CN101087375A - 用于启用双dmb的移动电话的多频道扫描设备和方法 - Google Patents
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Abstract
提供一种用于启用DMB的移动电话的多频道扫描设备和方法,所述移动电话能够同时显示通过卫星和陆地数字多媒体广播系统的不同服务频道接收的多个图像。本发明的多频道扫描方法包括:确定第一和第二广播系统的功能;设置多画面显示功能,其用于在屏幕上显示第一和第二广播系统的至少两个广播频道;以及同时将广播频道之一显示为主频道,并将除主频道之外的至少一个广播频道显示为子频道。
Description
技术领域
本发明涉及一种用于启用数字多媒体广播(DMB)的移动电话,特别地,涉及一种用于启用DMB的移动电话的多频道扫描设备和方法,所述移动电话能够在画中画显示中,同时显示通过卫星和陆地DMB系统的不同服务频道接收的多幅图片。
背景技术
DMB是一种数字传输系统,它用于在移动中传递多媒体内容和服务。DMB基于数字音频广播(DAB)标准,该标准是为移动DMB接收机发送数字音频、视频和多媒体流而修订的。DMB使人们能够经由诸如移动电话的DMB专用终端的手持设备,在路上享受清晰的视频、压缩盘(CD)质量的音频和数据。可将多数视频和音频频道提供给DMB服务,具有无向天线的DMB接收机可接收所述DMB服务。
DMB有两种类型:陆地DMB(T-DMB)和卫星DMB(S-DMB)。T-DMB和S-DMB两者在多媒体广播的移动接收方面大致相等。
它们之间的区别是T-DMB工作在仅仅通过陆地广播站所建立的网络,而S-DMB利用通过卫星和缝隙填充器建立的网络,其提供内部建立的覆盖区。另一个区别是T-DMB分配在甚高频(VHF)频带,而S-DMB分配在超高频(UHF)频带(2.6到2.655GHz)。
最近,已经研发了支持S-DMB和T-DMB两者的双DMB电话。然而,传统的双DMB电话无法允许同时观看S-DMB和T-DMB频道。
发明内容
本发明致力于解决上述问题,本发明的一方面在于提供一种用于启用DMB的移动电话的多频道扫描设备和方法,所述移动电话能够同时显示在T-DMB和S-DMB系统的服务频道上接收的多幅图像。
本发明的另一方面在于提供一种用于启用DMB的移动电话的多频道扫描设备和方法,所述移动电话能够同时显示在T-DMB和S-DMB系统之一的多个频道上接收的多幅图像。
本发明的另一方面在于提供一种用于启用DMB的移动电话的多频道扫描设备和方法,所述移动电话能够同时显示T-DMB和S-DMB频道的多幅图像,作为PIP功能的主画面和至少一个子画面。
根据本发明的一方面,通过用于启用双广播系统的移动电话的多频道扫描方法来实现上述和其他方面。多频道扫描方法包括:检查第一和第二广播系统的功能;设置多画面显示功能,其用于在屏幕上显示至少两个第一和第二广播系统的广播频道;以及同时将所述广播频道之一显示为主频道画面并将除主频道之外的至少一个广播频道显示为子频道画面。
根据本发明的另一方面,通过用于启用双广播系统的移动电话的多频道扫描设备来实现上述和其他方面。多频道扫描设备包括:操作监控器,用于监控第一和第二广播系统的操作;多画面显示设置器,用于设置屏幕上多个画面的同时显示;显示器,用于同时将广播频道之一显示为主频道画面并将除了主频道之外的至少一个广播频道显示为子频道画面。
根据本发明的另一方面,通过用于启用双广播系统的移动电话的多频道扫描设备来实现上述和其他方面。多频道扫描设备包括:卫星DMB(S-DMB)接收器,用于接收S-DMB频道;陆地DMB(T-DMB)接收器,用于接收T-DMB频道;音频处理单元,用于处理S-DMB和T-DMB频道的音频信号;显示器,用于显示多个DMB频道画面;视频处理单元,用于处理多个DMB频道以便输出主画面和子画面作为画中画(PIP);以及控制器用于控制S-DMB接收器、T-DMB接收器、音频处理单元和视频处理单元之间的协作,以在显示器上同时显示主画面和子画面。
根据本发明的另一方面,通过用于启用双广播系统的移动电话的多频道扫描方法来实现上述和其他方面,所述移动电话支持卫星DMB(S-DMB)和陆地DMB(T-DMB)。该多频道扫描方法包括:确定是否设置了主频道和子频道;如果未设置主频道和子频道,则为主频道画面和子频道画面,从S-DMB和T-DMB频道中选择主频道和至少一个子频道;通过建立TV输出信号,显示主频道画面和子频道画面;确定在显示主频道和子频道的同时,是否接收到来电呼叫;如果接收到来电呼叫,则将来电呼叫相关信息显示为主频道画面;以及将主频道显示在子频道画面。
附图说明
通过下面结合附图进行的详细描述,本发明的上述和其他目的、特点和优点将会变得更加清楚,其中:
图1是示出根据本发明的启用DMB的移动电话的框图;
图2是示出根据本发明的多频道扫描方法的双DMB多频道扫描过程的流程图;以及
图3是示出根据本发明的多频道扫描方法的单DMB多频道扫描过程的流程图。
具体实施方式
以下,参照附图来详细说明本发明的优选实施例。在整个附图中,相同的标号用来指示相同或相似的部分。可省略包含于此的公知功能和结构的详细描述,以避免模糊本发明的主题。
图1是示出根据本发明的启用DMB的移动电话的框图。
参照图1,根据本发明的启用DMB的移动电话利用射频(RF)单元121,通过无线电天线101来执行通信。实现S-DMB天线100以接收S-DMB频带中的广播信号,实现T-DMB天线105以接收T-DMB频带中的广播信号。
启用DMB的移动电话包括S-DMB部分和T-DMB部分。
S-DMB部分包括:S-DMB调谐器141、S-DMB处理器150和S-DMB编解码器160。
S-DMB调谐器141允许通过S-DMB天线100来接收多个S-DMB频道的S-DMB信号,并执行S-DMB信号的频率变换。S-DMB调谐器141可由集成电路(IC)来实现,所述电路用于将S-DMB信号频率下变换为中频信号。
S-DMB处理器150对S-DMB信号执行解调和解码。按频道对接收到的S-DMB信号进行解码,解码的S-DMB信号被存储在第一存储器120中。
S-DMB编解码器160在控制器110的控制下对从S-DMB处理器150分别输出的视频和音频信号进行解码。
从S-DMB编解码器160输出的解码的音频信号,由音频处理单元125处理后通过扬声器输出,由视频处理单元170处理从S-DMB编解码器160输出的解码的视频信号,以通过显示器180输出。
在该实施例中,视频处理单元170包括PIP处理器171,其处理通过多频道接收的S-DMB视频信号,以在显示器180上同时将其显示为多个画面或PIP功能的主画面和至少一个子画面。音频处理单元125选择性地输出与主频道和子频道之一相关的音频信号。
T-DMB部分包括T-DMB调谐器142、T-DMB处理器151和T-DMB编解码器161。
T-DMB调谐器142允许通过T-DMB天线105接收多个T-DMB频道的T-DMB信号,并执行T-DMB信号的频率变换。T-DMB调谐器142可由IC来实现,所述IC将T-DMB信号频率下变换为38MHz或2MHz频带的中频信号。
T-DMB处理器151在控制器110的控制下对T-DMB信号执行解调和解码,并将解码的信号存储在第一存储器120中。
T-DMB编解码器161在控制器110的控制下对从T-DMB处理器151分别输出的视频和音频信号进行解码。
T-DMB视频信号可被视频处理单元170的PIP处理器171处理,以作为PIP的主画面或子画面连同从音频处理单元125输出的音频声音共同输出。
键盘127设置有用于启用多画面模式或PIP模式,并为主画面和子画面选择频道的功能键。
图2是示出根据本发明的多频道扫描方法的双DMB多频道扫描过程的流程图,图3是示出根据本发明的多频道扫描方法的单DMB多频道扫描过程的流程图。
双DMB(S-DMB和T-DMB)的PIP模式
参照图1和图2,在空闲模式下(S201),控制器110确定T-DMB或S-DMB是否操作在正常操作状态(S203)。在正常操作状态,S-DMB调谐器141和T-DMB调谐器142通过S-DMB天线100和T-DMB天线105接收广播信号,S-DMB处理器150和T-DMB处理器151对S-DMB调谐器141和T-DMB调谐器142输出的S-DMB和T-DMB信号进行解调和解码。解码的S-DMB和T-DMB信号存储在第一存储器120中,并分别由S-DMB编解码器160和T-DMB编解码器161解码,以作为视频信号和音频信号输出。S-DMB和T-DMB视频和音频信号存储在第二存储器122中。由音频处理单元125处理S-DMB和T-DMB音频信号,以便通过扬声器输出,由视频处理单元170处理S-DMB和T-DMB视频信号,以便通过显示器180输出。
如果T-DMB和S-DMB操作在正常操作状态中,则控制器110确定是否从键盘127输入激活多画面显示或PIP功能的键(S205)。如果多图像显示或PIP功能激活键被输入,则控制器110确定视频处理单元170的PIP处理器171是否具有关于主DMB和子DMB的设置(S207)。如果PIP处理器171不具有主DMB和子DMB的设置,则控制器110进行控制以设置主DMB和子DMB(S215)。如果选择S-DMB作为主DMB,则T-DMB成为子DMB。当然,主DMB和子DMB的源可被改变。如果PIP处理器具有关于主DMB和子DMB的设置,则控制器确定是否建立了TV输出(S209)。如果TV输出被建立,则控制器110进行控制,从而视频处理单元170的PIP处理器171输出的T-DMB视频信号为主画面,并输出S-DMB视频信号为子画面,反之亦然(S211)。此外,控制单元110还可配置在显示器上主频道画面和子频道画面的大小和位置。频道在显示器上显示主画面和子画面的同时,控制器110确定是否输入键来重设PIP功能(S213)。如果键被输入以重设PIP功能,则控制器110改变主画面和子画面的源(S217)。
控制器110在处理S-DMB和T-DMB信号时,确定是否通过RF单元检测到来电呼叫(S219)。如果检测到来电呼叫,则控制器110将DMB音频声音静音(S220)并将来电呼叫相关信息显示为主画面窗口,将主DMB频道显示为子画面(S221)。接着,控制器110确定是否检测到呼叫终止(S223)。如果未检测到呼叫终止,则控制器110返回到步骤S220。如果检测到呼叫终止,则控制器110返回到步骤S211。
单DMB多频道PIP模式
参照图1和图3,在空闲模式下(S301),控制器110检测到用于激活S-DMB的键输入(S303)。如果S-DMB激活键被输入,则控制器110确定S-DMB是否操作在正常操作状态(S305)。在正常操作状态下,S-DMB调谐器141通过S-DMB天线100接收S-DMB信号,S-DMB处理器150对S-DMB调谐器输出的S-DMB信号进行解调和解码。解码的S-DMB信号存储在第一存储器120中,由S-DMB编解码器160分别对其解码,以便将其输出为S-DMB视频和音频信号。由音频处理单元125处理S-DMB音频信号,以便通过扬声器输出,由视频处理单元处理S-DMB视频信号,以便通过显示器180输出。如果S-DMB操作在正常操作状态中,则控制器110确定是否从键盘输入用于激活多画面显示或PIP功能的键(S307)。如果PIP功能激活键被输入,则控制器110确定视频处理单元170的PIP处理器171是否实现设置S-DMB系统的主频道和至少一个子频道(S312)。接着,控制器110确定是否建立了TV输出(S313)。如果建立了TV输出,则控制器110进行控制,从而PIP处理器171在显示器上输出主频道和子频道视频信号,分别作为主画面和子画面(S315)。例如,在显示器上将MBC的S-DMB频道显示为子画面,而将KBS的S-DMB频道显示为主画面。可改变主画面和子画面之一或主画面和次画面两者的频道。
在显示主画面和子画面同时,控制器110确定用于重设PIP频道的键是否被输入(S317)。如果PIP频道重设键被输入,则控制器110根据用户选择信号改变主频道和子频道(S319)。
接着,控制器110在PIP模式下处理S-DMB频道信号的同时,确定是否通过RF单元121检测到来电呼叫。如果检测到来电呼叫,则控制器110将DMB音频声音静音(S322),并将显示来电呼叫相关信息显示为主画面,同时保持子画面的显示(S323)。接着,控制器110确定是否检测到呼叫终止(S325)。如果检测到呼叫终止,则控制器110返回到步骤S312。如果未检测到呼叫终止,则控制器110返回到步骤S322。
尽管上文已经详细描述了本发明的示例实施例,但是应该理解到:对于本领域技术人员清楚的这里所教导的基本发明构思的许多变化和修改仍落入如权力要求限定的本发明的精神和范围之内。
如上文所述,用于启用双DMB移动电话的多频道扫描设备和方法允许用户同时观看S-DMB和T-DMB频道。此外,用于启用双DMB的移动电话的多频道扫描设备和方法允许用户同时观看S-DMB和T-DMB系统之一的至少两个频道。
Claims (11)
1、一种用于启用双广播系统的移动电话的多频道扫描方法,包括:
确定第一和第二广播系统的功能;
设置多画面显示功能,在显示器上显示第一和第二广播系统的至少两个广播频道;以及
同时将广播频道之一显示为主频道画面,除主频道之外的广播频道中的至少一个显示为子频道画面。
2、如权利要求1所述的多频道扫描方法,还包括:配置显示器上主频道画面和子频道画面的大小和位置。
3、如权利要求2所述的多频道扫描方法,还包括:
当显示主频道画面和子频道画面的同时,是否接收到来电呼叫;
如果接收到来电呼叫,则将来电呼叫相关信息显示为主频道画面,以及将主频道显示为子频道画面。
4、如权利要求1所述的多频道扫描方法,其中,第一广播系统是卫星数字多媒体广播系统,第二广播系统是陆地数字多媒体广播系统。
5、一种用于启用双广播系统的移动电话的多频道扫描设备,包括:
操作监视器,用于监视第一和第二广播系统的操作;
多画面显示单元,用于设置屏幕上多个画面同时显示;以及
显示器,用于将广播频道之一显示为主频道画面,将除主频道以外的至少一个广播频道显示为子频道画面。
6、一种用于启用DMB的移动电话的多频道扫描设备,包括:
卫星DMB接收器,用于接收卫星DMB频道;
陆地DMB接收器,用于接收陆地DMB频道;
音频处理单元,用于处理卫星DMB和陆地DMB频道的音频信号;
显示器,用于显示多个DMB频道画面;
视频处理单元,用于处理多个DMB频道,以输出PIP格式的主画面和子画面;以及
控制器,用于控制卫星DMB和陆地DMB接收器、音频处理单元和视频处理单元,以在显示器上同时显示主画面和子画面。
7、如权利要求6所述的多频道扫描设备,其中,卫星DMB接收器包括:卫星DMB调谐器、卫星DMB处理器和卫星DMB编解码器。
8、如权利要求6所述的多频道扫描设备,其中,陆地DMB接收器包括:陆地DMB调谐器、陆地DMB处理器和陆地DMB编解码器。
9、一种用于支持卫星DMB和陆地DMB的启用DMB的移动电话的多频道扫描方法,包括:
确定是否设置了主频道和子频道;
如果未设置主频道和子频道,则为主频道画面和子频道画面从卫星DMB和陆地DMB频道中选择主频道和至少一个子频道;
通过建立TV输出来显示主频道画面和子频道画面;
在显示主频道和子频道的同时,确定接收到来电呼叫;以及
如果接收到来电呼叫,则将来电呼叫相关信息显示为主频道画面,将主频道显示为子频道画面。
10、如权利要求9所述的多频道扫描方法,还包括:
在显示主频道画面和子频道画面的同时,确定是否输入了频道重设信号;以及
如果频道重设信号被输入,则改变主频道和子频道。
11、如权利要求9所述的多频道扫描方法,其中,主频道和子频道是卫星DMB频道。
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Also Published As
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EP1865716A3 (en) | 2009-08-12 |
US20070287435A1 (en) | 2007-12-13 |
EP1865716A2 (en) | 2007-12-12 |
KR100757231B1 (ko) | 2007-09-10 |
US8155631B2 (en) | 2012-04-10 |
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