Apparatus including sampling and quantizing means for discriminating received digital signals
    1.
    发明授权
    Apparatus including sampling and quantizing means for discriminating received digital signals 失效
    设备包括采样和量化手段,用于分辨接收到的数字信号

    公开(公告)号:US3648248A

    公开(公告)日:1972-03-07

    申请号:US3648248D

    申请日:1970-06-08

    CPC classification number: H01B17/145 H04L5/04 H04L25/068

    Abstract: A device for processing digital pulse code modulated signals comprises means for sampling and quantizing the signal at a frequency which is a multiple of that at which the digits are transmitted. These samples are stored and summed after each sampling operation. The result of the summing is fed to reference threshold devices to generate the requisite parameters for the control of the receiver, by means of logic circuits.

    Abstract translation: 用于处理数字脉冲编码调制信号的装置包括用于以与传送数字的倍数相同的频率对信号进行采样和量化的装置。 这些样品在每次取样操作后存储和相加。

    2.
    发明专利
    未知

    公开(公告)号:GR77474B

    公开(公告)日:1984-09-24

    申请号:GR830171481

    申请日:1983-05-27

    Applicant: THOMSON CSF

    Abstract: A radio communications system comprising at least one master station and a plurality of slave stations in two-way frequency-hopping communication therewith. For telephony, speech is digitally encoded. Digital data is transmitted in packets using successive bursts at different frequencies separated by intervals of silence. Each slave station has its own frequency-hopping pattern independent of the patterns of the other slave stations but sharing a common pool of available frequencies. The master stations are capable of generating any of the slave station patterns instantly. The master stations broadcast network time information for synchronization purposes, and the slave station patterns are determined by a combination of a slave station identification number and network time.

    AUTOMATIC GAIN CONTROL DEVICE
    4.
    发明专利

    公开(公告)号:AU4100578A

    公开(公告)日:1980-05-01

    申请号:AU4100578

    申请日:1978-10-24

    Applicant: THOMSON CSF

    Abstract: A circuit determines whether the signal transmitted by a variable-gain amplifier comprises information or not. If it comprises information, its level is regulated, by comparison with a first reference signal, in order to give a predetermined correct listening level at the output of the receiver. If it does not comprise any, its level is regulated, by comparison with a second reference signal, in order to give at the output of the receiver the listening level corresponding to the hearing threshold.

    5.
    发明专利
    未知

    公开(公告)号:DE2846234A1

    公开(公告)日:1979-04-26

    申请号:DE2846234

    申请日:1978-10-24

    Applicant: THOMSON CSF

    Abstract: A circuit determines whether the signal transmitted by a variable-gain amplifier comprises information or not. If it comprises information, its level is regulated, by comparison with a first reference signal, in order to give a predetermined correct listening level at the output of the receiver. If it does not comprise any, its level is regulated, by comparison with a second reference signal, in order to give at the output of the receiver the listening level corresponding to the hearing threshold.

    STATIONS FOR RADIOELECTRIC TRANSMISSION

    公开(公告)号:AU1975476A

    公开(公告)日:1978-05-25

    申请号:AU1975476

    申请日:1976-11-18

    Applicant: THOMSON CSF

    Abstract: Stations allowing the use of directional antennas for multiple connections between a master station and each one of subordinate stations. The antenna of a master station M rotates uniformly. When it is directed towards a subordinate station S, the informations to be transmitted, compressed to this end, are transmitted bilaterally. The expansion of the compressed information received takes place regularly. If the stations are mobile, the antennas of the stations S are equipped with an acquisition and servosystem keeping it directed towards the station M.

    8.
    发明专利
    未知

    公开(公告)号:DK233883A

    公开(公告)日:1983-11-28

    申请号:DK233883

    申请日:1983-05-25

    Applicant: THOMSON CSF

    Abstract: A frequency jump radiocommunications system fixed station in which n receivers and n channels may be connected to p transmitters; p being less than n. A management circuit is provided on each of the n channels to provide signals indicating the active/nonactive state of each channel. A time/frequency law generator is provided on each channel to generate the jumped frequency signals. A general control circuit receives the active/nonactive signals and provides a connection control signal and provides a connection control signal assigning one of the n channels to one of the p transmitters. The general control circuit also generates a transmission authorization signal to authorize the p transmitters to transmit. The connection control signal is received at first and second connection matrices. The first connection matrix connects one of the n channels to one of the p transmitters and the second matrix connects one of the n time frequency law generators to one of the p transmitters, as designated by the connection control signal.

    9.
    发明专利
    未知

    公开(公告)号:DK233783A

    公开(公告)日:1983-11-28

    申请号:DK233783

    申请日:1983-05-25

    Applicant: THOMSON CSF

    Abstract: A radio communications system comprising at least one master station and a plurality of slave stations in two-way frequency-hopping communication therewith. For telephony, speech is digitally encoded. Digital data is transmitted in packets using successive bursts at different frequencies separated by intervals of silence. Each slave station has its own frequency-hopping pattern independent of the patterns of the other slave stations but sharing a common pool of available frequencies. The master stations are capable of generating any of the slave station patterns instantly. The master stations broadcast network time information for synchronization purposes, and the slave station patterns are determined by a combination of a slave station identification number and network time.

    10.
    发明专利
    未知

    公开(公告)号:DK233783D0

    公开(公告)日:1983-05-25

    申请号:DK233783

    申请日:1983-05-25

    Applicant: THOMSON CSF

    Abstract: A radio communications system comprising at least one master station and a plurality of slave stations in two-way frequency-hopping communication therewith. For telephony, speech is digitally encoded. Digital data is transmitted in packets using successive bursts at different frequencies separated by intervals of silence. Each slave station has its own frequency-hopping pattern independent of the patterns of the other slave stations but sharing a common pool of available frequencies. The master stations are capable of generating any of the slave station patterns instantly. The master stations broadcast network time information for synchronization purposes, and the slave station patterns are determined by a combination of a slave station identification number and network time.

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