Display and video producing apparatus, and displaying method and video producing method

• US 6,906,756 B1
• Filed: 10/27/2000
• Issued: 06/14/2005
• Est. Priority Date: 10/29/1999
• Status: Expired due to Term

• Current Assignee: Optis Wireless Technology, LLC (Brevet Capital)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Miyauchi, Motoya, Kubota, Kosuke, Machida, Yutaka, Kayada, Tadashi, Yukitake, Takeshi
• Primary Examiner(s): LEE, MICHAEL
• Application Number:
  US09/869,279
• Time in Patent Office: 1,691 Days
• Field of Search: 348/554, 348/555, 348/576, 348/577, 348/580, 348/511, 348/714, 348/718, 348/719, 348/715, 345/590, 345/574, 345/534, 345/501, 345/530, 345/531, 345/568
• US Class Current: 348/554
• CPC Class Codes: G09G 2340/0407 Resolution change, inclusive of the use of different resolutions for different screen areas
• CPC Class Codes: G09G 2340/0464 Positioning
• CPC Class Codes: G09G 2360/18 Use of a frame buffer in a display terminal, inclusive of the display panel
• CPC Class Codes: G09G 5/003 Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto specific for a CRT G09G1/165; for a flat panel G09G3/2092
• CPC Class Codes: G09G 5/005 Adapting incoming signals to the display format of the display terminal
• CPC Class Codes: G09G 5/006 Details of the interface to the display terminal specific for a display terminal using a CRT G09G1/167; using a flat panel G09G3/2096; circuits for interfacing with colour displays G09G5/04
• CPC Class Codes: G09G 5/14 Display of multiple viewports

Abstract

A vertical region designation circuit 141 outputs a vertical region designation signal to a vertical driver 103 on the basis of vertical display position information, a vertical synchronization signal and a horizontal synchronization signal. A horizontal region designation circuit 142 outputs a horizontal region designation signal to a horizontal driver 102 on the basis of horizontal display position information, a pixel synchronization signal, a vertical synchronization signal and a horizontal synchronization signal. The horizontal driver 102 outputs an input picture signal to a picture display surface 101 from a signal line at a horizontal coordinate corresponding to the number of times of pixel synchronization signals that is counted from an input horizontal synchronization signal as a starting point during a period when a horizontal region designation signal is effective. A vertical driver 103 stores the number of times of synchronization of a horizontal synchronization signal during a period when a vertical region designation signal is effective, and the vertical driver 103 selects a signal line at a vertical coordinate corresponding to the number of times of synchronization. The picture display surface 101 displays a picture signal output from the horizontal driver 102 at a position designated by a horizontal coordinate corresponding to the signal line where the picture signal was output and a vertical coordinate corresponding to the signal line selected by the vertical driver 103.

Claims

1. An electronic apparatus comprising a picture generation apparatus and a picture display apparatus, said picture generation apparatus comprising:

a synchronization signal generator that generates a picture synchronization signal;

a picture generator that generates picture data in a horizontal resolution of m′ and

a vertical resolution of n′

in synch with the picture synchronization signal;

a picture generation controller that specifies an m′

×

n′

region in a memory, having a horizontal resolution of M (M>

m′

) and a vertical resolution of N (N>

n′

), and stores the picture data in said region in synch with the picture synchronization signal; and

a picture signal generator that reads data from the memory and generates a picture signal in the vertical resolution of N and horizontal resolution of M in synch with the picture synchronization signal, and

said picture display apparatus comprising;

a picture display controller that specifies a displaying region on a picture display surface, having a horizontal resolution of m (M>

m) and a vertical resolution of n (N>

n); and

a picture display that cuts from the picture signal a picture corresponding to the displaying region specified by the picture display controller and displays the picture on the picture display surface, wherein

said electronic apparatus is further provided with a controller that controls the picture generation controller in the picture generation apparatus and the picture display controller in the picture display apparatus, and that independently controls a position of the region in the memory for storing the picture data and a position of the displaying region on the picture display surface of the picture display apparatus.

2. The electronic apparatus according to claim 1, wherein, when the resolution of the picture data generated in the picture generator (m′

×

n′

) and the resolution of the picture display (m×

n) are equal, the picture generation controller and the picture display controller are controlled such that the position of the region in the memory for storing the picture data and the position of the displaying region on the picture display surface of the picture display apparatus match.

3. The electronic apparatus according to claim 1, wherein, when the resolution of the picture data generated in the picture generator (m′

×

n′

) is lower than the resolution of the picture display (m×

n), the picture generation controller and the picture display controller are controlled such that the picture data is displayed in a center of the picture display apparatus.

4. The electronic apparatus according to claim 1, wherein, when the resolution of the picture data generated in the picture generator (m′

×

n′

) is greater than the resolution of the picture display (m×

n), the picture generation controller and the picture display controller are controlled such that a middle portion of the picture data is displayed on the picture display surface.

5. A telephone apparatus comprising a picture generation apparatus and a picture display apparatus, said picture generation apparatus comprising:

a synchronization signal generator that generates a picture synchronization signal;

a picture generator that generates picture data in a horizontal resolution of m′ and

a vertical resolution of n′

in synch with the picture synchronization signal;

a picture generation controller that specifies an m′

×

n′

region in a memory, having a horizontal resolution of M (M>

m′

) and a vertical resolution of N (N>

n′

), and stores the picture data in said region in synch with the picture synchronization signal; and

a picture signal generator that reads data from the memory and generates a picture signal in the vertical resolution of N and horizontal resolution of M in synch with the picture synchronization signal, and

said picture display apparatus comprising;

a picture display controller that specifies a displaying region on a picture display surface, having a horizontal resolution of m (M>

m) and a vertical resolution of n (N>

n); and

a picture display that cuts from the picture signal a picture corresponding to the displaying region specified by the picture display controller and displays the picture on the picture display surface, wherein

said electronic apparatus is further provided with a controller that controls the picture generation controller in the picture generation apparatus and the picture display controller in the picture display apparatus, and that independently controls a position of the region in the memory for storing the picture data and a position of the displaying region on the picture display surface of the picture display apparatus.