要目的是为了提供一种,在开放电缆机顶盒内能够快速进行信道转换的方法。 The main purpose is to provide a possible method for fast channel switching in an open cable set-top box.

本发明的另外一个目的是为了提供一种,为了使在开放电缆机顶盒内根据物理信道变换的信道转换时间和依据仅变换预置信道的信道转换时间相同的方法。 Another object of the present invention is to provide an order for the conversion time basis and in an open cable set-top box according to the channel physical channel conversion method preset channel channel switching time only the same transformation.

为了实现上述目的,依据本发明的数字电缆广播接收机内的信道转换方法,主要有以下步骤特征。 To achieve the above object, according to the channel changing method in a digital cable broadcast receiver according to the present invention, mainly characterized in the following steps.

(a) 如果根据用户选择信道转换,解析转换的预置信道的SVCT后提取信 (A) If the user selects a channel conversion, analysis and conversion of the preset channel extraction channel SVCT

道信息的步骤; Step channel information;

(b) 只解析与上述信道信息中节目番号相匹配的一个PAT/?MT,然后提取节目信息的步骤;(c)以上述提取的信道和节目信息为基础,对在上述(a)步骤内选择的信道的节目进行调整和解码,并在画面中显示的步骤。 ? (B) only parsing a PAT and the channel information and the program designation match / MT, and extracting program information in step; (c) in the extracted channel and program information based on the in step (a) above selected channel and a program adjusting decoding step and displayed on the screen. 上述步骤是数字电缆广播接收机内的信道转换方法的主要特征。 The above steps are the main features of the method of converting a channel of digital cable broadcast receiver.

依据本发明的其它实施例,数字电缆广播接收机的信道转换方法主要包括以下步骤。 Accordance with other embodiments of the invention, the method of converting a channel of digital cable broadcast receiver includes the following steps.

(a) 如果依据用户选择信道转换,解析转换的预置信道后提取信道的SVCT 的步骤; (A) If the user selects a channel based on the conversion, after extraction channel preset channel switching step of parsing SVCT;

(b) 只解析与上述信道信息匹配的一个PAT/PMT,然后提取节目信息的步 (B) only resolve the above-described channel information matches a PAT / PMT, the program information extraction step then

骤; Sudden;

(c) 以上述提取的信道和节目信息为基础,构成节目表信息后存储。 (C) in the channel and the extracted program information based on constituting the program table information is stored. 同时,以上述节目表信息为基础,对在上述(a)中选择的信道节目进行解析和解码,并在画面中显示的步骤; Meanwhile, the above program table information based on the selection in the above (a) in the channel program for parsing and decoding, and the step of displaying on a screen;

(d) 在上述(c)步骤中存储的信道图表信息中,如果进行信道转换,以上述信道图表内的信道和节目信息为基础,对相关节目进行解析和调整后输出,相关节目不能在画面中看到的步骤; (D) stored in said step (c) a channel chart information, if the channel switching, for later channels and programs in the channel chart based on the information on the related program parses and adjust the output, the related program can not screen see step;

(e) 只解析与从上述(d)步骤和同时存储的信道图表信息开始读取的相关预置信道的节目番号相匹配的PAT/PMT,判断提取节目信息与存储的节目信息是否一致的步骤; (E) only parses the program designation charts preset channel information to start reading from said step (d) and channels simultaneously stored matches PAT / PMT, determining whether the program information extracting program information stored in the same step ;

(f) 在上述(e)步骤,判断结果如果是两个节目信息一致,在上述(d) 步骤内解码后的节目,将出现在画面中的显示步骤; (F) In the step (e), if the determination result is consistent with two program information, the program decoded in said step (d), the step of displaying on the screen will appear;

(g) 在上述(e)步骤中,判断结果如果是两个节目不一致,以在上述(e) 步骤中解析后的节目信息为基础,重新对相关信道节目进行调整和解码后在画面中显示的步骤。 (G) In the step (e), it is determined if the result of two programs are inconsistent to the program information analysis in the above step (e) as the basis, re-correlation channel program to be adjusted and the decoded displayed on the screen A step of. 上述步骤是数字电缆广播接收机的信道转换方法的主要特征。 The above steps are main features of a digital cable channel changing method of the broadcast receiver.

本发明的其它目的、特征和优点,请参照附图实施例的详细说明,以便更好地理解该技术。 Other objects, features and advantages of the present invention, please refer to the detailed description of the accompanying drawings, for better understanding of the technology.

如上所述,本发明是为了提供一种在数字电缆广播接收机内的信道转换方法。 As described above, the present invention is to provide a channel changing method in a digital cable broadcast receiver. 信道转换时,只解析与相关预置信道的SVCT内叙述程序编号(program—number)相匹配的一个PAT/PMT后,以该解析信息为基础,对相关信道的节目进行调整和解码处理后进行显示。 After the channel conversion, only resolved with the relevant preset channel SVCT described in a PAT program number (program-number) matches / PMT, to the analysis information, based on the associated channel programs to be adjusted and the decoding process display. 因此,依据本发明信道转换时, 即使物理信道变换,也能够减少信道转换时间。 Thus, according to the present invention, the channel conversion, even if the physical channel conversion, it is possible to reduce the channel switching time. 另外,信道转换时,因为只解析物理信道变换或不变换的一个FAT/PMT,所以任何信道转换其信道转换时间几乎相同。 Further, when the channel is switched, because only parse a FAT / PMT physical channel conversion or transformation, any channel so that the channel transition time converter which is almost the same.

【附图说明】 BRIEF DESCRIPTION

图l表示一般的开放电缆方式的数字光缆广播接收机的构成示意图。 Figure l shows the configuration of the digital cable broadcast receiver generally open cable mode. 图2表示一般的SVCT比特流构成示意图。 Figure 2 shows a general schematic configuration bitstream SVCT. 图3表示一般的PAT比特流构造示意图。 Figure 3 shows a general configuration diagram PAT bitstream.

图4表示过去的数字电缆广播接收机内的信道转换方法的实施例操作流程示意图。 FIG 4 shows an embodiment of operation flow in the channel changing method of past digital cable broadcast receiver. FIG.

图5表示依据本发明的数字电缆广播接收机内的信道转换方法的实施例操作流程示意图。 Figure 5 shows the operational flow diagram of an embodiment according to the channel conversion method in a digital cable broadcast receiver according to the present invention.

【具体实施方式】 【detailed description】

下面将参照附图对本发明的数字电缆广播接收机内的信道转换方法的实施例进行详细说明。 THE DRAWINGS Example embodiments of the channel changing method in a digital cable broadcast receiver according to the present invention will be described in detail. 数字电缆广播接收机内的信道转换方法具有下述特征。 Channel changing method in a digital cable broadcast receiver has the following characteristics.

依据本发明在进行信道转换时,与物理信道的变换与否没有关系;解析同相关预置信道SVCT内的节目番号相匹配的一个PAT/PMT,以构成的信道图表信息和这个信道图表信息为基础,对相关信道进行调整和解码处理,并进行显示的特征。 According to the present invention is performed when the channel switching, the physical channel conversion or not does not matter; a PAT parsing program designation within the same correlation preset channel SVCT match / PMT, to channel Chart and the channel Chart configured for basis, adjusted for the relevant channel and decoding processing, and display features.

艮口,进行信道转换时,所需要的节目番号已经进入图的SVCT,使用PSI进行传输,如果只解析所需的一个PAT/PMT,所以任何信道在进行信道转换时的 When the Burgundy port, channel conversion, the desired program has entered the designation of an SVCT FIG, using PSI transmission, if only parsing a PAT / PMT desired, any channel so that channel switching is performed

解析时间几乎相同。 Almost the same resolution time.

解析一个物理信道频率内存储的所有的预置信道和各预置信道的PAT和上述PAT内定义的PMT的时候,要求其所需时间必须减少。 Parsing the PAT stores a physical channel frequency of all and each of the preset channel preset channel defined within the above-described PAT and the PMT when the requirements which must reduce the time required. 另外,信道转换时, 物理信道与随之变化或不变化,由于只解析一个PAT/PMT,所以任何信道进行转换的转换时间几乎相同。 Further, when the channel is switched, along with the physical channel or may not vary, since only parse a PAT / PMT, so that any channel for the conversion time is almost the same.

图5表示,依据本发明的信道转换方法的操作实施例流程示意图。 5 shows a flow schematic diagram of the method according to the channel conversion operation of the embodiment of the present invention. 该操作流程有以下几个步骤,如果对用户特定视听的节目进行转换,,预置信道变换为 This operation has the following process steps, if the user is viewing a particular program channel conversion is converted into a preset ,,

第501步骤;那么,信道变换引擎115通过SI解析装置114,解析相关预置信道的SVCT,然后提取节目番号为502步骤;使用PSI解析装置119输出该节目番号。 The first step 501; then, by channel conversion engine 115 SVCT SI parsing unit 114, parses relevant preset channel, and then extracting program 502 is a designation step; PSI parsing unit 119 using the output of the program designation. 上述PSI解析装置119只解析与上述SVCT的程序编号(program—number) 相匹配的一个PAT/PMT,提取节目信息后,使用信道转换引擎装置115输出。 After the above PSI parsing unit 119 parses the above SVCT program number (program-number) matches a PAT / PMT, extracts the program information, channel switching engine 115 using the output device. 上述信道交换引擎装置115,使用在SI解析装置114中提取的信道信息和从PSI解析装置中提取的节目信息构成信道图表信息并进行存储的过程为503步骤。 Said channel switching engine 115, using SI analyzer 114 extracts channel information extracted from the PSI analyzing device constituting the program information and channel information stored in the chart for the process step 503.

图3表示,构成一般的PAT比特流的示意图。 3 shows a schematic view of a general configuration PAT bit stream. 图表识别符(table—id)由8比特构成,在ISO和ETSI中定义图表识别符(table—id)的值。 Chart identifier (table-id) is constituted by 8 bits, defined identifier value graph (table-id) in the ISO and ETSI. Section—syntax—indicator可以在MPEG-2系统规格的PSI内互换,为表示相关区域的长度而使用section—length。 Section-syntax-indicator can be interchanged in the MPEG-2 systems specification PSI, indicates the length of the relevant area is used section-length.

另外,节目介绍或服务信息,速成像的相关内容只能根据时间进行变更。 In addition, the program describes the content or service information, like crash can only be changed in accordance with time. 即,节目在放映时的时间也随之跟着变化,由于必须对其它节目内容进行介绍, 所以必须传送新的翻译程序服务信息。 That is, the program also will be followed by changes in the time when the show, due to be introduced to other program content, it is necessary to send a new translation program service information. 即,为了知道前面传送的服务信息或节目介绍信息和其它内容,使用版本号(version—number)。 That is, in order to know the foregoing information or program service transmission and other content description information, a version number (version-number). Current—next—indicator将出现传送的内容正是当前适用的内容或正是下一次适用的内容。 Current-next-indicator will appear content is the content delivery under the currently applicable or content once it is applied. Section—number出现区域番号,数字电缆广播接收机接收的图表,利用区域番号按照一定的顺序能够进行再整理。 Chart area designation, the digital cable broadcast receiver receives the Section-number occurs by area designation according to a certain order can be re-finishing. Last—section—number出现当前图表的最后区域的番号。 The current designation last area of ​​the chart Last-section-number appears.

此时上述PAT的'for'使用回路的反复文为了叙述程序编号(program—誦ber)和PMT的PID(program一raap—PID)而使用。 At this time, the above-described PAT 'for' loop is repeated using the herein described to the program number (Program- chant BER) and the PMT PID (program a raap-PID) was used. 上述'for,回路的反复次数(N)与上述PAT内相对应的PMT的数一致。 'For the number of matches described above, the number of repetitions of the loop (N) and the corresponding PMT PAT above.

因此,解析与上述SVCT的程序编号(program—number)相匹配的PAT,上述PAT中解析重新与上述程序编号(program—number)相匹配的program—map_PID的PMT,然后提取节目信息。 Thus, the above-described SVCT parsing program number (program-number) matches the PAT, the PAT above PMT program-map_PID resolve the above-described re-program number (program-number) matches, then extracted program information.

另外,上述信道变换引擎装置115,从SI解析装置114和PSI解析装置119中提取的各信道信息和节目信息构成了信道图表信息;在存储的同时,以信道图表信息为基础,控制调谐器111和多重化处理装置116;用户在501步骤中,对选择的信道的A/VPCR PID进行调整和多重化处理的过程为504步骤。 Further, the channel conversion engine unit 115, analysis unit 114 and the PSI parsing unit 119 extracts the respective channel information and program information constituting the channel chart information from the SI; while stored, to the channel chart based on the information, control the tuner 111 and multiplexing processing apparatus 116; the user during step 501, a channel selection / VPCR PID adjustment process and the multiplexing step 504.

所以,依据本发明,信道转换时物理信道变换或不变换,在使用几乎相同的速度进行信道转换的同时,可以进行快速的信道转换。 Therefore, according to the present invention, when the channel is switched physical channel conversion or not conversion, while using almost the same speed channel switching, a channel can be quickly converted.

接下来,用户使用在上述信道图表信息中的信道进行转换的情况下,重新解析相关预置信道的SVCT,提取信道信息和程序编号(program—number)后, 在PSI装置H9中,只解析与上述程序编号(program—number)相匹配的一个PAT/PMT,能够得到所需信道A/V/PCR PID。 Next, after the user in a case where the channel conversion charts information channel, reparsed SVCT associated preset channel, extracting channel information and the program number (program-number), the PSI means H9, parsing only with the above-described program number (program-number) matches a PAT / PMT, the desired channel can be obtained a / V / PCR PID.

在其它实施例中,用户使用在上述信道图表信息中的信道进行转换的情况下,代替不能解析的相关预置信道的SVCT,使用PSI解析装置输出在已经存储的信道图表信息中的相关预置信道的program—number,解析与上述程序编号(program—number)相匹配的一个PAT/PMT,然后输出节目信息。 In the case of other embodiments, the user channel in said channel Chart of converting the place can not be resolved related preset channel an SVCT, using means outputs PSI parsing relevant preset already stored channel Chart of channel program-number, the above analytical program number (program-number) matches a PAT / PMT, and then outputs the program information. 接下来对提取的节目信息和已存储的信道图表信息的节目信息的值进行比较。 Next, the value of the extracted program information and program channel information stored in the graphic information is compared. 同时,利用已经存储的信道图表信息,对相关信道的节目进行调整和解码处理后,如果在画面中显示,画面中不能看到上述节目。 At the same time, the use of already stored graphic information channel, the channel correlation adjustment program and decoding processing, if displayed on the screen, the screen can not be seen in the above program. 即,画面处于黑色状态或画面内使用了特定模式。 That is, the screen is used within a particular mode state or a black screen.

此时,在上述PSI装置119中,判断结果如果是新解析提取的节目信息和已存储的节目信息一致,根据已存储的信道图表信息进行调整和解码处理后, 在显示的节目画面中可以正常看到。 In this case, in the PSI apparatus 119, if the determination result is a new parsing the extracted program information and the program information stored in the same, the graphic information is adjusted and decoding processing according to the channel stored in the program displayed on the screen in normal see.

另外,判断结果如果是两个节目信息不一致,以新解析的信息为基础,对相关信道的节目进行调整和解码处理后,出现在显示的画面中。 Further, if the determination result is inconsistent with two program information, to parse the new information based on the associated channel and to adjust the program decoding processing, it appears on the displayed screen. 同时,使用上述解析的信息更新并存储信道图表信息。 Meanwhile, the information is parsed using the updates and stores channel Chart.

那么,AA/PCR PID在实际广播时几乎不进行转换,所以如果利用上述后者的方法,能够节约SI解析时间。 Then, AA / PCR PID conversion hardly proceeds in the actual broadcast, so if using the latter method, the analysis time can be saved SI. 这样一来,信道转换速度就会更快。 Thus, the channel switching speed will be faster.

另外,在本发明的数字电缆广播接收机内的信道转换方法中,对P0D分离的开放电缆机顶盒,虽然以实施例进行了详细说明,但是在其它实施例中,P0D 即使是合并机顶盒后的数字电缆广播接收机也同样适用本发明。 Further, the channel changing method in a digital cable broadcast receiver according to the present invention, the on P0D isolated open cable set-top box, although embodiments have been described in detail, but in other embodiments, P0D even merged digital set-top box cable broadcast receiver of the present invention is also applicable.

另外,在本发明中使用的用语(terminology)是考虑到本发明的功能后定义的用语,这是根据在不同领域内从事技术的人员的意图或根据相关科技知识,以从本发明的全盘考虑过的内容作为基础而定义的用语。 In addition, in the present invention, the term (Terminology) are terms defined taking into account the function of the present invention, which is intended to personnel engaged art in different areas according to or in accordance with the relevant scientific and technological knowledge, a holistic consideration of the present invention from content basis over a defined term.

通过上述的说明内容,相关工作人员完全可以在不偏离本项发明技术思想的范围内,进行多样的变更以及修改。 The contents of the above description, the relevant staff can without departing from the scope of the technical ideas of the present inventions, a variety of changes and modifications.

因此,本项发明的技术性范围并不局限于说明书上的内容,必须要根据权 Accordingly, the technical scope of the present invention is not limited to the content item on the instructions, according to the weights must be

利范围来确定其技术性范围。 Lee range to determine its technical scope.

通过上述的说明内容,相关工作人员完全可以在不偏离本项发明技术思想的范围内,进行多样的变更以及修改。 The contents of the above description, the relevant staff can without departing from the scope of the technical ideas of the present inventions, a variety of changes and modifications.

因此,本项发明的技术性范围并不局限于说明书上的内容,必须要根据权利范围来确定其技术性范围。 Accordingly, the technical scope of the present invention is not limited to the content item on the instructions, which must be determined in accordance with the scope of the technical scope of the claim.

Claims (6)

  1. 1、在数字电缆广播接收机内的信道转换方法,所述方法是在一个物理信道内最少有一个以上的信道,接收信道和节目介绍信息的数字电缆广播接收机的信道转换方法,主要包括以下几个步骤: (a)如果依据用户选择信道转换,解析转换的简洁格式虚拟信道表后,提取信道信息的步骤; (b)解析与在上述信道信息中节目番号相匹配的一个程序群丛表/程序映射表,提取节目信息的步骤; (c)以上述提取的信道和节目信息为基础,对在上述(a)中选择的信道的节目进行调整和解码处理后,画面显示的步骤。 1, channel changing method in a digital cable broadcast receiver, the method is in a physical channel least more than one channel, the reception channel and a program presentation channel switching method for a digital cable broadcast receiver of information, including the following several steps: (a) if the conversion according to the user selects a channel, parses simple format conversion of the virtual channel table, extracting channel information; (b) Analysis and a program in the channel information and the program designation that matches the associations table / program map table, extracting program information; a step (c) after the above extraction channel and program information based on the selection in the above (a) channel programs to be adjusted and the decoding process, the step screen display.
  2. 2、 如权利要求项1所述的在数字电缆广播接收机内的信道转换方法,其特征在于,上述数字电缆广播接收机,在配置点模块中分离的开放电缆方式的情况下,在上述(a)步骤中,在通过简洁格式虚拟信道表带外和配置点模块接收的系统信息中进行解析的过程也是在数字电缆广播接收机内的信道转换方法的另一特征。 2, channel items as claimed in claim 1 in a method of converting the digital cable broadcast receiver, characterized in that, the digital cable broadcast receiver, in the case where the separation point of the module configuration of an open cable mode in the above ( process step a), analyzing the received virtual channel, and an outer strap configuration module via simple point format to another feature of the system information is also channel switching method in a digital cable broadcast receiver.
  3. 3、 如权利要求项1所述的在数字电缆广播接收机内的信道转换方法, 其特征在于,上述数字电缆广播接收机在配置点模块中分离开放电缆方式的情况下,在上述(b)步骤中,在程序群丛表/程序映射表通过带内接收的程序特定信息中进行解析。 3, the channel conversion method as claimed in digital cable broadcast receiver according to claim 1, characterized in that in case the digital cable broadcast receiver in the embodiment Open Cable separation point configuration module, in (b) above step, analyzing the program association table program group specific information / program map table received via in-band.
  4. 4、 如权利要求项2或3所述的在数字电缆广播接收机内的信道转换方法, 其特征在于,在上述(c)步骤中还包括:(c-1)使用上述提取的信道和节目信息构成信道了图表信息并进行存储;(C-2)接下来,如果对上述存储的信道图表信息中的信道进行转换,以上述信道图表信息中的信道和节目信息为基础,对相关信道的节目进行调整和解码处理后输出,在画面中不能看到相关节目;(C-3)在上述(C-2)步骤和同时存储的信道图表信息开始时,只解析与读取的相关预置信道的节目番号相匹配的一个程序群丛表/程序映射表,提取节目存储信息后与已存储的节目信息进行比较,判断其是否一致;(C-4)在上述(C-3)步骤中,判断结果如果是两个节目信息一致,在上述(C-2)步骤中解码处理后的节目在显示画面中可以看到的步骤;(c-5)在上述(c-3)步骤中,判断结果如果是两个 Channel changing method in a digital cable broadcast receiver as claimed in item in claim 2 or claim 3, wherein, in the step (c) further comprises: a channel and a program (c-1) by using the extracted information constituting the channel chart information and storing; (C-2) Next, if the channel to the memory graph channel information is converted to said channel chart in the channel and program information based on the associated channel after the adjustment program and outputs the decoding process, can not be seen in the picture related programs; (C-3) information start time chart, and parsing the read only above a preset correlation (C-2) the step of simultaneously and stored in a channel compares the program information stored after a program channel program designation matches associations table / program map table, extracts the program information stored, determines whether it is consistent; (C-4) in (C-3) step of the above , if the judgment result is consistent with two program information, a program step in the decoding process (C-2) in the above step in the display can be seen; (c-5) in (c-3) in the above step, If the determination result is two 目信息不一致,在上述(c-3)的步骤中,以解析后的节目信息为基础,对相关信道的节目进行调整和解码处理后,在显示画面中显示。 Program information is inconsistent in the step (c-3) above, the analysis information to the program based on the associated channel and to adjust the program decoding processing, displayed on the display screen.
  5. 5、在数字电缆广播接收机内的信道转换方法,所述方法是在一个物理信道内至少有一个以上的预置信道存在,接收信道和节目介绍信息的数字电缆广播接收机的转换方法,包括:(a) 如果依据用户选择信道转换,解析预置信道的简洁格式虚拟信道表后,提取信道信息的步骤;(b) 只解析与上述信道信息中节目番号和相匹配的一个程序群丛表/程序映射表后,提取节目信息的步骤;(C)使用上述提取的信道和节目信息构成节目表信息并进行存储,同时以上述节目表信息为基础,对在上述(a)步骤中选择的信道的节目进行调整和解码处理,并在画面中显示的步骤;(d) 接下来,在上述(c)步骤中存储的信道图表信息中的信道,如果进行转换,以上述信道图表信息中的信道和节目信息为基础,对相关信道的节目对调整和解码处理后输出,不能在画面中看到相关节 5, channel changing method in a digital cable broadcast receiver, the method is in a physical channel has at least one preset channel is present, the reception channel and a program description conversion method for a digital cable broadcast receiver of information, comprising : after (a) if the conversion according to the user selects a channel, parsing preset channel simple format virtual channel table, extracting channel information; (b) only resolved with the channel information and the program designation and a program that matches the associations table after / program map table, the step of the program information extracted; (C) using the extracted channel and program information constituting the program table information and stored, while in the above program table information based on the selection in the above step (a) is channel program to adjust and decoding processing, and the step of displaying in a screen; (d) Next, the storage in the above step (c) a channel graph channel information, if the conversion to said channel chart of channel and program information based on the associated channel and decoding processing programs adjusted outputs, can not see the relevant section in the picture 的步骤;(e) 在上述(d)同时从存储的信道图表信息开始,只解析与读出的相关预置信道的节目番号相匹配的一个程序群丛表/程序映射表,提取节目信息后,判断该信息是否与已存储的节目信息相一致的步骤;(f) 在上述(e)步骤中,判断结果如果是两个节目信息一致,在上述(d)步骤中经过解码处理后的节目可以在显示画面中看到的步骤;(g)在上述(e)步骤中,判断结果如果是两个节目信息不一致,在上述(e)步骤中,以新解析的节目信息为基础,对相关信道的节目进行调整和解码处理后,在画面中显示的步骤。 Step; a program (e) in (d) above while the chart information from the stored channel starts, only parsing the read program designation associated preset channel matched associations Table / Program Map Table, extracts the program information determining whether the information coincides with the program information stored in step; (f) in the step (e), it is determined if the results are consistent with two program information, a program after the decoding process in the above step (d) of step can be seen in the display screen; (G) in the above step (e), it is determined if the result of two programs are inconsistent information in the above step (e) in order to resolve the new program information based on the relevant after adjusting the channel program and decoding processing steps shown on the screen.
  6. 6、如权利要求项5所述的在数字电缆广播接收机内的信道转换方法,其特征在于,在上述(g)步骤中,判断结果为两个节目信息不一致时,在上述(e)步骤中,使用解析的节目图表信息更新信道图表信息后并存储。 6, as claimed in item 5 of the channel changing method in a digital cable broadcast receiver, characterized in that, in the step (g), the determination result is inconsistent with two program information in the above step (e) using chart parsing program update channel information and store the chart.
CN 200510030223 2005-09-29 2005-09-29 Channel conversion in digital cable set-top box CN100574366C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200510030223 CN100574366C (en) 2005-09-29 2005-09-29 Channel conversion in digital cable set-top box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200510030223 CN100574366C (en) 2005-09-29 2005-09-29 Channel conversion in digital cable set-top box

Publications (2)

Publication Number Publication Date
CN1941845A true CN1941845A (en) 2007-04-04
CN100574366C true CN100574366C (en) 2009-12-23

Family

ID=37959588

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200510030223 CN100574366C (en) 2005-09-29 2005-09-29 Channel conversion in digital cable set-top box

Country Status (1)

Country Link
CN (1) CN100574366C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101202877B (en) 2007-07-25 2010-05-26 深圳市同洲电子股份有限公司 Set-top box and method and apparatus for program switch

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990085286A (en) 1998-05-15 1999-12-06 구자홍 How to change the digital TV channel information
JP2005045819A (en) 2003-07-25 2005-02-17 Lg Electron Inc Apparatus and method for transmitting/receiving information for dmb service
CN1647499A (en) 2002-04-08 2005-07-27 汤姆森许可公司 Apparatus and method for data caching to reduce channel change times

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990085286A (en) 1998-05-15 1999-12-06 구자홍 How to change the digital TV channel information
CN1647499A (en) 2002-04-08 2005-07-27 汤姆森许可公司 Apparatus and method for data caching to reduce channel change times
JP2005045819A (en) 2003-07-25 2005-02-17 Lg Electron Inc Apparatus and method for transmitting/receiving information for dmb service

Also Published As

Publication number Publication date Type
CN1941845A (en) 2007-04-04 application

Similar Documents

Publication Publication Date Title
US5638112A (en) Hybrid analog/digital STB
US6937618B1 (en) Separating device and method and signal receiving device and method
US7434245B1 (en) Electronic program guide system using images of reduced size to identify respective programs
US5600378A (en) Logical and composite channel mapping in an MPEG network
US6215530B1 (en) Logical and composite channel mapping in an MPEG network
US6549243B1 (en) Digital broadcast receiver unit
US6556251B1 (en) Apparatus and method for receiving and combining digital broadcast data with an analog composite signal
US20060015916A1 (en) Emergency alert message data structure, emergency alert message processing method and broadcast receiver
US20010028782A1 (en) Receiving apparatus and control method therefor
US6985530B1 (en) Integrated receiver decoder and method for simultaneously transmitting compressed and uncompressed signals
US5894320A (en) Multi-channel television system with viewer-selectable video and audio
US20020067436A1 (en) Information-processing device
US6700624B2 (en) Combined terrestrial wave/cable broadcast receiver and program information processing method therefor
US20060130110A1 (en) Apparatus for receiving MPEG-2 A/V data using cable modem
US20070146542A1 (en) Method and apparatus for using the host-pod interface of a digital television or other digital audio/video receiver for new services
US5973685A (en) Scheme for the distribution of multimedia follow-up information
US20070130610A1 (en) Combined receiver for DVB-H and DVB-T transmission
US6369861B1 (en) Program selection system for a digital television receiver
US6779195B2 (en) Signal processing apparatus and signal receiving apparatus
US20040111746A1 (en) IP to DVB subchannel mapping
JPH0937181A (en) Device and method for controlling electronic program guide display
US20030046713A1 (en) Simplified digital settop box
US20090100475A1 (en) Mobile tv system architecture for mobile terminals
JP2000013696A (en) Digital broadcasting receiver, its channel selecting method and data transmitting method
US20070288960A1 (en) Receiving apparatus

Legal Events

Date Code Title Description
C06 Publication
C10 Entry into substantive examination
C14 Grant of patent or utility model
EXPY Termination of patent right or utility model