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公开(公告)号：US6433718B2
公开(公告)日：2002-08-13
申请号：US77268601
申请日：2001-01-30
Applicant: ERICSSON TELEFON AB L M
Inventor： STRINNHOLM DANIEL
CPC classification number: H04L27/2626 , H04L27/2607
Abstract: A D/A conversion system includes means for arranging a stream of digital samples into frames, each frame including a guard time period. Means are provided for determining a measure of the overall magnitude of digital samples in each frame. Means increase the magnitude of all samples of frames that have a measure that falls below a predetermined threshold by shifting the samples a common number of bits. A D/A converter converts frames with shifted and frames with unshifted samples. An attenuator attenuates the D/A converted samples of frames with shifted samples to compensate for the magnitude increase.
Abstract translation: D / A转换系统包括用于将数字样本流布置成帧的装置，每个帧包括保护时间段。 提供了用于确定每帧中的数字样本的总体幅度的量度的装置。 意味着通过将样本移位一个公共位数来增加具有低于预定阈值的度量的帧的所有采样的幅度。 D / A转换器转换带有移位的帧和具有未移位样本的帧。 衰减器衰减具有移位样本的D / A转换样本，以补偿幅度增加。
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公开(公告)号：US3927378A
公开(公告)日：1975-12-16
申请号：US38736373
申请日：1973-08-10
Applicant: ERICSSON TELEFON AB L M
Inventor： FJALLBRANT TORE TORSTENSSON
Abstract: A demodulator for the demodulation of sampled signals which resulted from the periodically varying sampling of an analog signal comprises a summing circuit, a feedback circuit and a lowpass filter. The input of the demodulator is connected to one input of the summing circuit, the low-pass filter is connected between the output of the summing circuit and the output of the demodulator and the feedback circuit is connected between the low-pass filter and the input of the summing circuit. Samples corresponding to excluded samples in the sampling patterns of the signals fed to the demodulator as compared with sampling patterns of uniformly occurring sampled signals are transferred to the summing circuit via the feedback circuit.
Abstract translation: 用于解调由模拟信号的周期性变化的采样产生的采样信号的解调器包括加法电路，反馈电路和低通滤波器。 解调器的输入连接到求和电路的一个输入端，低通滤波器连接在求和电路的输出端和解调器的输出端之间，反馈电路连接在低通滤波器和输入端 的求和电路。 与均匀发生的采样信号的采样模式相比，馈送到解调器的信号的采样模式中的排除样本的样本经由反馈电路传送到求和电路。
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公开(公告)号：US3905590A
公开(公告)日：1975-09-16
申请号：US45748974
申请日：1974-04-03
Applicant: ERICSSON TELEFON AB L M
Inventor： BRUNBERG KARL GUNNAR
CPC classification number: H01H50/58 , H01H50/641 , H01H50/643
Abstract: The invention relates to contact-spring-sets which are included in very quick switching operations. In order to avoid contact vibrations the two contact springs in a make-contact are pressed against one another with help of a two-armed lever pivoting so that the arms operate each one of the contact springs and press them together.
Abstract translation: 本发明涉及包含在非常快速的切换操作中的接触弹簧组。 为了避免接触振动，辅助触点中的两个接触弹簧通过双臂杠杆枢转而彼此压靠，使得臂操作每个接触弹簧并将它们压在一起。
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4.发明授权Telecommunication cable particularly paired cable with improved relative crosstalk properties for certain pairs 失效电信电缆特别配对的电缆，具有改进的某些配对的相对的CROSSTALK特性
公开(公告)号：US3821465A
公开(公告)日：1974-06-28
申请号：US33413773
申请日：1973-02-20
Applicant: ERICSSON TELEFON AB L M
Inventor： KARLSTEDT S
CPC classification number: H01B11/04
Abstract: A paired or quadded telecommunication cable have conductors arranged in groups. One pair or quad within each group does not change place and is shielded by the other pairs or quads within the group resulting in a high relative freedom of crosstalk.
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公开(公告)号：US3812575A
公开(公告)日：1974-05-28
申请号：US30883272
申请日：1972-11-22
Applicant: ERICSSON TELEFON AB L M
Inventor： HEDMAN J
CPC classification number: H04R31/006 , H04R19/016 , Y10T29/49005 , Y10T29/49226
Abstract: The invention relates to a procedure for manufacture of an electret microphone comprising a fixed electrode and a movable electrode, the movable electrode comprising a first plastic film which is metallized and a second plastic film which is electrostatically polarized. According to the invention, there are a first processing stage in which the first and second plastic films are metallized and polarized respectively and a second processing stage in which the metallized plastic film, the polarized plastic film and the fixed electrode are assembled together.
Abstract translation: 本发明涉及一种制造驻极体麦克风的方法，该驻极体麦克风包括固定电极和可动电极，该可动电极包括金属化的第一塑料薄膜和电静电极化的第二塑料薄膜。 根据本发明，存在第一和第二塑料膜分别金属化和极化的第一处理阶段和金属化塑料膜，偏振塑料膜和固定电极组装在一起的第二处理阶段。
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Patent Agency Ranking6.发明授权Arrangement to keep the range of control of a control element within desired limits 失效安排在所要求的范围内保持控制元件的范围
公开(公告)号：US3766486A
公开(公告)日：1973-10-16
申请号：US3766486D
申请日：1972-06-12
Applicant: ERICSSON TELEFON AB L M
Inventor： OUVRIER F
CPC classification number: H03G3/005
Abstract: An arrangement to keep the range of control of a control element within desired limits especially for signal level regulation by means of a pilot signal, for example, in the repeaters of a carrier frequency system in which a control signal dependent on the amplitude of the pilot signal sets a control element which determines the amplification of the respective repeater. The arrangement controls the current which feeds the control element. The arrangement contains a first and a second parallel current branch each containing a voltage divider whose tap is connected to a definite potential through a Zener diode for limiting the current in either direction. The attenuation characteristic of the control element thus has two break points one in the lower part of the range of control and one in the upper part due to the current limitation and the amplification of the repeater becomes constant outside a range determined by the break points.
Abstract translation: 控制元件的控制范围特别适用于借助于导频信号的信号电平调节的装置，例如在载波频率系统的中继器中，其中取决于导频的幅度的控制信号 信号设置控制元件，其确定各个中继器的放大。 该装置控制馈送控制元件的电流。 该装置包括第一和第二并联电流分支，每个分支包含分压器，其分接器通过齐纳二极管连接到一定电位，以限制任一方向上的电流。 因此，由于电流限制，控制元件的衰减特性在控制范围的下部有一个断点，在上部有一个断点，并且中继器的放大在由断点确定的范围之外变得恒定。
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公开(公告)号：US3761884A
公开(公告)日：1973-09-25
申请号：US3761884D
申请日：1971-11-04
Applicant: ERICSSON TELEFON AB L M
CPC classification number: G06F13/4291 , G06F1/14
Abstract: A synchronizing apparatus in a data system comprising a number of individual computers each of which includes a binary counter. The synchronization implies that a predetermined value should be stored in certain positions in counters in all the computers. A synchronizing signal is sent on a common line interconnecting all the computers from the computer which operates more rapidly than the other computers of the system and when reaching the predetermined value in the associated counter, this signal being fed is all the other counters in order to set these counters to such predetermined value.
Abstract translation: 数据系统中的同步装置，包括多个单独的计算机，每个计算机包括二进制计数器。 同步意味着在所有计算机中的计数器中的某些位置中应该存储预定值。 在同一信号线上发送同步信号，该公共线路将来自计算机的所有计算机相互连接，该计算机的操作比系统的其他计算机更快速地运行，并且当达到相关计数器中的预定值时，被馈送的该信号是所有其他计数器，以便 将这些计数器设置为这样的预定值。
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公开(公告)号：US3757132A
公开(公告)日：1973-09-04
申请号：US3757132D
申请日：1972-03-24
Applicant: ERICSSON TELEFON AB L M
Inventor： NILSSON L
Abstract: The invention refers to an apparatus for the detection of rectangular pulses in which the duration of the leading edge and the trailing edge respectively is constant whereas the peak amplitude can fluctuate. The apparatus includes a comparison circuit that compares the instantaneous amplitude of the rectangular pulses with the amplitude of a reference voltage and which upon equality between the levels of the amplitudes being compared delivers an indicating pulse. According to the invention, the reference voltage is, during the leading edges formed by the output voltage from a differentiating circuit which is fed with the rectangular pulses and which during each of their leading edges delivers an output voltage the time function of which has such a predetermined intersection point with the time function of the leading edge that the amplitude value at the intersection point equals a selected fraction of the peak amplitude of the rectangular pulse.
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公开(公告)号：US3732499A
公开(公告)日：1973-05-08
申请号：US3732499D
申请日：1971-05-20
Applicant: ERICSSON TELEFON AB L M
Abstract: This invention relates to a method of processing pulse like signals at the transmitter and receiver ends of a transmission medium so that the slope of the flanks of the transmitted pulses exceeds those transmittable by known methods by a medium with a limited band width. This is achieved by superposing overshoots on the pulses at the transmitter end of the transmission medium. These overshoots which have a frequency within the transmission band of the medium and consequently can be transmitted undistorted by the medium contain information about the slope of the flanks and amplitude of the original pulses at the transmitter end. These overshoots are then separated from the transmitted distorted pulses at the receiver end and a reshaping of the pulses is accomplished upon which frequency components are obtained from the overshoots, the amplitude and the time- and phase position of which have such values that the frequency components together with the transmitted distorted pulses form new pulses which well conform to the original pulses.
Abstract translation: 本发明涉及一种在传输介质的发射机和接收机端处理类似脉冲的信号的方法，使得传输脉冲的侧面的斜率超过可通过已知方法通过具有有限带宽的介质传输的斜率。 这通过在传输介质的发射器端的脉冲上叠加过冲来实现。 在介质的传输频带内具有频率并且因此能够由介质无畸变地传输的这些过冲包含关于侧面的斜率和在发射机端的原始脉冲幅度的信息。 然后将这些过冲与接收端处的发送的失真脉冲分离，并且实现脉冲的重新整形，在该频率分量从过冲获得时，其幅度和时间和相位位置具有这样的值，即频率分量 与发送的失真脉冲一起形成与原始脉冲非常吻合的新脉冲。
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公开(公告)号：US3711628A
公开(公告)日：1973-01-16
申请号：US3711628D
申请日：1971-02-03
Applicant: ERICSSON TELEFON AB L M
Inventor： HANSSON H
Abstract: A sleeve joint for aluminum sheathed cable, particularly when jointing signal telephone and power cables, comprises an aluminum tube whose interior diameter is somewhat larger than the exterior diameter of the aluminum sheathed cable. Both ends of the tube are provided with slots forming a number of tongues which are deformable so that their extremities can be bent down to bear against the sheathed cable. The tongues and the continuous part of the tube are coated on their inside as well as their outside surfaces with a wiping solder consisting of lead, tin, zinc and antimony in special proportions.
Abstract translation: 用于铝护套电缆的套筒接头，特别是在连接信号电话和电力电缆时，包括铝管，其内径略大于铝护套电缆的外径。 管的两端设置有形成多个可变形的舌片的槽，使得它们的末端可以向下弯曲以承受护套电缆。 用特殊比例的铅，锡，锌和锑组成的擦拭焊料将舌片和连续部分涂覆在其内部及其外表面上。
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