Abstract: A control equipment with a built-in communication apparatus is provided which realizes a delay required for communication without a software intervention while at the same time reducing a load of the communication processing. The control equipment with a communication apparatus includes: a communication device to communicate with a plurality of destinations; and a decision device to determine a mode requiring a reception completion interrupt and a mode not requiring the reception completion interrupt. If the decision device decides that the reception completion interrupt is not necessary, the communication device transmits data to one or more destinations and also virtually transmits data to a second destination different from the first intended destination.

Abstract: A control equipment with a built-in communication apparatus is provided which realizes a delay required for communication without a software intervention while at the same time reducing a load of the communication processing. The control equipment with a communication apparatus includes: a communication device to communicate with a plurality of destinations; and a decision device to determine a mode requiring a reception completion interrupt and a mode not requiring the reception completion interrupt. If the decision device decides that the reception completion interrupt is not necessary, the communication device transmits data to one or more destinations and also virtually transmits data to a second destination different from the first intended destination.

Abstract: The present invention aims at providing a technique capable of supervising and controlling optical repeaters, without affecting transmission characteristics and wavelength bands of signal lights, by utilizing the Raman effect. To this end, the present invention provides a supervisory controlling system of an optical repeater, in an optical amplifying-and-repeating transmission system for amplifying and repeatingly transmitting signal light propagated through an optical transmission path by the optical repeater, wherein the supervisory control signal light is amplified due to the Raman effect by the signal light acting as excitation light in an optical transmission path (Raman amplifying medium), to thereby supervise and control the optical repeater in accordance with the thus Raman amplified supervisory control signal light.

Abstract: The present invention aims at providing a technique capable of supervising and controlling optical repeaters, without affecting transmission characteristics and wavelength bands of signal lights, by utilizing the Raman effect. To this end, the present invention provides a supervisory controlling system of an optical repeater, in an optical amplifying-and-repeating transmission system for amplifying and repeatingly transmitting signal light propagated through an optical transmission path by the optical repeater, wherein the supervisory control signal light is amplified due to the Raman effect by the signal light acting as excitation light in an optical transmission path (Raman amplifying medium), to thereby supervise and control the optical repeater in accordance with the thus Raman amplified supervisory control signal light.

Abstract: There are provided a polarized light passing device to pass therethrough specific polarized light, of output light of a polarization scrambler; and a detecting unit to detect a modulation component according to a frequency of a polarization control signal from the light which passes through the polarized light passing device.

Abstract: An optical disk has a lead-in region provided at the inner circumference side and a user region provided at the outer circumference side. Pit string 3 of pits of different depths is formed in the lead in region. Light beam reflected from the pit string is detected by detector and TPP and RF signals are output by differential amplifier and addition amplifier. A ternary signal is restored from pits based on the TPP and RF signals. Information is recorded by pits of the same depth in the user region. Recording information in the depth direction in the lead-in region increases the recording capacity thereof. The information recorded in the depth direction in the lead-in region cannot be transferred to a user region of another optical disk.

Abstract: WDM optical tranmsmission equipment with redundant configuration includes a plurality of tranmitters. Each tranmitter includes active and standby panels including active and standby optical transmission circuits respectively having active and standby attenuators for controlling an attenuation amount of each output of the active and standby optical transmission circuits; and a coupler combining the outputs of the active and standby attenuators.

Abstract: A control equipment with a built-in communication apparatus is provided which realizes a delay required for communication without a software intervention while at the same time reducing a load of the communication processing. The control equipment with a communication apparatus comprises: a communication means to communicate with a plurality of destinations; and a decision means to determine a mode requiring a reception completion interrupt and a mode not requiring the reception completion interrupt; wherein if the decision means decides that the reception completion interrupt is not necessary, the communication means transmits data to one or more destinations and also virtually transmits data to a second destination different from the first intended destination.

Abstract: A thermal air flow rate measuring apparatus of great precision wherein sensitivity is enhanced by sensors having different output characteristics and an operating device employing a digitized signal. The sensitivity and temperature can be corrected easily depending on the flow direction of fluid. The measuring apparatus includes at least one heating resistor disposed in a gas fluid, temperature detecting resistors formed at an upstream part and a downstream part of the heating resistor in the flow direction of the fluid, a device for outputting at least two signals relating to the flow rate of the fluid, a quantizing device for quantizing the output values, and an operating device for operating the flow rate based on the quantized signals.

Abstract: Communication system of a group robot system is made hierarchical, having a base station as an uppermost layer and a plurality of layers formed by a plurality of sensing robots, and the plurality of sensing robots are controlled such that a sensing robot belonging to an upper layer of the hierarchical structure has higher sensing resolution than a sensing robot belonging to a lower layer of the hierarchical structure. Thus, a group robot system capable of efficiently searching for an object can be obtained.

Abstract: An optical disk has a lead-in region provided at the inner circumference side and a user region provided at the outer circumference side. Pit string 3 of pits of different depths-is-formed-in-the-lead-in-region. Light beam reflected from the pit string is detected by detector and TPP and RF signals are output by differential amplifier and addition amplifier. A ternary signal is restored from pits based on the TPP and RF signals. Information is recorded by pits of the same depth in the user region. Recording information in the depth direction in the lead-in region increases the recording capacity thereof The information recorded in the depth direction in the lead-in region cannot be transferred to a user region of another optical disk.

Abstract: Communication system of a group robot system is made hierarchical, having a base station as an uppermost layer and a plurality of layers formed by a plurality of sensing robots, and the plurality of sensing robots are controlled such that a sensing robot belonging to an upper layer of the hierarchical structure has higher sensing resolution than a sensing robot belonging to a lower layer of the hierarchical structure. Thus, a group robot system capable of efficiently searching for an object can be obtained.

Abstract: On an optical disk, a string of a plurality of pits having two different depths is formed. Quantity of light reflected from the pit string is detected by a photoreceptor element, and based on the detected quantity of reflected light, a pit depth detecting unit detects depth of each pit. Based on the detected quantity of reflected light, a servo signal generating unit generates a tracking servo signal. An output control unit supplies the generated tracking servo signal when a pit of such depth that is to be reproduced is tracked, and holds and supplies an immediately preceding tracking servo signal when a pit of different depth is being tracked, based on the result of detection by the pit depth detecting unit.

Abstract: Communication system of a group robot system is made hierarchical, having a base station as an uppermost layer and a plurality of layers formed by a plurality of sensing robots, and the plurality of sensing robots are controlled such that a sensing robot belonging to an upper layer of the hierarchical structure has higher sensing resolution than a sensing robot belonging to a lower layer of the hierarchical structure. Thus, a group robot system capable of efficiently searching for an object can be obtained.

Abstract: An optical amplifying apparatus has a plurality of pumping sources generating pumping light beams at different wavelengths, a Raman amplification medium receiving the pumping light beams from the pumping sources to amplify a main signal light beam by using stimulated Raman scattering phenomenon due to the pumping light beams, a rare-earth-doped optical amplification medium receiving the main signal light beam amplified by the Raman amplification medium to further amplify it, and a pumping light introducing means introducing a part or all of a pumping light beam at a specific wavelength of the pumping light beams as a pumping light beam for the rare-earth-doped optical amplification medium to the rare-earth-doped optical amplification medium. The optical amplifying apparatus in a smaller size and with less fluctuation in the optical output power can readily send monitoring control information irrespective of presence of the optical input power.

Abstract: An optical disk has a lead-in region provided at the inner circumference side and a user region provided at the outer circumference side. Pit string 3 of pits of different depths is formed in the lead-in region. Light beam reflected from the pit string is detected by detector and TPP and RF signals are output by differential amplifier and addition amplifier. A ternary signal is restored from pits based on the TPP and RF signals. Information is recorded by pits of the same depth in the user region. Recording information in the depth direction in the lead-in region increases the recording capacity thereof. The information recorded in the depth direction in the lead-in region cannot be transferred to a user region of another optical disk.

Abstract: An optical disk 100 is provided with a hub 3 at the central portion of a substratel. A relationship Y/X?0.015, preferably Y/X?0.05 is satisfied where X is the projected area of the substrate 1 and Y is a contact area between the hub 3 and the substrate 1. As result, no slippage occurs between the hub 3 and the substrate 1 even when they are rotated at high speed than conventional. With this higher rotational speed, the data transfer rate is improved, and irregular rotation and the camming are suppressed, thereby reducing tracking errors and write/read errors.