Integrated module having plurality of functions

Abstract

An integrated module according to an embodiment of the present invention may comprise: a printed circuit board; a first antenna for Bluetooth communication disposed on the printed circuit board; a second antenna and a third antenna for Wi-Fi communication disposed on the printed circuit board; a cover surrounding a portion of the printed circuit board excluding the first antenna to the third antenna; and a first connector and a second connector disposed on one side of an upper surface of the cover to receive terrestrial or satellite broadcasting, wherein the first antenna and the second antenna are disposed on one side of an upper surface of the printed circuit board, the third antenna is disposed on a side of the printed circuit board, adjacent to the one side of the upper surface on which the first antenna and the second antenna are disposed, the side on which the third antenna is disposed and the side on which the first connector and the second connector are disposed face each other, and a portion of a side surface of the cover is disposed in the printed circuit board.

Description

Integrated module with multiple functions

[0001] The present invention relates to an integrated module having multiple functions, and more particularly, to an integrated module capable of receiving a broadcast signal and performing Wi-Fi and / or Bluetooth communication as a single module.

[0002] In modern times, TVs are increasingly diverse in functionality. Consequently, their internal components include modules capable of supporting various functions beyond the tuner module. For example, as TVs evolve into smart TVs, modules supporting Wi-Fi communication are being added to support Internet access. Furthermore, modules supporting Bluetooth communication are being added to connect TVs to smartphones. However, signals received from outside the TV or transmitted externally can be quite strong. In particular, signals transmitted externally require high signal strength because they must be received by other devices, potentially interfering with other modules within the TV. To address this, each module is configured separately, and modules prone to interference are placed further apart. Furthermore, this approach imposes constraints on component placement within the module. While this approach is applicable to large TVs without spatial constraints, it remains problematic for smaller electronic devices.

[0003] The technical problem to be achieved by the present invention is to provide an integrated module capable of receiving a broadcast signal in a compact size and performing Wi-Fi and / or Bluetooth communication functions.

[0004] The technical problem to be achieved by the present invention is to provide an integrated module that does not cause performance degradation due to interference between broadcast signals and Wi-Fi and / or Bluetooth signals.

[0005] The technical problem to be achieved by the present invention is to provide an integrated module designed with shielding to prevent signal interference between broadcast signals and Wi-Fi and / or Bluetooth signals.

[0006] An integrated module according to an embodiment of the present invention includes a printed circuit board, a first antenna for Bluetooth communication disposed on the printed circuit board, a second antenna and a third antenna for Wi-Fi communication disposed on the printed circuit board, a cover covering a portion of the printed circuit board excluding the first antenna to the third antenna, and a first connector and a second connector disposed on one side of an upper surface of the cover to receive terrestrial or satellite broadcasting, wherein the first antenna and the second antenna are disposed on one side of the upper surface of the printed circuit board, the third antenna is disposed on one side adjacent to one side on which the first antenna and the second antenna are disposed, one side on which the third antenna is disposed and one side on which the first connector and the second connector are disposed are sides facing each other, and a part of the side of the cover may be a side disposed inside the printed circuit board.

[0007] In an integrated module according to an embodiment of the present invention, the printed circuit board includes a slot or a hole, and some of the side surfaces of the cover include a protruding portion, and the protruding portion of the side surface of the cover can be inserted into the slot or the hole.

[0008] In an integrated module according to an embodiment of the present invention, at least one of the number, size, and position of slots or holes included in the printed circuit board may be determined based on at least one of the size, shape, and weight of the cover.

[0009] In an integrated module according to an embodiment of the present invention, at least one of the number, size, and position of slots or holes included in the printed circuit board may be determined based on at least one of the size and thickness of the printed circuit board and the arrangement of components arranged on the printed circuit board.

[0010] In the integrated module according to an embodiment of the present invention, the second antenna and the third antenna may have different shapes.

[0011] In an integrated module according to an embodiment of the present invention, the spacing between the first antenna to the third antenna may be different from each other.

[0012] In the integrated module according to an embodiment of the present invention, the first antenna may be a chip-type antenna, and the second and third antennas may be Metal Press PIFA.

[0013] In an integrated module according to an embodiment of the present invention, the cover may be configured as an integrated chassis.

[0014] In an integrated module according to an embodiment of the present invention, a portion of the side of the cover that is positioned inside the printed circuit board may be absent.

[0015] In an integrated module according to an embodiment of the present invention, there may be multiple portions of the side surface disposed inside the printed circuit board, and their directions may be different from each other.

[0016] According to the present invention, an integrated module capable of receiving a broadcast signal and performing Wi-Fi and / or Bluetooth communication functions can be provided in a compact size.

[0017] According to the present invention, the size of an integrated module capable of receiving a broadcast signal and performing Wi-Fi and / or Bluetooth communication functions can be reduced, thereby sufficiently securing design space for other configurations.

[0018] According to the present invention, antennas for Wi-Fi communication or Bluetooth communication and other configurations can be separated by a partition wall, thereby blocking noise caused by signals radiated through the antennas.

[0019] According to the present invention, by widening the spacing between antennas for Wi-Fi communication or Bluetooth communication and connectors for receiving signals, noise between them can be reduced.

[0020] According to the present invention, antennas adjacent to a configuration for receiving terrestrial or satellite broadcasting are separated into slots, thereby preventing interference between signals.

[0021] According to the present invention, a circuit-related configuration is wrapped with a cover to protect it from external impact.

[0022] FIG. 1 is a perspective view of an integrated module according to one embodiment of the present invention.

[0023] FIG. 2 is a drawing showing a printed circuit board among integrated modules according to one embodiment of the present invention, and FIG. 3 is a drawing showing the upper surface of a printed circuit board on which some of the components according to one embodiment of the present invention are arranged.

[0024] Figure 4 is a perspective view of a cover of an integrated module according to one embodiment of the present invention.

[0025] FIGS. 5 to 8 are views of a printed circuit board having components arranged thereon and a cover coupled thereto, each viewed from different sides, according to one embodiment of the present invention.

[0026] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0027] However, the technical idea of ​​the present invention is not limited to some of the embodiments described, but can be implemented in various different forms, and within the scope of the technical idea of ​​the present invention, one or more of the components between the embodiments can be selectively combined or substituted for use.

[0028] In addition, terms (including technical and scientific terms) used in the embodiments of the present invention may be interpreted as having a meaning that can be generally understood by a person of ordinary skill in the technical field to which the present invention belongs, unless explicitly and specifically defined and described, and terms that are commonly used, such as terms defined in a dictionary, may be interpreted in consideration of the contextual meaning of the relevant technology.

[0029] Additionally, the terms used in the embodiments of the present invention are intended to describe the embodiments and are not intended to limit the present invention.

[0030] In this specification, the singular may also include the plural unless specifically stated otherwise in the phrase, and when it is described as “A and / or at least one (or more) of B, C”, it may include one or more of all combinations that can be combined with A, B, C.

[0031] Additionally, in describing components of embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used.

[0032] These terms are intended only to distinguish one component from another, and are not intended to limit the nature, order, or sequence of the component.

[0033] And, when a component is described as being 'connected', 'coupled' or 'connected' to another component, it may include not only cases where the component is directly connected, coupled or connected to the other component, but also cases where the component is 'connected', 'coupled' or 'connected' by another component between the component and the other component.

[0034] Additionally, when described as being formed or arranged "above or below" each component, "above" or "below" includes not only cases where the two components are in direct contact with each other, but also cases where one or more other components are formed or arranged between the two components. Furthermore, when expressed as "above" or "below", it can include the meaning of a downward direction as well as an upward direction based on one component.

[0035] FIG. 1 is a perspective view of an integrated module according to one embodiment of the present invention.

[0036] Referring to FIG. 1, the integrated module (100) may include a printed circuit board (110), a first antenna (120), a second antenna (130), a third antenna (140), a cover (150), a first connector (160), and a second connector (170).

[0037] A first antenna (120) and a second antenna (130) may be arranged on one side of a printed circuit board (110), and a third antenna (140) may be arranged on the other side adjacent to the one side. This is described based on the side with the longer length of the antenna, and if the standard is different, it can also be described that the first antenna (120), the second antenna (130), and the third antenna (140) are arranged on one side of the printed circuit board (110). The first antenna (120), the second antenna (130), and the third antenna (140) may be arranged to be spaced apart from each other. The separation distance between each antenna may be different, but is not limited thereto. The printed circuit board (110) may be electrically connected to the first antenna (120), the second antenna (130), and the third antenna (140) to receive or transmit signals. In FIG. 1, the first antenna (120) may be an antenna for transmitting and receiving signals for Bluetooth communication, and the second antenna (130) and the third antenna (140) may be antennas for transmitting and receiving signals for Wi-Fi communication. The first antenna (120), which is an antenna for Bluetooth communication, may be a chip-type antenna or a PCB (printed circuit board) type antenna, and the second antenna (130) and the third antenna (140), which are antennas for Wi-Fi communication, may be a Metal Press PIFA (Planar Inverted-F Antenna). In FIG. 1, the shapes of the second antenna (130) and the third antenna (140) are different from each other, but may also be the same. That is, both the second antenna (130) and the third antenna (140) may have the same shape as the second antenna, or may be the same shape as the third antenna. Alternatively, the shapes of the second antenna (130) and the third antenna (140) may be opposite to each other. Most of the area where the first antenna (120), second antenna (130), and third antenna (140) are not placed on the printed circuit board (110) can be covered by the cover (150).

[0038] The cover (150) can protect components on the printed circuit board (110) from external impact and can also prevent noise caused by signals radiated from the first antenna (120), the second antenna (130), and the third antenna (140) from affecting the circuit. According to one embodiment, the cover (150) can be configured as an integrated chassis.

[0039] Referring back to FIG. 1, a first connector (160) and a second connector (170) may be arranged on one side of the upper surface of the cover (150). The first connector (160) may be a connector for receiving a terrestrial broadcast signal, and the second connector (170) may be a connector for receiving a satellite broadcast signal.

[0040] That is, the integrated module (100) can receive a terrestrial broadcast signal through the first connector (160). VHF (54 kHz) and / or UHF (470 kHz) can be used as the frequency band of the terrestrial broadcast signal.

[0041] The integrated module (100) can receive a satellite broadcast signal through the second connector (170). The frequency of the satellite broadcast signal is distributed by dividing the world into three regions by the World Radiocommunication Conference (WRC). The frequency of Region 1, including Europe, Russia, and Africa, is 11.7 to 12.5 GHz (800 MHz band), etc.; the frequency of Region 2, including the Americas, is 12.2 to 12.7 GHz, etc.; and the frequency of Region 3, including Asia and Oceania, is 11.7 to 12.2 GHz (500 MHz band), etc., can be used as the frequency band of the satellite broadcast signal. Specifically, the satellite broadcast signal can be down-converted to a 2 GHz band and received through the second connector (170). The satellite broadcast signal received through the second connector (170) can be, for example, a signal of 950 to 2150 MHz. Terrestrial broadcast signals may be signals in the VHF (54 Hz) and / or UHF (470 Hz) bands.

[0042] In FIG. 1, the first connector (160) for receiving a terrestrial broadcast signal may be a Belling-Lee connector, and the second connector (170) for receiving a satellite broadcast signal may be an F connector.

[0043] According to one embodiment, one side where the first antenna (120) and the second antenna (130) are arranged, one side where the third antenna (140) is arranged, and one side where the first connector (150) and the second connector (160) are arranged may each be different sides. One side where the first antenna (120) and the second antenna (130) are arranged and one side where the first connector (150) and the second connector (160) are arranged may be adjacent sides, and one side where the first connector (150) and the second connector (160) are arranged and one side where the third antenna (140) is arranged may also be adjacent sides. Accordingly, one side where the first connector (150) and the second connector (160) are arranged and one side where the third antenna (140) is arranged may be sides facing each other.

[0044] According to one embodiment, the size of the integrated module (100) may be, but is not limited to, 48.4 x 32.9 x 6.7 mm.

[0045] FIG. 2 is a drawing showing a printed circuit board among integrated modules according to one embodiment of the present invention, and FIG. 3 is a drawing showing the upper surface of a printed circuit board on which some of the components according to one embodiment of the present invention are arranged.

[0046] Referring to FIG. 2, the printed circuit board (110) may include a plurality of slots and a plurality of holes. The plurality of slots and the plurality of holes included in the printed circuit board (110) may be for fixing a cover that can perform the function of a partition wall. A portion of the side of the cover may protrude, and the protruding portion may be inserted into a slot or hole of the printed circuit board (110), thereby making it easy and secure to couple the cover and the printed circuit board (110). According to one embodiment, the number, size, and position of the slots and / or holes for fixing the cover may be determined by considering at least some of the size, shape, and weight of the cover, the size and thickness of the printed circuit board (110), and the arrangement of components arranged on the printed circuit board (110). For example, the number of slots and / or holes included in the printed circuit board (110) may increase as the size of the cover increases. Alternatively, the number of slots and / or holes included in the printed circuit board (110) may increase as the size of the printed circuit board (110) increases. In addition, the printed circuit board (110) may further include a plurality of holes for fixing the connector and electrically connecting the connector to the printed circuit board (110).

[0047] The plurality of slots and the plurality of holes included in the printed circuit board (110) can perform a shielding function to prevent terrestrial signals and satellite broadcasting signals from interfering with signals for Wi-Fi or Bluetooth communication. That is, by placing covers on the slots and holes, they can serve as a partition wall, thereby not only blocking radiation noise, but also preventing electrical signals from flowing through the portions of the printed circuit board (110) where the slots and holes are located, so interference can not occur.

[0048] Referring back to FIG. 2, a portion of the side surface of the printed circuit board (110) may have a groove. Additionally, a portion of the side surface of the printed circuit board (110) may have a protrusion. A hole may be arranged in the protrusion, and a portion of the side surface of the cover may be inserted into the hole to couple the cover and the printed circuit board (110). The number and position of the grooves and / or protrusions arranged in a portion of the side surface of the printed circuit board (110) may be determined by taking into consideration at least a portion of the size, shape, and weight of the cover, the size and thickness of the printed circuit board (110), and the arrangement of components arranged on the printed circuit board (110).

[0049] Referring to FIG. 3, a chip (112) for terrestrial broadcasting, a chip (114) for Wi-Fi communication and / or Bluetooth communication, a chip (116) for satellite broadcasting, an antenna (120) for Bluetooth communication, antennas (130, 140) for Wi-Fi communication, and a third connector (118) may be disposed on the upper surface of the printed circuit board (110). According to one embodiment, the chip (112) for terrestrial broadcasting, the chip (114) for Wi-Fi communication and / or Bluetooth communication, the chip (116) for satellite broadcasting, and the third connector (118) may be disposed in an area covered by a cover. That is, components for receiving signals from the outside of the printed circuit board (110) may be disposed on the outside of the cover, and other components may be disposed on the inside of the cover.

[0050] More specifically, the chip (112) for terrestrial broadcasting is positioned below the first connector (160) for receiving terrestrial signals, so that the gap between the chip (112) for terrestrial broadcasting and the first connector (160) for receiving terrestrial signals can be relatively narrow. The narrower the gap between the chip (112) for terrestrial broadcasting and the first connector (160), the less interference that may occur in the signal received by the chip (112) for terrestrial broadcasting.

[0051] The chip (116) for satellite broadcasting is also placed below the second connector (170) for receiving satellite broadcasting signals, so that the gap between the chip (116) for satellite broadcasting and the second connector (170) for receiving satellite signals can be narrow.

[0052] Likewise, a chip (114) for Wi-Fi communication and / or Bluetooth communication may be placed around an antenna (120) for Bluetooth communication and an antenna (130, 140) for Wi-Fi communication. In FIG. 3, the chip (114) for Wi-Fi communication and / or Bluetooth communication is surrounded by an antenna (120) for Bluetooth communication and an antenna (130, 140) for Wi-Fi communication, so that the gap between the chip (114) for Wi-Fi communication and / or Bluetooth communication and the antenna (120) for Bluetooth communication and the antenna (130, 140) for Wi-Fi communication may be narrow.

[0053] In the present disclosure, connectors and antennas can be placed around the chip to reduce received signal loss and prevent interference in advance. However, as the size of the integrated module decreases, interference may occur. To further block this, a cover can be included to function as a barrier.

[0054] Figure 4 is a perspective view of a cover of an integrated module according to one embodiment of the present invention.

[0055] Referring to FIG. 4, the cover (150) may include an upper surface (151) and a side surface at least partially connected to the upper surface (151). The first, second, and third sides of the upper surface (151) may be a single straight line, but the fourth side may be a stepped side composed of a plurality of straight lines. Considering the shape and ease of manufacturing of an antenna for Bluetooth communication and an antenna for Wi-Fi communication, the fourth side of the upper surface (151) may be a stepped side. The side surfaces connected to the first, second, and third sides of the upper surface (151) may be the first, second, and third side surfaces, and may be configured as one side each. The side surfaces connected to the fourth side of the upper surface (151) may be configured as a plurality of sides.

[0056] The first, second, and third sides can be connected to the upper surface (151) of the cover (150), and the first, second, and third sides can be in contact with one or two other sides. For example, the first side (152) can be in contact with the second side (153), and the second side (153) can be in contact with the first side (152) and the third side (154). In addition, the third side (154) can be in contact with the second side (153). Some of the sides include a protruding portion, and the side in contact with it includes a hole or a slit. That is, one of the sides protrudes, and the side in contact with it includes a hole or a slit, and the protruding portion can be inserted into the hole or the slit to be connected.

[0057] In FIG. 4, the first side (152) and the third side (154) include holes or slits, and the second side (153) includes a protruding portion and is connected to each other, but this is not limited thereto. For example, the first side (152) and the third side (154) may include a protruding portion, and the second side (153) may include a hole or slit and be connected to each other.

[0058] Referring back to FIG. 4, the side surfaces connected to the fourth side of the upper surface (151) may be composed of a total of five (155, 156, 157, 158, 159). Of these, the side surfaces (155, 159) at the most edge may be connected to other side surfaces of the upper surface (151), that is, the first side surface (152) and the third side surface (154). In addition, some of the five (155, 156, 157, 158, 159) may be connected to each other. Some of the side surfaces may have portions that are not connected to other side surfaces, and air may circulate through the portions of the cover that do not have sides, thereby dissipating heat. The portions of the cover that do not have sides may have different directions.

[0059] According to one embodiment, the cover (150) may be constructed as an integral chassis.

[0060] FIGS. 5 to 8 are views of a printed circuit board having components arranged thereon and a cover coupled thereto, each viewed from different sides, according to one embodiment of the present invention.

[0061] Referring to FIG. 5, a first antenna (120), a second antenna (130), and a third antenna (140) may be arranged on a printed circuit board (110) to which a cover (150) is coupled. The first antenna (120), the second antenna (130), and the third antenna (140) may be arranged to be spaced apart from each other. The spacing between the respective antennas may be different, but is not limited thereto. The cover (150) may surround other components on the printed circuit board (110) except for the first antenna (120), the second antenna (130), and the third antenna (140) from the front, back, left, right, and top. A first connector (not shown) and a second connector (not shown) may be arranged on the cover (150). The first side (152) of the cover may be positioned outside the side of the printed circuit board (110) and may include slits (or holes) on the left and right sides. A protruding portion of the second side (153) of the cover may be inserted into the slit of the first side (152). The two sides may be joined to each other by the slit and the protruding portion, and may be easily joined without a separate tool. Similarly, the second side (153) of the cover may be positioned outside the side of the printed circuit board (110).

[0062] Fig. 6 illustrates a printed circuit board having the components of Fig. 5 arranged thereon and a cover coupled thereto, rotated 90 degrees counterclockwise. Referring to Fig. 6, the second side (153) of the cover includes protruding portions on the left and right sides, and the third side (154) of the cover includes slits (or holes) on the left and right sides, like the first side. As in Fig. 5, the third side (154) and the second side (153) of the cover can be coupled by the slits and the protruding portions. In addition, the third side (154) of the cover can also be arranged outside the side of the printed circuit board (110).

[0063] Fig. 7 illustrates a printed circuit board having the components of Fig. 6 arranged thereon and a cover coupled thereto, rotated 90 degrees counterclockwise. Referring to Fig. 7, the third side (154) of the cover may also include slits (or holes) on the left and right sides, like the first side (152). A protruding portion of the other side may be inserted into the slit of the third side (154), thereby enabling easy coupling.

[0064] Some of the fourth sides (159) of the cover may be positioned outside the sides of the printed circuit board (110), while other parts (155, 157) may be positioned on the printed circuit board (110). All of the fourth sides of the cover include a protruding portion at the bottom so that they can be inserted into a slit or hole of the printed circuit board (110).

[0065] A first antenna (120), a second antenna (130), and a third antenna (140) may be arranged on an externally exposed portion of a printed circuit board (110). The first antenna (120) may be an antenna for transmitting and receiving signals for Bluetooth communication, and the second antenna (130) and the third antenna (140) may be antennas for transmitting and receiving signals for Wi-Fi communication. The first antenna (120), which is an antenna for Bluetooth communication, may be a chip-shaped antenna or a PCB (printed circuit board)-shaped antenna, and the second antenna (130) and the third antenna (140), which are antennas for Wi-Fi communication, may be Metal Press PIFA. In FIG. 7, the shapes of the second antenna (130) and the third antenna (140) are different from each other, but may be the same. For example, both the second antenna (130) and the third antenna (140) may have the same shape as the second antenna or may have the same shape as the third antenna. Alternatively, the shapes of the second antenna (130) and the third antenna (140) may be opposite to each other.

[0066] Fig. 8 shows a printed circuit board having the components of Fig. 7 arranged thereon and a cover coupled thereto, rotated 90 degrees counterclockwise. Referring to Fig. 8, some of the side surfaces (152, 159) of the cover may be arranged on the outside of the side surface of the printed circuit board (110), and other parts (155, 156, 157, 158) may be arranged on the printed circuit board (110). All of the side surfaces arranged on the printed circuit board (110) include a protruding portion at the bottom, so that they may be inserted into a slit or hole of the printed circuit board (110).

[0067] A first antenna (120), a second antenna (130), and a third antenna (140) may be arranged on an externally exposed portion of a printed circuit board (110). The first antenna (120), the second antenna (130), and the third antenna (140) may be arranged spaced apart from each other. The distance between each antenna may be different from each other, but is not limited thereto.

[0068] Referring to FIGS. 5 to 8, some of the side surfaces of the cover include protruding portions. The protruding portions allow the integrated module to be easily combined with other components.

[0069] Although the above description focuses on examples, these are merely examples and do not limit the present invention. Those skilled in the art will appreciate that various modifications and applications not exemplified above are possible without departing from the essential characteristics of the present invention. For example, each component specifically shown in the examples can be modified and implemented. In addition, differences related to such modifications and applications should be construed as being included within the scope of the present invention defined in the appended claims.

Claims

1. Printed circuit board; A first antenna for Bluetooth communication arranged on the above printed circuit board; A second antenna and a third antenna for Wi-Fi communication arranged on the above printed circuit board; A cover that surrounds a portion of the printed circuit board excluding the first antenna to the third antenna; and A first connector and a second connector are disposed on one side of the upper surface of the cover and are configured to receive terrestrial or satellite broadcasting. The first antenna and the second antenna are arranged on one side of the upper surface of the printed circuit board, The third antenna is disposed on a side adjacent to the side where the first antenna and the second antenna are disposed, The side where the third antenna is arranged and the side where the first connector and the second connector are arranged are sides facing each other, An integrated module, wherein a portion of the side of the above cover is a side disposed inside the printed circuit board.

2. In paragraph 1, The above printed circuit board includes a slot or hole, Some of the sides of the above cover include protruding portions, An integrated module in which a protruding portion of the side of the cover is inserted into the slot or hole.

3. In paragraph 2, An integrated module, wherein at least one of the number, size and position of slots or holes included in the printed circuit board is determined based on at least one of the size, shape and weight of the cover.

4. In paragraph 2, An integrated module, wherein at least one of the number, size and position of slots or holes included in the printed circuit board is determined based on at least one of the size and thickness of the printed circuit board and the arrangement of components arranged on the printed circuit board.

5. In paragraph 1, The second antenna and the third antenna are integrated modules having different shapes.

6. In paragraph 1, An integrated module wherein the spacing between the first antenna and the third antenna is different from each other.

7. In paragraph 1, The above first antenna is a chip-shaped antenna, The second and third antennas are integrated modules that are Metal Press PIFA (Planar Inverted-F Antenna).

8. In paragraph 1, The above cover is an integrated module consisting of an integral chassis.

9. In paragraph 1, An integrated module, wherein a portion of the side of the cover that is positioned inside the printed circuit board is missing.

10. In paragraph 9, An integrated module in which a plurality of sides arranged inside the printed circuit board have no said part and their directions are different from each other.

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