公开(公告)号：US08942376B2

公开(公告)日：2015-01-27

申请号：US13804780

申请日：2013-03-14

申请人： Intel Corporation

发明人： Priyadarsini Devanand

IPC分类号： H04L29/02 ,  G06F21/60 ,  H04L29/06 ,  H04N21/4363 ,  H04N21/4367 ,  H04L9/32 ,  H04L15/24

CPC分类号： G06F21/60 ,  H04L9/321 ,  H04L63/10 ,  H04L63/20 ,  H04L2463/101 ,  H04N21/43635 ,  H04N21/4367

摘要： In one embodiment of the invention, a format for renewability content (e.g., a System Renewability Message (SRM)) corresponding to a content protection protocol (e.g., High-Bandwidth Digital Content Protection (HDCP)) may be interoperable with devices that are compliant with different versions of the standard (e.g., HDCP1.x and 2.x devices) and that include different amounts of storage for the renewability content (e.g., first and second generation devices).

摘要翻译： 在本发明的一个实施例中，对应于内容保护协议（例如，高带宽数字内容保护（HDCP））的可再生性内容（例如，系统可再生消息（SRM））的格式可以与符合标准的设备互操作 具有不同版本的标准（例如，HDCP1.x和2.x设备），并且包括可再生能力内容的不同数量的存储（例如，第一和第二代设备）。

公开(公告)号：US4286112A

公开(公告)日：1981-08-25

申请号：US148107

申请日：1980-05-09

申请人： Gary A. Weiss

发明人： Gary A. Weiss

IPC分类号： H04L12/14 ,  G07C1/10 ,  H04L15/24 ,  H04M15/18

CPC分类号： H04L12/1439 ,  G06Q30/0284 ,  H04L12/14 ,  H04L12/1414

摘要： An apparatus is disclosed for use with teletypewriter consoles in teleprinter communication networks for providing transmission time information during message preparation; namely, the number of whole minutes of message time plus either the number of characters remaining to the next full minute, or tenths of minutes of additional message time used. Such information enables the user to anticipate and thus optimize message time for which he is charged in a rounding-up charge procedure commonly used in such teleprinter communication networks. A preferred embodiment consists of a microprocessor-based computer for converting each character on a perforated tape to a sub-unit of time corresponding to the appropriate transmission rate of either TELEX or TWX network services. A 6-digit display permits the user to observe the actual number of whole minutes and either number of characters to the next whole minute or number of tenths of minutes already used in addition to whole minutes as he is preparing a perforated tape containing the message to be transmitted at a subsequent time. By merely checking the display, the operator may be continuously apprised of the time in minutes and tenths of minutes, or time in whole minutes plus the number of characters remaining until the next whole minute of message time, based on the characters already punched onto the perforated tape. In addition, in the preferred embodiment the user may preset a minimum on-line time to account for time lost during answer-back and signing-off which does not ordinarily constitute actual message time but which is still charged to the user. A keyboard is provided for selecting the appropriate message rate for either TELEX or TWX and for entering the appropriate sign-on and sign-off additional time for which he is charged. A particularly novel feature of the invention, which precludes the need for modifying a teletypewriter console device with which the present invention is to be used, is a photosensor circuit through which perforated tape passes as it emanates from the tape perforating device connected to the teletypewriter console.

公开(公告)号：US4200769A

公开(公告)日：1980-04-29

申请号：US942928

申请日：1978-09-18

申请人： Joachim Heinzl

发明人： Joachim Heinzl

IPC分类号： H04L21/00 ,  H04N1/00 ,  H04N1/032 ,  H04N1/04 ,  H04N1/411 ,  H04N1/413 ,  B41J5/00 ,  G06K15/02 ,  H04L15/24

CPC分类号： H04N1/411 ,  H04L21/00 ,  H04N1/00095 ,  H04N1/032 ,  H04N1/04 ,  H04N1/413 ,  H04N2201/0426

摘要： Predetermined characters or graphic patterns are transmitted from a transmitting station to a receiving station in a system wherein a printing head is provided with at least one printing component in the receiving station and is supplied with binary character sequences which trigger printing commands. The binary character sequences which represent the predetermined characters are stored in the receiving station in a character generator from which the sequences are read following the transmission of data words assigned to the predetermined characters, and are fed to the printing head. When graphic patterns are transmitted, code words are produced in the transmitting station to describe the graphic patterns, which words possess the same format as the data words. The code words are transmitted in place of the data words to the receiving station and in the receiving station the code words are converted into binary character sequences which are fed to the printing head in the place of the binary character sequences emitted from the character generator.

摘要翻译： 在系统中，从发送站向接收站发送预定字符或图形，其中打印头在接收站中设置有至少一个打印部件，并提供触发打印命令的二进制字符序列。 表示预定字符的二进制字符序列被存储在字符发生器中的接收站中，在发送分配给预定字符的数据字之后，从该字符发生器读取序列，并将其馈送到打印头。 当发送图形时，在发送站中产生代码字以描述图形，哪些单词具有与数据字相同的格式。 将代码字代替数据字发送到接收站，而在接收站中，代码字被转换成二进制字符序列，它们被馈送到打印头，代替从字符发生器发出的二进制字符序列。

公开(公告)号：US4076956A

公开(公告)日：1978-02-28

申请号：US670534

申请日：1976-03-25

申请人： Renato Dogliotti ,  Umberto Mazzei

发明人： Renato Dogliotti ,  Umberto Mazzei

IPC分类号： H04L27/38 ,  H04L15/24

CPC分类号： H04L27/38

摘要： In a phase-shift-keying (PSK) signaling system with or without amplitude modulation, using two channel carriers of like frequency in relative phase quadrature to identify one of eight signal levels, each signal level is associated with one of eight equispaced radii emanating from the center of an orthogonal matrix or coordinate system. That matrix is divided by its coordinate axes into four quadrants each encompassing three zones of potential signal deviation, i.e. a middle zone centered on the bisector of the quadrant and two lateral zones whose outer boundaries coincide with those of the quadrant. The signals incoming at a receiver input over the two channels are coherently detected and filtered to supply a pair of coordinates defining a point on the matrix generally falling into one of the three zones of a quadrant; upon conversion into digital form, with six modular bits and one sign bit each, these signals by their modular bits address one of 4,096 cells of a first read-only memory to call forth one of three two-bit combinations stored in these cells. The bit combination so read out identifies the zone -- irrespective of quadrant -- defined by the detected coordinates; these bits, together with the sign bits derived from the incoming signals, address one of 12 cells in a second read-only memory which thereupon delivers a three-bit word indicating the corresponding signal level and, if desired, two collateral multibit words fed back to the receiver input for correcting distortions of the next-following signals.

摘要翻译： 在具有或不具有幅度调制的相移键控（PSK）信令系统中，使用相对相位正交中相似频率的两个信道载波来识别八个信号电平中的一个，每个信号电平与从八分之一发出的八个等间隔半径中的一个相关联 正交矩阵或坐标系的中心。 该矩阵被其坐标轴划分成四个象限，每个象限围绕着三个区域的潜在信号偏差，即以象限的二等分线为中心的中间区域和两个外边界与象限的外边界重合。 在两个通道上的接收机输入端输入的信号被相干地检测和滤波，以提供一对坐标，该坐标定义在矩阵上的点通常落入象限的三个区域之一中; 在转换成数字形式时，每个具有六个模块位和一个符号位，这些信号通过它们的模块位址寻址第一只读存储器的4096个单元之一，以调用存储在这些单元中的三个两位组合之一。 所读取的位组合识别区域 - 无论由检测到的坐标定义的象限如何; 这些位与从输入信号导出的符号位一起寻址在第二只读存储器中的12个单元之一，随后传送指示对应的信号电平的三位字，并且如果需要，反馈两个副载波多位字 到接收机输入端，用于校正下一个跟随信号的失真。

公开(公告)号：US4029904A

公开(公告)日：1977-06-14

申请号：US634769

申请日：1975-11-24

申请人： Roberto Papeschi

发明人： Roberto Papeschi

IPC分类号： H04B1/06 ,  H04B3/04 ,  H04L25/03 ,  H04L25/06 ,  H04L15/24

CPC分类号： H04L25/061

摘要： In a receiver of a transmission system for binary pulse signals whose DC level is disturbed during transmission, an accurate correction of the disturbing DC components is obtained even for pulse signals deviating considerably from the nominal transmission speeds and peak values, by using a correction circuit having two parallel branches between input and output. The first branch includes a capacitor between input and output and the second branch includes a peak detector and a comparator which co-operate for generating a binary decision signal which is applied to the output via a resistor. The AC components of the pulse signals are only passed through the first branch and the DC components inherent in the pulse signals are only passed through the second branch.

摘要翻译： 在传输系统中的直流电平在传输期间被干扰的二进制脉冲信号的传输系统的接收机中，即使对于从标称传输速度和峰值偏离的脉冲信号，也可以通过使用具有 输入和输出之间的两个并行分支。 第一分支包括输入和输出之间的电容器，第二分支包括峰值检测器和比较器，用于产生经由电阻器施加到输出端的二进制判定信号。 脉冲信号的交流分量仅通过第一分支，并且脉冲信号中固有的直流分量仅通过第二分支。

公开(公告)号：US4007330A

公开(公告)日：1977-02-08

申请号：US604085

申请日：1975-08-13

申请人： Michael G. Winters

发明人： Michael G. Winters

IPC分类号： H04L27/18 ,  H04L27/233 ,  H04L15/24

CPC分类号： H04L27/2331

摘要： A phase modulated carrier wave, in which a phase reversal represents one of two binary values is demodulated by sampling at a rate f.sub.s greater than the frequency of the carrier, comparing the phase of each sample with a sample delayed a nominal bit period in one channel, a sample delayed less than the nominal bit period in a second channel, and a sample delayed more than the nominal bit period in a third channel to compensate for positive and negative Doppler shift of the carrier from its nominal frequency in the second and third channels, respectively. A code word is detected in each of the three channels by comparing each demodulated sample bit with a replica of the code word, and correlating the results separately for each channel. The channel with the highest correlation is selected as the one most closely tuned to the carrier frequency received.

摘要翻译： 相位调制载波，其中表示两个二进制值之一的相位反转通过以大于载波频率的fs采样来解调，将每个采样的相位与延迟一个通道中的标称位周期的采样进行比较 ，延迟小于第二通道中的标称位周期的采样，以及在第三通道中延迟大于标称位周期的采样，以补偿载波在第二和第三通道中的标称频率的正和负多普勒频移 ， 分别。 通过将每个解调的采样位与码字的副本进行比较，并将每个通道的结果分别相关，在三个通道的每一个中检测码字。 选择具有最高相关性的信道作为接收到的载波频率最接近的信道。

公开(公告)号：US3936603A

公开(公告)日：1976-02-03

申请号：US507418

申请日：1974-09-19

申请人： John R. Guppy ,  Robin D. Roe

发明人： John R. Guppy ,  Robin D. Roe

IPC分类号： H04L1/20 ,  H04B1/16 ,  G06G7/00 ,  H04L15/24

CPC分类号： H04L1/20

摘要： A digital phase locked loop is described which includes a first gate through which incoming pulses are passed to subsequent data processing circuits, a second gate through which reference pulses having a predetermined pulse repetition rate equal to the repetition rate of the wanted incoming pulses are fed to a reset input of a counter such that each reference pulse resets the counter to zero, and a clock generator for feeding clock pulses to the counter. The counter is thereby repeatedly stepped through a predetermined cycle, the nominal period of the counter cycle being equal to the nominal period of the reference pulses, and means responsive to the number stored in the counter reaching a first predetermined value then latches both the first and second gates open for a predetermined relatively short period in each counter cycle during which the counter passes through its zero state.

摘要翻译： 描述了数字锁相环，其包括第一栅极，通过该第一栅极将输入脉冲传递到后续数据处理电路;第二栅极，具有等于所需输入脉冲的重复频率的预定脉冲重复频率的参考脉冲通过该第二栅极馈送到 计数器的复位输入使得每个参考脉冲将计数器复位为零，以及用于将时钟脉冲馈送到计数器的时钟发生器。 因此，计数器反复地步进预定的周期，计数周期的标称周期等于参考脉冲的标称周期，以及响应于存储在计数器中的数量达到第一预定值的装置，然后锁存第一和 在计数器通过其零状态的每个计数器循环期间，第二门打开预定的相对较短的周期。

公开(公告)号：US3920957A

公开(公告)日：1975-11-18

申请号：US35926973

申请日：1973-05-11

申请人： SB ELECTRONIC SYSTEMS LTD

发明人： SIMS GEORGE EDWARD

IPC分类号： G06K1/12 ,  G06K19/06 ,  G06K7/10 ,  G06K1/22 ,  H04L15/24

CPC分类号： G06K19/06028 ,  G06K1/12

摘要： The combination of a record of binary digital data, comprising a recording substrate presenting a plurality of adjacent pairs of adjacent parallel bar-like zones each of which may be of either of two different widths, with a reading head, the zones of each pair being adapted to present two different characteristics identifiable by the reading head so that these characteristics are presented in alternation to a reading head upon relative movement between the reading head and the record in a direction perpendicular to the bar-like zones, the position of every transition between adjacent zones being of independent significance in determining the data recorded.

摘要翻译： 二进制数字数据的记录的组合包括记录基板，其具有多个相邻的平行条状区域对，其中每个相邻的平行条形区域可以是两个不同宽度的一个，具有读取头，每对的区域是 适于呈现由读取头识别的两种不同特征，使得这些特征在垂直于条形区域的方向上相对于读取头和记录之间的相对移动而呈现与读取头交替， 相邻区域在确定所记录的数据时具有独立的意义。

公开(公告)号：US3700807A

公开(公告)日：1972-10-24

申请号：US3700807D

申请日：1970-02-13

申请人： SCOPE INC

发明人： DRAPEAU RAOUL E

IPC分类号： H04L21/04 ,  H04L15/24 ,  H04L15/34 ,  H04L17/16

CPC分类号： H04L21/04 ,  Y10S400/903

摘要： An impactless printer and control having movable heads with stylii extending therefrom for marking a coated paper. A stepping motor is used to transmit motion to the head so that the printer is asynchronous. Gating means control the output of a memory device connected to input data lines. The gating means are responsive to and actuated by a strobe pulse which controls the timing operation of the device.

摘要翻译： 一种无冲击打印机和控制器，其具有从其延伸的带有标记涂布纸的移动头。 使用步进电机将动作传送到头部，以使打印机处于异步状态。 门控装置控制连接到输入数据线的存储器件的输出。 选通装置响应于由控制装置的定时操作的选通脉冲启动。

公开(公告)号：US3660601A

公开(公告)日：1972-05-02

申请号：US3660601D

申请日：1970-06-10

申请人： IBM

发明人： DOBSON DONALD R

IPC分类号： H04L27/14 ,  H04L15/24

CPC分类号： H04L27/14

摘要： A system for detecting frequency shift keying information on a real time basis independent of the amplitude of the input FSK signal. The second derivative of the input voltage waveform signal which is in exact phase with the input signal is obtained. The gain of the differentiated voltage signal is controlled so that when the input signal has a frequency below predetermined frequency, the magnitude o2 the differentiated voltage signal will be less than the magnitude of the input voltage signal at all points except zero; and when the input signal exceeds the predetermined frequency, the magnitude of the differentiated voltage signal exceeds that of the input voltage signal. The input signal and the gain controlled differentiated signal are magnitude compared and an output signal representative of the result of the comparison and hence of the frequency of the input signal is supplied. A low pass filter introducing minimal signal delay is utilized to remove possible logic silvers at the time when both signals are zero and when there is an input frequency change.

摘要翻译： 独立于输入FSK信号的幅度的实时检测频移键控信息的系统。 获得与输入信号精确相位的输入电压波形信号的二次导数。 控制差分电压信号的增益，使得当输入信号的频率低于预定频率时，微分电压信号的幅度o2将小于零点以外的所有点的输入电压信号的幅度; 并且当输入信号超过预定频率时，微分电压信号的大小超过输入电压信号的幅度。 输入信号和增益受控的微分信号是比较的幅度，并且提供表示比较结果和因此输入信号的频率的输出信号。 引入最小信号延迟的低通滤波器用于在两个信号为零时以及当输入频率变化时消除可能的逻辑银。