| 摘要 |
A portable remote controller for use with an accessory television device, such as a cable converter, satellite receiver, VCR, DVD player, delayed playback machine or video camera, particularly when used in conjunction with a televisor. The remote controller includes a provision for enabling a manual entry of a channel selection preference or other user determined command. User entry is usually accomplished through a finger actuated keypad submission, resulting in a command encoded wireless command signal being developed by the remote controller and sent to the controlled accessory device. As a result, the accessory device such as a cable box responds to the user's channel selection entry or other command and delivers an intermediate signal on a predetermined channel, commonly channel 3 or channel 4, that couples with the televisor. The remote controller simultaneously sends a preset value encoded wireless command signal directly to the televisor which assures that the televisor input is maintained compatible with the intermediate signal delivered on the predetermined channel by the accessory television device. For example, if the intermediate signal is delivered on channel 3, the televisor must be set to channel 3. The invention's essence is to reassert and thereby unequivocally maintain the necessitous intermediate signal compatibility between the televisor and the accessory television device every time the user submits a channel selection change or other command to the accessory television device.
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