Abstract: A receiving device for cooperation with an optical fiber is provided with a sensor (3). The sensor (3) comprises two or more distinct sensor elements (4a, . . . , 4d) delivering an output signal with a strength that depends on the intensity applied to the sensor element (4a, . . . , 4d). A greatest dimension (a) of the sensor element (4a, . . . , 4d) is at most equal to half the diameter of a diffraction-limited spot (5) of the beam (2) exiting the optic fiber (1) at the location of the sensor elements (4a, . . . , 4d). A diametrical dimension (c) of the part of the sensor (3) provided with sensor elements (4a, . . . , 4d) is greater than the diameter of the beam (2) exiting from the optical fiber (1). Means (15) are present for determining the strength of the output signal from each sensor element (4a, . . . , 4d).

Abstract: The invention relates to a color picture camera (1, 31, 41) with a sensor (2) having a surface to image color pictures, which pictures can be converted into electrical signals, a red component of the color picture generating an electrical red value signal (R), a green component of the color picture generating an electrical green value signal (G), and a blue component of the color picture generating an electrical blue value signal (B), which signals are supplied to a parallel/serial converter and an amplifier circuit (42) for a white compensation and a brightness compensation. According to the invention, the amplifier circuit includes a two-stage amplifier (43, 44) with a first amplifier stage (43) for a fine compensation and a second amplifier stage (44) for a coarse compensation.

Abstract: Receiving device for cooperation with an optical fiber and comprising a sensor for converting a signal in the form of a modulated beam outputted by the optical fiber into an electric signal. The sensor comprises two or more mutually separated sensor elements. An output of each sensor element) is coupled to an amplifying element, which is coupled to an analog to digital converter associated with the amplifying element. The sensor elements and the amplifying elements connected thereto are provided on a single semiconductor chip. The analog to digital converters may also be provided on the semiconductor chip. The integrated circuits on the semi conductor chip are clock-controlled and a clock rate for the integrated circuits is lower than a clock rate corresponding to the bit transfer rate of the modulated beam. Means are present for reconstructing the signals in the beam from signals delivered by the sensor elements at the clock rate for the integrated circuits.

Abstract: A receiving device for cooperation with an optical fiber is provided with a sensor (3). The sensor (3) comprises two or more distinct sensor elements (4a, . . . , 4d) delivering an output signal with a strength that depends on the intensity applied to the sensor element (4a, . . . , 4d). A greatest dimension (a) of the sensor element (4a, . . . , 4d) is at most equal to half the diameter of a diffraction-limited spot (5) of the beam (2) exiting the optic fiber (1) at the location of the sensor elements (4a, . . . , 4d). A diametrical dimension (c) of the part of the sensor (3) provided with sensor elements (4a, . . . , 4d) is greater than the diameter of the beam (2) exiting from the optical fiber (1). Means (15) are present for determining the strength of the output signal from each sensor element (4a, . . . , 4d).

Abstract: An image pick-up includes a number of active sensor elements (11; 12; 13; 14) arranged in an array and a number of conductive lines extending over the surface of the array for the transfer of supply and signals. Each sensor element includes a light sensor (20) and an amplifier. According to the invention, a reduction in the number of lines can be achieved while functionality is maintained. In a first and a second embodiment (11; 12), a sensor element includes a first switch (S1) associated with the sensor and a second switch (S2; S3) associated with the amplifier, the switches being controlled by a common control signal. In a third embodiment (13), a sensor element includes a series arrangement of a first switch (S1) and a second switch (S2) included between the sensor and a supply line. In a fourth embodiment (14), a select signal is also used as a supply for the amplifier.

Abstract: A station in a communication bus system is connected to a signal transmission line. The station contains a wave splitter coupled to the transmission line and a transmission section coupled to an input of the wave splitter for transmitting an outgoing wave signal to travel out over the transmission line from the wave splitter. The station contains a reception section coupled to an output of the wave splitter for receiving an incoming wave signal that travels into the wave splitter from the connector. The station has a control unit being arranged to operate in different control modes, according to the presence or absence of a further apparatus connected to the transmission line, dependent on whether the reception section does not detect or does detect a reflection of a wave transmitted by the transmission section, respectively.

Abstract: Receiving device for cooperation with an optical fiber and comprising a sensor for converting a signal in the form of a modulated beam outputted by the optical fiber into an electric signal. The sensor comprises two or more mutually separated sensor elements. An output of each sensor element) is coupled to an amplifying element, which is coupled to an analog to digital converter associated with the amplifying element. The sensor elements and the amplifying elements connected thereto are provided on a single semiconductor chip. The analog to digital converters may also be provided on the semiconductor chip. The integrated circuits on the semi conductor chip are clock-controlled and a clock rate for the integrated circuits is lower than a clock rate corresponding to the bit transfer rate of the modulated beam. Means are present for reconstructing the signals in the beam from signals delivered by the sensor elements at the clock rate for the integrated circuits.

Abstract: A transceiver device (30) for cooperation with an optical fiber (1) comprises a beam generator (32), a semi-transparent element (35) and a sensor (31). The sensor (31) is two-dimensional and position sensitive. Part (44) of the beam (33) generated by the beam generator (32) is sent to the sensor (31). A comparison is made of the position of the beam (44) generated by the beam generator (32) and detected by the sensor (31) with the position of a beam (44) exiting the optical fiber. Means (38) are present for controlling a controllable beam displacing element (39) provided between the beam generator (32) and the semi-transparent element (35), such that the beam (44) generated by the beam generator (32) hits the sensor (31) at the same position as the beam (2) exiting the optical fiber (1).

Abstract: The invention relates to a color picture camera (1, 31, 41) with a sensor (2) on whose sensor surface color pictures can be imaged, which pictures can be converted into electrical signals, a red component of the color picture generating an electrical red value signal (R), a green component of the color picture generating an electrical green value signal (G), and a blue component of the color picture generating an electrical blue value signal (B), which signals are supplied to a parallel/serial converter and an amplifier circuit (42) for a white compensation and a brightness compensation.

Abstract: A station in a communication bus system, is connected to a signal transmission line. The station contain a wave splitter coupled to the transmission line and a transmission section coupled to an input of the wave splitter for transmitting an outgoing wave signal to travel out over the transmission line from the wave splitter. The station contains a reception section coupled to an output of the wave splitter for receiving an incoming wave signal that travels into the wave splitter from the connector. The station has a control unit being arranged to operate in different control modes, according to the presence or absence of a further apparatus connected to the transmission line, dependent on whether the reception section does not detect or does detect a reflection of a wave transmitted by the transmission section respectively.

Abstract: An image pick-up is described which comprises a number of active sensor elements (11; 12; 13; 14) arranged in an array as well as a number of conductive lines extending over the surface of the array for the transfer of supply and signals. Each sensor element comprises a light sensor (20) and an amplifier.