Videos look dark displayed using projector, but OK in my laptop?
this one seems to be a common problem. I have been lecturing in several medical meetings and when colleagues show embedded videos in their presentations, they look very dark. Sometimes they are so dark that miss completely the point. I have had the same problem, to the point where I have had to skip a slide with video because it is so dark that it cannot be seen on the main projector screen. The curious thing is that in my laptop screen they look fine when I am presenting... but very dark when they are projected. Any ideas to solve this problem? Thanks in advance!
I don't have the same problem (i.e. videos too dark) but I'll bet it's the same solution. My problem was that the Keynote presentation on the LCD were way too dark. Funny thing was that if I opened up the systems preferences dialog box, they looked fine. Hummm.
Turns out that it was an issue with a change in the latest OS and how apple now handles the gamma setting in external displays. I don't recall all the details but Snow Leopard seems to use the new standard gamma of 2.2, making output too dark. The output gamma should be closer to 1.8.
To fix this, you need to adjust the color profile for the LCD projector that you are using.
To fix a projector, the projector must be plugged in and turned on to do this.
If you go to System Preferences, Displays and the Color option. You'll see a list of Display Profiles. There will be a dialog box on both the computer screen and the projector screen. To get them both on the computer screen to make editing a little easier you can click Gather Windows at the bottom of the dialog box on the computer.
I found it easier to just Calibrate the monitor and same a new profile - you can also uncheck the Show profiles for this display only and pick another profile like one of the sRGB profiles. To calibrate, click the Calibrate button (be sure you do it on the dialog for the LCD projector) I'd click Expert Mode - this will give you more options when adjusting the Gamma. Run through the Calibration routine making sure that you select a Gamma that is closer to 1.8 instead of the 2.2.
At the end, same the profile and then everything on the external display should look much better.
When researching my issue, there seemed to be consensus that using a digital interface the projector was better than the normal VGA cable. Didn't have a cable to try that.
Once you do this, the machine should always recognize the projector and behave properly. Seems a pain to have to do this but I didn't find any other alternative. The good thing is that I have not had to do this on every projector that I use. I have my own projector that has always worked properly.
I teach at a university where the rooms have mounted projectors - some work with no change, others I have to calibrate...
Try it out, hope it helps...
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*& Report ZTRANSFER_ORDER2 *
REPORT ZTRANSFER_ORDER2 .
*& Report ZTRANSFER_ORDER *
TABLES:sflight.
TYPE-POOLS : icon.
* G L O B A L I N T E R N A L T A B L E S
CLASS lcl_event_receiver DEFINITION DEFERRED.
types : begin of ty_mara,
matnr type matnr,
mtart type mtart,
mbrsh type mbrsh,
matkl type matkl,
bismt type bismt,
meins type meins,
end of ty_mara.
DATA: t_mara type STANDARD TABLE OF ty_mara.
* G L O B A L D A T A
DATA: ok_code LIKE sy-ucomm,
g_wa_mara type ty_mara.
DATA : t_fcat type LVC_T_FCAT.
DATA : l_VAR TYPE disvariant.
DATA : gs_layout type lvc_s_layo.
* Declare reference variables to the ALV grid and the container
G L O B A L D A T A
DATA: ok_code LIKE sy-ucomm.
Declare reference variables to the ALV grid and the container
DATA:
go_grid TYPE REF TO cl_gui_alv_grid,
go_custom_container TYPE REF TO cl_gui_custom_container.
data : it_toolbar TYPE stb_button,
event_receiver TYPE REF TO lcl_event_receiver.
* S T A R T - O F - S E L E C T I O N.
START-OF-SELECTION.
CALL SCREEN 100 .
*CLASS lcl_event_receiver DEFINITION.
CLASS lcl_event_receiver DEFINITION.
PUBLIC SECTION.
CLASS-METHODS:
*handling toolbar for interactive
handle_toolbar
FOR EVENT toolbar OF cl_gui_alv_grid
IMPORTING e_object e_interactive,
*handling menu button
handle_menu_button
FOR EVENT menu_button OF cl_gui_alv_grid
IMPORTING e_object e_ucomm,
*On click of the menu button
handle_user_command
FOR EVENT user_command OF cl_gui_alv_grid
IMPORTING e_ucomm.
PRIVATE SECTION.
ENDCLASS.
CLASS lcl_event_receiver IMPLEMENTATION.
METHOD handle_toolbar.
handle toolbar
CLEAR it_toolbar.
MOVE 'DETAIL' TO it_toolbar-function.
MOVE icon_detail TO it_toolbar-icon.
MOVE 2 TO it_toolbar-butn_type.
APPEND it_toolbar TO e_object->mt_toolbar.
ENDMETHOD. "handle_toolbar
METHOD handle_menu_button.
handle own menubuttons
IF e_ucomm = 'DETAIL'.
CALL METHOD e_object->add_function
EXPORTING
fcode = 'DISPLAY'
text = 'DISPLAY'.
ENDIF.
ENDMETHOD. "handle_menu_button
METHOD handle_user_command.
*On click
CASE e_ucomm.
WHEN 'DISPLAY'.
MESSAGE 'Menu Clicked' TYPE 'I'.
ENDCASE.
ENDMETHOD. "handle_user_command
ENDCLASS. "lcl_event_receiver IMPLEMENTATION
*& Module USER_COMMAND_0100 INPUT
MODULE user_command_0100 INPUT.
CASE ok_code.
WHEN 'EXIT'.
LEAVE TO SCREEN 0.
ENDCASE.
ENDMODULE. " USER_COMMAND_0100 INPUT
*& Module STATUS_0100 OUTPUT
MODULE status_0100 OUTPUT.
sET PF-STATUS 'STATUS'.
Create objects
IF go_custom_container IS INITIAL.
CREATE OBJECT go_custom_container
EXPORTING container_name = 'ALV_CONTAINER'.
CREATE OBJECT go_grid
EXPORTING
i_parent = go_custom_container.
PERFORM load_data_into_grid.
ENDIF.
ENDMODULE. " STATUS_0100 OUTPUT
*& Form load_data_into_grid
FORM load_data_into_grid.
Read data from table SFLIGHT
SELECT matnr mtart mbrsh matkl bismt meins
FROM mara
INTO corresponding fields of TABLE t_mara.
PERFORM fld_cate changing T_fcat.
l_var-report = sy-repid.
gs_layout-grid_title = 'Analysis Report'.
gs_layout-NO_TOOLBAR = 'X'.
gs_layout-BOX_FNAME = 'Selection'.
Load data into the grid and display them
caLL METHOD go_grid->set_table_for_first_display
EXPORTING
i_structure_name = 'S_MVKE'
i_save = 'A'
is_variant = l_var
is_layout = gs_layout
CHANGING
it_outtab = t_mara[]
it_fieldcatalog = t_fcat.
endform.
*& Module pai INPUT
text
MODULE pai INPUT.
data: l_valid type c.
clear ok_code.
break-point.
ok_code = sy-ucomm.
CASE ok_code.
WHEN 'EXIT'.
LEAVE TO SCREEN 0.
WHEN 'BACK'.
call method go_grid->check_changed_data
importing
e_valid = l_valid.
loop at t_mara into g_wa_mara.
endloop.
ENDCASE.
ENDMODULE. " pai INPUT
*& Form fld_cate
text
<--P_T_FCAT text
FORM fld_cate CHANGING P_T_FCAT TYPE lvc_t_fcat.
DATA : s_fcat type LVC_S_FCAT .
REFRESH: t_fcat.
CLEAR s_fcat.
s_fcat-fieldname = 'BOX1'.
s_fcat-coltext = 'Box1'.
s_fcat-seltext = 'Box1'.
s_fcat-CHECKBOX = 'X'.
s_fcat-EDIT = 'X'.
APPEND s_fcat TO P_T_FCAT.
CLEAR s_fcat.
s_fcat-row_pos = 1.
s_fcat-col_pos = 1.
s_fcat-fieldname = 'MATNR'.
s_fcat-ref_field = 'MATNR'.
s_fcat-ref_table = 'T_MARA'.
s_fcat-coltext = 'Material'.
s_fcat-seltext = 'Material'.
s_fcat-EDIT = 'X'.
APPEND s_fcat TO P_T_FCAT.
CLEAR s_fcat.
s_fcat-row_pos = 2.
s_fcat-col_pos = 2.
s_fcat-fieldname = 'MTART'.
s_fcat-ref_field = 'MTART'.
s_fcat-ref_table = 'T_MARA'.
s_fcat-coltext = 'Material type'.
s_fcat-seltext = 'Material type'.
APPEND s_fcat TO P_T_FCAT.
CLEAR s_fcat.
s_fcat-fieldname = 'BOX2'.
s_fcat-coltext = 'Box2'.
s_fcat-seltext = 'Box2'.
s_fcat-CHECKBOX = 'X'.
s_fcat-EDIT = 'X'.
APPEND s_fcat TO P_T_FCAT.
CLEAR s_fcat.
s_fcat-row_pos = 3.
s_fcat-col_pos = 3.
s_fcat-fieldname = 'MBRSH'.
s_fcat-ref_field = 'MBRSH'.
s_fcat-ref_table = 'T_MARA'.
s_fcat-coltext = 'Industry Sector'.
s_fcat-seltext = 'Industry Sector'.
APPEND s_fcat TO P_T_FCAT.
CLEAR s_fcat.
s_fcat-row_pos = 4.
s_fcat-col_pos = 4.
s_fcat-fieldname = 'MATKL'.
s_fcat-ref_field = 'MATKL'.
s_fcat-ref_table = 'T_MARA'.
s_fcat-coltext = 'Material Group'.
s_fcat-seltext = 'Material Group'.
APPEND s_fcat TO P_T_FCAT.
CLEAR s_fcat.
s_fcat-row_pos = 5.
s_fcat-col_pos = 5.
s_fcat-fieldname = 'BISMT'.
s_fcat-ref_field = 'BISMT'.
s_fcat-ref_table = 'T_MARA'.
s_fcat-coltext = 'Old material number'.
s_fcat-seltext = 'Old material number'.
APPEND s_fcat TO P_T_FCAT.
CLEAR s_fcat.
s_fcat-row_pos = 6.
s_fcat-col_pos = 6.
s_fcat-fieldname = 'MEINS'.
s_fcat-ref_field = 'MEINS'.
s_fcat-ref_table = 'T_MARA'.
s_fcat-coltext = 'Base Unit of Measure'.
s_fcat-seltext = 'Base Unit of Measure'.
APPEND s_fcat TO P_T_FCAT.
CLEAR s_fcat.
s_fcat-fieldname = 'BOX3'.
s_fcat-coltext = 'Box3'.
s_fcat-seltext = 'Box3'.
s_fcat-CHECKBOX = 'X'.
s_fcat-EDIT = 'X'.
APPEND s_fcat TO P_T_FCAT.
ENDFORM. " fld_cate .MOVE 2 TO it_toolbar-butn_type.
Try changing the 2 (menu) to 0 (button) and see if that helps
also you need to set the event handler after you create your alv object
set handler handle_toolbar for [whatever object is called].
Edited by: Kev Mycock on Jul 24, 2008 7:59 AM -
I have a version 1 iPad. I would like to be able to use my LCD projector to display content to my students. I have the dongle to attach to the projector, but can't make it work. The process DOES work with my friend's iPad 2. Any advice? Thanks!
Expanding on what deggie said, with an iPad 1 the app you're using must support video out. Only the iPad 2 can mirror the screen. The apps included with the iPad that output to external monitors are given here:
http://support.apple.com/kb/HT4108
For third-party apps, consult the app's documentation or contact the developer.
Regards.
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