| 摘要 |
A remocon locator signal transmitting circuit is provided in an apparatus having a television tuner. When a power for the apparatus is turned on, a micro-computer in the apparatus sets a local oscillation frequency of the television tuner at a predetermined frequency (390 MHz). A 390-MHz local oscillation signal is supplied from the television tuner through an input terminal to the remocon locator transmitting circuit. In the remocon locator transmitting circuit, the local oscillation signal is amplitude-modulated by a code signal applied from the input terminal so that a locator signal is transmitted from a loop antenna.
|
