[Proj] To handle geographic info from HDF5 formated Satellite Data

[Aydin]

I try to handle geographic coordinates (lat/lon) from a sattellite data in 
HDF5 format. You can find necessary information below.
Could you please tell me how can initialize proj4 program and how can obtain 
lat/lon values for one pixel.

detailed info is below:

geo_number_rows = 4500
geo_number_columns = 3165
geo_pixel_size_x = 0.560648
geo_pixel_size_y = -0.56215554
geo_row_offset = -4759.928
geo_column_offset = -1636.3636
geo_dim_pixel = KM, KM
geo_pixel_def = CENTRE
geo_product_corners = -25.0, 25.0, -25.0, 75.0, 45.0, 75.0, 45.0, 25.0
geo_product_center = 9.719999, 50.47374

projection_name = EQUIDISTANT_CYLINDRICAL
projection_proj4_params = +proj=eqc +lat_ts = 0 +lon_0=0.000000