UHF tuner channel indicating device
AssigneeHitachi, Ltd.
InventorsHideo Ishigami, Masaaki Goto
Life of this patent
Estimating the term…
Abstract
There is disclosed a UHF tuner channel indicating device adapted for use in a television receiver. In this device, two drums which carry digits in the unit digit and tens digit, respectively, for indicating channel numbers, are placed coaxially with each other and rotatably, with the drum carrying the unit digits being placed inwardly of the other drum, said drums being coupled to a rotary device of a tuner, whereby one turn of the unit-digit carrying drum causes the tens digit carrying drum to rotate by one-tenth turn by means of an intermittent shifting mechanism, thereby indicating a channel number in two digits.
Claims8
A UHF tuner channel indicating device comprising:
- a channel switching shaft;
- a rotary device including a first gear directly rotatable together with said channel switching shaft, and an indicator drive means including an indicator drive shaft transverse to said channel switching shaft, said indicator drive means having a crown gear in mesh with said first gear of said rotary device and said crown gear being fixed to said indicator drive shaft for driving said indicator drive shaft by said channel switching shaft;
- a first cylindrical indicating drum having an indication section on a peripheral surface thereof for indicating unit digits, said first cylindrical indicating drum being fixed for direct rotation with said indicator drive shaft;
- a second cylindrical indicating drum having an indication section on a peripheral surface thereof for indicating tens digits, said second cylindrical indicating drum having a diameter greater than that of said first drum and being mounted coaxially about said first cylindrical indicating drum with at least a portion of the peripheral surfaces of each of said first and second indicating drums being mutually overlapping with portions of the peripheral surface of at least one of said drums being transparent such that a two digit UHF channel indicating number is displayed, and said second indication drum being rotatable with respect to said indicator drive shaft;
- and
- intermittent gear means for operatively connecting said second drum to said indicator drive shaft for intermittently rotating said second indicating drum by transmitting the rotation of said indicator drive shaft to said second drum for only one-tenth of a turn of said crown gear, so that said UHF channel indicating number is progressively displayed as said channel switching shaft is turned.
Dependencies are inferred from the claim text.