- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 9/78 - 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 for separating the brightness signal or the chrominance signal from the colour television signal, e.g. using comb filter
Patent holdings for IPC class H04N 9/78
Total number of patents in this class: 97
10-year publication summary
|
7
|
6
|
7
|
12
|
3
|
5
|
4
|
5
|
2
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Texas Instruments Incorporated | 19481 |
8 |
| Realtek Semiconductor Corp. | 3274 |
8 |
| Avago Technologies International Sales Pte. Limited | 8805 |
8 |
| Samsung Electronics Co., Ltd. | 144675 |
7 |
| Blackmagic Design Pty Ltd | 170 |
4 |
| Pixelworks Semiconductor Technology (Shanghai) Co., Ltd. | 35 |
4 |
| Canon Inc. | 39618 |
3 |
| Huawei Technologies Co., Ltd. | 111449 |
3 |
| STMicroelectronics International N.V. | 581 |
3 |
| Zhejiang Dahua Technology Co., Ltd. | 599 |
3 |
| Apple Inc. | 54577 |
2 |
| Shenzhen China Star Optoelectronics Technology Co., Ltd. | 8478 |
2 |
| Dolby Laboratories Licensing Corporation | 4107 |
2 |
| Guangdong Oppo Mobile Telecommunications Corp., Ltd. | 20778 |
2 |
| Intuitive Surgical Operations, Inc. | 4017 |
2 |
| Nextchip Co., Ltd. | 44 |
2 |
| Sony Semiconductor Solutions Corporation | 10355 |
2 |
| Google Inc. | 4254 |
1 |
| Intel Corporation | 46833 |
1 |
| Ricoh Company, Ltd. | 13205 |
1 |
| Other owners | 29 |