公开(公告)号：US4306250A

公开(公告)日：1981-12-15

申请号：US179125

申请日：1980-08-18

申请人： Christopher P. Summers ,  Richard E. F. Bugg ,  John R. Kinghorn

发明人： Christopher P. Summers ,  Richard E. F. Bugg ,  John R. Kinghorn

IPC分类号： H04N7/035 ,  H04N5/04 ,  H04N7/08

CPC分类号： H04N7/0352

摘要： In a television receiver adapted for the display of a normal television picture and/or message information in which both separated synchronizing signals and locally derived synchronizing signals are available, the selective use of one or the other of these two forms of synchronizing signals, having regard to different display circumstances, for the picture and message information display.

摘要翻译： 在适于显示正常电视图像和/或其中分离的同步信号和本地导出的同步信号可用的消息信息的电视接收机中，考虑到这两种形式的同步信号中的一种或另一种的选择性使用 到不同的显示情况，为图片和消息信息显示。

公开(公告)号：US4431969A

公开(公告)日：1984-02-14

申请号：US324885

申请日：1981-11-25

申请人： Christopher P. Summers ,  John R. Kinghorn

发明人： Christopher P. Summers ,  John R. Kinghorn

IPC分类号： H03H7/18 ,  H03H11/20 ,  H03H17/08 ,  H03L7/00

CPC分类号： H03H11/20 ,  H03H17/08

摘要： As shown in FIG. 8, a phase shifter for phase shifting a single frequency clock signal CK as produced by an oscillator (813) comprises an inverter (805) and a delay network (804) for producing phase quadrature versions I.sub.ac, I.sub.ac and Q.sub.ac, Q.sub.ac of the signal. A current generator (803) produces control currents I.sub.c, I.sub.c and Q.sub.c, Q.sub.c, the magnitudes of which are determined by a control voltage V.sub.c whose magnitude represents a required phase shift. Two multipliers (801) and (802) multiply the signal pairs I.sub.ac, I.sub.ac and I.sub.c, I.sub.c ; and the signal pairs Q.sub.ac, Q.sub.ac and Q.sub.c, Q.sub.c, to produce resultant quadrature signals which are combined in an adder (806) to produce the phase shifted clock signal CLK (and CLK). The phase shift range is made to cover a number of cycles by an arrangement comprising two limit detectors (807) and (808), an OR-gate ( 809), a .div.2 circuit (810), and two reversing switches (811) and (812). This arrangement serves to reverse the sense of the control voltage V.sub.c at each limit of its operating range so that this range can be used successively a number of times to represent progressive phase shift. The current generator (803) can also be modified to provide control currents representing a phase shift of more than one cycle.

摘要翻译： 如图所示。 如图8所示，用于由振荡器（813）产生的用于移相单频时钟信号CK的移相器包括用于产生信号的相位正交版本Iac，Iac和Qac，Qac的反相器（805）和延迟网络（804） 。 电流发生器（803）产生控制电流Ic，Ic和Qc，Qc，其大小由其幅度表示所需相移的控制电压Vc确定。 两个乘法器（801）和（802）乘以信号对Iac，Iac和Ic，Ic; 和信号对Qac，Qac和Qc，Qc，以产生在加法器（806）中组合以产生相移时钟信号CLK（和CLK）的合成正交信号。 相移范围通过包括两个限制检测器（807）和（808），或门（809），二维电路（810）和两个反转开关（811）的布置来覆盖多个周期， 和（812）。 这种布置用于在其操作范围的每个极限处反转控制电压Vc的感觉，使得可以连续多次使用该范围来表示逐行相移。 电流发生器（803）也可以被修改以提供表示多于一个周期的相移的控制电流。

公开(公告)号：US4698677A

公开(公告)日：1987-10-06

申请号：US663794

申请日：1984-10-23

申请人： John R. Kinghorn ,  Richard E. F. Bugg

发明人： John R. Kinghorn ,  Richard E. F. Bugg

IPC分类号： H04N7/08 ,  H04N7/025 ,  H04N7/03 ,  H04N7/035 ,  H04N7/081 ,  H04N7/083 ,  H04N7/087 ,  H04N7/088 ,  H04N7/093

CPC分类号： H04N7/0255

摘要： A teletext television receiver has a character memory comprising a common language set of characters and a plurality of sets of national option characters, each of which latter sets makes up a complete national language set when combined with the common language set. The totality of characters are arranged for addressing in two different modes. In one addressing mode, only one of the national option sets can be selected for page display as determined by control bits contained in the page header, so that the page can be only in one language. In the other addressing mode, all the national option sets can be selected for page display as determined by ghost row information of an acquired page, or locally by the receiver. This allows a display page to be in more than one language. FIGS. 3 and 4 show the code tables for the two addressing modes.

摘要翻译： 图文电视接收机具有字符存储器，该字符存储器包括公共语言字符集和多组国家选项字符，当与公共语言集合组合时，其中的每一组组成一个完整的国家语言集合。 字符的总数被安排用于以两种不同的模式寻址。 在一个寻址模式中，只有一个国家选项集可以被选择用于通过包含在页头中的控制位所确定的页面显示，使得页面可以只有一种语言。 在其他寻址模式下，可以选择所有的国家选项集来进行页面显示，如通过获取的页面的重影行信息所确定的，或者由接收者本地确定的。 这允许显示页面使用多种语言。 图 3和4显示了两种寻址模式的代码表。

公开(公告)号：US6020882A

公开(公告)日：2000-02-01

申请号：US21260

申请日：1998-02-10

申请人： John R. Kinghorn ,  David R. Tarrant

发明人： John R. Kinghorn ,  David R. Tarrant

IPC分类号： H04H1/00 ,  H04H60/16 ,  H04N5/445 ,  H04N5/782 ,  H04N7/088 ,  H04N7/16 ,  H04N7/10

CPC分类号： H04H60/16 ,  H04N21/42201 ,  H04N21/4532 ,  H04N21/454 ,  H04N5/782 ,  H04N7/0887 ,  H04N7/163 ,  H04N5/445

摘要： An arrangement for the control of viewing of a television program in which a classification code is transmitted with the video signal, for example, in an extension packet of a teletext signal, includes a decoder (23) which detects the received codes and passes them to a microcontroller (27). An authorized user is able to enter codes of permitted program classifications by means of a remote control unit (28). Codes representing these permitted classifications are stored in a non-volatile memory (29). The received and permitted codes are compared in the microcontroller (27) which inhibits the video (25) and/or audio (32) circuits if the received codes are not permitted codes. The non-volatile memory (29) is arranged to store a plurality of different program classifications, each of which is valid for different periods of the day.

摘要翻译： 用于控制利用视频信号发送分类码的电视节目的观看控制的装置，例如在图文电视信号的扩展分组中，包括：解码器（23），其检测接收到的代码并将其传递给 微控制器（27）。 授权用户能够通过遥控单元（28）输入允许节目分类的代码。 代表这些允许分类的代码被存储在非易失性存储器（29）中。 如果接收到的代码是不允许的代码，则在微控制器（27）中比较接收和允许的代码，其禁止视频（25）和/或音频（32）电路。 非易失性存储器（29）被布置成存储多个不同的程序分类，每个程序分类对于一天的不同时段是有效的。

公开(公告)号：US4719510A

公开(公告)日：1988-01-12

申请号：US916920

申请日：1986-10-09

申请人： John R. Kinghorn

发明人： John R. Kinghorn

IPC分类号： H04N7/08 ,  H04N7/025 ,  H04N7/03 ,  H04N7/035 ,  H04N7/081 ,  H04N7/088 ,  H04N7/04

CPC分类号： H04N7/0882 ,  H04N7/025

摘要： A teletext decoder for full-channel operation includes a "row-found" register in which a flag is put for each data row which is actually present in a selected teletext page that is received and stored in the page memory of the decoder. The decoder further includes control means which on read-out from the page memory allows the utilisation of only those data rows of the stored page for which there is a flag in the "row-found" register. Because teletext pages can contain different numbers of data rows, it is normally necessary to empty the page memory before a selected new page is received and stored since otherwise data rows of a stored old page which are not over-written by corresponding data rows of the new page would be included in the data read out for the new page. The provision of a flag for each received data row of the new page and the action of the control means prevents this happening. It then becomes unnecessary to delay reception of a new page until an old page has been removed from the page memory. Means are also provided for taking account of parity errors in received character data codes.

摘要翻译： 用于全频道操作的图文解码器包括“行发现”寄存器，其中为接收并存储在解码器的页面存储器中的所选择的图文电视页面中实际存在的每个数据行放置标志。 解码器还包括控制装置，其从页存储器读出允许仅使用在“行发现”寄存器中存在标志的存储页的那些数据行。 由于图文电视页面可以包含不同数量的数据行，所以通常需要在接收和存储所选新页面之前清空页面存储器，否则存储的旧页面的数据行不会被相应的数据行覆盖 新页面将被包含在新页面读出的数据中。 为新页面的每个接收的数据行提供标志以及控制装置的动作防止这种情况发生。 因此，不需要延迟新页面的接收，直到从页面存储器移除旧页面。 还提供了用于考虑接收到的字符数据代码中的奇偶校验错误的装置。

公开(公告)号：US5184220A

公开(公告)日：1993-02-02

申请号：US647620

申请日：1991-01-28

申请人： John R. Kinghorn ,  Jeremy R. Stevens

发明人： John R. Kinghorn ,  Jeremy R. Stevens

IPC分类号： H04N7/025 ,  H04N7/03 ,  H04N7/035 ,  H04N7/088

CPC分类号： H04N7/0882

摘要： A "correct page header received" (CPHR) flip-flop (3) is set by the page header of a required teletext page and reset by the next following page header, a "page end" flip-flop (15) generates a page end output (17) in response to the receipt of the next following page header, a "row received" flip-flop (11) detects at least one row of the required teletext page, a gate (14) inhibits the generation of an end of page output (21) for a predetermined period, typically corresponding to three field intervals, and an AND gate (18) further inhibits the generation of an end of page output (21) if there has been a subsequent detection of a further page header of the required teletext page within the predetermined period.

公开(公告)号：US4908707A

公开(公告)日：1990-03-13

申请号：US221156

申请日：1988-07-19

申请人： John R. Kinghorn

发明人： John R. Kinghorn

IPC分类号： H04N7/025 ,  G04G15/00 ,  H04N5/765 ,  H04N7/03 ,  H04N7/035 ,  H04N7/088

CPC分类号： H04N7/0887 ,  G04G15/006

摘要： A system for video recorder programming using existing television broadcast teletext transmissions. The programs required are chosen from schedules displayed on teletext pages, the necessary control information is loaded automatically into a video recorder, and program labels are transmitted to ensure that the correct programs will be recorded even if program timings are altered. All the control information for achieving the above are fitted into the coding structure of a teletext transmission using extension packets additional to data packets containg display data. The invention also extends to a video recorder with its own teletext decoder for processing the control information.

公开(公告)号：US4574386A

公开(公告)日：1986-03-04

申请号：US491510

申请日：1983-05-04

申请人： John R. Kinghorn

发明人： John R. Kinghorn

IPC分类号： H03K19/177 ,  H03K3/356 ,  H03K19/096 ,  H03K23/44

CPC分类号： H03K23/58 ,  H03K3/35606

摘要： A dynamic two-phase circuit arrangement includes two dynamic switching circuits, each of which has an input stage, a non-inverting output stage and an inverting output stage. Two-phase control of the two dynamic switching circuits is effected by two drive pulses. The arrangement also includes combinatorial logic which is operated by the drive pulses to feed counter clock pulses to the first dynamic switching circuit. The first dynamic switching circuit performs a divide-by-two operation in response to the clock pulses and drives the second dynamic switching circuit from its Q-output. The second dynamic switching circuit includes an additional switching transistor which is also driven from the Q-output of the first dynamic switching circuit. This transistor is connected to perform an OR-function with the non-inverting output stage of the second dynamic switching circuit. As a result, this output stage produces shift pulses having half the repetition frequency of the clock pulses. The duration of these shift pulses corresponds to the period of the two-phase control cycle of the arrangement.

摘要翻译： 动态两相电路装置包括两个动态开关电路，每个动态开关电路具有输入级，非反相输出级和反相输出级。 两个动态切换电路的两相控制由两个驱动脉冲实现。 该布置还包括由驱动脉冲操作以将计数器时钟脉冲馈送到第一动态切换电路的组合逻辑。 第一动态切换电路响应于时钟脉冲执行二分频操作，并且从其Q输出驱动第二动态切换电路。 第二动态切换电路包括也从第一动态切换电路的Q输出驱动的附加开关晶体管。 该晶体管被连接以与第二动态切换电路的非反相输出级执行OR功能。 结果，该输出级产生具有时钟脉冲重复频率的一半的移位脉冲。 这些移位脉冲的持续时间对应于该装置的两相控制周期的周期。

公开(公告)号：US06192187B1

公开(公告)日：2001-02-20

申请号：US09137799

申请日：1998-08-20

申请人： John R. Kinghorn

发明人： John R. Kinghorn

IPC分类号： H04N591

CPC分类号： H04N5/9206 ,  G11B15/087 ,  G11B23/0305 ,  G11B27/107 ,  G11B27/11 ,  G11B27/3054 ,  G11B27/328 ,  G11B27/34 ,  G11B2220/41 ,  G11B2220/65 ,  G11B2220/90

摘要： A tape indexing arrangement for video recorders records the index on the tape using standard broadcast teletext codes. When a tape is inserted, the contents list it contains is written onto an index RAM in the recorder (200). When a new program is recorded, a program identification is generated from PDC or EPG data (202). At a suitable later time, the contents of the index RAM are recorded on the tape (204).

摘要翻译： 视频录像机的磁带索引装置使用标准广播图文代码在磁带上记录索引。 当插入磁带时，其包含的内容列表被写入记录器（200）中的索引RAM上。 当记录新节目时，从PDC或EPG数据（202）生成节目识别。 在适当的较后时间，索引RAM的内容被记录在磁带（204）上。

公开(公告)号：US5386238A

公开(公告)日：1995-01-31

申请号：US2434

申请日：1993-01-08

申请人： John R. Kinghorn ,  Jeremy R. Stevens ,  David R. Tarrant

发明人： John R. Kinghorn ,  Jeremy R. Stevens ,  David R. Tarrant

IPC分类号： G09G5/22 ,  H04N5/445 ,  H04N7/025 ,  H04N7/03 ,  H04N7/035 ,  H04N7/088 ,  H04N7/08 ,  H04N7/087

CPC分类号： H04N21/4888 ,  G09G5/222 ,  H04N5/44513 ,  H04N7/0884 ,  H04N21/42204 ,  H04N21/4316 ,  H04N21/47 ,  H04N5/44504

摘要： A television receiver includes a teletext decoder having a page memory (PM) into which teletext data is read from a data acquisition circuit (DAC) via an interface circuit (MIC) under control of a microprocessor (PRO). The microprocessor is also used to control functions of the television receiver and to cause on-screen display messages to be produced. When an on-screen display message is to be produced, the microprocessor sets a bit in the memory PM which causes a latch to be set which in turn causes a multiplexer (MUX) to apply data from an auxiliary memory (APM) to a character generator (CG). When the on-screen display message is to be deleted, the bit in the page memory is reset causing the latch to be reset and the multiplexer to apply data from the page memory to the character generator. This enables on-screen display messages to be applied to the character generator without losing any of the teletext data stored in the page memory.

摘要翻译： 电视接收机包括具有页面存储器（PM）的图文解码器，在微处理器（PRO）的控制下，经由接口电路（MIC）从数据采集电路（DAC）读取图文电视数据。 微处理器还用于控制电视接收机的功能并且产生屏幕显示消息。 当要生成屏幕显示消息时，微处理器在存储器PM中设置一个位，这导致锁存器被设置，这又使得多路复用器（MUX）将数据从辅助存储器（APM）应用到字符 发电机（CG）。 当屏幕显示消息被删除时，页面存储器中的位被复位，使得锁存器被复位，并且复用器将数据从页存储器应用到字符发生器。 这使得能够将屏幕显示消息应用于字符发生器而不会丢失存储在页面存储器中的任何图文电视数据。