首页>
外国专利>
Connector switch apparatus which can provide either a satellite or cable television signal or a ghost-free off-air television signal
Connector switch apparatus which can provide either a satellite or cable television signal or a ghost-free off-air television signal
展开▼
机译:可以提供卫星或有线电视信号或无鬼影的空中电视信号的连接器开关设备
展开▼
页面导航
摘要
著录项
相似文献
摘要
Connector switch apparatus which can provide either a cable or satellite television signal or a ghost-free off-air television signal. The apparatus obtains the cable or satellite television signal from a cable or satellite tuner, which can be included in the apparatus; and includes a television tuning device for producing a ghost-free off-air television signal, and a switch which provides either of those signals. The television tuning device employs use of antenna directionality control and ghost cancellation to produce a ghost-free off-air television signal. In particular, the television tuning device obtains an off-air television signal from a antenna, which may or may not be included therein, whose directionality can be changed to change reception quality of a received off-air television signal; and includes a baseband ghost cancellation unit which can perform baseband ghost cancellation. In a first embodiment, the directionality of the antenna is changed so that an off-air television signal of sufficient reception quality is received from which a ghost-free off-air television signal can be produced therefrom by the ghost cancellation unit. In a second embodiment, the television tuning system further includes a tuner, and controls the directionality of the antenna and the tuning frequency of the tuner so that a tuned off-air television signal is produced which is properly tuned and of sufficient quality that a properly tuned ghost- free off-air television signal can be produced therefrom by the ghost cancellation unit.
展开▼