Abstract: This aims to provide a signal status diagnosing device for an external control means, which is enabled even by a simple constitution to prevent the rise of a production cost due to the increase in a parts count or the complexity of a circuit constitution, and which can perform a signal status diagnosis of an actuator (the external control means) such as an electromagnetic valve, a lamp, a relay or a small-sized DC motor precisely. The signal status diagnosing device comprises a switch circuit connected with an intermediate tap disposed on the primary side of a transformer, for sending a driving electric power to the external control means disposed on the secondary side, in response to an ON/OFF signal of the external control means, and a means connected with the switch circuit and driven by the external control means, for measuring the primary side electric current to flow in a manner to correspond to the electric current to flow to the transformer secondary side.

Abstract: Provided is an operation status diagnosing device for an external control means, which is enabled by a simple constitution to perform the transmission of the drive status of an external control means constituted of either a relay contact to be activated by an ON/OFF signal or an ON/OFF means made of a semiconductor, and the transmission of a signal indicating the occurrence of troubles such as disconnection or shorting of a wiring line and the transmission of an electric power by a common means, thereby to prevent the rise of a production cost due to the increase in a parts count or the complexity of a circuit constitution and to diagnose the transmission of the signal and the soundness of the circuit precisely.

Abstract: Provided is a signal status diagnosing device for a control actuator, which is enabled by a simple constitution to perform the transmission of the status of a drive signal in a control actuator, the transmission of a signal indicating the occurrence of troubles such as disconnection or shorting of a wiring line, and the transmission of an electric power by a common means, thereby to prevent the rise of a production cost due to the increase in a parts count or the complexity of a circuit constitution and to diagnose the transmission of the measurement result and the soundness of the circuit precisely.

Abstract: An object is to provide a light-source lamp capable of reducing consumption power while ensuring a certain luminance level and a projector using the light-source lamp. This light-source lamp 1 gathers light from a light source at a lens for emission. The light sources 3, 6 are formed of a plurality of arranged light-emitting diodes 32, 62, and the light sources 3, 6 are driven with pulse-width modulation control of the light-emitting diodes 32, 62. With this, compared with a configuration in which the light sources 3, 6 are subjected to analog control, consumption power of the lamp can be reduced while ensuring a certain luminance level lm.

Abstract: This aims to provide a diagnosing device for detecting the measurements of an electric current, a voltage and a resistance by a temperature/moisture or pressure sensor or a signal state in control means, precisely with a simple circuit constitution, for diagnosing the soundness of a circuit while simplifying a power source circuit, to suppress the cost more than the conventional circuit having no diagnosing function, and for diagnosing the signal status in the measurement or control by a measuring means or a control means. An alternating voltage generating means containing a pulse-wave voltage and an alternating current is connected with the primary side of a transformer, and a driven member such as the measuring means for any of varying electric current, voltage and resistance is connected with the secondary side.

Abstract: An object is to provide a light-source lamp capable of reducing consumption power while ensuring a certain luminance level and a projector using the light-source lamp. This light-source lamp 1 gathers light from a light source at a lens for emission. The light sources 3, 6 are formed of a plurality of arranged light-emitting diodes 32, 62, and the light sources 3, 6 are driven with pulse-width modulation control of the light-emitting diodes 32, 62. With this, compared with a configuration in which the light sources 3, 6 are subjected to analog control, consumption power of the lamp can be reduced while ensuring a certain luminance level lm.

Abstract: Data is transmitted certainly even if some trouble happens on one of the communicating lines and masking effect of the information is enhanced. In the case that data including A, B and C stored in a device at a place transmits to another device 20 located at a different place, communicating lines including at least three lines are connected and divided data portions AB, BC and CA are transmitted through the communicating lines, respectively.

Abstract: In a servo controller 3a, it is confirmed whether or not the voltages from amplifiers G1 through G3 are within the range of normal performance in the comparators 32a through 32c after alternating current voltages generated individually in a primary coil 22a and secondary coils 23a and 24a of an LVDT 2a are converted into direct current voltages and output from the amplifiers G1 though G3. When a voltage out of the range of normal performance is confirmed in at least one of the comparators 32a through 32c and a high voltage is output, the servo controller 3a is brought into a stand-by state.

Abstract: In a servo controller 3a, it is confirmed whether or not the voltages from amplifiers G1 through G3 are within the range of normal performance in the comparators 32a through 32c after alternating current voltages generated individually in a primary coil 22a and secondary coils 23a and 24a of an LVDT 2a are converted into direct current voltages and output from the amplifiers G1 though G3. When a voltage out of the range of normal performance is confirmed in at least one of the comparators 32a through 32c and a high voltage is output, the servo controller 3a is brought into a stand-by state.

Abstract: A purpose of the invention is to transmit data certainly even if some trouble happens on one of communicating lines and to enhance a masking effect of information. In the case that data including A, B and C stored in a device at a place transmits to another device 20 located at the different place, communicating lines including at least three lines are connected and divided data portion AB, BC and CA is transmitted to the communicating lines, respectively.

Abstract: A purpose of the present invention is to provide a high level compression system so as to improve a data transmitting efficiency. In the case of transmitting data in which a characteristic curve is very important to a remote site, a predetermined number of the above data are collected at a transmitting site 100 so as to dummy-picture the data (S2). The dummy pictured data is highly compressed by a picture compression treatment (S3). The compressed dummy-pictured data is transmitted to the receiving site 200. At the receiving site 200, the received compressed dummy pictured data is recovered to the dummy pictured data (T1). The dummy pictured data is divided into the predetermined number of the parts so that original data can be reproduced.