Abstract:
The invention relates to a circuit arrangement (100; 100') and to a method for the inexpensive transmission of signals from at least one data source to at least one data sink, said signals being TMDS encoded at least in part, especially at least in a time slot manner and being associated with especially at least one DVI data connection and/or at least one HDMI data connection. According to the invention, the driver circuit (S1; S1') of at least one connection interface (IQ) which is mounted upstream and which is associated with the data source is supplied with a supply voltage (VDVI/HDMI) which is especially charged with up to approximately 55 milliampere, for example in the order of approximately five volt. The electrical TMDS encoded signals are electro-optically converted by means of at least one light-emitting element (LD1) mounted downstream of the driver circuit (S1; S1'), especially by means of at least one light diode, by means of at least one light-emitting diode, by means of at least one laser diode or by means of at least one laser, for example by means of at least one semiconductor laser, and are coupled into at least one optical fiber (F1), especially into at least one glass fiber or into at least one plastic fiber, for example into at least one plastic fiber, as light (LTMDS) that is supplied with TMDS encoded signals. The direct current portion supplied from a TMDS transmitter (TM) to the connection interface (IQ) associated with the data source is converted to a modulated signal current for controlling the light-emitting element (LD1) by means of the driver circuit (S1; S1'). The light (LTMDS) supplied with the TMDS encoded signals is coupled out from the optical fiber (F1) by means of at least one light-absorbing element (PD1), especially by means of a photodiode, is opto-electrically converted and supplied to at least one transimpedance converter circuit (S2; S2') which is mounted downstream of the light-absorbing element (PD1) and upstream of a connection interface (IS) that is associated with the data sink, the transimpedance converter circuit (S2; S2') being supplied by a direct voltage portion that is applied to at least one differential core pair (AD, AD').
Abstract:
The invention relates to a circuit arrangement (100; 100'), in particular a driver circuit, and to a method for controlling at least one light emitting component (50), to which a surge current (Ith) is applied, in particular for controlling at least one electro-optical transducer, for example at least one laser, such as a semiconductor laser, said circuit arrangement (100; 100') being supplied with current by means of at least one supply element (10), in particular by means of at least one current source and said light emitting component (50) being controlled by means of at least one switching element (30) situated between at least one current-limiting element (20) and the light emitting component (50) using at least one reversing controller (40). The aim of the invention is to further develop a circuit arrangement of this type in such a way that the performance is significantly improved in comparison to prior art. To achieve this, a maximum value (Imax) is provided for the current (I) by means of the current-limiting element (20) and that the logic "1" of the data to be transmitted (D) by means of the light emitting component (50) is represented by periodic switching between the zero value (I=0) of the current (I) and the maximum value (Imax) of the current (I) supplied to the light emitting component (50).
Abstract:
In order to develop a driver circuit (2) of, and a method for supplying voltage/current to, at least one of at least two optical transmission elements (8-1, 8-2, 8-3) which are intended to transmit at least one optical signal, in particular light, for the purpose of transmitting data, in particular at least two electrooptical transducers, for example at least two light-emitting diodes or at least two lasers, for instance at least two semiconductor lasers, in such a manner that the reliability of the optical transmission element (8-1, 8-2, 8-3) and/or the electrooptical interface module is significantly increased, it is proposed that, in particular in the event of the active optical transmission element (8-1, 8-2, 8-3) failing, at least one control unit (18) which is assigned to at least one driver circuit (2) be used to change over between the at least two outputs (19, 20, 21), which are designed to connect the optical transmission elements (8-1, 8-2, 8-3), in such a manner that an optical transmission element (8-1, 8-2, 8-3) is respectively in the activated state.
Abstract translation:的驱动电路(2)和电压/电流的用于发送的至少一个光信号,特别是光的,用于发送由光传输元件(8-1,8-2提供数据的目的提供的至少两个中的至少一个的方法,8- 3),特别是至少两个电光转换器,例如从至少两个发光二极管或发光二极管(的= L [飞行] E [mitting] d [IODE] S)或至少两个激光器,如至少两个半导体激光器的,所以 细化,使得光学发射元件(8-1,8-2,8-3)和/或电 - 光接口模块以显著方式增加的可靠性,所以建议,(特别是在有源光传输部件8-故障的情况下 1,8-2,8-3)通过用于连接光传输元件(8-1,8-2的至少两个之间与所述控制单元(18相关联的至少一个的至少一个驱动器电路(2)的装置),8-3)AU 有符号输出(19,20,21)被切换,使得在每种情况下光发送元件(8-1,8-2,8-3)处于激活状态。
Abstract:
The invention relates to a circuit arrangement (A) and to a corresponding method, using single-ended signals based on logic levels and differential, in particular common mode based signals, in which a full duplex data transmission is possible.
Abstract:
In order to modify a circuit arrangement (100) provided for coding and/or decoding a data stream, in particular consisting of up to 24Bit wide R[ed]G[reen]B[lue] video signals, and a corresponding method in such a way that an efficient DC-balanced coding and/or decoding is possible, in particular with the lowest possible overheads, according to the invention at least one coder (10) having five 5b/6b coder blocks (20) arranged parallel to one another and having a 2b/2b coder block (30) parallel to the 5b/6b coder blocks (20), and/or at least one decoder (60) having five 6b/5b decoder blocks (70) arranged parallel to one another and having a 2b/2b decoder block (80) arranged parallel to the 6b/5b decoder blocks (70) are provided.
Abstract:
The invention relates to a device (100a, 100b, 100c, 100d, 100e, 100f) for coupling optical signals into at least one waveguide (10), which device comprises at least one electro-optical converter (28), which emits the optical signals in the direction of the axis or of the core (12) of the waveguide (10). In order to further develop said device in such a way that active alignment of the waveguide (10) is not required, the receiving-side optical subassembly (80) according to the comprises at least one guide channel (86) for aligning the waveguide (10) in relation to the optoelectrical converter (68), in particular in relation to the inlet opening or active surface (70) of the electro-optical converter (68), and the optoelectrical converter (68) is accommodated, in particular embedded, in at least one receiving-side optical subassembly (80). The same applies, accordingly, to a device (140) for coupling optical signals out of at least one waveguide (10).
Abstract:
The invention relates to a device (100a, 100b, 100c, 100d, 100e, 100f) for coupling optical signals into at least one waveguide (10), which device comprises at least one electro-optical converter (28), which emits the optical signals in the direction of the axis or of the core (12) of the waveguide (10). In order to further develop said device in such a way that active alignment of the waveguide (10) is not required, the receiving-side optical subassembly (80) according to the comprises at least one guide channel (86) for aligning the waveguide (10) in relation to the optoelectrical converter (68), in particular in relation to the inlet opening or active surface (70) of the electro-optical converter (68), and the optoelectrical converter (68) is accommodated, in particular embedded, in at least one receiving-side optical subassembly (80). The same applies, accordingly, to a device (140) for coupling optical signals out of at least one waveguide (10).
Abstract:
In order to be able to receive any digital optical signal (S) in the bandwidth range from zero bits per second to the high Gbits/second range with as little circuit complexity as possible and to be able to process said signals with the least possible energy requirement for reprocessing, the invention specifies a circuit configuration (E) and a method for receiving digital optical signals (S) by means of at least one light-receiving component (PD) connected upstream of at least one signal input port (PIN-Signal), particularly by means of at least one photodiode, wherein the unipolar current signal (IPD) coming from the light-receiving component (PD) through the signal input port (PIN signal) is transformed into a bipolar current signal (IPD-IDC) by means of a compensation current (IDC)provided by at least one current source (IDAC), the value of said current being defined by means of at least one digital register (MM, MC).
Abstract:
The invention relates to a device (100a, 100b, 100c, 100d, 100e, 100f, 100g) which is provided for coupling optical signals into at least one waveguide (10) and which has at least one electro-optical converter (28), which emits the optical signals in the direction of the axis or of the core (12) of the weaveguide (10). The problem addressed by the invention is that of further developing the device such that an active alignment of the waveguide (10) is not required. This problem is solved in that the electro-optical converter (28) is received, in particular embedded, in at least one emission-side optical sub-assembly (40), the emission-side optical sub-assembly (40) has at least one guide channel (46) for aligning the waveguide (10) in relation to the electro-optical converter (28), in particular in relation to the emission opening or active surface (30) of the electro-optical converter (28), and at least one expansion (90) provided for alignment of the waveguide (10) in relation to the guide channel (46) is allocated to the emission-side optical sub-assembly (40), in particular to the guide channel (46). The invention further relates correspondingly to a device (140a, 140b, 140c, 140d, 140e, 140f, 140g) for decoupling optical signals out of at least one waveguide (10).
Abstract:
Circuit arrangement (CR; CR') for receiving multilevel optical signals (SI) from at least one optical guide (GU), said multilevel signals resulting from superposing a high speed data signal and a low speed data signal, said circuit arrangement (CR; CR') comprising: • - at least one light-receiving component (PD) for converting the optical signals (SI) into electrical current signals (Ipp), • - at least one transimpedance amplifier (TA), being provided with the electrical current signals (I pp) from the light-receiving component (PD), • - at least one automatic gain controller (AG) for controlling the gain or transimpedance (R) of the transimpedance amplifier (TA), in particular in order to keep the amplitude of the output (V out- data-analog) of the transimpedance amplifier (TA) to a desired, for example constant, level for different levels of the electrical current signals (I PD), • - at least one integrator (IN) in a feedback path (FP), said integrator (IN) generating a control signal (Vint), • - at least one voltage-controlled current source (CS), being provided with the control signal (V int) from the integrator (IN), • - at least one limiter (LI) acting as a comparator and generating in its output a logic level for positive or negative voltages in its input, • - at least one second transimpedance amplifier (TA2) arranged in parallel to the transimpedance amplifier (TA), and • - at least one automatic offset controller (AO) for setting the voltage (Voffset) for the second transimpedance amplifier (TA2).