Communications: electrical – Systems – With specific power supply
Patent
1976-04-23
1978-05-23
Trafton, David L.
Communications: electrical
Systems
With specific power supply
350333, G09F 932, G02F 113
Patent
active
040913775
ABSTRACT:
An improved digital display driving circuit is provided. The display includes first and second display digits, the first display digit and second display digit being respectively formed by a plurality of segment electrodes, at least one digit electrode spaced apart from the segment electrodes and material disposed between the segments electrode and the digit electrode. Regions of the material are adapted to be rendered visually distinguishable from adjacent regions by the application of an electric field across the region. The regions of the material in registration with the segment electrodes are rendered visually distinguishable in response to a predetermined potential difference being applied across any one of the respective spaced apart segment electrodes and the digit electrodes. The invention is characterized by the first digit electrode and second digit electrode being referenced during alternating driving intervals of time to a potential such that the regions of the material in registration therewith are prevented from being rendered visually distinguishable. Each of the segment electrodes forming the first digit are coupled to a corresponding segment electrode forming the second digit to define a plurality of segment electrode pairs. A memory includes a plurality of outputs coupled to each pair of segment electrodes to reference each pair of electrodes to one of a first drive potential and second drive potential to be compared during each driving interval of time with the potential of the respective digit electrodes spaced apart therefrom, and a shift register adapted to receive a drive signal and in response thereto write-in the drive signal to the memory prior to each driving interval of time.
REFERENCES:
patent: 3845615 (1974-11-01), Cake
patent: 3863247 (1975-01-01), Hosokawa
patent: 3903518 (1975-09-01), Hatsukano
patent: 3973254 (1976-08-01), Nomiya et al.
Kabushiki Kaisha Suwa Seikosha
Trafton David L.
LandOfFree
Digital display driving circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Digital display driving circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital display driving circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-567004