Oscillator-modulator apparatus and method therefor
US4152671A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 1977 |
| Grant date | May 1, 1979 |
| Priority date | — |
| Expiry date | Jul 25, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S174/34
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A radio frequency oscillator-modulator for use in a video game includes a folded metal shield box having a slot on one of its ends in which a similarly slotted printed circuit board containing the oscillator and modulator is mated with. Circuitry of the oscillator and modulator provides for great linearity and low R.F. radiation. The slot arrangement provides for effective grounding of the ground metallization of the external portion of the printed circuit board which contains the radio frequency output terminal along with the various input terminals. This portion contains ground metallization which makes very effective electrical contact with the slot of the shield box thus again containing R.F. radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.