摘要:
There is provided a base station accommodated in a communications system for exchange of information between a base station and mobile stations (10) by time division multiplexing using a plurality of frequency bands. The base station comprises: a setting unit (15) configured to set a specific frequency band for each mobile station from among a plurality of frequency bands assigned to the communications system; a transmission data generation unit (11) for each mobile station configured to generate dedicated data and dedicated frequency band information indicating which frequency band is to be used for transmission of dedicated data information to each mobile station; and a transmission unit (13) configured to transmit the dedicated data and the dedicated frequency band information to the mobile station, by using the specific frequency band. The dedicated frequency band information indicates one or more dedicated frequency bands. One or more dedicated frequency bands are set from among the plurality of frequency band other than the specific frequency band. The specific frequency band and/or said one or more dedicated frequency bands are made variable along with time.
摘要:
An MgO layer (8) including an MgO crystal causing a cathode-luminescence emission having a peak within a range from 230nm to 250nm upon being excited by electron beams is provided in a position facing a discharge cell (C) formed in the discharge space between the front glass substrate (1) and the back glass substrate (4).
摘要:
A plasma display panel (PDP) including a front substrate (110) and a rear substrate (120) facing each other, a partition wall (124) interposed between the front substrate and the rear substrate to define a plurality of unit cells (S), each unit cell including a main discharge space (SP), an auxiliary discharge space (S1), and a step space (S2), the auxiliary discharge space and the step space being on opposite sides of the main discharge space along a stepped sidewall of the partition wall (124), pairs of scanning and sustain electrodes (X,Y) arranged adjacent the auxiliary discharge spaces and to the step spaces, respectively, address electrodes (122) extending to cross the scanning electrodes at a location adjacent to the auxiliary discharge spaces, a phosphor layer (125) formed at least in the main discharge spaces, and discharge gas filling the unit cell.
摘要:
A plasma display panel is divided into three or more regions. Address electrodes located in each region are classified into electrode groups. Each of the electrode groups is supplied with a driving signal from an additional data driver. Therefore, high speed driving is made possible during the address period and voltage drop in the electrodes can be compensated. Furthermore, since a discharge period can be relatively extended, the display quality can be improved.
摘要:
A plasma display panel is provided with a front board (2) wherein a dielectric layer (8) is formed to cover a display electrode (6) formed on a front glass substrate (3) and a protection layer (9) is formed on the dielectric layer (8); and a back board, which faces the front board (2) so as to form a discharge space, forms an address electrode in a direction intersecting with the display electrode and has a partitioning wall for partitioning the discharge space. The protection layer (9) forms a base film (91) on the dielectric layer (8) and is constituted by adhering agglomerated particles (92) wherein a plurality of crystal grains composed of a metal oxide are agglomerated, on the base film (91) so that the agglomerated particles are distributed over the entire surface. The agglomerated particles are adhered so that the ratio of the transmissivity of the front board (2) with the agglomerated particles (92) adhered thereto to the transmissivity of said front board without the agglomerated particles adhered thereto is 85% or more but not more than 99%. Thus, the PDP, which has improved electron discharge characteristics, charge retention characteristics, and achieves high image qualities, low cost and low voltage at the same time, is provided.