CN113763906A - Image signal processing device, terminal - Google Patents
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- CN113763906A CN113763906A CN202010506862.7A CN202010506862A CN113763906A CN 113763906 A CN113763906 A CN 113763906A CN 202010506862 A CN202010506862 A CN 202010506862A CN 113763906 A CN113763906 A CN 113763906A
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Abstract
An image signal processing device and a terminal, wherein the image signal processing device is provided with an input end and an output end, the input end is used for receiving external image signals, the output end is used for outputting signals to the outside, and the image signal processing device comprises a switch module, a receiving module, an image processing module and a sending module; one end of the switch module is connected with the input end, and the other end of the switch module is connected with the output end; the receiving module, the image processing module and the sending module form a serial connection path; the switch module at least has a first state and a second state, when the switch module is in the first state, the image signal is transmitted from the input end to the output end through the switch module, and the receiving module, the image processing module and the sending module are bypassed; when the switch module is in the second state, the switch module transmits the image signal to the receiving module, and after the image signal is processed by the image processing module, the sending module transmits the processed image signal to the output end. The present embodiment can reduce the power consumption of the image processing device.
Description
Technical Field
The present invention relates to the field of image processing, and in particular, to an image signal processing device and a terminal.
Background
With the rapid development of mobile phones, the photographing function is more and more concerned by people, and the effect of photographing by the camera and the experience of the processing capability of the camera chip and the mobile phone platform are in great relation. In order to further enhance the effect of the camera or obtain a better effect on the middle and low-end mobile phone, an Image Signal Processor (ISP) chip may be additionally added to the mobile phone to perform partial preprocessing, thereby improving the Image quality and shortening the Image processing time of the platform. The ISP chip needs the mainboard to supply power to the ISP chip additionally, the power consumption of the ISP chip is greatly improved along with the improvement of the processing capacity of the ISP chip, and the heat productivity of the chip is improved along with the improvement of the power consumption of the ISP chip.
Referring to fig. 1, fig. 1 is a schematic diagram of an ISP chip provided in the prior art, where the ISP chip 12 includes an input end (RX) 121, an image processing module ISP 122, and an output end (TX) 123 of the ISP chip, and image data acquired by an image sensor flows out through an image sensor output end (TX)11, and is transmitted to a platform end input end (RX)13 through the ISP chip 12; when the image processing function is used, the image signal is transmitted from RX 121 of the ISP chip to ISP 122 for processing through the digital processing branch of the ISP chip 12, and the processed image signal is transmitted from TX 123 of the ISP chip to platform RX 13; if the image processing function is not needed, the digital processing branch can be bypassed, namely, the data is directly transmitted to the TX 123 of the ISP chip by the RX 121 of the ISP chip through the Bypass branch in the figure, so that the purpose of saving power is achieved.
However, although the power consumption can be reduced by bypassing the digital processing branch, the data still needs to pass through the data Receiving (RX) circuit of the ISP chip and then be sent to the data processing platform of the mobile phone through the data Transmitting (TX) circuit, and the power consumption and heat generation of the receiving circuit and the transmitting circuit cannot be ignored when the amount of data to be transmitted is large.
Disclosure of Invention
The invention solves the technical problem of how to effectively reduce the power consumption of the ISP chip.
In order to solve the above technical problem, an embodiment of the present invention provides an image signal processing device, which has an input end and an output end, wherein the input end is configured to receive an external image signal, and the output end is configured to output a signal to the outside; one end of the switch module is connected with the input end, and the other end of the switch module is connected with the output end; the receiving module, the image processing module and the sending module form a serial connection path; the switch module has at least a first state and a second state, wherein when the switch module is in the first state, the image signal is transmitted from the input terminal to the output terminal through the switch module, and the receiving module, the image processing module and the transmitting module are bypassed; when the switch module is in a second state, the switch module transmits the image signal to the receiving module, and after the image signal is processed by the image processing module, the sending module transmits the processed image signal to the output end.
Optionally, the switch module includes: the first switch is provided with a first end, a second end and a third end, the first end of the first switch is conducted with the second end of the first switch or the third end of the first switch, the first end of the first switch is connected with the input end, and the second end of the first switch is connected with the receiving module; the first switch is connected with the second end of the second switch or the third end of the second switch, the third end of the second switch is connected with the third end of the first switch, the second end of the second switch is connected with the sending module, and the first end of the second switch is connected with the output end.
Optionally, when the switch module is in the first state, the first terminal of the first switch is conducted with the third terminal of the first switch, and the first terminal of the second switch is conducted with the third terminal of the second switch; when the switch module is in the second state, the first end of the first switch is conducted with the second end of the first switch, and the first end of the second switch is conducted with the second end of the second switch.
Optionally, the sending module is connected to the output end, and the switch module includes: a third switch having a first end, a second end, and a third end, the first end of the third switch being connected to the second end of the third switch or the third end of the third switch, the first end of the third switch being connected to the input terminal, the second end of the third switch being connected to the receiving module, the third end of the third switch being connected to the output terminal; when the switch module is in a first state, the first end of the third switch is conducted with the third end of the third switch; when the switch module is in the second state, the first end of the third switch is conducted with the second end of the third switch.
Optionally, the sending module is connected to the output end, and the switch module includes: a fourth switch having a first terminal and a second terminal, the first terminal of the fourth switch being connected to the input terminal, the second terminal of the fourth switch being connected to the output terminal; a fifth switch having a first end and a second end, the first end of the fifth switch being connected to the input terminal, the second end of the fifth switch being connected to the receiving module; when the switch module is in a first state, the first end of the fourth switch is connected with the second end of the fourth switch, and the first end of the fifth switch is disconnected with the second end of the fifth switch; when the switch module is in the second state, the first end of the fourth switch is disconnected with the second end of the fourth switch, and the first end of the fifth switch is connected with the second end of the fifth switch.
Optionally, the image signal is acquired from an image sensor.
Optionally, the image signal processing device is a semiconductor chip.
The embodiment of the invention also provides a terminal, which comprises an image sensor and any one of the image signal processing devices, wherein the image sensor is used for outputting the image signal.
Optionally, the terminal further includes a controller, and the controller is configured to control a state of the switch module.
Optionally, if the image sensor is in the preview mode, the switch module in the image signal processing device is in the first state.
Optionally, if the image sensor is in a shooting mode, the switch module in the image signal processing chip is in a second state.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
according to the image signal processing device provided by the embodiment of the invention, by controlling the state of the switch module, when the image signal acquired from the outside is not required to be processed, the image signal is directly transmitted to the external platform through the input end and the output end, so that the image signal is not required to pass through the receiving module and the transmitting module of the ISP, the receiving module and the transmitting module of the ISP are prevented from generating power consumption and heating because of the transmission of the image signal, and the power loss of the image processing device is further reduced.
Further, the switch module is switched between the first state and the second state through the two selection switches. The first switch and the second switch may be MIPI switches (switches). The MIPI switch is used as a switch capable of switching data, extremely low power consumption is needed only during switching, and basically no power is consumed after switching.
Furthermore, the switch module can be switched between the first state and the second state through a selection switch.
Drawings
Fig. 1 is a schematic diagram of an image signal processing device in the prior art;
fig. 2 is a schematic structural view of a first image signal processing device of an embodiment of the present invention;
fig. 3 is a schematic configuration diagram of a second image signal processing device of the embodiment of the present invention;
fig. 4 is a schematic configuration diagram of a third image signal processing device of the embodiment of the present invention;
fig. 5 is a schematic configuration diagram of a fourth image signal processing device of the embodiment of the present invention.
Detailed Description
As background art, when the amount of data being transmitted by the receiving circuit and the transmitting circuit is large, the power consumption and heat generation of the receiving circuit and the transmitting circuit cannot be ignored, and the power consumption of the ISP chip is high.
To solve the problem, an embodiment of the present invention provides an image signal processing device, which has an input end and an output end, wherein the input end is used for receiving an external image signal, and the output end is used for outputting a signal to the outside; one end of the switch module is connected with the input end, and the other end of the switch module is connected with the output end; the receiving module, the image processing module and the sending module form a serial connection path; the switch module has at least a first state and a second state, wherein when the switch module is in the first state, the image signal is transmitted from the input terminal to the output terminal through the switch module, and the receiving module, the image processing module and the transmitting module are bypassed; when the switch module is in a second state, the switch module transmits the image signal to the receiving module, and after the image signal is processed by the image processing module, the sending module transmits the processed image signal to the output end.
By this method, the power consumption of the image processing device can be further reduced when the image signal does not need to be processed.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Specifically, referring to fig. 2, fig. 2 is a schematic structural diagram of an image signal processing device in an embodiment, the image signal processing device 200 has an input end 21 and an output end 22, the input end 21 is used for receiving an external image signal, the output end 22 is used for outputting a signal to the outside, and the image signal processing device 200 includes a switch module 201, a receiving module 202, an image processing module 203, and a sending module 204;
one end of the switch module 201 is connected to the input end 21, and the other end of the switch module 201 is connected to the output end 22;
the receiving module 202, the image processing module 203 and the sending module 204 form a serial path;
the switch module 201 has at least a first state and a second state, wherein,
when the switch module 201 is in the first state, the image signal is transmitted from the input terminal 21 to the output terminal 22 through the switch module 201, and the receiving module 202, the image processing module 203 and the sending module 204 are bypassed;
at this time, the external image signal does not need to be processed by the image processing module, and no image signal passes through the serial path formed by the receiving module 202, the image processing module 203, and the transmitting module 204, and at this time, the receiving module 202 and the transmitting module 204 do not generate power consumption and heat due to the transmission of the image signal.
Optionally, the image processing module is an ISP, the receiving module is an input terminal RX of the ISP chip, and the transmitting module is an output terminal TX of the ISP chip.
When the switch module 201 is in the second state, the switch module 201 transmits the image signal to the receiving module 202, and after the image signal is processed by the image processing module 203, the sending module 204 transmits the processed image signal to the output terminal.
Optionally, the output terminal 22 transmits the image signal acquired by the switch module 201 in the two states to a platform outside the image signal processing device 200.
At this time, the image signal acquired from the outside needs to flow through the image processing module 203 for processing, and the processing operation on the image signal is realized through the serial path formed by the receiving module 202, the image processing module 203 and the transmitting module 204.
Optionally, the input end 21 and the output end 22 of the image processing device are interfaces capable of transmitting image signals, such as a Mobile Industry Processor Interface (MIPI for short).
With the image signal processing device shown in fig. 2, by controlling the state of the switch module, when the image signal obtained from the outside is not required to be processed, the image signal is directly transmitted to the external platform via the input terminal 21 and the output terminal 22, so that the image signal is not required to pass through the input terminal (i.e., the receiving module 202 shown in fig. 2) and the output terminal (i.e., the receiving module 204 shown in fig. 2) of the ISP, power consumption and heat generation of the input terminal and the output terminal of the ISP due to transmission of the image signal are avoided, and power consumption of the image processing device is further reduced.
In an embodiment, referring to fig. 3, fig. 3 provides a schematic structural diagram of a second image signal processing device, wherein the switch module 201 may include:
a first switch 31, where the first switch 31 has a first terminal 311, a second terminal 312, and a third terminal 313, the first terminal 311 of the first switch is conducted with the second terminal 312 of the first switch or the third terminal 313 of the first switch, the first terminal 311 of the first switch is connected to the input terminal 21, and the second terminal 312 of the first switch is connected to the receiving module 202;
the second switch 32 has a first end 321, a second end 322, and a third end 323, the first end 321 of the second switch is electrically connected to the second end 322 of the second switch or the third end 323 of the second switch, the third end 323 of the second switch is connected to the third end 313 of the first switch, the second end 322 of the second switch is connected to the transmitting module 204, and the first end 321 of the second switch is connected to the output end 22.
Optionally, when the switch module 201 is in the first state, the first terminal 311 of the first switch is conducted with the third terminal 313 of the first switch, and the first terminal 321 of the second switch is conducted with the third terminal 323 of the second switch;
when the switch module 202 is in the second state, the first terminal 311 of the first switch is conducted with the second terminal 312 of the first switch, and the first terminal 321 of the second switch is conducted with the second terminal 322 of the second switch.
In the above embodiment, the switch module 201 is switched between the first state and the second state by two selection switches, namely, the first switch 31 and the second switch 32. The first switch 31 and the second switch 32 may be MIPI switches (switches). The MIPI switch is used as a switch capable of switching data, extremely small power consumption is needed only during switching, and basically no power is consumed after switching, so that the MIPI switch is integrated in an ISP chip, and when an image processing function is not needed, the input end 21 is directly connected to the output end 22 through the MIPI switch, and the lowest power consumption is realized; when the image processing function is needed, an image signal is connected to the receiving module 202 of the ISP chip through the input end 21 by the MIPI switch, and the transmitting module 204 of the ISP chip is connected to the receiving circuit of the platform, so that the image processing function is realized.
In an embodiment, referring to fig. 4, fig. 4 provides a schematic structural diagram of a third image signal processing device, wherein the sending module 204 is connected to the output end 22, and the switching module may include:
a third switch 41, having a first terminal 411, a second terminal 412 and a third terminal 413, the first terminal 411 of the third switch being conductive to the second terminal 412 of the third switch or to the third terminal 413 of the third switch, the first terminal 411 of the third switch being connected to the input terminal 21, the second terminal 412 of the third switch being connected to the receiving module 202, the third terminal 413 of the third switch being connected to the output terminal 22;
when the switch module is in the first state, the first end 411 of the third switch is conducted with the third end 413 of the third switch;
when the switch module is in the second state, the first end 411 of the third switch and the second end 412 of the third switch are conducted.
In this embodiment, the switch module is switched between the first state and the second state by a multi-way selection switch (i.e., a three-way selection switch, i.e., the third switch 41 in fig. 4) to control the flow direction of the image signal in the image signal processing device.
In an embodiment, referring to fig. 5, fig. 5 provides a schematic structural diagram of a fourth image signal processing device, wherein the sending module 204 is connected to the output end 22, and the switching module may include:
a fourth switch 51, said fourth switch 51 having a first end 511 and a second end 512, said first end 511 of said fourth switch being connected to said input terminal 21, said second end 512 of said fourth switch being connected to said output terminal 22;
a fifth switch 52, wherein the fifth switch 52 has a first end 521 and a second end 522, the first end 521 of the fifth switch is connected to the input terminal 21, and the second end 522 of the fifth switch is connected to the receiving module 202;
when the switch module is in the first state, the first terminal 511 of the fourth switch is connected to the second terminal 512 of the fourth switch, and the first terminal 521 of the fifth switch is disconnected from the second terminal 522 of the fifth switch;
when the switch module is in the second state, the first terminal 511 of the fourth switch is disconnected from the second terminal 512 of the fourth switch, and the first terminal 521 of the fifth switch is connected to the second terminal 522 of the fifth switch.
In this embodiment, the switch module is switched between the first state and the second state by two one-way switches (i.e., the fourth switch 51 and the fifth switch 52 in fig. 4) to control the flow direction of the image signal in the image signal processing device.
Optionally, the image signal is obtained from an image sensor, for example, an image sensor in a camera module of a terminal, such as a mobile phone or a computer.
Optionally, the image signal processing device is a semiconductor chip, for example, an ISP chip, and at this time, a switch module is added to the ISP chip to control a flow direction of an externally obtained image signal in the ISP chip.
An embodiment of the present invention further provides a terminal, where the terminal includes an image sensor and the image signal processing device shown in any one of fig. 2 to 5, and the image sensor is configured to output the image signal.
The terminal may include a memory having stored thereon computer instructions executable on the processor, and a processor controlling the image signal processing device when executing the computer instructions. The terminal includes, but is not limited to, a mobile phone, a computer, a tablet computer, and the like.
The image signal output by the image sensor is acquired by an input terminal of the image signal processing device.
Optionally, the terminal further includes a controller, and the controller is configured to control a state of the switch module.
Optionally, if the image sensor is in the preview mode, the switch module in the image signal processing device is in the first state.
Optionally, if the image sensor is in a shooting mode, the switch module in the image signal processing chip is in a second state.
For terminals with image sensors such as cameras of mobile phones, tablet computers and the like, when the image sensors do not acquire images and only adopt a preview mode, a controller of the terminal controls a switch module to be in a first state, and image signals are directly sent to a platform end without being processed by an image processing module. When the image sensor needs to collect images, namely the image sensor is in a shooting mode, the controller of the terminal controls the switch module to be in the second state, and the image signals are processed by the image processing module and then sent to the platform end.
It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this document indicates that the former and latter related objects are in an "or" relationship.
The "plurality" appearing in the embodiments of the present application means two or more.
The descriptions of the first, second, etc. appearing in the embodiments of the present application are only for illustrating and differentiating the objects, and do not represent the order or the particular limitation of the number of the devices in the embodiments of the present application, and do not constitute any limitation to the embodiments of the present application.
The term "connect" in the embodiments of the present application refers to various connection manners, such as direct connection or indirect connection, to implement communication between devices, which is not limited in this embodiment of the present application.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (11)
1. An image signal processing device having an input terminal for receiving an external image signal and an output terminal for outputting a signal to the outside, the image signal processing device comprising a switching module, a receiving module, an image processing module, and a transmitting module;
one end of the switch module is connected with the input end, and the other end of the switch module is connected with the output end;
the receiving module, the image processing module and the sending module form a serial connection path;
the switch module has at least a first state and a second state, wherein,
when the switch module is in a first state, the image signal is transmitted from the input end to the output end through the switch module, and the receiving module, the image processing module and the sending module are bypassed;
when the switch module is in a second state, the switch module transmits the image signal to the receiving module, and after the image signal is processed by the image processing module, the sending module transmits the processed image signal to the output end.
2. The image signal processing device according to claim 1, wherein the switching module includes:
the first switch is provided with a first end, a second end and a third end, the first end of the first switch is conducted with the second end of the first switch or the third end of the first switch, the first end of the first switch is connected with the input end, and the second end of the first switch is connected with the receiving module;
the first switch is connected with the second end of the second switch or the third end of the second switch, the third end of the second switch is connected with the third end of the first switch, the second end of the second switch is connected with the sending module, and the first end of the second switch is connected with the output end.
3. The device according to claim 2, wherein when the switch module is in the first state, the first terminal of the first switch is conducted with the third terminal of the first switch, and the first terminal of the second switch is conducted with the third terminal of the second switch;
when the switch module is in the second state, the first end of the first switch is conducted with the second end of the first switch, and the first end of the second switch is conducted with the second end of the second switch.
4. The image signal processing device according to claim 1, wherein the transmission module is connected to the output terminal, and the switching module includes:
a third switch having a first end, a second end, and a third end, the first end of the third switch being connected to the second end of the third switch or the third end of the third switch, the first end of the third switch being connected to the input terminal, the second end of the third switch being connected to the receiving module, the third end of the third switch being connected to the output terminal;
when the switch module is in a first state, the first end of the third switch is conducted with the third end of the third switch;
when the switch module is in the second state, the first end of the third switch is conducted with the second end of the third switch.
5. The image signal processing device according to claim 1, wherein the transmission module is connected to the output terminal, and the switching module includes:
a fourth switch having a first terminal and a second terminal, the first terminal of the fourth switch being connected to the input terminal, the second terminal of the fourth switch being connected to the output terminal;
a fifth switch having a first end and a second end, the first end of the fifth switch being connected to the input terminal, the second end of the fifth switch being connected to the receiving module;
when the switch module is in a first state, the first end of the fourth switch is connected with the second end of the fourth switch, and the first end of the fifth switch is disconnected with the second end of the fifth switch;
when the switch module is in the second state, the first end of the fourth switch is disconnected with the second end of the fourth switch, and the first end of the fifth switch is connected with the second end of the fifth switch.
6. The image signal processing device according to claim 1, wherein the image signal is acquired from an image sensor.
7. The image signal processing device according to claim 1, wherein the image signal processing device is a semiconductor chip.
8. A terminal characterized by comprising an image sensor for outputting the image signal and the image signal processing device of any one of claims 1 to 7.
9. The terminal of claim 8, further comprising a controller for controlling the state of the switch module.
10. The terminal of claim 8, wherein if the image sensor is in a preview mode, the switch module in the image signal processing device is in a first state.
11. The terminal of claim 8, wherein the switch module in the image signal processing chip is in the second state if the image sensor is in the capture mode.
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