G06F 17/147
Discrete orthonormal transforms
Official title: {Discrete orthonormal transforms, e.g. discrete cosine transform, discrete sine transform, and variations therefrom, e.g. modified discrete cosine transform, integer transforms approximating the discrete cosine transform (G06F17/145 takes precedence)}
G06F17/147 (Discrete orthonormal transforms) appears on 642 US grants and 427 published applications in this corpus.
Search patents in G06F- Granted patents
- 642
- Published applications
- 427
- Assignees
- 258
- Inventors
- 908
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
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| 1983 | 1 | 0 |
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| 1997 | 32 | 0 |
| 1998 | 33 | 0 |
| 1999 | 19 | 0 |
| 2000 | 22 | 0 |
| 2001 | 17 | 4 |
| 2002 | 17 | 18 |
| 2003 | 13 | 30 |
| 2004 | 14 | 27 |
| 2005 | 14 | 31 |
| 2006 | 31 | 29 |
| 2007 | 11 | 27 |
| 2008 | 29 | 15 |
| 2009 | 21 | 21 |
| 2010 | 20 | 15 |
| 2011 | 8 | 18 |
| 2012 | 22 | 18 |
| 2013 | 26 | 29 |
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| 2015 | 20 | 8 |
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| 2017 | 16 | 13 |
| 2018 | 10 | 14 |
| 2019 | 16 | 19 |
| 2020 | 19 | 16 |
| 2021 | 13 | 17 |
| 2022 | 17 | 11 |
| 2023 | 10 | 3 |
| 2024 | 10 | 9 |
| 2025 | 4 | 5 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for perceptual quality-driven adaptive quantization in neural network data compression with dynamic feedback control11 Aug 2026US 12,705,460 B2Atombeam Technologies Inc.
- Video content delivery methods27 Jan 2026US 12,537,953 B2Texas Instruments Incorporated
- Line graph transforms (LGTs) using 8-bit and 10-bit cores25 Nov 2025US 12,483,728 B2Tencent America LLC
- Transform and quantization architecture for video coding18 Nov 2025US 12,477,110 B2Texas Instruments Incorporated
- DST-7/DCT-8 using 8-bit cores24 Jun 2025US 12,341,997 B2Tencent America LLC
- Cooley-tukey butterfly-based number theoretic transform (ntt)/inverse ntt without explicit bit reversal2 Jul 2026US 2026/0187183 A1
- Discrete cosine transform processing device and discrete cosine transform processing method25 Jun 2026US 2026/0178688 A1Sigmastar Technology Ltd.
- Video content delivery methods21 May 2026US 2026/0143120 A1
- Adaptive Quantization for Psychoacoustic Audio Coding Using Discrete Cosine Transform-Based Dilation30 Apr 2026US 2026/0120702 A1Google Inc.
- Line graph transforms (lgt) using 8-bit and 10-bit cores12 Feb 2026US 2026/0046454 A1Tencent America LLC
Most cited
By later US patents
- Methods and apparatus for preventing rounding errors when transform coefficients representing a motion picture signal are inversely transformed240US 5,481,553 ASony Corporation · 1996
- Data compression and decompression198US 5,546,477 AKlics, Inc. · 1996
- System and method for progessively transform coding digital data141US 6,771,828 B1Microsoft Corporation · 2004
- Video bandwidth reduction system using a two-dimensional transformation, and an adaptive filter with error correction128US 4,189,748 ANorthrop Corporation · 1980
- Image data processing apparatus128US 5,142,380 ARicoh Company, Ltd. · 1992