公开(公告)号：US3839602A

公开(公告)日：1974-10-01

申请号：US25611472

申请日：1972-05-23

Applicant: VICTOR COMPANY OF JAPAN

Inventor： TAKAHASHI N

IPC: H04S3/00 ,  G11B3/00 ,  G11B3/74

CPC classification number: H04S3/006

Abstract: A system records a four channel record by forming sum and difference signals for each two of four channel signals. The difference signals are compressed, but only with respect to a specific frequency or frequencies in the vicinity thereof. The signals thus compressed are modulated in a difference anglemodulation mode, with a specific frequency as selected a modulation transition point. After multiplexing the sum signals and the angle-modulated difference signals are recorded. A system for reproducing four channel records of the above-described type demodulates the reproduced angle modulated difference signals. The demodulated difference signals are expanded with respect to only the specific frequency or frequencies in the vicinity thereof. Thereafter, the four individual channel signals derived from the expanded reproduced sum signals and difference signals are extracted.

Abstract translation: 系统通过为四个信道信号中的每两个形成和信号和差分信号来记录四通道记录。 差分信号被压缩，但是仅针对其附近的特定频率或频率。 如此压缩的信号以差分角度调制模式被调制，其中特定频率被选择为调制转变点。 在复用之后，记录和信号和角度调制差分信号。 用于再现上述类型的四个通道记录的系统解调再现的角度调制差分信号。 解调的差分信号仅相对于其附近的特定频率或频率而扩展。 此后，提取从扩展再现和信号和差信号导出的四个单独信道信号。

公开(公告)号：US3818355A

公开(公告)日：1974-06-18

申请号：US28680872

申请日：1972-09-06

Applicant: VICTOR COMPANY OF JAPAN

Inventor： ISHIGAKI Y

IPC: G01R23/02 ,  G01R23/09 ,  H03D3/00 ,  H03D3/04 ,  H03K5/00 ,  H04L27/22

CPC classification number: H03D3/04

Abstract: A demodulating system produces two square waves of mutually opposite phase responsive to an angular modulated wave in which a carrier wave of low frequency is modulated. The phase of one square wave is delayed by 90*, thereby to produce two square waves of mutually opposite phase. The four square waves of phases respectively differing by 90* are differentiated for producing a differentiated pulse train of a frequency which is quadruple the frequency of the angular modulated wave. Pulse counting means demodulates this differentiated pulse train.

Abstract translation: 一个解调系统产生两个相反相位的方波，响应于调制低频载波的角度调制波。 一个方波的相位延迟90°，从而产生相互相反的两个方波。 分别相差90°的相位的四个方波被区分用于产生频率的微分脉冲串，其是角调制波的频率的四倍。 脉冲计数装置解调这个不同的脉冲串。

公开(公告)号：US3766329A

公开(公告)日：1973-10-16

申请号：US3766329D

申请日：1972-05-24

Applicant: VICTOR COMPANY OF JAPAN

Inventor： KATOH S

IPC: G11B20/02 ,  G11B5/00 ,  G11B5/03 ,  G11B15/10 ,  G11B15/16 ,  G11B15/22 ,  G11B15/12

CPC classification number: G11B15/22 ,  G11B5/00 ,  G11B15/16

Abstract: A device for cutting off a recording signal at the end of a recording operation in a cartridge type tape recorder, which device operates at the time of stopping of a recording operation to cause a variation in the frequency characteristic of a trap circuit for trapping a high-frequency bias and inserted in a recording signal transmission path, thereby to cut off the recording signal.

Abstract translation: 一种用于在盒式磁带录像机中记录操作结束时切断记录信号的装置，该装置在停止记录操作时操作以引起用于捕获高电平的陷阱电路的频率特性的变化 并且插入到记录信号传输路径中，从而切断记录信号。

公开(公告)号：US3752485A

公开(公告)日：1973-08-14

申请号：US3752485D

申请日：1970-04-23

Applicant: VICTOR COMPANY OF JAPAN

Inventor： OKABE K

IPC: G11B15/68 ,  G11B23/12

CPC classification number: G11B15/6815 ,  G11B15/686

Abstract: An apparatus for playing a plurality of cassettes automatically and continuously in sequence. The apparatus plays a cassette taken out from a sequentially fed cassette case; and both forward and reverse channel tracks of a two track tape of each cassette are put to reproducing performance to play.

Abstract translation: 一种依次自动连续播放多个盒的装置。 该装置播放从顺序馈送的盒式磁带盒中取出的盒式磁带; 并且每个盒的两条磁带的正向和反向通道轨道都被放置到再现性能上。

公开(公告)号：US3751599A

公开(公告)日：1973-08-07

申请号：US3751599D

申请日：1971-11-22

Applicant: VICTOR COMPANY OF JAPAN

Inventor： OGAWA H ,  SUZUKI T ,  SUZUKI T ,  TANAKA M

IPC: G11B5/02 ,  G11B5/265 ,  G11B5/28

CPC classification number: G11B5/02 ,  G11B5/265

Abstract: A multi-head core magnetic head comprises at least one head core having a gap of a relatively large gap width and at least two other head cores having gaps of gap width respectively smaller than that of said one head core. The at least two other head cores are disposed at positions at which they can trace a track made by the at least one head core on the magnetic tape and distances between the gap of the at least one head core and the respective gaps of the at least two other head cores are different from each other. These head cores are integrally assembled in a single shield case.

Abstract translation: 多头磁芯磁头包括至少一个具有相对较大间隙宽度的间隙的磁头磁芯和至少两个间隙宽度分别小于所述一磁头磁芯间隙的其它磁芯磁芯。 至少另外两个磁头磁芯设置在它们可以跟踪由磁带上的至少一个磁头磁芯制成的轨道的位置处，并且至少一个磁头磁芯的间隙与至少一个磁头芯的相应间隙之间的距离 另外两个磁头磁芯是不同的。 这些头部芯体整体地组装在单个屏蔽壳体中。

公开(公告)号：US3750619A

公开(公告)日：1973-08-07

申请号：US3750619D

申请日：1971-12-27

Applicant: VICTOR COMPANY OF JAPAN

Inventor： YAMAMURA T

IPC: H03J1/04 ,  H03J1/02

CPC classification number: H03J1/045 ,  Y10T74/2084

Abstract: A channel indicator generally comprises a plurality of channel indicating members respectively indicating a channel number, an indicator body which is capable of mounting and accommodating the channel indicating members individually replaceably, and a knob portion which is rotatable integrally with the indicator body. The channel indicator indicates the channel numbers in cooperation with a tuner. The channel indicating members can be individually removed from the indicator body and replaced.

Abstract translation: 通道指示器通常包括分别指示通道号的多个通道指示构件，能够独立地可更换地安装和容纳通道指示构件的指示器本体和与指示器主体一体旋转的把手部分。 通道指示符与调谐器配合显示通道号。 通道指示构件可以从指示器主体单独拆卸并更换。

公开(公告)号：US3715468A

公开(公告)日：1973-02-06

申请号：US3715468D

申请日：1970-11-10

Applicant: VICTOR COMPANY OF JAPAN

Inventor： FUJITA M

IPC: H04N5/92 ,  H04N9/79 ,  H04N9/898 ,  H04N5/76

CPC classification number: H04N9/7912 ,  H04N5/92 ,  H04N9/898

Abstract: In a color video signal recording and reproducing system, a color video signal is separated into a luminance signal and a chrominance signal. A frequency modulated luminance signal is superimposed on a frequency converted chrominance signal. This superimposed signal is recorded on a magnetic medium and reproduced therefrom. The chrominance signal is converted into a signal having a frequency which makes beats inconspicuous. A signal, which is in opposite phase to the beats, is produced in order to eliminate the beats which are produced in the recording and reproducing processes. The opposite phase signal are added to the luminance signal on either the recording side or the reproducing side of the system.

Abstract translation: 在彩色视频信号记录和再现系统中，彩色视频信号被分成亮度信号和色度信号。 频率调制亮度信号叠加在变频色度信号上。 该叠加信号被记录在磁性介质上并由其再现。 色度信号被转换成具有使拍打不显眼的频率的信号。 产生与节拍相反相位的信号，以消除在记录和再现过程中产生的节拍。 相反的相位信号被加到系统的记录侧或再现侧的亮度信号。

公开(公告)号：US3697015A

公开(公告)日：1972-10-10

申请号：US3697015D

申请日：1971-01-26

Applicant: VICTOR COMPANY OF JAPAN

Inventor： IWATA MITSUO

IPC: G11B15/02 ,  G11B15/10 ,  G11B15/18 ,  B65H59/38 ,  G03B1/04 ,  G11B15/32

CPC classification number: G11B15/10 ,  G11B15/02 ,  G11B15/18

Abstract: An automatic operating apparatus for magnetic recording and reproducing apparatus in which there is provided a cam integrally revolving by revolution of an operating knob, means for engaging a pinch roller cooperating with a capstan and an idler cooperating with a reel disk in a waiting position in association with the revolution of the cam, and means for releasing the pinch roller and idler from the waiting position by closing of a timer switch at a pre-set time thus starting an automatic recording or reproducing operation. There is further provided means for detecting the presence or absence of a magnetic tape and means for returning the cam to the stop position thereby stopping the recording or reproducing operation.

Abstract translation: 一种用于磁记录和再现装置的自动操作装置，其中设置有通过旋转操作旋钮一体地旋转的凸轮，用于将与主导轴配合的压紧辊接合的装置和与卷盘盘配合的空转轮， 随着凸轮的旋转，以及用于通过在预设时间关闭定时器开关将夹送辊和惰轮释放在等待位置的装置，从而开始自动记录或再现操作。 还提供了用于检测磁带的存在或不存在的装置以及用于将凸轮返回到停止位置的装置，从而停止记录或再现操作。

公开(公告)号：US3692576A

公开(公告)日：1972-09-19

申请号：US3692576D

申请日：1970-01-09

Applicant: VICTOR COMPANY OF JAPAN

Inventor： TAKAYANAGI KENJIRO ,  MATSUYAMA KIHACHIRO ,  FUJIWARA TADASHI ,  MIZUNO HIDEAKI ,  AKIYAMA NAOKI

IPC: H01J29/28 ,  H01J29/32

CPC classification number: H01J29/28 ,  H01J29/32 ,  Y10S428/925 ,  Y10T428/12458 ,  Y10T428/263

Abstract: A FILM FOR THE PREVENTION OF SCATTERING OF ELECTRONS COMPRISING AN ELECTRODE LAYER, A CROSSED LAYER FORMED THEREON CONSISTING OF AN ELECTRODE CONSTITUENT MATERIAL AND A MATERIAL FOR THE PREVENTION OF SCATTERING OF ELECTRONS SMALLER IN ATOMIC NUMBER THAN THAT OF THE ELECTRODE CONSTITUENT MATERIAL, AND A SCATTERING PROVENTION OF SCATTERING ON WHICH IS FORMED A LAYER FOR THE PREVENTION OF SCATTERING OF ELECTRONS OF THE SECOND MATERIAL ON SAID CROSSED LAYER. A METHOD OF MANUFACTURING THE ABOVE ELECTRON SCATTERING PREVENTION FILM IS ALSO DISCLOSED.

公开(公告)号：US3681225A

公开(公告)日：1972-08-01

申请号：US3681225D

申请日：1970-11-23

Applicant: VICTOR COMPANY OF JAPAN

Inventor： GENMA SUSUMU ,  KURODA AKIO ,  KATO TOSHIO ,  KISHI FUSAO

IPC: G11B5/82 ,  G11B5/73 ,  G11B5/738 ,  G11B5/84 ,  H01F10/06

CPC classification number: H01F10/06 ,  G11B5/8404 ,  Y10S205/917 ,  Y10S205/922 ,  Y10S428/928 ,  Y10S428/935 ,  Y10T428/12944 ,  Y10T428/12993

Abstract: A METHOD OF MAKING MAGNETIC DISC WHEREIN AN ELECTRICALLY CONDUCTING MATERIAL LAYER IS FORMED ON THE SUFACES OF A BASE PLATE MADE BY SHAPING A SYNTHETIC RESINOUS MATERIAL, THEN A MAGNETIC MATERIAL IS APPLIED TO THE COAT BY ELECTRODEPOSITION AND FINALLY THE SURFACES ARE POLISHED BY A POLISHING MATERIAL OF VERY SMALL GRAIN SIZE. THE LAYER OF MAGNETIC MATERIAL FORMED BY ELECTRODEPOSITION HAS ITS SURFACES RENDERED SMOOTH BY THE POLISHING OPERATION BECAUSE MINUTE FISSURES IN THE SURFACES ARE REMOVED AND AT THE SAME TIME THE MAGNETIC MATERIAL LAYER ITSELF IS ANNEALED BY THE HEAT OF FRICTION.