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Acquired Intangibles | 12 Months Ended
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Jun. 26, 2021
Goodwill And Intangible Assets Disclosure [Abstract] |
Acquired Intangibles |
5. | Acquired Intangibles
The following table summarizes the life, the gross carrying value of our acquired intangible assets, and the related accumulated amortization as of the end of fiscal 2021 and 2020 (in millions):
|  |  |  |  |  | 2021 |  |  | 2020 |
|  | Weighted Average Life in Years |  |  | Gross Carrying Value |  | Accumulated Amortization |  | Net Carrying Value |  |  | Gross Carrying Value |  | Accumulated Amortization |  | Net Carrying Value |
Audio and video technology |  |  | 5.0 |  |  | $ | 138.6 |  | $ | (97.6 | ) | $ | 41.0 |  |  | $ | 138.6 |  | $ | (76.5 | ) | $ | 62.1 |
Customer relationships |  |  | 4.2 |  |  |  | 125.5 |  |  | (63.8 | ) |  | 61.7 |  |  |  | 81.8 |  |  | (61.4 | ) |  | 20.4 |
Wireless connectivity technology |  |  | 6.0 |  |  |  | 93.0 |  |  | (14.2 | ) |  | 78.8 |  |  |  | — |  |  | — |  |  | — |
Video interface technology |  |  | 3.0 |  |  |  | 82.0 |  |  | (25.1 | ) |  | 56.9 |  |  |  | — |  |  | — |  |  | — |
Display driver technology |  |  | 7.0 |  |  |  | 20.4 |  |  | (17.5 | ) |  | 2.9 |  |  |  | 164.0 |  |  | (158.2 | ) |  | 5.8 |
Backlog |  | Not applicable |  |  |  | 12.0 |  |  | (12.0 | ) |  | — |  |  |  | — |  |  | — |  |  | — |
Licensed technology and other |  |  | 4.1 |  |  |  | 13.0 |  |  | (8.1 | ) |  | 4.9 |  |  |  | 7.7 |  |  | (5.5 | ) |  | 2.2 |
Patents |  |  | 8.0 |  |  |  | 4.4 |  |  | (3.2 | ) |  | 1.2 |  |  |  | 4.4 |  |  | (2.6 | ) |  | 1.8 |
Tradename |  |  | 5.1 |  |  |  | 4.8 |  |  | (1.7 | ) |  | 3.1 |  |  |  | 1.8 |  |  | (0.7 | ) |  | 1.1 |
In process research and development |  | Not applicable |  |  |  | 51.0 |  |  | — |  |  | 51.0 |  |  |  | — |  |  | — |  |  | — |
Acquired intangibles, gross |  |  | 5.5 |  |  | $ | 544.7 |  | $ | (243.2 | ) | $ | 301.5 |  |  | $ | 398.3 |  | $ | (304.9 | ) | $ | 93.4 |
In fiscal 2021, there was $143.6 million of display driver developed technology and $28.3 million of customer relationships retired which were fully amortized. In fiscal 2020, there was $47.2 million of fingerprint authentication technology retired which was fully amortized. Amortization expense is calculated using the straight-line method over the estimated useful lives of the acquired intangibles. The total amortization expense for the acquired intangible assets was $110.1 million in fiscal 2021, $51.4 million in fiscal 2020, and $74.4 million in fiscal 2019. This amortization expense was included in our consolidated statements of operations as acquired intangibles amortization and cost of revenue. The following table presents expected annual aggregate amortization expense in future fiscal years (in millions):
2022 |  | $ | 99.0 |
2023 |  |  | 86.1 |
2024 |  |  | 25.9 |
2025 |  |  | 19.0 |
2026 |  |  | 18.9 |
Thereafter |  |  | 1.6 |
To be determined |  |  | 51.0 |
Future amortization |  | $ | 301.5 |

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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