-
1.发明公开Shadow mask colour CRT with enhanced resolution and/or brightness. 失效Schattenmasken-Farbbildkathodenstrahlröhremit verbesserterAuflösungund / oder Helligkeit。
公开(公告)号：EP0205699A1
公开(公告)日：1986-12-30
申请号：EP85304638
申请日：1985-06-28
Applicant: IBM
Inventor： CHASE BRIAN DAVID , PATON ANDREW
CPC classification number: H01J29/07
Abstract: A colour CRT has stripes (10) of different colour light emission phosphors (r, g and b) deposited on a face plate (8) of the tube with the relative widths of the stripes being inversely proportional to the light emission efficiency of the phosphors. By this means the integrated brigthness of the emitted light from the different phosphor stripes is the same for the same value beam current. By using a novel double shadow mask arrangement, the widths of the beams from the three guns can be made to match, or substantially to match, the widths of the phosphor elements on which they land. Specifically the beam from one gun (not shown) is aligned with apertures through both masks in order to transmit a relatively wide portion of the beam onto the least efficient, in this case the red (r), phosphor. The portion of the beams transmitted by the first mask 7.1 for the other two guns (not shown) are further clipped by the relatively off-set apertures in the second mask 7.2. This arrangement enables the advantage of the balanced colour output from the screen to be enjoyed without loss of purity margin and provides a significant increase in brightness for a given beam current and/or resolution of the screen. The invention is applicable to CRTs employing shadow masks with slots and phosphor stripes, or holes and phosphor dots and also for CRTs driven in raster scan or vector mode.
Abstract translation: 彩色CRT具有沉积在管的面板（8）上的不同颜色的发光荧光体（r，g和b）的条纹（10），其中条纹的相对宽度与荧光体的发光效率成反比 。 通过这种方式，来自不同荧光体条纹的发射光的集成度对于相同值的光束电流是相同的。 通过使用新颖的双重荫罩布置，可以使来自三个枪的光束的宽度与它们着陆的荧光体元件的宽度匹配或基本匹配。 具体地，来自一个枪（未示出）的光束通过两个掩模与孔径对准，以便将光束的相对宽的部分传输到最低效率（在这种情况下为红色（r））磷光体。 由第一掩模7.1传输的另外两个枪（未示出）的光束的部分被第二掩模7.2中相对偏移的孔进一步夹紧。 这种布置使得能够享受来自屏幕的平衡颜色输出的优点而不损失纯度裕度，并且对于给定的束电流和/或屏幕的分辨率提供明显的亮度增加。 本发明适用于采用具有槽和磷光体条纹或者孔和磷光体点的阴影掩模以及用光栅扫描或矢量模式驱动的CRT的CRT。
-
2.发明专利
公开(公告)号：DE3066757D1
公开(公告)日：1984-04-05
申请号：DE3066757
申请日：1980-10-07
Applicant: IBM
Inventor： BURR PETER , CHASE BRIAN DAVID , PATON ANDREW , SOWTER BRIAN RAYMOND
-
公开(公告)号：GB1199382A
公开(公告)日：1970-07-22
申请号：GB2195168
申请日：1968-05-09
Applicant: IBM
Inventor： PATON ANDREW
Abstract: 1,199,382. Magnetic storage apparatus. INTERNATIONAL BUSINESS MACHINES CORP. 9 May, 1968, No. 21951/68. Heading H3B. In an anisotropic thin film memory matrix read out of information is effected using oscillatory drive signals and stored information is detected from the phase of the read out signals. The n+1xN array 10 of anisotropic magnetic film elements includes n bit lines 12 and a phase line 13 of identical construction to the bit lines. In operation the magnetic elements associated with the bit lines are magnetized in one or the other direction along the easy axis, parallel to the word lines 11 whereas those elements crossed by the phase line 13 are all magnetized in the same direction parallel to the easy axis. During a read operation an oscillatory signal of frequency f in the range 10 to 100 MHz is applied to a selected word line 13 so that each magnetic element in the selected word line is subjected to an oscillatory magnetic field in the hard axis direction of amplitude insufficient to irreversibly change the state of magnetization of the element. The magnetization vector of the element oscillates about the easy axis direction inducing oscillatory signals of frequency 2f in each of the bit lines and the phase line. The phase of the signal developed on each line is characteristic of the information stored in the element coupled thereto and are 180 degrees out of phase with each other for binary zero and one. Differential amplifiers 17 each have one input connected to a respective one of the n bit lines and the other input connected to the phase line 13. Assuming that the elements coupled to the phase line 13 are magnetized in their binary zero direction then the output of each differential amplifier is negligible for a binary zero stored in the storage elements and large for a stored binary one. The output is fed via an integrator 18 to threshold switch 20. In the arrangement of Fig. 2 (not shown), thirtysix phase lines are shared between 288 bit lines and the outputs of the bit lines are gated by decoding trees into a group of thirty-six decoding circuits. The decoding circuits each connect a corresponding one of the associated bit lines to one input of the respective decoding circuit where the output is combined with the output from that one of the phase lines associated with the respective group of bit lines.
-
Patent Agency Ranking
公开(公告)号：CA1151312A
公开(公告)日：1983-08-02
申请号：CA352845
申请日：1980-05-27
Applicant: IBM
Inventor： JUDD IAN D , PATON ANDREW
Abstract: COLOUR CATHODE-RAY TUBE APPARATUS Information about the position of an electron beam in a shadow mask colour cathode-ray tube is obtained by detecting a signal representative of the electron beam current intercepted by the shadow mask. The signal may be derived by detecting the current generated by the electron beam in the shadow mask, or in the conductive layer at the tube screen, or by detecting the difference between the electron beam currents in the mask and at the screen. In the latter case, the shadow mask and the conductive layer are connected respectively to the ends of the primary winding of a transformer. The difference currents are detected by a secondary winding. A centre tap of the primary winding is connected to the tube EHT. EHT isolation may also be achieved by optical or capacitive decoupling. The shadow mask may have shaped apertures to generate distinctive difference currents. In a preferred embodiment the apertures are slits or rows of slots extending from one side to the other of the shadow mask and a line raster is such that each line coincides with a different slit. EHT isolation may also be achieved by optical or capacitive decoupling.
-
公开(公告)号：CA960356A
公开(公告)日：1974-12-31
申请号：CA147826
申请日：1972-07-25
Applicant: IBM
Inventor： HEARN BRIAN R , KINGTON BRIAN W , PATON ANDREW , JONES ARTHUR S , VIGAR JAMES M L , PASCUAL RAFAEL
-
公开(公告)号：DE3569062D1
公开(公告)日：1989-04-27
申请号：DE3569062
申请日：1985-06-28
Applicant: IBM
Inventor： CHASE BRIAN DAVID , PATON ANDREW
Abstract: A colour CRT has stripes (10) of different colour light emission phosphors (r, g and b) deposited on a face plate (8) of the tube with the relative widths of the stripes being inversely proportional to the light emission efficiency of the phosphors. By this means the integrated brigthness of the emitted light from the different phosphor stripes is the same for the same value beam current. By using a novel double shadow mask arrangement, the widths of the beams from the three guns can be made to match, or substantially to match, the widths of the phosphor elements on which they land. Specifically the beam from one gun (not shown) is aligned with apertures through both masks in order to transmit a relatively wide portion of the beam onto the least efficient, in this case the red (r), phosphor. The portion of the beams transmitted by the first mask 7.1 for the other two guns (not shown) are further clipped by the relatively off-set apertures in the second mask 7.2. This arrangement enables the advantage of the balanced colour output from the screen to be enjoyed without loss of purity margin and provides a significant increase in brightness for a given beam current and/or resolution of the screen. The invention is applicable to CRTs employing shadow masks with slots and phosphor stripes, or holes and phosphor dots and also for CRTs driven in raster scan or vector mode.
-
公开(公告)号：DE3064685D1
公开(公告)日：1983-10-06
申请号：DE3064685
申请日：1980-04-18
Applicant: IBM
Inventor： JUDD IAN DAVID , PATON ANDREW
-
公开(公告)号：DE2233453A1
公开(公告)日：1973-02-22
申请号：DE2233453
申请日：1972-07-07
Applicant: IBM
-
-
-
-
-
-
-
Search Results
8
records
(took 0.018 seconds)
