公开(公告)号：EP1980026A1

公开(公告)日：2008-10-15

申请号：EP07700662.5

申请日：2007-01-22

Applicant: NXP B.V.

Inventor： PERRIN, Jean-Philippe ,  BINI, Jean-Claude

IPC: H04B1/10 ,  H04B15/02 ,  H04B15/04

CPC classification number: H04B15/02 ,  H04B2215/064

Abstract: The radio telecommunication terminal (2) comprises a data burst scheduler able to schedule the continuous transmission of consecutive data bursts which generate noise of similar energy on the radio-frequency channel as long as a specific radio-frequency channel is used to receive a radio signal, the respective energy of the noise generated by the transmission of two consecutive first and second data burst being similar only if the noise energy gradient between the end of the transmission of the first data burst and the beginning of the transmission of the second data burst is situated between predetermined upper and lower limits.

公开(公告)号：EP2174435A2

公开(公告)日：2010-04-14

申请号：EP08789384.8

申请日：2008-07-21

Applicant: NXP B.V.

Inventor： LEMELLAT, Bertrand ,  SCHAIT, Claudio ,  BINI, Jean-Claude

IPC: H04H60/04

CPC classification number: H04H60/04

Abstract: The invention relates to an audio switch (1, 1') for performing audio signal switching, which audio switch (1, 1') comprises a plurality of input ports (10, 11, 12, 13) for obtaining digitised audio input signals (CH1L, CH1R, CH2L, CH2R), a plurality of output ports (301, 302, 303, 304, 305, 306, 307) for outputting a number of analogue audio output signals (HFR1, HFR2, HFR3, HFR4, RCV, EAR1, EAR2), and a digital matrix first stage (2, 2') for switching a digitised audio input signal (CH1L, CH1R, CH2L, CH2R), derived from one or more of the input ports (10, 11, 12, 13), to any one of a plurality of digital stage output ports (23, 24, 25, 26) according to a specified configuration, to give a number of digital stage output signals (DS1L, DS1R, DS2L, DS2R). The audio switch further comprises a plurality of digital-to-analogue converters (31, 32), connected to the digital stage output ports (23, 24, 25, 26) of the digital matrix first stage (2, 2'), for performing digital-to-analogue conversion on a number of the digital stage output signals (DS1L, DS1R, DS2L, DS2R) to obtain a number of analogue audio signals (33, 34, 35, 36), and an analogue second stage (3) for switching a number of the analogue audio signals (33, 34, 35, 36) to one or more of the analogue audio output ports (301, 302, 303, 304, 305, 306, 307) according to a specified configuration. The invention also describes a method of performing audio signal switching, and an electronic device (5).