Invention Grant
- Patent Title: Virtual surround sound production circuit, planar sound source apparatus, and flat panel display device
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Application No.: US17790089Application Date: 2021-05-24
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Publication No.: US12081954B2Publication Date: 2024-09-03
- Inventor: Zhaohui Meng , Jing Liu , Wei Sun , Li Tian
- Applicant: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD. , BOE TECHNOLOGY GROUP CO., LTD.
- Applicant Address: CN Beijing
- Assignee: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.,BOE TECHNOLOGY GROUP CO., LTD.
- Current Assignee: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.,BOE TECHNOLOGY GROUP CO., LTD.
- Current Assignee Address: CN Beijing; CN Beijing
- Agency: IP & T GROUP LLP
- Priority: CN 2010517863.1 2020.06.09
- International Application: PCT/CN2021/095579 2021.05.24
- International Announcement: WO2021/249172A 2021.12.16
- Date entered country: 2022-06-29
- Main IPC: H04S5/00
- IPC: H04S5/00 ; H04R5/02 ; H04R5/04

Abstract:
A virtual surround sound production circuit includes: a subtraction unit configured to perform subtraction operation on first and second signals to output a third signal; a first addition unit configured to perform addition operation on the first and second signals to output a center channel signal; a surround sound adjustment unit configured to adjust the third signal or another third signal that has undergone frequency compensation to output a fourth signal; a center compensation unit configured to adjust the center channel signal to output a fifth signal; a second addition unit configured to perform addition operation on the first, fourth and fifth signals to output a first output signal; a phase inverter unit configured to perform phase inversion on the fourth signal to generate a phase-inverted signal; and a third addition unit configured to perform addition operation on the second, fifth and phase-inverted signals to output a second output signal.
Public/Granted literature
- US20230068347A1 VIRTUAL SURROUND SOUND PRODUCTION CIRCUIT, PLANAR SOUND SOURCE APPARATUS, AND FLAT PANEL DISPLAY DEVICE Public/Granted day:2023-03-02
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