摘要:
Disclosed is an information distribution system capable of distributing high quality data without lowering throughput of a network even in a communication area where many movable bodies could be traveling. The information distribution system comprises a radio transmission unit for transmitting data signals at a transmission rate being variable; a detection unit for detecting speed control information for a mobile object having a receiver for receiving data signals transmitted without wires from the radio transmission unit; and a transmission rate setting unit for changing the transmission rate of the data signals according to the speed control information.
摘要:
A semiconductor device includes an interlevel film constituted by a first dielectrics film containing dangling bonds and a bonded group of Si and hydrogen, and a second dielectrics film formed on the first dielectrics film.
摘要:
In recording an object image by the image pickup device body, the position detection means detects the present location of the image pickup device body to record the resulting position data at the same time when the object image is recorded onto the image recording medium by the recording means.
摘要:
A GPS receiver and related method for positioning on the Globe. The GPS receiver receives satellite signals in a sequential manner with a plurality of antennas, whereby any of the plurality of antennas which receives satellite signals from the maximum number of GPS satellites is selected by an antenna switching unit under the control of a control unit, a combination of GPS satellites having the smallest PDOP value or the signal strength in due order is selected by the control unit from among all of GPS satellites in contact with respective antennas when each of the antennas fails to receive satellite signals transmitted by the predetermined minimum number of GPS satellites. The related positioning method is for use with a motor vehicle-mounted GPS receiver having a plurality of receiving channels, wherein each receiving channel independently receives satellite signals from the GPS satellites in contact, a required number of GPS satellites which are currently considered to be the most suitable for positioning in view of PDOP value are selected from among all of GPS satellites in contact through each receiving channel, and thereby a GPS satellite other than the selected ones may be substituted for the obstructed GPS satellite for carrying out the positioning by making use of navigation data of the newly selected GPS satellite without any intermission.
摘要:
A communications system for identifying a responding station called by a communications system caller station over a call channel and a plurality of speech channels. The system transmits information from the caller station, such as the selected speech channel and the designated responding station through the call channel, and receives information from a responding station on the selected speech channel. The communication between the communications system and the responding station on the selected speech channel is enabled only when information from the responding station is identical to information of the designated responding station transmitted from the communications system.