摘要:
A method for displaying a video stream according to a format defined by a user, wherein a graphic element is superimposed on the displayed video stream, and wherein the dimensions and/or position of the graphic element are modified as a function of commands received from the user, so as to define a screen area in which a certain portion of the frames of the video stream is displayed. The video stream is then displayed in a format wherein, for each frame, the frame portion defined by the graphic element is displayed with altered dimensions and/or position on the screen.
摘要:
A method for displaying a video stream according to a format defined by a user, wherein a graphic element is superimposed on the displayed video stream, and wherein the dimensions and/or position of the graphic element are modified as a function of commands received from the user, so as to define a screen area in which a certain portion of the frames of the video stream is displayed. The video stream is then displayed in a format wherein, for each frame, the frame portion defined by the graphic element is displayed with altered dimensions and/or position on the screen.
摘要:
A cooperative localization process for determining the absolute position of an apparatus to be localized includes a plurality of cooperator apparata able to cooperate, through the exchange of messages and data, in the localization of the apparatus to be localized. The cooperator apparata are equipped with at least one direct, apparatus-to-apparatus radio transmission and reception system for messages and data, and components for estimating the distance between apparata of the set of cooperator apparata. The cooperative localization apparata able to implement this process are also described.
摘要:
A method for estimating the distance (d) of a receiver (102) from a radio transmitter (101) includes the steps of: receiving (602) radio signals (103, 701) irradiated by the transmitter (101), which include components from which at least three tones (1,2,3,4) are extracted, each having a different frequency; measuring (606) a first phase difference (Δφ21) between first two tones (1, 2) of the at least three tones, whose frequencies (f1, f2) have a first spacing, and measuring a second phase difference (Δφ43) between second two tones (3, 4) of the at least three tones, whose frequencies (f3, f4) have a second spacing, wherein one of the first spacing or second spacing is greater than the other; estimating (607, 611, 613) the distance (d) on the basis of the first phase difference (Δφ21) and the second phase difference (Δφ43).
摘要:
A process for transmitting at least one alarm signal from an alarmed apparatus to a PSAP (Public Safety Answering Point, 127), through a system composed of a plurality of cooperating apparatuses (101, 104, 108, 106, 116, 119, 111, 124, 122) includes at least one such alarmed apparatus (101) and at least one responding apparatus, the apparatuses being equipped at least with memory, a processor and a first radio system for direct reception/transmission, from apparatus to apparatus, of signals and data, and the plurality of cooperating apparatus including at least one apparatus (124, 122) equipped with components adapted to transmit the alarm signal to the PSAP (127). An apparatus is also described which is adapted to implement the above process.
摘要:
A method for estimating the distance (d) of a receiver (102) from a radio transmitter (101) includes the steps of: receiving (602) radio signals (103, 701) irradiated by the transmitter (101), which include components from which at least three tones (1,2,3,4) are extracted, each having a different frequency; measuring (606) a first phase difference (Δφ21) between first two tones (1, 2) of the at least three tones, whose frequencies (f1, f2) have a first spacing, and measuring a second phase difference (Δφ43) between second two tones (3, 4) of the at least three tones, whose frequencies (f3, f4) have a second spacing, wherein one of the first spacing or second spacing is greater than the other; estimating (607, 611, 613) the distance (d) on the basis of the first phase difference (Δφ21) and the second phase difference (Δφ43).
摘要:
A method of bi-directional communication in a cellular mobile telecommunication network (2) includes a terminal (10) that receives signals transmitted by at least one radio base station (5,7) of a downlink network of the cellular mobile telecommunication network (2) and selects one serving transmitting radio base station (6) among one or more transmitting (5) or transceiving (7) radio base stations of the downlink network, wherein the downlink network operator selects one serving receiving radio base station (8) among one or more receiving radio base stations (3,7) of an uplink network which have received a signalling message (URRA) transmitted by the terminal (10). By way of the serving receiving base station (8) of the uplink network and the serving transmitting base station (6) of the downlink network, the terminal (10) establishes bi-directional connections over the cellular mobile telecommunication network (2).
摘要:
A process for transmitting at least one alarm signal from an alarmed apparatus to a PSAP (Public Safety Answering Point, 127), through a system composed of a plurality of cooperating apparatuses (101, 104, 108, 106, 116, 119, 111, 124, 122) includes at least one such alarmed apparatus (101) and at least one responding apparatus, the apparatuses being equipped at least with memory, a processor and a first radio system for direct reception/transmission, from apparatus to apparatus, of signals and data, and the plurality of cooperating apparatus including at least one apparatus (124, 122) equipped with components adapted to transmit the alarm signal to the PSAP (127). An apparatus is also described which is adapted to implement the above process.
摘要:
A cooperative localisation process for determining the absolute position of an apparatus to be localized includes a plurality of cooperator apparata able to cooperate, through the exchange of messages and data, in the localisation of the apparatus to be localized. The cooperator apparata are equipped with at least one direct, apparatus-to-apparatus radio transmission and reception system for messages and data, and components for estimating the distance between apparata of the set of cooperator apparata. The cooperative localisation apparata able to implement this process are also described.
摘要:
A method of bi-directional communication in a cellular mobile telecommunication network (2) includes a terminal (10) that receives signals transmitted by at least one radio base station (5,7) of a downlink network of the cellular mobile telecommunication network (2) and selects one serving transmitting radio base station (6) among one or more transmitting (5) or transceiving (7) radio base stations of the downlink network, wherein the downlink network operator selects one serving receiving radio base station (8) among one or more receiving radio base stations (3,7) of an uplink network which have received a signalling message (URRA) transmitted by the terminal (10). By way of the serving receiving base station (8) of the uplink network and the serving transmitting base station (6) of the downlink network, the terminal (10) establishes bi-directional connections over the cellular mobile telecommunication network (2).