Description
STEREOPHONIC SYSTEMS (information storage on discs or tapes G11B; broadcast systems for the distribution of stereophonic information H04H 20/88; multiplex systems in general H04J)
H04S
Technology
Stats
- 4,830 US PATENTS IN FORCE
- 2,609 US APPLICATIONS PENDING
- 517 Total Patent Owners
- 7,412 TOTAL INVENTORS
Subclasses
| Subclass | Title |
|---|---|
| 1/00 | Two-channel systems (H04S 5/00, H04S 7/00 take precedence) |
| 3/00 | Systems employing more than two channels, e.g. quadraphonic (H04S 5/00, H04S 7/00 take precedence) |
| 3/02 | Systems employing more than two channels, e.g. quadraphonic (H04S 5/00, H04S 7/00 take precedence) of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other |
| 5/00 | Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation (arrangements for producing a reverberation or echo sound G10K 15/08) |
| 5/02 | Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation (arrangements for producing a reverberation or echo sound G10K 15/08) of the pseudo four-channel type, e.g. in which rear channel signals are derived from two-channel stereo signals |
| 7/00 | Indicating arrangements; Control arrangements, e.g. balance control |
Recent Patents
Not Available
Recent Publications
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Top Owners in This Class
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Applications Filed in This Class - By Year
Patents Issued To Date - By Filing Year
Average Time to Issuance
- 26 Months (last 2 years Issuances)
- 26 Months (last 5 years Issuances)