JP3658197B2 - Information processing apparatus, display control apparatus, display control method, and storage medium - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an information processing apparatus, a display control apparatus, a display control method, and a storage medium that control switching control and image data transfer of interconnected serial buses.
[0002]
[Prior art]
Conventionally, as a technique in this type of field, there has been one as shown in FIG.
[0003]
FIG. 8 is a block diagram showing a configuration of a conventional display device.
[0004]
The display device 112 includes a hub 12, an MPU 13, a display unit 14, a switch 111, and a ROM 113.
[0005]
The hub 12 transmits data from a PC (personal computer) 11 to a digital camera 17, a scanner 18, a printer 19, and an MPU 13 connected to the hub 12. Data from the digital camera 17, scanner 18, printer 19, and MPU 13 connected to the hub 12 is transmitted to the PC 11.
[0006]
The digital camera 17 receives shooting and image number designation commands, designation commands such as image data, or data from the PC 11 via the hub 12, and receives data such as image data and photographing conditions via the hub 12. Send to PC11. The scanner 18 receives scan resolution, position, range, command, and the like from the PC 11 via the hub 12, and transmits image data to the PC 11 via the hub 12.
[0007]
The printer 19 receives a control command and print data from the PC 11 via the hub 12, performs printing, and transmits a printer status to the PC 11 via the hub 12.
[0008]
The MPU 13 receives various setting values of the display unit 14 from the PC 11 via the hub 12 and transmits a monitor status to the PC 11 via the hub 12. Various setting values from the switch 111 can be input, and the display unit 14 is set using the various setting values received.
[0009]
The display unit 14 performs various adjustments from the MPU 13 and receives and displays image data from the PC 11.
[0010]
[Problems to be solved by the invention]
However, in the conventional display device, when the display device is not connected to a computer or when the computer is not turned on, operations such as display and printing of image data cannot be performed.
[0011]
In view of the above-described conventional problems, the present invention provides an information processing apparatus, a display control apparatus, a display control method, and an information processing apparatus that enable operations such as display and printing even when the computer is not connected or the computer is not turned on. An object is to provide a storage medium.
[0012]
[Means for Solving the Problems]
To achieve the above object, in an information processing apparatus according to the first aspect of the present invention, the upstream bus means for upstream and serial connection, and distribution means for distributing to a plurality of downstream serial connection to the downstream bus means, said upstream When power is supplied from the bus means, data from the upstream is transmitted to the downstream bus means. When power is not supplied from the upstream bus means, the data is connected to an image input / output device connected to the downstream bus means. And control means for transmitting and receiving the image data.
[0013]
In an information processing apparatus according to a second aspect of the present invention, in the first aspect of the present invention, the control means receives a control program for controlling the image input / output device from an external device, and the control program receives the control program according to the received control program. The present invention is characterized in that image data is exchanged with an image input / output device.
[0015]
In the information processing apparatus according to the third aspect of the present invention is the invention of the claim 2 Symbol mounting, said control means includes a memory for storing the control program, detecting means for detecting the presence or absence of a control program in said memory And when the control program is not stored in the memory, the image data is exchanged with the image input / output device by the control program received from the external device. .
[0016]
According to a fourth aspect of the present invention, in the information processing apparatus according to the first aspect, the control means receives a control program for controlling the image input / output device from the image input / output device, and receives the received control. The present invention is characterized in that image data is exchanged with the image input / output device by a program.
[0017]
In the display control device according to the fifth aspect of the present invention, one upstream and the upstream bus means for serially connected one-to-one, and distribution means for distributing to the downstream bus means for serial connection to a plurality of downstream one-to-one, When there is energization from the upstream bus means, data from the upstream is transmitted to the downstream bus means, and when there is no energization from the upstream bus means, an image input / output device connected to the downstream bus means And control means for connecting and receiving the image data and displaying on the display.
[0018]
According to a sixth aspect of the present invention, in the display control device according to the fifth aspect , the control means receives a control program for controlling the image input / output device from an external device, and receives the control program from the external device. The present invention is characterized in that image data is exchanged with the image input / output device by a program.
[0020]
A display control apparatus according to the invention of claim 7, wherein, in the invention described in claim 6, further comprising a memory for storing the control program, and a detection means for detecting the presence or absence of a control program in said memory, said control The means is characterized in that when no control program is stored in the memory, image data is exchanged with the image input / output device by the control program received from the external device.
[0021]
According to an eighth aspect of the present invention, in the display control apparatus according to the fifth aspect , the control means receives a control program for controlling the image input / output device from the image input / output device, and receives the received control. The present invention is characterized in that image data is exchanged with the image input / output device by a program.
[0022]
In the display control method according to the ninth aspect of the invention, there is provided a means for distributing the upstream bus means serially connected one-to-one with one upstream to a plurality of downstream bus means serially connected one-to-one. When there is energization from the upstream bus means, the data from the upstream is transmitted to the downstream bus means, and when there is no energization from the upstream bus means, the image input / output connected to the downstream bus means It is characterized in that it is connected to a device to exchange image data and display it on a display.
[0027]
The storage medium according to the invention of claim 10 has means for distributing upstream bus means serially connected one-to-one with one upstream to a plurality of downstream and downstream bus means serially connected one-to-one. A storage medium storing a computer-readable program for executing a display control method for displaying the image data on a display connected to an image input / output device connected to the downstream bus means, the storage medium storing the computer When there is an energization from the upstream bus means, the data from the upstream is transmitted to the downstream bus means, and when there is no energization from the upstream bus means, it is connected to the downstream bus means. Connecting to the image input / output device and transferring the image data; and displaying the image data on a display. And it features.
[0032]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0033]
(First embodiment)
FIG. 1 is a block diagram showing an overall configuration of a display apparatus including a display control apparatus according to the first embodiment of the present invention. Elements common to those in FIG. 8 are given the same reference numerals.
[0034]
The display device 112 includes a hub 12, a display unit 14, a switch 111, and a ROM 113 as in the prior art, as well as an MPU 13A, an image changeover switch 15, a bus changeover switch 16, and an image memory 110 that characterize the present embodiment. It has.
[0035]
The MPU 13A operates by receiving various programs supplied from the ROM 113. Further, the MPU 13A monitors the data signal S11 from the PC 11, and when the power of the PC 11 is turned on, the energized state of the PC 11 is detected by the data signal S11.
[0036]
When the MPU 13A detects the energization state of the data signal S11 from the PC 11, the bus changeover switch 16 is set to a state where the PC 11 and the hub 12 are connected, and the display unit 14 displays the image signal S12 from the PC 11. The image changeover switch 15 is set.
[0037]
When such setting is performed, the hub 12 transmits the data of the PC 11 from the bus changeover switch 16 to the digital camera 17, the scanner 18, the printer 19, and the MPU 13A connected to the hub 12 as necessary.
[0038]
In addition, data from the digital camera 17, the scanner 18, the printer 19, and the MPU 13 </ b> A connected to the hub 12 to the PC 11 is transmitted to the bus switch 16.
[0039]
The digital camera 17 receives a shooting and image number designation command, a designation command such as image data, or data from the PC 11 via the hub 12, and receives data such as image data and data such as shooting conditions via the hub 12. Send to. The scanner 18 receives scan resolution, position, range, command, and the like from the PC 11 via the hub 12 and transmits image data to the PC 11 via the hub 12. The printer 19 receives control commands and print data from the PC 11 via the hub 12, performs printing, and transmits the printer status to the PC 11 via the hub 12.
[0040]
The MPU 13 </ b> A receives various setting values of the display unit 14 from the PC 11 via the hub 12 and transmits a monitor status to the PC 11 via the hub 12. Various setting values from the switch 111 can also be input, and the display unit 14 is set using the various setting values received.
[0041]
The display unit 14 performs various adjustments from the MPU 13A, receives the image data from the image changeover switch 15, and displays it.
[0042]
When the PC 11 is not turned on, it is detected by monitoring the data signal S11 by the MPU 13A that the data signal S11 from the PC 11 is not energized. When the MPU 13 A detects that the data signal S11 from the PC 11 is not energized, the bus selector switch 16 is set to a state in which the MPU 13A and the hub 12 are connected, and the display unit 14 displays an image from the image memory 110. Then, the image changeover switch 15 is set.
[0043]
When such setting is performed, the hub 12 transmits the data of the MPU 13A from the bus changeover switch 16 to the digital camera 17, the scanner 18, the printer 19, and the MPU 13A connected to the hub 12 as necessary. In addition, data from the digital camera 17, the scanner 18, the printer 19, and the MPU 13 </ b> A connected to the hub 12 to the MPU 13 </ b> A is transmitted to the bus switch 16.
[0044]
The digital camera 17 receives a shooting and image number designation command, a designation command such as image data, or data from the MPU 13A via the hub 12 and receives data such as image data and photographing conditions via the hub 12 to the MPU 13A. Send to. The MPU 13A stores the received image data in the image memory 110, and then sends it to the image changeover switch 15.
[0045]
The scanner 18 receives the scan resolution, position, range, command, and the like from the MPU 13 </ b> A via the hub 12, and transmits image data to the MPU 13 </ b> A via the hub 12. The MPU 13A stores the received image data in the image memory 110, and sends the image data to the image changeover switch 15.
[0046]
The printer 19 receives the control command and the image data in the image memory 110 from the MPU 13A via the hub 12, performs printing, and transmits the printer status to the MPU 13A via the hub 12. The MPU 13A receives various setting values of the display unit 14 from the MPU 13A via the hub 12 and transmits the monitor status to the MPU 13A via the hub 12. Various setting values from the switch 111 can be input, and the display unit 14 is set using the various setting values received.
[0047]
The display unit 14 performs various adjustments from the MPU 13A, receives the image data from the image changeover switch 15, and displays it.
[0048]
When the MPU 13A detects that the PC 11 is turned on during the operation when the PC 11 is not turned on, the MPU 13A interrupts all processing and immediately switches to the operation when the PC 11 is turned on.
[0049]
FIG. 2 is a block diagram showing the configuration of the PC 11.
[0050]
The PC 11 is controlled by a CPU 21 that is a control processing device. The CPU 21 exchanges data and programs from each peripheral device through the system bus S21.
[0051]
First, the CPU 21 is supplied with a basic program from the ROM 24, transfers a predetermined program from the external storage device 28 to the RAM 23, and executes a desired operation by executing the program.
[0052]
The operator gives instructions to the PC 11 using the keyboard 26 that is a key input device and the pointing device 27 that is a coordinate input device. As information for the operator, the CPU 21 writes data into the VRAM 25 according to a program, and the image signal S12 output from the VRAM 25 is displayed on the display unit 14 of the display device 112.
[0053]
In addition, various adjustments of the display unit 14 and data exchange with the digital camera 17, the scanner 18, and the printer 19 are performed through the one-to-one interface 22 according to a program instruction as described above.
[0054]
FIG. 3 is a block diagram showing a configuration of a data signal from the PC 11.
[0055]
In the figure, a power signal S31 is a power supply signal to a device connected downstream, and by detecting the voltage of the signal, the MPU 14 detects the presence or absence of an energized state. The positive data signal S32 and the negative data signal S33 are data signals having different polarities, and the reliability of data is improved by using the signals in a twisted pair. The ground signal S34 is a signal indicating the ground.
[0056]
FIG. 4 is a schematic diagram of a data transfer frame of a data signal transmitted from the PC 11.
[0057]
In the figure, the structure of the frame is composed of an SOF 41 indicating the start of the frame and a data packet. The data packet includes a data packet (1) 42, a data packet (2) 4 6 , a data packet (3) 4 7 and a plurality of data packets. Consists of data. The frame is from SOF 41 until the next SOF 48 is started, and is time-divided every 1 ms.
[0058]
The data packet (2) 46 includes a token 43, data 44, and a handshake 45, and the other data packet (1) 42 and data packet (3) 47 have the same configuration. The token 43 includes a packet ID indicating a data direction and a packet type, an address indicating a transfer destination number, an END point indicating a packet size, and a CRC. Further, the data 44 is composed of the number of bytes indicated by the END point in the main body of the data to be transferred, and the handshake 45 returns a data transaction in a successful data reception, flow control or stopped state.
[0059]
As described above, according to the present embodiment, the computer can be operated as long as the computer is connected and the computer is turned on, and even when the computer is not connected or the computer is not turned on. Operations such as display and printing become possible.
[0060]
(Second Embodiment)
Although the control program is stored in the ROM 113 in the first embodiment, an example in which the control program is not stored in the ROM 113 will be described in the present embodiment.
[0061]
FIG. 5 is a block diagram showing an overall configuration of a display apparatus including a display control apparatus according to the second embodiment of the present invention, and the same reference numerals are given to elements common to FIG.
[0062]
In this embodiment, an NVRAM 51 for storing a program is added to the system configuration diagram of FIG.
[0063]
When transferring the program, first, the PC 11 is turned on. The PC 11 reads the program from the external storage device 28 and transfers it to the MPU 13A via the one-to-one interface 22 via the bus changeover switch 16 and the hub 12.
[0064]
The MPU 13A stores the received program in the NVRAM 51 that can be retained even when the power is turned off. When it is detected that the PC 11 is turned on, the MPU 13A performs the same operation as in the first embodiment.
[0065]
When necessary information is transmitted to the digital camera 17, the scanner 18, the printer 19, and the MPU 13 </ b> A connected to the hub 12 when the PC 11 is not turned on, when the ROM 113 does not store a program, Transmission is performed using the program of the NVRAM 51.
[0066]
(Third embodiment)
In the second embodiment, the program is transferred from the PC 11 when the program is not stored in the ROM 113. However, in the second embodiment, the program is transferred from a device connected to the hub 12. explain.
[0067]
FIG. 6 is a block diagram showing the overall configuration of a display apparatus including a display control apparatus according to the third embodiment of the present invention, and the same reference numerals are given to elements common to FIG.
[0068]
In the figure, the NVRAM 51 shown in FIG. Except for the program transfer method, the same operation as in the second embodiment is performed.
[0069]
The MPU 13A transfers the control program from the device according to a predetermined procedure that does not depend on the device when a request for the device to which information is to be transferred among the devices connected to the hub 12 is generated for the first time. receive.
[0070]
The MPU 13A stores the transferred program in the RAM 61, exchanges information with a device connected to the hub 12 using the program, and controls predetermined image data and printing.
[0071]
FIG. 7 is a block diagram showing the configuration of the digital camera 17 .
[0072]
This digital camera 17 has an MPU 78. The MPU 78 transmits / receives data via the MPU bus S73, and transmits / receives data to / from the hub 12 via the data line S72.
[0073]
When a request packet from the MPU 13A of the display device 112 to the MPU 78 via the hub 12 arrives at the one-to-one interface 79, the MPU 78 reads the requested program from the ROM 77 and passes through the one-to-one interface 79 and the hub 12. To MPU13A.
[0074]
When the MPU 13 </ b> A makes a shooting and image data request to the NVRAM 76 by the sent program, the MPU 78 receives the request from the one-to-one interface 79. The A-D converter 72 converts the image of the CCD 71 from analog to digital, and the Y-U format data is stored as data for one screen in the frame memory 73 via S71. Further, the RGB conversion unit 74 converts the read data of the frame memory 73 into the RGB format, and the compression device 75 performs JPEG compression and stores it in the NVRAM 76.
[0075]
When the MPU 13A makes a transfer request for the stored image data, the MPU 78 receives the request through the one-to-one interface 79, reads the image data from the NVRAM 76, and sends the image to the MPU 13A via the one-to-one interface 79 and the hub 12. Transfer data.
[0076]
The present invention is not limited to the apparatus according to the above-described embodiment, and may be applied to a system including a plurality of devices or an apparatus including a single device. The storage medium storing the program code of the software that realizes the functions of the embodiments described above is also supplied to the system or apparatus, and the system or apparatus is also a program stored in the storage medium by the computer (or CPU or MPU). Needless to say, it is also completed by reading and executing the code.
[0077]
In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiments, and the storage medium storing the program code constitutes the present invention. As a storage medium for supplying the program code, for example, a floppy disk, a hard disk, an optical disk, a magneto-optical disk, a CD-ROM, a CD-R, a magnetic tape, a nonvolatile memory card, and a ROM can be used. In addition, by executing the program code read by the computer, not only the functions of the above-described embodiments are realized, but also the OS running on the computer based on the instruction of the program code performs the actual processing. Needless to say, a case where the function of the above-described embodiment is realized by performing part or all of the processing is also included.
[0078]
Furthermore, after the program code read from the storage medium is written to the memory provided in the function expansion board inserted into the computer or the function expansion unit connected to the computer, the next program code is expanded based on the instructions. It is also included that the function of the above-described embodiment is realized by performing a part or all of the actual processing by performing the actual processing by a CPU or the like provided with a function expansion board or function in the expansion unit. Needless to say.
[0079]
【The invention's effect】
As described above in detail, according to the information processing apparatus, the display control apparatus, the display control method, and the storage medium of the present invention, for example, when a computer is connected and the computer is turned on, the operation is performed as usual. It is possible to display and print even when the computer is not connected or when the computer is not turned on.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an overall configuration of a display device including a display control device according to a first embodiment of the present invention.
FIG. 2 is a block diagram showing a configuration of a PC 11;
FIG. 3 is a block diagram showing a configuration of a data signal from PC 11;
FIG. 4 is a schematic diagram of a data transfer frame of a data signal transmitted from the PC 11;
FIG. 5 is a block diagram showing an overall configuration of a display device including a display control device according to a second embodiment of the present invention.
FIG. 6 is a block diagram showing an overall configuration of a display device including a display control device according to a third embodiment of the present invention.
7 is a block diagram showing a configuration of the digital camera 17. FIG.
FIG. 8 is a block diagram illustrating a configuration of a conventional display device.
[Explanation of symbols]
11 PC
12 Hub 13A MPU
14 Display 15 Image change switch 16 Bus change switch
17 Digital Camera 18 Scanner 19 Printer 51 NVRAM
61 RAM
110 Image memory 111 Switch 112 Display device 113 ROM

Claims (10)

The upstream bus means for upstream and serial connection, and distribution means for distributing to a plurality of downstream and downstream bus means for serial connection,
When there is energization from the upstream bus means, data from the upstream is transmitted to the downstream bus means, and when there is no energization from the upstream bus means, an image input / output device connected to the downstream bus means An information processing apparatus comprising control means for connecting and transferring image data. The control means is configured to receive a control program for controlling the image input / output device from an external device, and to exchange image data with the image input / output device by the received control program. The information processing apparatus according to claim 1. A memory for storing the control program; and a detecting means for detecting the presence or absence of the control program in the memory;
When the control program is not stored in the memory , the control means is configured to exchange image data with the image input / output device by a control program received from the external device. claim 2 Symbol placement of the information processing apparatus. The control means is configured to receive a control program for controlling the image input / output device from the image input / output device, and to exchange image data with the image input / output device by the received control program. The information processing apparatus according to claim 1. The upstream bus means for serially connected to one upstream and one-to-one, and distribution means for distributing to a plurality of downstream and downstream bus means for serially connected in a one-to-one,
When there is energization from the upstream bus means, data from the upstream is transmitted to the downstream bus means, and when there is no energization from the upstream bus means, an image input / output device connected to the downstream bus means A display control apparatus comprising: a control means for connecting and transferring image data and displaying on the display. The control means is configured to receive a control program for controlling the image input / output device from an external device, and to exchange image data with the image input / output device by the control program received from the external device. 6. The display control apparatus according to claim 5, wherein A memory for storing the control program; and a detecting means for detecting the presence or absence of the control program in the memory;
When the control program is not stored in the memory , the control means is configured to exchange image data with the image input / output device by a control program received from the external device. The display control apparatus according to claim 6 . The control means is configured to receive a control program for controlling the image input / output device from the image input / output device, and to exchange image data with the image input / output device by the received control program. 6. The display control apparatus according to claim 5, wherein   When there is a means for distributing the upstream bus means serially connected to one upstream to the downstream bus means serially connected to a plurality of downstream one-to-one, and when there is energization from the upstream bus means The data from the upstream is transmitted to the downstream bus means, and when there is no energization from the upstream bus means, it is connected to the image input / output device connected to the downstream bus means to exchange the image data, A display control method characterized by displaying on a display. An image input / output device having means for distributing upstream bus means serially connected one-to-one with one upstream to a plurality of downstream bus means serially connected one-to-one and connected to the downstream bus means A storage medium storing a computer-readable program for executing a display control method for displaying the image data on a display connected to the computer,
Detecting energization from the upstream bus means;
When there is energization from the upstream bus means, data from the upstream is transmitted to the downstream bus means, and when there is no energization from the upstream bus means, it is connected to an image input / output device connected to the downstream bus means. Step of transferring the image data,
And a step of displaying the image data on a display.

Images