An LCD heater having independent closed loop control over heating for a plurality of zones on the display, wherein each zone has a relatively homogeneous heat dissipation or heat sinking properties and one of the zones is a central region of the display which is heated by an ITO film and has its tem
An LCD heater having independent closed loop control over heating for a plurality of zones on the display, wherein each zone has a relatively homogeneous heat dissipation or heat sinking properties and one of the zones is a central region of the display which is heated by an ITO film and has its temperature sensed, by a transparent sensor, at a central point within the viewable section of the LCD.
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An LCD heater having independent closed loop control over heating for a plurality of zones on the display, wherein each zone has a relatively homogeneous heat dissipation or heat sinking properties and one of the zones is a central region of the display which is heated by an ITO film and has its tem
An LCD heater having independent closed loop control over heating for a plurality of zones on the display, wherein each zone has a relatively homogeneous heat dissipation or heat sinking properties and one of the zones is a central region of the display which is heated by an ITO film and has its temperature sensed, by a transparent sensor, at a central point within the viewable section of the LCD. d a video transmission control signal from the microprocessor unit, for adjusting a video transmission/reception channel frequency. 6. The portable wireless communication system of claim 5, further comprising: a video channel selection switch connected to the microprocessor for changing frequency of the video channel, wherein the microprocessor outputs a video channel control signal in response to a setting of the video channel selection switch. 7. The portable wireless communication system of claim 6, wherein the video transmission/reception circuit is responsive to the video channel control signal and a video transmission control signal from the microprocessor unit, for adjusting a video transmission/reception channel frequency. 8. The portable wireless communication system of claim 1, further comprising: an audio transmission switch connected to the microprocessor for controlling audio transmission of signal received from the microphone. 9. The portable wireless communication system of claim 8, further comprising: an audio channel selection switch connected to the microprocessor for changing frequency of the audio channel, wherein the microprocessor outputs an audio channel control signal in response to a setting of the audio channel selection switch. 10. The portable wireless communication system of claim 9, further comprising an audio circuit for processing audio signal, wherein the audio circuit is connected to the microphone and the speaker. 11. The portable wireless communication system of claim 10, wherein the audio transmission/reception circuit connected to the antenna and the audio circuit is responsive to the audio channel control signal from the microprocessor unit, for adjusting an audio transmission/reception channel frequency. 12. The portable wireless communication system of claim 7, further comprising: an audio transmission switch connected to the microprocessor for controlling audio transmission of signal received from the microphone. 13. The portable wireless communication system of claim 12, further comprising: an audio channel selection switch connected to the microprocessor for changing frequency of the audio channel, wherein the microprocessor outputs an audio channel control signal in response to a setting of the audio channel selection switch. 14. The portable wireless communication system of claim 13, further comprising an audio circuit for processing audio signal, wherein the audio circuit is connected to the microphone and the speaker. 15. The portable wireless communication system of claim 14, wherein the audio transmission/reception circuit connected to the antenna and the audio circuit is responsive to the audio channel control signal from the microprocessor unit, for adjusting an audio transmission/reception channel frequency. 16. The portable wireless communication system of claim 1, wherein the antenna is a dual mode antenna for transmitting and receiving audio and video signals. 17. A portable wireless communication system for processing audio and video signal and having a microphone, a speaker and an antenna, the communication system comprising: a microprocessor unit having a memory, the microprocessor unit checking states of a video mode switch, an audio transmission switch, a video channel selection switch, an audio channel selection switch and a video freeze switch and generating a plurality of control signals to a video transmission/reception circuit, an audio transmission/reception circuit, a video path control circuit and a video memory control circuit in accordance with the checked results; the audio transmission/reception circuit being connected between an audio antenna and an audio circuit, the audio circuit including the microphone and speaker, and responsive to an audio channel control signal and an audio transmission control signal from the microprocessor unit, for adjusting an audio transmission/reception channel frequency and driving an audio powe
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