- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 9/77 - Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
Patent holdings for IPC class H04N 9/77
Total number of patents in this class: 524
10-year publication summary
|
31
|
53
|
66
|
65
|
56
|
50
|
57
|
24
|
18
|
11
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Samsung Electronics Co., Ltd. | 144426 |
35 |
| Canon Inc. | 39538 |
23 |
| Dolby Laboratories Licensing Corporation | 4098 |
18 |
| Huawei Technologies Co., Ltd. | 111237 |
17 |
| GoPro, Inc. | 1955 |
16 |
| Sony Corporation | 31138 |
15 |
| Toshiba Corporation | 12300 |
8 |
| Koninklijke Philips N.V. | 24610 |
8 |
| Panasonic Intellectual Property Management Co., Ltd. | 31022 |
8 |
| Realtek Semiconductor Corp. | 3274 |
8 |
| Sony Semiconductor Solutions Corporation | 10315 |
8 |
| Apple Inc. | 54527 |
7 |
| Sharp Corporation | 10302 |
7 |
| Duelight LLC | 112 |
7 |
| Guangdong Oppo Mobile Telecommunications Corp., Ltd. | 20727 |
7 |
| Maxell, Ltd. | 2775 |
7 |
| Kyocera Sld Laser, Inc. | 297 |
7 |
| Intellectual Ventures II LLC | 282 |
6 |
| Avago Technologies International Sales Pte. Limited | 8829 |
6 |
| Qualcomm Incorporated | 84634 |
5 |
| Other owners | 301 |