Sony VPH-G90E, Service Manual

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2-45 VPH-G90E/G90U/G90M
[Writing and Reading of Input Memory]
The reading and writing (load/save) of data differs between new input signals and existing input signals.
1
Data reading (load)
<For new input signals>
When determined as “new input signal” as a result of the differentiation of the input signal, the most appropriate
memory (memory with the signal most resembling the input signal <input signal type, and fH> ) is determined from the
original input memories, and it is read (loaded) in the area for changing various data (RAM).
<For existing input signals>
If a signal with the same identification conditions exist in the custom input memory as a result of differentiation of input
signals, it is determined that the input memory for that signal has been already created, that is, it is an existing input
signal, and the data of the custom input memory is read (loaded) to the area changing various data (RAM).
Timing
When the POWER is turned ON
(As soon as the input signal is confirmed)
When the input signal is input
(As soon as the input signal is confirmed)
When the CH is switched
(As soon as the input signal is confirmed)
When the input signal is changed
(As soon as the input signal is confirmed)
When Video Memory is set to OFF
(SIRCS, communication, etc.)
Table 18. Reading of Input Memory (Loading)
<When NO-INPUT>
When determined as NO-INPUT as a result of the differentiation of the input signal, data from the original input
memory set in that channel or determined from the input signal type in the board information is read to the area
changing various data (RAM) and set in the unit.
Memory loaded from for every input signal type immediately before NO-INPUT
O
VIDEO/S-VIDEO/COMPONENT/SDI : Original INPUT Memory No. 0
O RGB (Including 15 kRGB) : Same No. as the oscillation frequency of fH set at INT.OSC pattern of original input
memories No. 1 to 10.
O
HDTV system (YPBPR, GBR) : Original INPUT Memory No. 12
O
Signal set to DRC ON : Original INPUT Memory NO. 11