公开(公告)号：WO2004111840A3

公开(公告)日：2005-02-03

申请号：PCT/BE2004000088

申请日：2004-06-17

Applicant: ST MICROELECTRONICS BELGIUM NV ,  QUANTEN ERIK ,  JACOPS DAVY

Inventor： QUANTEN ERIK ,  JACOPS DAVY

IPC: G06F9/44

CPC classification number: G06F8/36

Abstract: The present invention provides a framework so that software can be embedded into a telecommunications semiconductor device such as an integrated circuit or into a chip. The framework is an API. The telecommunications device may support a telecommunications protocol, e.g. a wireless protocol such as BT. For example the BT Layers above an HCI can support different profiles and/or Applications. The semiconductor devices according to the present invention are particularly suitable for products where no host processor is available to provide the process engine to run the applications software. The semiconductor devices according to the present invention can include an ASIC, an integrated circuit, a multicarrier module (MCM) a printed circuit board or similar. Such devices may find advantageous use in small apparatus, e.g. wireless linked headphones.

Abstract translation: 本发明提供了一种框架，使得软件可以嵌入诸如集成电路或芯片的电信半导体器件中。 框架是一个API。 电信设备可以支持电信协议，例如， 诸如BT的无线协议。 例如，HCI以上的BT层可以支持不同的配置文件和/或应用程序。 根据本发明的半导体器件特别适合于没有主处理器可用于提供处理引擎以运行应用软件的产品。 根据本发明的半导体器件可以包括ASIC，集成电路，多载波模块（MCM），印刷电路板等。 这样的装置可以在小型装置中发现有利的用途，例如， 无线连接耳机。

公开(公告)号：DE602005018198D1

公开(公告)日：2010-01-21

申请号：DE602005018198

申请日：2005-08-12

Applicant: ST MICROELECTRONICS BELGIUM NV

Inventor： CAPRETTA PIETRO ,  TERRYN STEVEN ,  SCHMIT JEAN-JACQUES

IPC: H04L27/233

Abstract: A receiver comprises: means (12) for deriving at least a first stream (30) of first digitized samples from a received analog signal at a first sampling rate, means (40,42) for selecting a first sampling point and at least a second sampling point, a demodulator (44) for demodulating first and second symbols from the at least first stream of samples based on the first and the at least one second sampling points, and means (46) for determining a value related to a demodulation accuracy for the first and second symbols and for outputting a signal, the means (40,42) for selecting being adapted to alter the sampling point based on the signal. By assessing the demodulation accuracy in real time clock drift can be compensated. The demodulation accuracy can be a value related to a phase error or an error energy such as EVM or DEVM for each demodulated symbol.

公开(公告)号：GB0424424D0

公开(公告)日：2004-12-08

申请号：GB0424424

申请日：2004-11-04

Applicant: ST MICROELECTRONICS BELGIUM NV

IPC: G06F12/06

Abstract: A code patching device is provided for use with a processor having a read-only memory which stores instruction code and a further memory for storing patch code. A plurality of patch address registers each store an address, in the read-only memory, at which a patch is to be performed. A comparator compares the address of the read-only memory that is being accessed by the processor with the addresses stored in the registers. A control unit selects between code from the read-only memory or patch code from the further memory depending on the comparison. The code patching device can replace, on-the-fly, erroneous lines of code from the read-only memory by corrected ones. During an initialisation process the patch code is loaded into the further memory and the registers are loaded with the addresses which require patching.

公开(公告)号：DE602004020988D1

公开(公告)日：2009-06-18

申请号：DE602004020988

申请日：2004-09-15

Applicant: ST MICROELECTRONICS BELGIUM NV

Inventor： BORREMANS MARC ,  GOETSCHALCKX PAUL ,  MONTERASTELLI ANDREA

IPC: H04B1/04 ,  H03C3/40 ,  H03D7/16

Abstract: An RF transmitter suitable for ISM band transmissions has an IF modulator (120) and an RF modulator (150), the IF modulator being arranged to use a very-low-IF-frequency f IF , smaller than half the channel bandwidth, such that spurious unwanted modulation components fall in other channels having a channel number within one or two of a channel being transmitted. This can reduce the VCO pulling problem and reduce adjacent channel power degradation compared to using higher IF frequencies. The local oscillator PLL's fractionality is used in order to optimize the adjacent power frequency plan by selecting the most appropriate IF frequency. For the "Bluetooth ® Wireless Technology" application, the IF frequency is

公开(公告)号：DE60228597D1

公开(公告)日：2008-10-09

申请号：DE60228597

申请日：2002-12-23

Applicant: ST MICROELECTRONICS BELGIUM NV

Inventor： CRANINCKX JAN FRANS LUCIEN

IPC: H03L7/18 ,  H03L7/081 ,  H03L7/089 ,  H03L7/197

Abstract: The present invention is related to a Phase-Locked Loop with a main loop comprising a Phase Frequency Detector (1), a Main Charge Pump (2), a Main Loop Filter (3), a Voltage Controlled Oscillator (4) and a Frequency Divider (5), coupled in series, a calibration loop coupled to said Phase Frequency Detector (1) and comprising a Calibration Charge Pump (6) and a Calibration Loop Filter (8'), a Control Logic (9) arranged to control said Frequency Divider (5) and to receive a control input signal, and a Reference Frequency Signal (10) applied to said Phase Frequency Detector (PFD)(1) and to said Control Logic (9) and a calibration signal (11) applied to said calibration loop, wherein the main loop comprises a delay generator (14) controlled by said Control Logic (9) and arranged to receive correction signals from said calibration loop and to send an output signal to said Phase Frequency Detector (1).

公开(公告)号：DE60227968D1

公开(公告)日：2008-09-11

申请号：DE60227968

申请日：2002-12-24

Applicant: ST MICROELECTRONICS BELGIUM NV

Inventor： PISONI FABIO

IPC: H04L27/26 ,  H03H17/04 ,  H03H17/06

Abstract: A clock offset compensation arrangement has a fractional interpolator for applying a trigonometric interpolation to a sampled input signal according to a clock offset signal. It uses transform based processing in the frequency domain. Compared to a polynomial type interpolation it can be easier to implement, and can achieve a closer approximation to a perfect interpolation. It can reduce the effects of non linear type errors introduced by truncation of higher powers. The arrangement can be applied to receivers or transmitters of multicarrier modems, or any application which needs rate adaption or synchronization.

公开(公告)号：DE60313158D1

公开(公告)日：2007-05-24

申请号：DE60313158

申请日：2003-05-19

Applicant: ST MICROELECTRONICS NV ,  ST MICROELECTRONICS BELGIUM NV

Inventor： PISONI FABIO ,  HUG ROLAND ,  BONAVENTURA MARCO

IPC: H04L27/26 ,  H04B3/23 ,  H04L25/03

Abstract: An equalizer for a multi carrier transmission system, converts a transmitted multi carrier signal into sampled frequency domain signals, and suppresses time domain delay dispersion, on the sampled frequency domain signals. It exploits circulant decomposition of a Toeplitz matrix to enable the computationally heavy evaluation of a matrix multiplied by a vector, to be avoided. Increased precision arises from the frequency domain processing being equivalent to a longer time domain FIR filter than is normally practical. The amount of compensation for different carriers can be adjusted, which can lead to increased precision.

公开(公告)号：DE602006013299D1

公开(公告)日：2010-05-12

申请号：DE602006013299

申请日：2006-07-03

Applicant: ST MICROELECTRONICS BELGIUM NV

Inventor： WERNAERS YVES

IPC: H04L27/26

Abstract: A multicarrier transmission system uses a set of carriers spaced apart in frequency with a number of bits being assigned to each carrier. A transmitter has an input for receiving a data signal (2) for transmission and a mapper (14) arranged to map the received data signal into a set of complex data symbols, wherein each data symbol determines modulation of one carrier in a set of carriers which are spaced in frequency. A frequency domain-to-time domain transform stage (18) is arranged to convert the set of modulated carriers to a time-domain signal. A peak detector (26) arranged to detect when the time-domain signal exceeds a predetermined criterion. A constellation modifier (27) arranged to modify the constellation value of at least one of the carriers in the converted time-domain signal.

公开(公告)号：DE602005010574D1

公开(公告)日：2008-12-04

申请号：DE602005010574

申请日：2005-08-12

Applicant: ST MICROELECTRONICS BELGIUM NV

Inventor： CAPRETTA PIETRO ,  SCHMIT JEAN-JACQUES ,  TERRYN STEVEN

IPC: H04L27/233 ,  H04L27/227

Abstract: Method and apparatus for a wireless receiver are described which derive at least a first stream of first digitized samples (30) from a received analog signal at a first sampling rate and identify a first frequency offset of the first stream based on a plurality of parallel correlations (40) using complex reference signals (38) which differ from each other by phase offsets. A second frequency offset is identified (48) based on tracking a demodulation accuracy for each symbol which is demodulated from the first stream of digitized samples. These frequency offsets can be used to rotate decision areas in the demodulator. The methods and apparatus may be used in a Bluetooth receiver.

公开(公告)号：DE602005007213D1

公开(公告)日：2008-07-10

申请号：DE602005007213

申请日：2005-08-12

Applicant: ST MICROELECTRONICS BELGIUM NV

Inventor： CAPRETTA PIETRO

IPC: H03H17/06 ,  H04H20/00

Abstract: A receiver path comprises a means for generating first digitized samples from a received analog signal at a first sampling rate, e.g. an ADC (12). An interpolating filter (13) is used to generate from the first digitized samples second digitized samples which are estimates of samples obtainable by sampling the received analog signal at a second sample rate lower than the first sampling rate, second digitized samples being output at the first sampling rate and including at least one unusable sample. A circuit (14) is provided for generating a signal for controlling components of the receive path downstream of the interpolation filter to prevent processing of the unusable sample. The advantage of this arrangement is that a separate oscillator at the second sampling rate is not required while still allowing the second sampling rate to be a whole multiple of 1MHz.