As source of the image in a house cinema in overwhelming majority of cases serves DVD-pleer. So it has turned out, that the videoimage on DVD-Video is written down in one of two standards – in NTSC or PAL. The first has the sanction 7 on 4 pixels, the second – 7 on 576. To minimize the distortions arising at interpolation to the sanction of a matrix, and to keep image sharpness, the matrix of notebook themes a film-theatrical projector on a vertical should contain not less, than 4 or 5 pixels, accordingly. More better, but is more dear. Probably, orientation of the majority of manufacturers to the American market has led to that projectors of an initial level basically are equipped with matrixes 854x4 or at the best 960x540. Projector Toshiba TDP-MT4 is exception (let and not the only thing) – it has a matrix (DMD-chip) with the sanction 1024x576. For Russia where the standard is PAL, this good competitive advantage.
IK board DU and two AA a battery for it
Passport notebook themes characteristics Technology of displaying DLP, one chip DMD, 4-h-skorostnoy 6-ti-segmentny'y RGB an optical filter the Matrix 0,65, DDR degrees (DDP2000), 16: the Sanction of a matrix 1024x5 the Objective a zoom 1,2x, F = 2,75-3,03, f = 22,3-26, mm the Lamp 2 Vt, 1 Vt in a mode of low power Service life of a lamp 20 ch in a mode high mosch'nost
Light stream 8 ANSI lm Depth of color 16, million colors Contrast 3000: (the method of measurement is not specified) the Size of the projected image, a diagonal, 16: (in brackets distance up to
The screen at extreme notebook themes values of a zoom) a minimum of 0, m (N/A-1, 1, m (1,4-1,68...5, m (7,0-8,41) maximum of 7, m (10, m - N/A) Inputs of Video, composit, RC
Frequency of development of an entrance signal horizontal: 15-1 kGc vertical: 43- Hz Formats of an entrance signal television (composit and S-Video): NTSC 3.58, NTSC 4.43, PAL, PAL-M, PAL-N, PAL-60, SECAM componental video signals Y/Cb/Cr (Y/Pb/Pr): 480i/480p/576i/576p/720p/1080i
Analog RGB-signaly': VGA-SXGA notebook themes +, up to 1400x1050@ Hz digital DVI-RGB-signaly': VGA-SXGA (640x4 - 1280x1024), 480p/576p/720p/1080i Noise level dB in a mode of low power the Sizes (SHxVxG) 298x101x2 mm Weight of 2, kg Power consumption 3 Vt the Pressure of a feed 100-2 In, 50- Hz
Appearance Design of a projector strict also it is underlined functional. The majority of elements of a design have vectorially correct form (more often for a basis the circle is taken). Symmetry is whenever possible kept central'no-osevaya, even the round lattice on the top panel is added symmetric, notebook themes but is already pure decorative. The forward panel is extremely laconic, and barefaced heads of bolts in addition emphasize its ascetism and functionality.
Material of the case plastic with a milky-white covering, except for the forward panel it too plastic, but with a silvery covering. Buttons of management are on the top panel.
The block kursorny'h buttons is surrounded by the matte ring covering light-emitting diode indicators of a condition. Sockets of video inputs are freely located in one number notebook themes on the back panel to connect conveniently.
Also on the back panel are: a socket of a feed, the switch of a feed, window IK-priemnika and a socket for lock Kensingtona. The second IK-priemnik – in front behind a matte round window. The lobby a leg put forward from the case will help to raise a little a projector, and left back, getting out of the case, – to eliminate a skew when the projector simply costs on a horizontal notebook themes surface.
For traditional at a house cinema potolochnogo fastenings in the bottom of a projector are fixed metal plugs with a groove
The board small. All buttons identical, but them a little also are located they so, that easily are to the touch. Unfortunately, light-emitting diode illumination is not present. Buttons phosphoresce, but the sense from this accumulated luminescence has not enough, as hour through one and a notebook themes half findings in darkness of the button already practically are not shone, and designations of half of buttons are not highlighted basically.
The menu of Adjustments not so is a lot of, therefore and the menu has turned out simple: all was located on five pages. The main menu in which pages, are caused by button MENU, and one more page directly button SET UP.
Work with the main menu constantly causes sensation kognitivnogo notebook themes a discord: at transition to the chosen page its kind considerably varies – it changes a background and from text becomes tekstovo-graficheskoy, with icons. First you think, that something not has pressed that. Such transformation has only one positive moment: the column ikonok takes a few place on the screen and does not stir to adjustment of the image. CHitabel'nost' the menu low, as a font fine enough. The menu notebook themes is competently Russified
Switching of video inputs of groups of standard sockets. All is simple. For connection of video equipment with socket HDMI it is necessary to use kabel'-perehodnik with HDMI on DVI-D. RGB-signaly' SCART, most likely, are not supported. RCA-raz`emy' composit and componental video inputs from the case, and apertures under them small almost do not act, therefore cables with thick sockets (as at LUXMANN, for example) are inserted not up to the end.
Switching of video inputs is carried out by search of all by means of button INPUT of the board or on the case of a projector. It notebook themes is possible to include function of autorecognition of active connection then at inclusion or by pressing button INPUT the projector will stop on the first active video input
Management of a projection Focusing of the image on the screen is carried out by rotation external obodka an objective, and change of a focal length (the size of the image) ry'chajkom-vy'stupom on a ring of an objective.
To ry'chajku claims are not present, and a ring of focusing narrow and slippery. The objective is fixed concerning a matrix so, that notebook themes the bottom edge of the image is a little above an axis of an objective. Digital correction vertical trapeceidal'ny'h distortions has a range +/- degrees.
Modes of transformation only three: Full (Full), 4: and Increase (Zoom), each of which is harmoniously combined with one of three formats DVD-fil'mov anamorf, 4: and LetterBox, accordingly.
The picture on the screen is frozen by button FREEZE, and the conclusion of the notebook themes image temporarily stops button MUTE.
In the menu the type of a projection (face-to-face / on a gleam, usual / potolochnoe fastening) gets out. srednefokusny'y with the tendency to dlinnofokusnosti, therefore at its face-to-face displaying it is better to place a projector behind a line of the first of some spectators
Adjustment of the image by a Lot of the adjustments influencing the image, projector cannot brag, but the necessary minimum is present. The basis of color correction is defined by a current mode. In total them three: Dynamic (Dynamic), notebook themes the Standard (Standard) and Theatre (Theater).
In this number brightness decreases, and the degree of correction of color increases. To correct the image it is possible by means of of some adjustments: Contrast, Brightness, Chromaticity (the saturation, is not present at VGA-and DVI-podklyuchenii), the Shade (only for NTSC-signala at composit or S-Video-podklyuchenii), Clearness (planimetric sharpness, is not present at VGA-and DVI-podklyuchenii). To add or reduce the contribution of one of three primary colours it is possible adjustments Level R/G/B. In case of composit, S-Video-and componental connection it is possible to activate function of suppression of videonoise (parameter Reduction of handicapes).
The user notebook themes structures are not present, but adjustments of the image are automatically kept for each type of connection Additional opportunities Parameter Otkl. Without a signal defines behaviour of a projector at absence of video signal to not pay to this attention or the Parameter a Feed vkl will be switched off through 1, 5, 10, or minutes influences how the projector will behave at submission of a feed: to pass in an on duty mode or at once in working.
The notebook themes projector can be operated on interface RS-232C, raspayka a socket, parameters and the brief list of commands are resulted in a management. Measurement yarkostny'h characteristics of Measurement of a light stream, contrast and uniformity of illumination were spent on techniques
Light stream - in a mode of high capacity 9 lm - in a mode of low power 7 lm Uniformity of + %,- % Contrast 973: the Maximal light stream above, than are specified in characteristics. That should please. Uniformity of illumination of the screen good. Also it is possible notebook themes to note symmetry and monotony of reduction of brightness of the screen in directions from the central bottom area upwards and in the parties. Contrast very much and very high
Sound characteristics Attention! The resulted values of a level of sound pressure are received p
Mode Noise level, dBA Value judgment of high capacity of 37, Silently low power it is very silent
Projector very silent. Noise from system of ventilation does not irritate and 10 the mode does not prevent to look at 5 pixels films VGA-podklyuchenie For computer videocards, probably, is not standard, notebook themes and the progressive signal with parameters 7 on 5 projector does not understand, therefore testing was spent at the sanction 10 on 7 pixels (vertical frequency of Hz), that is interpolation was not in a horizontal direction. Autofine tuning under parameters VGA-signala works quickly and precisely. White and black fields very uniform, and color divorces are not present patches of light. Geometry ideal. Details differ both in shadows, and notebook themes in svetah. A scale grey in regular intervals grey. Colors bright and correct. Clearness very high. The width color kaymy', arising because of chromatic aberrations of an objective, does not exceed 1/ pixels.
DVI/HDMI-podklyuchenie The Same sanction 10 on 7 pixels has been established at testing DVI-podklyucheniya. Results as a whole similar, as well as for VGA-podklyucheniya. Artefacts are not present. Microcontrast very high. HDMI-podklyuchenie it was tested in modes 480p and 576p. A picture ideal Work with a source of composit and componental video signal YArkostnaya clearness (TVL) composit more than 5 it is excellent S-Video notebook themes more than 5 perfectly componental, cheresstrochny'y more than 5 perfectly componental, progressive more than 5 Perfectly color clearness (TVL) composit Sredne S-Video 1 perfectly componental, cheresstrochny'y 1 well componental, progressive 2 it is excellent YArkostnaya clearness very high. Color clearness corresponds to opportunities of analog interfaces at S-Video-and componental progressive connection, in other two cases the projector greases colors a little. Test tables with gradients of colors and with a scale grey have not revealed any artefacts of the image. Weak gradation of shades in shadows and on light sites of the image differ well. The notebook themes color balance correct, on the motionless worlds is not present artefacts.
In case of cheresstrochny'h signals procedure skleyki the staff from fields works with some secure, as a result for motionless objects almost the progressive mode at once is established, and objects in movement can be deduced on fields, with reduced vertical clearness. But artefacts in the form of a hairbrush we never saw. Smoothing of borders is not carried out, therefore on diagonals of moving objects it is possible to notice a notebook themes step. The projector has distinguished NTSC-videosignal in which basis there was a material with staff in a second, and has correctly executed transformation 3-2. Function of suppression of videonoise perfectly consults with the problem in case of static images, but behind moving objects it is possible to notice a tail from not cleaned noise.
Testing has shown, that alternation of colors at PAL-signale occurs to frequency of 2 Hz is corresponds 4-h-skorostnomu to an optical filter, as well as is specified in characteristics. Speed is enough greater notebook themes – effect of a rainbow, certainly, is present, but is swept not so up. Certainly, all is defined by specific features, and the picture odnochipovy'h DLP-proektorov irritates the some people by definition.
Conclusions Toshiba TDP-MT4 it is very worthy representative of film-theatrical projectors of an initial category. Let the sanction DMD-chipa does not hold out it up to a level is ready to HD, but with good DVD-pleerom in the complete set this projector will carefully inform up to the spectator notebook themes all to a detail and paints written down on DVD images. For realization of all potential it is necessary to recommend only to use digital or progressive componental connection of Advantage: High quality izobrajeni
Lacks: not so high color clearness at componental cheresstrochnom podklyucheni
We thank the company Russian Style for projector Toshiba TDP-MT4 given on testing.
Alexey Kudryavtsev (kalexk@ .com) It is published — on March, 28th, 2006
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