Spectrum displaying apparatus for multichannel signals
US4339711A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1980 |
| Grant date | Jul 13, 1982 |
| Priority date | — |
| Expiry date | Jul 9, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R23/165
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for displaying the spectrum of multichannel signals includes band-pass filtering circuits of a plurality of channels provided to respectively correspond to the channels of a plurality of channels. Each of the band-pass filters of respective channels comprises a group of band-pass filters having filtering bands having a respectively different center frequencies and filtering by band dividing input signals. The apparatus comprises level comparing circuits for at least rectifying respectively the outputs of band-pass filters mutually having the same filtering band of the band-pass filtering circuits of the plurality of channels, thereafter level comparing the same, and obtaining the band signal of the higher level, an indication device having indicating parts of systems of the same number as the number of the band signals thus obtained, and circuits for supplying said band signals thus obtained to the indicating device and causing the levels thereof to be displayed by the indicating parts of the respectively corresponding systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.