TH7405B - "A device for reducing the loudness of the amplifier in a backup state" - Google Patents

Abstract

In short According to this invention there was a system that would "lower" the audio amplifier with a constant voltage supplying the components to such a system so that foreign noise and thump. that is connected to the power amplifier when the television is in a low-power "off" state. will not be amplified louder which will allow the audience to hear especially then The signal attenuation or power amplifier capability is generated by the microprocessor controller. This controls the power supply condition of the receiver. and will be plugged into the power amplifier when the receiver is in the "off" state, in a better form of invention. Similar arrangements are also used to reduce the volume or The ability of the power amplifier in an "on" state to disconnect from other speakers. such as when an external sound source and connected speakers are used. According to another aspect of the invention The reduced signal or power amplifier capability will also cause the power amplifier to reduce its power consumption. when in the "off" state

Claims (7)

1. In a television system with a low power supply, when the television It is in a "off" state and a high power condition when in a "on" state. The audio power amplifier is for driving speakers with a constant supply voltage connected from such power supply as long as AC line power is provided when the source Supply that energy and The volume reduction section to reduce the capacity with power amplification to prevent the audio signal from being fed to the speakers when the TV system is in "off" state. 2. TV receiver according to claim 1, where such reduction will consist of a microprocessor-based control unit. To generate a signal of degradation of the power amplifier capability When the receiver is put to the "off" state, the microprocessor also responds to user-given commands when the TV system is in the "on" state to generate a controlled signal. Reduces the ability to power amplifiers. 3. A television receiver with an audio power amplifier to drive speakers where the power source is being stimulated. It will still be connected to the power amplifier when the receiver is in the "off" state. 4. In a power supply television system with a low power condition when the receiver is in the "off" state and there will be a high power condition in the "on" state. The audio power amplifier is for driving speakers with a constant voltage supply connected from such power supply as long as AC line power is provided when the power supply is supplied and the noise reduction section. For reducing the power amplifier capability in order to prevent the sound signal from being fed to the speaker. It also reduces the current drawn by the audio power amplifier from the power supply. When the TV system is in "off" state 5. In low power television systems when the receiver is in the "off" state and has high power. When in an "open" state consisting of Personal power amplifier to drive the speaker. There is a constant voltage power supply connected from such power supply as long as the power from the AC line is provided to that power supply and the noise reduction section to reduce capacity. With a power amplifier to prevent the audio signal from being fed to the speaker. It also reduces the load being drawn by the audio power amplifier from the power supply when the TV system is in the "Off" The mitigation section contains microprocessor-based controls. To generate a signal, reducing the capacity of the power amplifier When the receiver is put in the The microprocessor will also respond to user commands when the television system is in the "on" state to generate a degradation control signal. 6. TV system with main power supply Which can be "on" and "off". The audio power amplifier has an output terminal that can be connected to the speaker. First control for triggering or stopping triggering a speaker attached to an output terminal in response to a user command. Second control for adjustment The back power supply is "on" and "off" in response to user commands. The power supply can be "turned on" under any condition of the "Cold start" and "Warm start" and section for determining whether The speakers will be connected or disconnected to the said output terminals. By the first control During the "off" state, the previous power supply last First control That motivates the speaker Which responds to both "Cold start" when "on" and determining whether the speaker is connected to the power amplifier output terminal during the previous last power supply "on" condition and will Does not activate the speaker after "Warm Start" has "turned on" and determines that the speaker will not be energized during the previous last power supply "On" state. 7. Television system according to claim 6, where such power amplifiers will be powered from an alternate power source, which will function even if the main power supply is in the "off" state and the first control will activate. Speaker by connecting In which the backup power supply and the aforementioned power amplifier And will not excite the speaker by disconnecting the backup power source.