ປະ​ເພດ​ຄຳ​ຮ້ອງ
Patent - Foreign
ປະ​ເພດ​ຄຳ​ຮ້ອງຍ່ອຍ
Patent - PCT National Phase
(10) ເລກທີ ແລະ ວັນທີການຈົດທະບຽນ
ສະຖານະ
Filed
(180) ມື້​ໝົດ​ອາຍຸ
(20) ​ເລກທີ ​ແລະ ມື້ ຍື່ນ​ຄຳ​ຮ້ອງ
LA P/801 2021.10.04
(40) ​ເລກທີ ​ແລະ ວັນ​ທີ​ເຜີຍ​ແຜ່
(86) ເລກທີ ແລະ ວັນທີ ເອກະສານ PCT
(87) and Date ເລກທີ ແລະ ວັນທີ່ ເຜີຍແຜ່ PCT
(85) ວັນ​ທີເອກະສານ​ເຂົ້າ
(30) ລາຍລະອຽດບຸລິມະສິດ
US 61/383,441
2021.09.16
US 61/419,164
2010.12.02
(51) ການຈັດ​ໝວດ​ໝູ່ IPC
(74) ຊຶ່ບໍລິສັດຕົວແທນ
(LA) Lao Trademark Agency : 148-149 Ban Sisavath Kang, Unit 16 Chanthabury District, P.O. Box: 925, Vientiane
(54) ຫົວຂໍ້
(LA) CROSS PRODUCT ENHANCED SUBBAND BLOCK BASED HARMONIC TRANSPOSITION
(EN) CROSS PRODUCT ENHANCED SUBBAND BLOCK BASED HARMONIC TRANSPOSITION
(57) ບົດສັງເຂບ
(LA)

The invention provides an efficient implementation of cross-product enhanced high-frequency reconstruction (HFR), wherein a new component at frequency QΩ + Ωq is generated on the basis of existing components at Ω and QΩ + Ωq. The invention provides a block-based harmonic transposition, wherein a time block of complex subband samples is processed with a common phase modification. Superposition of several modified samples has the net effect of limiting undesirable intermodulation products, thereby enabling a coarser frequency resolution and/or lower degree of oversampling to be used. In one embodiment, the invention further includes a window function suitable for use with block-based cross-product enhanced HFR. A hardware embodiment of the invention may include an analysis filter bank (101), a subband processing unit (102) configurable by control data (104) and a synthesis filter bank (103).

(58) ການ​ຮຽກຮ້ອງ
ປະເພດຂອງເອກະສານ ວັນທີ ການດໍາເນີນການ
ຊື່ຂອງລາຍການວັນ​ທີສະຖານະ
Filing2021.10.04Filed
Filing2022.03.07Filed