JP2000244836A - Display controller, display control method, bus system and storage medium - Google Patents

Display controller, display control method, bus system and storage medium

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Publication number
JP2000244836A
JP2000244836A JP11044856A JP4485699A JP2000244836A JP 2000244836 A JP2000244836 A JP 2000244836A JP 11044856 A JP11044856 A JP 11044856A JP 4485699 A JP4485699 A JP 4485699A JP 2000244836 A JP2000244836 A JP 2000244836A
Authority
JP
Japan
Prior art keywords
display control
control device
display
image
connection status
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP11044856A
Other languages
Japanese (ja)
Inventor
Shuntaro Araya
Katsuhiro Miyamoto
Kazumi Suga
勝弘 宮本
俊太郎 荒谷
和巳 須賀
Original Assignee
Canon Inc
キヤノン株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc, キヤノン株式会社 filed Critical Canon Inc
Priority to JP11044856A priority Critical patent/JP2000244836A/en
Publication of JP2000244836A publication Critical patent/JP2000244836A/en
Pending legal-status Critical Current

Links

Abstract

(57) [Summary] [PROBLEMS] In a bus system in which various devices are connected by a serial bus, a connection relationship is displayed in a format so that the connection relationship between a currently viewed display device and another device can be easily understood. It can be so. SOLUTION: In a home bus system in which various devices (including a television) are connected by an IEEE serial bus, for example, a television currently being viewed by a user is arranged in a first stage and directly connected to the television. The user can arrange the device in the second row without discriminating the parent and child, and display the image in which the device directly connected to the device in the third row is also arranged in the next row without discriminating the parent and child in the third row and so on. Causes the television to display an image indicating the connection status of all devices on the serial bus as viewed from the television currently being viewed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an IEEE (the
Institute of Electrical
and Electronic Engineers
inc. The present invention relates to a bus system in which various devices are connected to a display control device such as a television receiver via a serial bus such as a 1394 serial bus, and more particularly to a control technique for displaying the connection status of devices.

[0002]

2. Description of the Related Art With the recent development of digital technology, the television broadcasting system is also shifting from an analog system to a digital system. For terrestrial digital broadcasting, different broadcasting systems are being developed in Japan, the United States, and Europe.

In the United States, terrestrial digital broadcasting ATV (Advanced TV) has been promoted since 1987, and the system standard was established in 1995 by the ATSC (Adva).
nounce Television Systems C
ommittee) to FCC (Federal Co.)
Communications and Communications, and was determined in 1996, excluding standards such as the number of effective scanning lines and the number of horizontal pixels. In Europe, DVB-T (Digital Video Broadcasting)
-Casting-Terrestrial) has been determined as a common European system.

[0004] The major difference between the two systems is the modulation system, and the US system has an 8-level VSB (Vestial Side).
This is a method in which a single carrier is used, the magnitude of the amplitude is divided into eight levels, and a signal is transmitted according to the magnitude of the amplitude. In addition, OFDM (Ort
hogonal frequency division
n Multiplexing) is a method in which several hundred orthogonal carriers are used, the signal transmission speed per wave is made smaller than that of a single carrier, and ghost interference resistance is improved. In both the United States and Europe, the target is fixed reception, and reception by mobiles is difficult.

[0005] On the other hand, in Japan, discussions are underway for standardization, but not only fixed reception but also a system that can be received by a mobile body is being studied. In particular, NHK (Japan Broadcasting Corporation), BST (Band Segmente)
(d Transmission) -OFDM is under study. This BST-
In the OFDM scheme, a plurality of types of modulation schemes can be designated in one band, so that a broadcasting station can provide a plurality of types of data transmission services such as a high-definition for fixed reception and an image data service for mobile reception. It becomes possible.

[0006] In addition, 12 GHz satellite digital broadcasting has already been started in the United States, Europe and Japan.

[0007] In the United States, since 1994 DirectTV
And the USSB have started the service, and the number of receivers spread has already reached 3 million or more. The satellite broadcasting system is 40
Although the transmission speed is Mbps (bit / sec), it is necessary to send information necessary for the receiver side to automatically correct a bit error occurring in the transmission path, so that content such as a TV program is sent. The effective transmission rate that can be used for is 24 Mbps.

In Europe, EUTELSAT has been around since 1996.
And ASTRA have started the service. These are DVB-S (Sat) standards established for satellite multi-channel broadcasting.
ellite) standard. This standard is MPE
G (Motion Picture Experts
Group 2), various bandwidths and bit rates are determined, and a multi-channel service is possible.

In Japan, since Perfe
cTV has begun service and adopts the same DVB-S broadcast system as in Europe, with an effective transmission rate of 29 Mbps. DirectTV, JskyB, etc. have also started services since 1998, and the total number of channels will exceed 300.

On the other hand, as one of high-speed serial bus systems for connecting various AV devices, computers, storage devices and the like to each other and realizing a system capable of transferring digital data such as large-capacity images and sounds at high speed. , I
EEE (the Institute of Elec)
tritical and Electronic Eng
ines inc. 1394-1995 has been standardized, and its extended specifications, IEEE 1394a, IEEE
E1394b is still under consideration (hereinafter simply referred to as I
EEE1394).

The IEEE 1394 serial bus is a serial interface using a 6-core cable consisting of two pairs of signal lines and a pair of power supply lines, or a 4-core cable consisting of only two pairs of signal lines. Of nodes can be connected and 1024 buses are supported, so that a total of 64K nodes can be connected. IEEE
The 1394 serial bus can be expanded by connecting a new serial device to a port provided by the node. Here, a node is a logical unit in a device corresponding to each IEEE 1394 serial bus, and is composed of one or more units that are functional subcomponents. As a connection method between the nodes, a daisy chain method and a node branch method can be mixed, and a connection with a relatively high degree of freedom is possible. When a certain node is added or deleted and a bus reset occurs, the system configuration is automatically re-recognized. This determines the bus manager (usually the root node) and resets the ID number of each node.

The re-recognition of the system configuration automatically performed after the bus reset will be described with reference to FIGS. FIG. 16 shows a procedure for determining whether each node is a root, a branch, or a leaf. First, when a bus reset occurs (step S16)
01), all nodes are regarded as leaves (step SS)
1602), the number of connection ports p of each node is confirmed (step S1603). And the number of connection ports p is “1”
Is determined (step S1604), and when the connection port number p is “1”, the node is determined to be a leaf (step SS1605). The child node determined to be leaf sends ParentNotify to the parent node. On the other hand, the parent node has Chi1d N
send back an authy and mark the port as Child. The child node that has returned the Child Notify marks Parent in the connection port with the parent node (step S1606).

When the number of connection ports p is not "1",
Check the number of undefined ports ndp (step SS160
7) It is determined whether or not the number of undefined ports ndp is “1” (step S1608). As a result, if the number of undefined ports ndp is “1”, the node is determined to be a branch (step S1609). Then, as in the case of the leaf, the Parent Notif between the parent and child nodes is used.
y, Child Notify is sent and sent to the parent node port and Parent to the child node port.
Is marked (step S1610). In FIG. 17, in a character string composed of numerals and Roman characters such as 2c and 2p, numerals indicate port numbers, and c is Chi1d, p
Indicates Parent.

If the number of undefined ports ndp is "0" (step SS1611), the node is determined as a root (step SS1612), and the number of undefined ports n
If dp is greater than "1", the process proceeds to step SS160.
7, the determination of the branch node is repeated again.

FIG. 18 shows a procedure for determining a Phy ID for the root, branch, and leaf determined as described above. First, each leaf node requests an ID from the root node (step SS180)
1). The root node determines whether ID requests have been made from a plurality of leaf nodes (step SS180).
2). As a result, when an ID is requested from a plurality of leaf nodes, the root node performs arbitration (step S1803), gives an ID number to one winning leaf node, and gives a failure result to the losing leaf node. Make a notification.

A leaf node that has failed to acquire an ID issues an ID request again and repeats the same operation. On the other hand, the leaf having succeeded in the ID acquisition broadcasts the Phy ID to all the nodes (step S1).
804). The above process is repeated until all leaf nodes have acquired IDs (step S1805).

Then, the processing performed on the leaf nodes is similarly performed on all the branch nodes (steps S1806 to S1810). Finally, the root node determines its own ID, and assigns the ID to all the nodes. (Step S1811).

After the IDs of the respective nodes are determined in this manner, all the nodes transmit self-ID packets, which are packet data in which the communication speed and port connection information supported by the nodes are recorded, on the bus (FIG. 6). The bus manager (root node) receives the self ID packets transmitted from all the nodes after the bus reset, builds and records a topology map indicating how each node is connected from the information, Based on this topology map, it is possible to recognize the connection state of each node and a defect. At this time, as shown in FIG. 19, the bus manager normally arranges the root node such that the root node is at the top, and the node having a smaller self ID is located below (the position of the leaves). Create This topology map can be displayed on a display device such as a television receiver, for example, when it is desired to know which node has a failure.

Further, as disclosed in Japanese Patent Application Laid-Open No. 9-154077, there is a system in which each node is arranged so that the flow of image data and audio data can be clearly understood and displayed on a display device, regardless of the physical connection state. It has been disclosed.

[0020]

However, in the conventional topology map, as described above, the root node is located at the top, and the nodes having the smaller self IDs are located below (the positions of the leaves). Since the display device is not based on the display device that the user is looking at, there is a problem that it is difficult to understand the connection relationship between the desired node such as a node in which a failure has occurred and the display device that is currently being viewed.

SUMMARY OF THE INVENTION The present invention has been made under such a background, and an object of the present invention is to provide a bus system in which various devices are connected by a serial bus in order to connect a currently viewed display device to another device. An object of the present invention is to display a connection relation in a format that allows the relation to be easily understood.

[0022]

In order to solve the above problems, a display control device according to the present invention is a bus system in which various devices including a display control device are connected by a serial bus, as viewed from the display control device. Control means is provided for displaying an image indicating the connection status of various devices on the home bus on a display screen on which the display control device performs display control.

Further, in the display control device according to the present invention, in a bus system in which various devices including the display control device are connected by a serial bus, the display control device and the display control device are directly connected to each of the display control devices. And control means for grouping devices other than the display control device and displaying an image indicating the connection status of various devices on the home bus on a display screen on which the display control device performs display control.

Further, the display control method according to the present invention shows the connection status of various devices on the home bus viewed from the display control device in a bus system in which various devices including the display control device are connected by a serial bus. A control step is provided for displaying an image on a display screen on which the display control device performs display control.

In a display control method according to the present invention, in a bus system in which various devices including a display control device are connected by a serial bus, the display control device and the display control device are directly connected to each display control device. And a control step of grouping devices other than the display control device and displaying an image indicating the connection status of various devices on the home bus on a display screen on which the display control device performs display control.

Also, in the bus system according to the present invention, in a bus system in which various devices including a display control device are connected by a serial bus, an image showing the connection status of various devices on the home bus viewed from the display control device. Is displayed on a display screen on which the display control device performs display control.

Further, in the bus system according to the present invention, in a bus system in which various devices including a display control device are connected by a serial bus, each display control device is directly connected to the display control device and the display control device. Control means for grouping devices other than the display control device and displaying an image indicating the connection status of various devices on the home bus on a display screen on which the display control device performs display control.

Further, the storage medium according to the present invention is a storage medium for storing a program executed by the display control device on a bus system in which various devices including a display control device are connected by a serial bus, The program is
A control routine for displaying an image showing the connection status of various devices on the home bus as viewed from the display control device on a display screen on which the display control device performs display control is included.

Further, the storage medium according to the present invention provides a group of devices other than the display control device directly connected to the display control device for each display control device by grouping the various devices on the home bus. Control means, a process, and a routine for displaying an image indicating the connection status on a display screen on which the display control device performs display control.

In the present invention, the control means, the process,
The routine arranges the display control device in the first stage, arranges devices directly connected to the display control device in the second stage without discriminating the parent and child, and similarly operates the devices of the stage in the third stage and thereafter. In this example, an image is displayed in which the devices directly connected to the device are arranged in the next row without distinction between the parent and the child.

In the present invention, the control means / step /
The routine sets the display control device at the top of the display screen,
Alternatively, the image arranged on the leftmost side or the rightmost side is displayed.

In the present invention, the serial bus is an IEEE (the Institute of E).
electrical and electronic
Engineers inc. ) A 1394 serial bus is used.

Further, in the present invention, a television receiver for receiving and reproducing radio waves related to digital television broadcasting is used as the display control device.

In the present invention, the control means / step /
The routine displays the connection status of various devices using the device type name.

In the present invention, the control means / step /
The routine is called AV / C (AudioVisual / Co).
control) Digital Interface
Unit info in Command Set
The type name of the device is acquired using an atus command or the like.

In the present invention, the control means / step /
In the routine, a portion indicating the display control device is displayed in a different color from a portion indicating another device.

Further, according to the present invention, the control means, the step,
In the routine, the group including the display control device is displayed in a different color from the other groups on the display screen on which the display control device is performing display control.

Further, according to the present invention, the control means, the step,
The routine divides the display area and displays an image indicating the connection status together with the currently displayed image.

Further, according to the present invention, the control means, the steps,
In the routine, the image indicating the connection status and the image currently being displayed are superimposed and displayed in a watermark state.

Further, according to the present invention, the control means, the step,
In the routine, the image indicating the connection status is switched from the currently displayed image and displayed.

[0041]

Embodiments of the present invention will be described below with reference to the drawings.

[First Embodiment] FIG. 1 is a block diagram showing a schematic configuration example of a television receiver to which the present invention is applied. This television receiver comprises a tuner 11, a decoder 12, and a graphic data generator. It has a unit 13, a serial bus controller 14, a display control unit 15, and a display unit 16, and the CPU 17 controls the operation of the entire receiver. At this time, the CPU 17 performs various controls based on the program stored in the ROM 19 while using the RAM 18 as a work area or the like. Although not shown, devices such as a video deck, a stereo, a video camera, a videophone, a personal computer, and a hard disk device are connected to the television receiver via a high-speed serial bus (IEEE1394 serial bus) B. ing. Various devices are further connected to these devices via the high-speed serial bus B.

<Tuner> PAT (Program A)
Sociation Table), PMT (Pro
When a composition channel to be received is indirectly specified by a “gram map table”, the PID of a packet transmitting a component constituting the program is determined.
Since the (ProgramID) number is obtained, the tuner 11 switches the transponder based on the PID, performs demodulation, error correction, and the like, and performs TS (Transport).
(Stream) to the decoder 12.

<Decoder> Next, the decoder 12 will be described with reference to the block diagram of FIG. Decoder 1
2, a buffer 21, a variable length decoding unit 22, an inverse quantization unit 23, an inverse DCT unit 24, a motion compensation prediction unit 25, a video memory 26, and a format conversion unit 2, as shown in FIG.
7.

Here, first, the coded data to be input,
That is, regarding the configuration of the MPEG bit stream,
This will be described with reference to FIGS. As shown in FIG. 3, an MPEG bit stream has a sequence header 3
01, a sequence extension 302, a first extension and a sequence layer composed of user data 803, and a GOP
(Group Of Picture) header 304,
A GOP layer composed of a first extension and user data 305, a picture layer composed of a picture header 306, a picture coding extension 307, a third extension and user data 308, and picture data 309; , A sequence header 311, slice information 313, a slice layer including macroblock data 314, macroblock information 315,
And a macroblock layer composed of block data.

(Sequence Layer) The sequence layer starts with a sequence header 301 and has a sequence extension 302 e.
MP with or without xtension start code
The bit streams of EG1 and MPEG2 are classified. In general, a sequence refers to an entire video program and ends with a sequence end code. In addition, the sequence layer basically includes one or more GOs.
P. The sequence header 801 includes
Encoded image size, aspect ratio, frame rate, bit rate, VBV (Video Buffering)
Verifier) Information such as a buffer size and a quantization matrix set in units of a sequence is included.

(GOP layer) The GOP layer includes a GOP header 8
Starting with 04, it is composed of one or more pictures.
The first encoded video in the GOP layer is an I picture that is encoded independently without using a reference screen. Therefore, I
By using an (Intra coded) picture, a GOP can be used as a point for performing random access from MPEG data. Note that applications such as communication require low delay characteristics, and thus the GOP layer can be omitted in MPEG2. In this case, for example, by using an intra slice to be intra-coded in slice units described later, by dividing the intra-coding of each slice into several screens,
It is possible to substitute the I picture and reduce the buffer occupancy of any screen on average.

(Picture Layer) The picture layer corresponds to each screen, and each picture layer is classified into one or more slice layers. In the picture header 306, encoding conditions for the screen are set. In picture coding extension 307,
A forward / backward and horizontal / vertical motion vector range is specified, and a frame structure and a field structure are set.
In addition, setting of DCT (discrete cosine transform) coefficient accuracy of an intra macro block and VLC (Variable Le
ngth code) type, linear, non-linear quantization scale, zigzag, alternate scanning, and the like.

(Slice Layer) The slice layer indicates a horizontally long band-like area in the screen. By forming the screen with a plurality of slice layers, even if an error occurs in one slice layer, the next slice layer is displayed. Error recovery is possible by synchronization from the start. The slice layer is composed of one or more macroblocks, and from left to right in raster scan order.
Lined up from the top, the length and start position are free and can be changed for each screen. However, in MPEG2, one slice layer does not extend to extend downward.

(Macro Block Layer) In the case of, for example, 4: 2: 0 format, the macro block layer includes six blocks of four luminance blocks and two chrominance blocks. In the macroblock data, the position of the macroblock and the encoding mode are set.

(Block Layer) The block layer is composed of 8 pixels × 8 lines of a luminance signal or a color difference signal.
T (discrete cosine transform) and IDCT (inverse discrete cosine transform) are performed in this unit. The block data is
It is composed of quantized DCT coefficients. For the DC component of the intra macroblock, the magnitude and difference information relating to the difference value from the adjacent block are given, and for the other DCT coefficients, 0 coefficients up to the non-zero quantized DCT coefficient Given the length and level of the EOB (End
ofBlock), the DCT coefficient of each block ends.

Next, the processing of each block of the decoder 12 shown in FIG. 2 will be described.

(Variable Length Decoding Unit) Variable Length Decoding Unit 22
Reads out the coded data buffered in the buffer 21 to decode the macroblock coding information, and outputs the coding mode, motion vector, quantization information, and quantization DCT.
Separate the coefficients. Note that the variable-length coding performed on the encoder side is performed by assigning a shorter code to data having a higher appearance frequency, and the variable-length decoding unit 22 performs the reverse decoding process.

(Inverse Quantization Unit) The inverse quantization unit 23 inversely quantizes the decoded 8 × 8 quantized DCT coefficients to restore them to DCT coefficients. In the quantization, the encoder compresses spatial information using a quantization table determined according to the visual characteristics of a person, and the inverse quantization performs the inverse process by inverse quantization. This is performed using a conversion table.

(Inverse DCT Unit) The inverse DCT unit 24 converts the above DCT coefficients into pixel space data. Although the DCT and the inverse DCT operation are defined as real number operations, the result of the inverse DCT operation does not always match the DCT input value and is not always an integer because quantization processing is performed between them. Therefore, when the value after the decimal point of the calculation result is 0.5, there is a case where the value is rounded up when converting to an integer and a case where the value is rounded down. Since this mismatch cannot be solved even if the operation precision is specified as high, as a countermeasure, by changing the coefficient value after the inverse quantization minutely, the value after the decimal point of the inverse DCT operation result without error becomes zero. .5 is reduced.

(Motion compensation prediction unit) Motion compensation prediction unit 25
Adds the block data subjected to motion compensation prediction to the output from the inverse DCT unit 24 in the case of the motion compensation prediction mode. However, this processing is not performed in the case of the intra-coding mode. Note that this coding mode is determined for each macroblock unit, the motion compensation prediction mode can be expected to have high coding efficiency when the temporal correlation is high, and the intra coding mode is time-dependent due to a large change in scene. Used when a strong correlation cannot be expected.

(Video Memory) The video memory 26 stores an I picture and a P (Pre) as reference pixels used in the decoding process.
save the coded picture).

(Format Conversion Unit) The format conversion unit 27 converts the I picture, P picture, B (Bidire) rearranged on the decoder side in order to increase the coding efficiency.
ctionally predicative codo
d) Rearrange the pictures in the original input order. Further, the image size is converted as needed.

<Serial Bus Controller> Next, FIG.
The serial bus controller 14 shown in FIG. The serial bus controller 14 is an IEEE 139
The connection information of all the devices (nodes) connected to the serial bus is obtained via a high-speed serial bus such as a 4-serial bus, and the connection information is displayed on the display unit 16 in a form easy for the operator to understand.

Here, the outline of the processing in the serial bus controller 14 will be described with reference to the flow chart of FIG. 5, taking the case of the IEEE 1394 serial bus as an example.

First, Self ID packets (see FIG. 6) of all nodes on the bus are read from the topology map created and stored by the node (root node) functioning as a bus manager, and Phy IDs of each node are read. Then, the connection state of each port of the node with another node is read (step S501). And, for example, AV / C
Digital Interface Command
The device information of each node, that is, the device type name (television, disk recorder, etc.) is acquired using the unit info status command or the like in d Set (step S502).

Next, the connection status display images of all the devices are displayed in the format described later in the graphic data generator 1 described later.
3 (step S503), and the display control unit 1
5 is displayed on the display unit 16 under the control of Step 5 (Step S50).
4).

Now, the format of the connection status display image of all devices, which is a feature of the present invention, will be described with reference to the conceptual diagrams of FIGS. 7 and 6 and the flowchart of FIG.

Conventionally, as shown in FIG. 19, for example, as the Phy.ID becomes larger, the Phy.ID becomes smaller (leaf node) node determined as a result of the self-identification after the bus reset. The connection status display image has a tree configuration in which the root node is located at the top and the root node is located at the top.

On the other hand, in the present invention, the serial bus controller 14 arranges the node of the television receiver currently being watched by the operator at the top, and sets all the nodes connected to the ports of the node. Node is 2
All the nodes connected to the ports of the second-stage nodes are arranged in the third stage without distinction between the parent and the child. All nodes connected to the port of the node in the corresponding stage are arranged in the next stage without discriminating between the parent and the child, for example, all the connected nodes are arranged in the fourth stage without discriminating between the parent and the child. (Steps S901 to S903, see FIG. 7).

Then, as shown in FIG. 8, the device name of each arranged node is used as a heading of each node, that is, the connection status can be displayed by the type name of the device (step S904, FIG. 8). reference),
Using the graphic data generation unit 13, a device connection status image in which the color of the node of the display device (television receiver) currently being viewed by the operator is different from the color of the node of the other device is generated. (Step S90
5).

As described above, the connection status images of all the device nodes on the bus centering on the television receiver currently being watched by the operator make it easier to understand.

It is to be noted that not only the television receiver currently being viewed by the operator is arranged at the top, but also
Needless to say, as shown in FIG. 10, it may be arranged at the leftmost (or right).

<Graphic Data Generator> The graphic data generator 13 includes a serial bus controller 14.
Generates image data based on the connection information of all device nodes on the bus, and outputs the image data to the serial bus controller 14.

<Display Control Unit> The display control unit 15 converts the image data of the television or the like output from the decoder 12 and the image data indicating the connection status of all devices on the bus output from the serial bus controller 14. The data is converted into data that can be displayed on the display unit 16.

However, as a method of displaying the two types of image data on the display unit 16, the screen may be divided into two parts in the horizontal direction as shown in FIG. As shown, the display of the device connection status on the bus may be displayed by alpha blending with a television image, or the two types of images may be completely switched and displayed.

<Display Unit> The display unit 16 is a thin and lightweight dot matrix display such as a CRT display, a liquid crystal display, or a plasma display, and displays image data of a television or the like output from the display control unit 15 and on a bus. Image data for displaying the connection status of all the devices or the composite image data as described above.

[Second Embodiment] In the second embodiment,
The configuration method of the connection status display images of all devices on the bus is different. In the first embodiment, the tree structure is configured around the television node currently being watched by the operator. However, in the second embodiment, each television device node is connected to each port. A node of a device other than the present television device and a node of the television device itself as one group,
Using the device name of each node as a heading of each node, and further displaying a device connection status display image in which the color of the group including the node of the television device currently being viewed by the operator is different from the colors of the other groups Constitute.

The second embodiment is the same as the first embodiment except for the method of composing the device connection status display image, and thus the description is omitted.

Hereinafter, the format of the connection status display image of all devices in the second embodiment will be described with reference to the conceptual diagrams of FIGS. 13 and 14, and the flowchart of FIG.

First, the basic concept of the second embodiment will be described. When a home bus system using an IEEE 1394 serial bus or the like is installed in a home and various AV devices in each living room are connected to the bus, one home system is usually used.
The number of televisions in one room is one, and it is assumed that a VCR and a storage device are connected to this. Therefore, by grouping each television on the bus together with the surrounding VCRs and storage devices, it is possible to display the connection status classified for each living room in the home.

Conventionally, as shown in FIG.
Based on the topology map defined by 1394, the node is located below the node (leaf node) of the Phy ID determined as a result of the self-identification after the bus reset, and is located upward as the Phy ID increases. Then, a connection status display image of all devices showing a tree configuration based on the root arranged such that the root node is at the top is created.

On the other hand, FIGS. 13 and 14 show examples of connection status display images of all devices according to the present invention. Here, FIG.
Numeral 5 is a device obtained by adding a device name to the conventional example of FIG. 19 based on the Phys ID and device information of each node, that is, displaying the connection status by the type name of the device. (Step S1501), FIG.
4 is a non-TV node (video or storage device) connected to each TV node shown here,
The television nodes themselves are grouped and displayed (S1502 to S1503).

Further, by changing the color of the group (corresponding to the living room in the home) including the television node currently being viewed by the operator (step S1504), the operator can easily grasp the connection status of all devices on the bus. I can do it.

The present invention is not limited to the above-described embodiment. For example, in the second embodiment, as in the first embodiment, the connection status image is displayed on a two-screen.
The image may be divided and displayed, or may be displayed in a watermark state by being superimposed on the currently displayed image, or may be displayed by switching from the currently displayed image.

The display device for displaying the device connection status may be a display device whose display contents are controlled by a personal computer. In this case, the display device for the personal computer is handled as being attached to the personal computer. That is, in displaying the connection status image on the display screen of the display device for a personal computer, the display device, and when showing the personal computer, without displaying the name of the display device,
The name of the personal computer is displayed, for example, as the personal computer 1.

[0082]

As described above, according to the present invention,
In a bus system in which various devices including a display control device are connected by a serial bus,
Devices that are directly connected to the display control device are placed in the second stage without distinction between the parent and child, and devices that are directly connected to the devices in the same stage are also placed in the third and subsequent stages. Such as disposing at the next stage without distinction, such as displaying an image showing the connection status of various devices on the home bus viewed from the display control device on a display screen on which the display control device is performing display control, or For each display control device, the display control device and devices other than the display control device directly connected to the display control device are grouped, and the display control device displays an image indicating the connection status of various devices on the home bus. A control means for displaying on the display screen that is performing control is provided, so that in a bus system in which various devices are connected by a serial bus, the connection relationship between the currently viewed display device and other devices can be easily determined. It is possible to display the connection relationship in a format that allows the solution, easily utilize more home bus system.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a schematic configuration of a television receiver to which the present invention has been applied.

FIG. 2 is a block diagram illustrating a configuration of a serial bus controller of FIG. 1;

FIG. 3 is a conceptual diagram illustrating bit stream data input to the decoder of FIG. 1;

FIG. 4 is a continuation of FIG. 3;

FIG. 5 is a flowchart illustrating an outline of a connection status image creation process according to the first and second embodiments of the present invention.

FIG. 6 is a conceptual diagram illustrating an IEEE-1394 Self-ID packet.

FIG. 7 is a conceptual diagram showing a connection status image (topology map) according to the first embodiment of the present invention.

FIG. 8 is a conceptual diagram showing a connection status image according to the first embodiment of the present invention.

FIG. 9 is a flowchart illustrating a connection status image creation process according to the first embodiment of the present invention.

FIG. 10 is a conceptual diagram showing another example of the connection status image according to the first embodiment of the present invention.

FIG. 11 is a diagram illustrating a first display example of a connection status display image according to the first embodiment of the present invention.

FIG. 12 is a diagram illustrating a second display example of a connection status display image according to the first embodiment of the present invention.

FIG. 13 is a conceptual diagram showing a case in which a device is displayed by a device type name with respect to the conventional example of FIG. 19 in the second embodiment of the present invention.

FIG. 14 is a conceptual diagram showing an example of a connection status image corresponding to FIG. 13 in the second embodiment of the present invention.

FIG. 15 is a flowchart illustrating a connection status image creation process according to the second embodiment of the present invention.

FIG. 16 is a flowchart showing parent-child relationship determination processing in IEEE 1394 self-identification processing.

FIG. 17 is a conceptual diagram illustrating a parent-child relationship of each node.

FIG. 18 is a flowchart showing ID processing in IEEE 1394 self-identification processing.

FIG. 19 is a conceptual diagram for describing a conventional connection status image example.

[Explanation of symbols]

11: tuner, 12: decoder, 13: graphic data generator, 14: serial bus controller, 1
5: display control unit, 16: display unit, 17: CPU, 18:
RAM, 19: ROM, B: serial bus.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Katsuhiro Miyamoto 3-30-2 Shimomaruko, Ota-ku, Tokyo F-term in Canon Inc. (reference) 5B077 AA03 NN02 5C025 CA02 CA09 DA01 DA08 DA10 5E501 AA02 AA20 AB06 BA03 CA03 CA04 EB05 FA23 5K032 DA01 EA07

Claims (52)

[Claims]
1. In a bus system in which various devices including a display control device are connected by a serial bus, the display control device displays an image showing a connection status of various devices on a home bus viewed from the display control device. A display control device, further comprising control means for displaying on a control display screen.
2. The display control device according to claim 1, wherein
Devices that are directly connected to the display control device are placed in the second stage without distinction between the parent and child, and devices that are directly connected to the devices in the same stage are also placed in the third and subsequent stages. 2. The display control device according to claim 1, wherein an image arranged at the next stage is displayed without distinction.
3. The display control according to claim 2, wherein the control unit displays an image in which the display control device is disposed at the top, left, or right of a display screen. apparatus.
4. A bus system in which various devices including a display control device are connected by a serial bus, wherein each display control device is different from the display control device and a display control device directly connected to the display control device. A display control device, further comprising control means for grouping devices and displaying an image indicating a connection status of various devices on a home bus on a display screen on which the display control device performs display control.
5. The method according to claim 1, wherein the serial bus is IEEE (t)
he Institute of Electrica
l and Electronic Engineer
s inc. 5. The display control device according to claim 1, wherein a 1394 serial bus is used.
6. The display control device according to claim 1, wherein the display control device is a television receiver that receives and reproduces radio waves related to digital television broadcasting.
7. The display control device according to claim 1, wherein the control unit displays a connection status of various devices using a device type name.
8. The control means includes an AV / C (Audio)
Visual / Control) Digital
Un in Interface Command Set
The display control device according to claim 7, wherein the type name of the device is acquired using an it info status command or the like.
9. The display control device according to claim 1, wherein the control unit displays a portion indicating the display control device in a different color from a portion indicating another device.
10. The display device according to claim 1, wherein the control unit displays a group including the display control device in a color different from other groups on a display screen on which the display control device performs display control. 5. The display control device according to 4.
11. The display control device according to claim 1, wherein the control unit divides a display area and displays an image indicating the connection status together with the currently displayed image.
12. The display control apparatus according to claim 1, wherein the control unit superimposes and displays the image indicating the connection status and the currently displayed image in a watermark state. .
13. The display control device according to claim 1, wherein the control unit switches the image indicating the connection status from the currently displayed image and displays the image.
14. In a bus system in which various devices including a display control device are connected by a serial bus, the display control device displays an image showing a connection status of various devices on a home bus as viewed from the display control device. A display control method, further comprising a control step of displaying the image on a display screen that is performing control.
15. The control step includes arranging the display control device in a first stage, arranging a device directly connected to the display control device in a second stage without discriminating between a parent and a child. 15. The display control method according to claim 14, further comprising displaying an image in which devices directly connected to the device at the next stage are arranged at the next stage without distinction between a parent and a child.
16. The display control according to claim 15, wherein in the control step, an image in which the display control device is arranged at the top, left, or right of a display screen is displayed. Method.
17. A bus system in which various devices including a display control device are connected by a serial bus, wherein, for each of the display control devices, other than the display control device and a display control device directly connected to the display control device. A display control method, further comprising a control step of grouping devices and displaying an image indicating a connection status of various devices on a home bus on a display screen on which the display control device performs display control.
18. The serial bus as an IEEE standard
(The Institute of Electric
cal and Electronic Engineering
ers inc. 18. The display control method according to claim 14, wherein a 1394 serial bus is used.
19. The display control method according to claim 14, wherein the display control device is a television receiver that receives and reproduces radio waves related to digital television broadcasting.
20. The display control method according to claim 14, wherein the control step displays the connection status of various devices using a device type name.
21. The method according to claim 19, wherein the control step includes an AV / C (Audi)
o Visual / Control) Digital
U in Interface Command Set
21. The type name of the device is obtained using a nit info status command or the like.
Display control method described.
22. The display control method according to claim 14, wherein in the control step, a portion indicating the display control device is displayed in a color different from a portion indicating another device.
23. The control step, wherein a group including the display control device is displayed in a color different from other groups on a display screen on which the display control device performs display control. 18. The display control method according to item 17.
24. The display control method according to claim 14, wherein the control step divides a display area and displays an image indicating the connection status together with the currently displayed image.
25. The control method according to claim 14, wherein the control step superimposes and displays the image indicating the connection status and the currently displayed image in a watermark state.
7. The display control method according to 7.
26. The display control method according to claim 14, wherein in the control step, an image indicating the connection status is switched from an image currently being displayed and displayed.
27. In a bus system in which various devices including a display control device are connected by a serial bus, the display control device displays an image showing a connection status of various devices on a home bus as viewed from the display control device. A bus system comprising a control means for displaying on a display screen performing control.
28. The control means arranges the display control device in a first stage, arranges devices directly connected to the display control device in a second stage without discriminating between a parent and a child, 28. The bus system according to claim 27, further comprising displaying an image in which devices directly connected to the device at the next stage are arranged at the next stage without distinction between a parent and a child.
29. The bus system according to claim 28, wherein said control means displays an image in which said display control device is disposed at the top, left, or right of a display screen. .
30. In a bus system in which various devices including a display control device are connected by a serial bus, each of the display control devices other than the display control device and a display control device directly connected to the display control device. A bus system comprising a control unit for grouping devices and displaying an image indicating a connection status of various devices on a home bus on a display screen on which the display control device performs display control.
31. The serial bus as an IEEE standard
(The Institute of Electric
cal and Electronic Engineering
ers inc. 31. The bus system according to claim 27, wherein a 1394 serial bus is used.
32. The bus system according to claim 27, wherein the display control device is a television receiver that receives and reproduces radio waves related to digital television broadcasting.
33. The bus system according to claim 27, wherein said control means displays the connection status of various devices using a device type name.
34. The control means comprises an AV / C (Audi)
o Visual / Control) Digital
U in Interface Command Set
34. The type name of the device is acquired using a nit info status command or the like.
Bus system as described.
35. The bus system according to claim 27, wherein the control means displays a portion indicating the display control device in a color different from a portion indicating another device.
36. The display control device according to claim 36, wherein the control unit displays a group including the display control device in a color different from other groups on a display screen on which the display control device performs display control. 30. The bus system according to 30, wherein:
37. The bus system according to claim 27, wherein the control unit divides a display area and displays an image indicating the connection status together with the currently displayed image.
38. The image processing apparatus according to claim 27, wherein the control unit superimposes and displays the image indicating the connection status and the currently displayed image in a watermark state.
0 bus system.
39. The bus system according to claim 27, wherein said control means switches an image indicating the connection status from an image currently being displayed and displays the image.
40. A storage medium for storing a program to be executed by the display control device on a bus system in which various devices including a display control device are connected by a serial bus, wherein the program includes the display control device. A storage medium including a control routine for displaying an image indicating a connection status of various devices on a home bus as viewed from a device on a display screen on which display control is being performed by the display control device.
41. The control routine includes arranging the display control device in a first stage, arranging a device directly connected to the display control device in a second stage without discriminating a parent and a child, 41. The storage medium according to claim 40, wherein a device directly connected to the device in the corresponding stage is similarly displayed in the next stage without distinction between a parent and a child.
42. The control routine according to claim 4, wherein the display control device displays an image in which the display control device is disposed at the top, left, or right of a display screen.
The storage medium according to claim 1.
43. A storage medium for storing a program to be executed by a display control device on a bus system in which various devices including a display control device are connected by a serial bus, wherein the program includes the display control device. The display control device and the devices other than the display control device directly connected to the display control device are grouped for each device, and the display control device performs an image display indicating the connection status of various devices on the home bus. A storage medium including a control routine for displaying on a display screen being performed.
44. The serial bus as an IEEE standard
(The Institute of Electric
cal and Electronic Engineering
ers inc. 44. The storage medium according to claim 40, wherein a 1394 serial bus is used.
45. The storage medium according to claim 40, wherein the display control device is a television receiver that receives and reproduces radio waves related to digital television broadcasting.
46. The storage medium according to claim 40, wherein the control routine displays the connection status of various devices using a device type name.
47. The control routine comprises an AV / C (Au)
dio Visual / Control) Digit
5. The type name of the device is acquired using a unit info status command in al Interface CommandSet.
6. The storage medium according to 6.
48. The storage medium according to claim 40, wherein the control routine causes a portion indicating the display control device to be displayed in a different color from a portion indicating another device.
49. The control routine according to claim 49, wherein a group including the display control device is displayed in a color different from other groups on a display screen on which the display control device performs display control. 43. The storage medium according to 43.
50. The control routine according to claim 40, wherein the display routine divides a display area and displays an image indicating the connection status together with the currently displayed image.
3. The storage medium according to 3.
51. The storage medium according to claim 40, wherein the control routine superimposes and displays the image indicating the connection status and the currently displayed image in a watermark state.
52. The storage medium according to claim 40, wherein the control routine causes the image indicating the connection status to be switched and displayed from the image currently being displayed.
JP11044856A 1999-02-23 1999-02-23 Display controller, display control method, bus system and storage medium Pending JP2000244836A (en)

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WO2002032057A1 (en) * 2000-10-10 2002-04-18 Sony Corporation Information processing apparatus
JP2003114835A (en) * 2001-08-21 2003-04-18 Robert Bosch Gmbh Electronic system having multiple nodes connected to network by optical waveguide, and method and computer program for diagnosing the electronic system
WO2008013132A1 (en) 2006-07-28 2008-01-31 Sharp Kabushiki Kaisha Display apparatus
JP2008035190A (en) * 2006-07-28 2008-02-14 Sharp Corp Display device
JP2008034976A (en) * 2006-07-26 2008-02-14 Sharp Corp Display device and system
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JP2008067267A (en) * 2006-09-11 2008-03-21 Sharp Corp Display device
US7787423B2 (en) 2003-09-10 2010-08-31 Panasonic Corporation Device and program product for the same
EP2268006A3 (en) * 2009-06-17 2011-08-10 Samsung Electronics Co., Ltd. Display apparatus and method for displaying
JP6235668B1 (en) * 2016-09-13 2017-11-22 シャープ株式会社 Display device, display device control method, and program
JP2018046565A (en) * 2017-10-26 2018-03-22 シャープ株式会社 Display device, control method of the same, program, and television receiver

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002032057A1 (en) * 2000-10-10 2002-04-18 Sony Corporation Information processing apparatus
JP2003114835A (en) * 2001-08-21 2003-04-18 Robert Bosch Gmbh Electronic system having multiple nodes connected to network by optical waveguide, and method and computer program for diagnosing the electronic system
US7787423B2 (en) 2003-09-10 2010-08-31 Panasonic Corporation Device and program product for the same
JP2008034976A (en) * 2006-07-26 2008-02-14 Sharp Corp Display device and system
WO2008013132A1 (en) 2006-07-28 2008-01-31 Sharp Kabushiki Kaisha Display apparatus
JP2008035190A (en) * 2006-07-28 2008-02-14 Sharp Corp Display device
JP2008035192A (en) * 2006-07-28 2008-02-14 Sharp Corp Display apparatus
JP2008067267A (en) * 2006-09-11 2008-03-21 Sharp Corp Display device
EP2268006A3 (en) * 2009-06-17 2011-08-10 Samsung Electronics Co., Ltd. Display apparatus and method for displaying
JP6235668B1 (en) * 2016-09-13 2017-11-22 シャープ株式会社 Display device, display device control method, and program
WO2018051624A1 (en) * 2016-09-13 2018-03-22 シャープ株式会社 Display device, display device control method and program
JP2018046565A (en) * 2017-10-26 2018-03-22 シャープ株式会社 Display device, control method of the same, program, and television receiver

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