摘要:
A communications system for communications by a multicarrier transmission mode between a plurality of communications apparatuses (10, 20) wherein an overall frequency band assigned to the communications system is divided into a plurality of frequency bands each having a constant bandwidth (for example band 1 to band 4) and a specific band (for example band 1) among these divided bands is used to transmit used frequency band information and thereby determine the assignment of the remaining bands (band 2 to band 4) to be used between said communications apparatuses. Here, the specific band is defined as a main band for transmitting control channel information including said used frequency band information and also data channel information. The main band may also be added with an extension band for transmitting further data channel information. Further, the main band and extension band can be changed in the frequency band used along with time or can be changed in the number thereof. Both of the main band and the extension bands are preferably used by multiplexing by some of communications apparatuses.
摘要:
A multi display device is disclosed. The multi display device includes a first display panel (100), a first frame (200A) positioned on a back surface of the first display panel, a first electromagnetic shielding layer (214) including a first portion positioned on a front surface of the first display panel and a second portion (1300) positioned on the side of the first display panel, a second display panel (110) positioned adjacent to the first display panel, a second frame (200B) positioned on a back surface of the second display panel, and a second electromagnetic shielding layer (214B) including a first portion positioned on a front surface of the second display panel and a second portion (1310) positioned on a side surface of the second display panel.
摘要:
A multi plasma display panel is disclosed. The multi plasma display panel includes a plurality of plasma display panels positioned adjacent to one another. Each of the plasma display panels includes a front substrate on which a first electrode is positioned, a rear substrate on which a second electrode is positioned to cross the first electrode, a barrier rib (212) between the front substrate and the rear substrate (211), the barrier rib providing a plurality of discharge cells (600),(610),(620), and an exhaust hole (200) on the rear substrate (211), the exhaust hole being formed in at least one of the plurality of discharge cells. A size of a discharge cell (600) in which the exhaust hole is formed is greater than a size of at least one discharge cell in which the exhaust hole is not formed.
摘要:
Filters for electronic displays which contain squarylium compounds represented by the general formula (I) and can selectively intercept rays of light having wavelengths lowering color purity to thereby provide clear images: (I) wherein R1 is hydrogen, alkyl, or the like; R2, R3 and R4 are each hydrogen, halogeno, alkyl, or the like; and X is a group represented by the general formula (A) or the like: (A) (wherein R5, R6, R7, and R8 are each hydrogen, halogeno, alkyl, or the like; and R9 and R10 are each hydrogen, alkyl, or the like).
摘要:
If Wb, Wg, and Wr are the widths of blue, green, and red discharge cells, and Db, Dg, and Dr are the widths of the address electrodes (15b, 15g, 15r) corresponding to the respective colors, the relationships among them are given by Wb⊃Wg⊃Wr, and Db⊃Dg⊃Dr. Therefore the amounts of charge accumulated in the respective color discharge cells can be adjusted by write discharge, and the complete operation write voltages of the discharge cells of the colors are uniformed. As a result, an AC plasma display panel free from erroneous discharge and discharge flicker and having a high display quality, especially an improved white displays quality is provided.
摘要:
The initializing period of at least one of a plurality of sub-fields constituting one field is a selective initializing period for selectively initializing discharge cells in which sustain discharge has occurred in the sustaining period of the preceding sub-field. In the sustaining period of the sub-field prior to the sub-field including the selective initializing period, voltage Vr is applied to a priming electrode (PRi) for causing discharge between the priming electrode (PRi) and corresponding scan electrode (SCi) using the priming electrode (PRi) as a cathode.
摘要:
A method of driving a plasma display panel including priming electrodes (PR 1 to PR n ). In the writing period of a sub-field, prior to scanning of respective scan electrodes (SC 1 to SC n ), priming discharge is caused between the scan electrodes (SC 1 to SC n ) and the priming electrodes (PR 1 to PR n ). The time interval between the application of voltage to the priming electrodes (PR 1 to PR n ) for causing the priming discharge and the scanning of the corresponding scan electrodes (SC 1 to SC n ) is set within 10 µs.
摘要:
An electrodeless lamp comprises an envelope (12) containing a plasma forming fill which includes at least one of sulfur and selenium when excited which emits principally visible light, which is in the form of molecular radiation. The envelope (12) has a diameter of less than one half inch. Means (1) are provided for generating electromagnetic energy. Further means (2, 3, 4, 5, 6) are provided for coupling said electromagnetic energy to said envelope to excite said fill, which in the absence of envelope rotation or with rotation at an insufficient speed, forms a discharge (14) which does not substantially fill the interior volume of said envelope (12). By additional means (13) the envelope (12) is rotated at a fast enough rate so as to cause the discharge (15) formed by the fill to substantially fill the interior volume of the envelope (12).