Patent ID: 8054266

Claim:
A driving apparatus that is structured to drive a corresponding display device in response to a supplied image signal, where the image signal includes first and second portions both specifying a desired voltage signal that is to be selected and output during a prespecified timing duration, the driving apparatus comprising: a gray voltage generator that is operative to be powered by a single power supply and is operative to generate a plurality of gray voltage sets, each set of gray voltages including gray voltages having different levels, which levels are determined by a voltage setting of the single power supply, where the different levels are then serially and synchronously transmitted from the gray voltage generator, one sequentially after a next in accordance with a synchronizing timing control signal supplied to the gray voltage generator to thereby define a corresponding synchronous serial voltage signal; and a signal converter that includes: a first selector structured to select one of the synchronous serial voltage signals produced from a corresponding one of the gray voltage sets generated by the gray voltage generator, where the first selector is responsive to the first portion of the image signal for accordingly selecting a corresponding one of the synchronous serial voltage signals, and a second selector structured to select and synchronously sequentially output two or more of the gray voltages among the plurality of gray voltages belonging to the selected one synchronous serial voltage signal, where the second selector is responsive to the second portion of the image signal and to a timing information signal that is synchronized to the timing control signal supplied to the gray voltage generator; wherein the first portion of the image signal comprises a third portion and a fourth portion, and wherein the first selector comprises a first switching element group that selects a subset of gray voltage sets from among the plurality of gray voltage sets on the basis of the third portion of the image signal, and a second switching element group that selects a gray voltage set from the selected subset on the basis of the fourth portion of the image signal.