1. A protective shell for an aircraft galley wall having an above work deck area and a below work deck area, comprising:
an outer skin having a thickness and micro-perforations along an outer surface;
an intermediate layer comprising vacuum insulated panels, where a thickness of said intermediate layer is greater than the thickness of the outer skin; and
an interior layer comprising carbon fiber composite having a thickness that is greater than a thickness of the intermediate layer.
2. The protective shell for an aircraft galley wall of claim 1, further comprising a layer of open cell acoustic foam between the skin and the interior layer.
3. The protective shell for an aircraft galley wall of claim 1, wherein a ratio of outer skin thickness to intermediate layer thickness is 1:2.
4. The protective shell for an aircraft galley wall of claim 1, wherein the micro-perforations are conical.
5. The protective shell for an aircraft galley wall of claim 2, wherein the layer of open cell acoustic foam is present only above the work deck.
6. The protective shell for an aircraft galley wall of claim 2, wherein a ratio of a thickness of the acoustic open cell foam to the thickness of the carbon fiber composite panel is 2:1.
7. The protective shell for an aircraft galley wall of claim 1, wherein the vacuum insulation panels are located adjacent thermal sinks to reduce energy loss.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method for encoding a digital video signal, said digital video signal comprising some sets of objects (OBJ) with associated shapes, characterized in that it comprises the steps of:
Defining information (FLAG) for determining if the shape of an object (OBJ) is to be encoded, or its complement’s one, and
As a function of this information (FLAG), encoding said shape or its complement.
2. A method of processing a digital video signal as claimed in claim 1, characterized in that the complement is the complement (NOT_OBJ) of an object (OBJ) in an image frame.
3. A method of processing a digital video signal as claimed in claim 1, characterized in that a bounding box (BOUND_BOX) is associated with an object (OBJ) and the complement is the complement (NOT_OBJ_BB) of an object (OBJ) within its bounding box (BOUND_BOX).
4. A method of processing a digital video signal as claimed in claim 3, characterized in that it has a further step of encoding the bounding box coordinates of said object (OBJ).
5. A method of processing a digital video signal as claimed in any one of the claims 1 to 4, characterized in that the information is activated when an object (OBJ) has a bounding box (BOUND_BOX) with frontiers in common with an image comprising said object (OBJ).
6. A method of processing a digital video signal as claimed in any one of the claims 1 to 5, characterized in that when the bounding box (BOUND_BOX) of an object (OBJ) is greater than the bounding box (BOUND_BOX) of its complement (NOT_OBJ, NOT_OBJ_BB), its complement’s shape is encoded.
7. A computer program product for an encoder (ENC), comprising a set of instructions, which, when loaded into said encoder (ENC), causes the encoder (ENC) to carry out the method claimed in claims 1 to 6.
8. A computer program product for a computer, comprising a set of instructions, which, when loaded into said computer, causes the computer to carry out the method claimed in claims 1 to 6.
9. A method for decoding a digital video signal, said digital video signal comprising some sets of objects (OBJ) with associated shapes, characterized in that it comprises the steps of:
Retrieving information (FLAG), which determines if the shape of an object (OBJ) has been encoded or its complement’s one,
As a function of said information (FLAG), decoding said shape or its complement (NOT_OBJ, NOT_OBJ_BB), and
If the complement has been decoded, retrieving the shape as a function of said complement (NOT_OBJ, NOT_OBJ_BB).
10. An encoder (ENC) for encoding a digital video signal, said digital video signal comprising some sets of objects (OBJ) with associated shapes, characterized in that it comprises an information (FLAG) for determining if the shape of an object (OBJ) is to be encoded, or its complement’s one, and encoding means for encoding said shape or its complement as a function of said information (FLAG).
11. A decoder (DEC) for decoding a digital video signal, said digital video signal comprising some sets of objects (OBJ) with associated shapes, characterized in that it comprises decoding means for retrieving an information (FLAG), which determines if the shape of an object (OBJ) has been encoded or its complement’s one, for decoding said shape or its complement as a function of said information (FLAG), and for retrieving the shape as a function of said complement if the complement (NOT_OBJ, NOT_OBJ_BB) has been decoded.
12. A video communication system (SYS), which is able to receive a digital video signal, comprising a transmitter (REC) with an encoder (ENC) as claimed in claim 10 for encoding said video signal, a transmission channel (CH) for transmitting the encoded video signal and a receiver (RECEIV) with a decoder (DEC) as claimed in claim 11 for decoding said encoded video signal.