Thomson Licensing S.a.

Thomson Licensing

Robert Edward Morris

Alan Anderson Hoover

Thomas D Yost

Thomas Dale Yost

A method () for controlling a display function of an apparatus such as a television signal receiver is capable of remedying a display locked in an extinguished state to thereby ensure that a usable display is provided. According to an exemplary embodiment, the method () includes steps of detecting a power on condition of the apparatus (), determining whether at least one predetermined display parameter associated with the display function exhibits at least one predetermined value responsive to the power on condition (), and adjusting the at least one predetermined display parameter if the at least one predetermined display parameter exhibits the at least one predetermined value ().

Method and apparatus for adjusting a display in an extinguished state

In a stereophonic system having sum and difference signals with expanded spatial imaging, localization of center audio materials more towards the center is accomplished by equalization of the (L&plus;R) sum signal. The equalization comprises decreasing the bass response while increasing the treble response of the sum signal with the desired bass reduction being accomplished by the use of a gyrator to economically synthesize an inductance. Additionally, the equalizations in the (L&plus;R) sum signal to reduce the signal at bass frequencies and to increase the signal at treble frequencies are switchable singly or in combination between &ldquo;ON&rdquo; and &ldquo;OFF&rdquo; modes.

Centralizing of a spatially expanded stereophonic audio image

A &ldquo;floating&rdquo; or &ldquo;unipolar&rdquo; DC supply is coupled to a filter comprising a pair of capacitors coupled in series across the supply output. Output voltages developed across the capacitors are applied to the supply inputs of an amplifier having an output coupled via a load to a common connection of the two capacitors. A bias supply, coupled in parallel with the filter, produces an output voltage representative of the relative values of the capacitor voltages which is fed back to an input of the amplifier via a threshold device. Under transient input signal conditions, which would tend to unbalance the filter capacitor voltages, the bias supply renders the threshold device conductive for diverting the transient from the amplifier input thus reducing the supply voltage imbalance and improving the transient recovery time of the amplifier.

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Indianapolis, IN, United States of America

Robert Edward Morris