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1. 发明授权

US4392247A Broadcast receiver with search tuning 失效
标题翻译：具有搜索调谐功能的广播接收机
公开(公告)号：US4392247A
公开(公告)日：1983-07-05
申请号：US256365
申请日：1981-04-22
申请人： Theodorus H. M. van Deursen
发明人： Theodorus H. M. van Deursen
IPC分类号： H03J7/18 , H03J1/00 , H03J7/28 , H03J7/00
CPC分类号： H03J1/0066 , H03J1/005
摘要： A broadcast receiver includes an automatic search tuning arrangement, the tuning being automatically selected on operation of switches which correspond to a number of regions (A . . . F) and other switches which correspond to the chosen program (VF, P.sub.1, P.sub.2 or P.sub.3). These switches cause a control circuit (59) to address a gate circuit (95) to sequentially produce an output corresponding to a subarea of a region to be applied to an address memory (93) of a memory circuit (23). The address memory in turn causes a memory (33, 35, 37 or 39) corresponding to the selected program to produce codes stored therein which correspond to the transmission frequencies of that program and which are used to control the output frequency of a local oscillator (7) via a phase locked loop. The transmission chosen for reception is determined by a count of the number of receivable transmissions corresponding to tuning data from one and the same group.
摘要翻译：广播接收机包括自动搜索调谐装置，在对应于多个区域（A ... F）和对应于所选择的节目（VF，P1，P2或P3）的其他开关的开关的操作上，自动选择调谐）。这些开关使得控制电路（59）寻址门电路（95）以顺序产生对应于要施加到存储器电路（23）的地址存储器（93）的区域的子区域的输出。地址存储器依次导致与所选程序相对应的存储器（33,35,37或39）产生对应于该程序的传输频率的代码，并用于控制本地振荡器的输出频率（ 7）通过锁相环。选择用于接收的传输由对应于来自同一组的调谐数据的可接收传输的数量的计数确定。

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