公开(公告)号：EP0772839B1

公开(公告)日：2003-05-07

申请号：EP96913695.1

申请日：1996-05-30

申请人： Koninklijke Philips Electronics N.V. ,  Mikron Gesellschaft für integrierte Mikroelektronik m.b.H.

发明人： HOLWEG, Gerald ,  KOLLER, Manfred ,  THÜRINGER, Peter

IPC分类号： G06K7/08 ,  G06K7/10 ,  G06K19/07

CPC分类号： G06K19/0723

摘要： Proposed are two parallel control stages each with one transistor (T1, T2). The transistor (T2) forms part of the indirect parallel control stage and acts directly on the rectifier. It can take relatively high currents and is therefore relatively slow. The transistor (T1) forms part of the direct control stage and acts in parallel with the support capacitor. As a result of the coarse adjustment effected by transistor (T2), it is required to take only small currents and can therefore have very rapid control characteristics. Owing to the coarse adjustment effected by transistor (T2), the alternating voltage at the antenna connections (LA and LB) collapses rapidly if the HF signal is interrupted. This means that the transmission rate with pause interval modulation can be increased. Electrostatic chargings also derived from the transistor (T2), thus obviating the need for additional protective circuits.

公开(公告)号：EP0993652B1

公开(公告)日：2006-10-11

申请号：EP99914712.7

申请日：1999-04-29

申请人： Koninklijke Philips Electronics N.V.

发明人： KOLLER, Manfred ,  THÜRINGER, Peter

IPC分类号： G06K19/07 ,  G06K7/08

CPC分类号： G06K19/0701 ,  G06K19/0723

摘要： A data carrier (1) for receiving an amplitude-modulated carrier signal (TS) comprises rectifier means (5) and voltage limiting means (8) for limiting the d.c. supply voltage (V) that can be generated by the rectifier means (5), the voltage limiting means (8) having a delayed response to amplitude variations in the received carrier signal (TS) in order to avoid adverse effects on the modulation percentage of the carrier signal (TS), and having an undelayed and, consequently, rapid response to excessive amplitude values of the carrier signal (TS), which would give rise to an excessive d.c. supply voltage (V) for circuit elements (12, 13, 15, 16, 18) of the data carrier (1).

公开(公告)号：EP1502350A2

公开(公告)日：2005-02-02

申请号：EP02781515.8

申请日：2002-11-13

申请人： Koninklijke Philips Electronics N.V.

发明人： RAGGAM, Peter ,  KOLLER, Manfred

IPC分类号： H03C1/52

CPC分类号： H03C3/22

摘要： In a device (1) with a circuit (2) for generating a modulated signal (S) is provided a modulation device (9; 59) which is intended to receive a data signal (DS) and generate the modulated signal (S) as a function of the data signal (DS) where for the purpose of generating the modulated signal (S) as a function of the received data signal (DS) a choice can be made between at least two characteristic signal values (F1, F2; A1, A2) of the modulated signal (S) and further an adjustment device (13) is provided which is designed to adjust programmably and as a function of the data signal (DS) at least one of the characteristic signal values (F1, F2; A1, A2).

公开(公告)号：EP0993652A1

公开(公告)日：2000-04-19

申请号：EP99914712.7

申请日：1999-04-29

申请人： Koninklijke Philips Electronics N.V.

发明人： KOLLER, Manfred ,  THÜRINGER, Peter

IPC分类号： G06K19/07 ,  G06K7/08

CPC分类号： G06K19/0701 ,  G06K19/0723

摘要： A data carrier (1) for receiving an amplitude-modulated carrier signal (TS) comprises rectifier means (5) and voltage limiting means (8) for limiting the d.c. supply voltage (V) that can be generated by the rectifier means (5), the voltage limiting means (8) having a delayed response to amplitude variations in the received carrier signal (TS) in order to avoid adverse effects on the modulation percentage of the carrier signal (TS), and having an undelayed and, consequently, rapid response to excessive amplitude values of the carrier signal (TS), which would give rise to an excessive d.c. supply voltage (V) for circuit elements (12, 13, 15, 16, 18) of the data carrier (1).