Display panel drive apparatus for driving a display panel

• US 7,425,934 B2
• Filed: 04/13/2004
• Issued: 09/16/2008
• Est. Priority Date: 04/14/2003
• Status: Expired due to Fees

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Pioneer Corporation
• Inventors: Matsumoto, Yukihiro, Masumura, Yuuki
• Primary Examiner(s): Lefkowitz; Sumati
• Assistant Examiner(s): SITTA, GRANT
• Application Number:
  US10/822,823
• Publication Number:
  US 20040201546A1
• Time in Patent Office: 1,617 Days
• Field of Search: 345/60, 345/37, 345/3.1, 714/2, 714/24
• US Class Current: 345/60
• CPC Class Codes: G09G 2330/027 Arrangements or methods related to powering off a display
• CPC Class Codes: G09G 2330/04 Display protection
• CPC Class Codes: G09G 3/2092 Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto suitable for both CRT and flat panel G09G5/003; specific for a CRT G09G1/165
• CPC Class Codes: G09G 3/2965 using inductors for energy recovery

Abstract

A display-panel-drive apparatus having a drive unit that drives the display panel and a control unit that outputs control signals for controlling said drive unit to said drive unit, the display-panel-drive apparatus is provided with: a drive board of the drive unit; a control board of the control unit; a transmission line that transmits the control signals from the control board to the drive board by way of a removable connector; a detection device that detects when said connector is disconnected; and a control device that controls said drive unit when the detection device detects that the connector is disconnected; and wherein the detection device detects that said connector is disconnected by detecting when the connection terminals of the connector are disconnected.

Claims

1. A display-panel-drive apparatus having a drive unit that drives the display panel and a control unit that outputs control signals for controlling said drive unit, the display-panel-drive apparatus comprising:

a drive board of said drive unit;

a control board of said control unit;

a transmission line that transmits said control signals from said control board to said drive board by way of a removable connector;

a detection device that detects when said connector is disconnected; and

a control device that controls said drive unit when said detection device detects that said connector is disconnected; and

wherein

said detection device detects that said connector is disconnected by detecting when connection terminals which are included in said connector are disconnected;

wherein said control device stops operation of said drive unit when said detection device detects that said connector is disconnected,

wherein said control signals are signals that cause said drive unit to output scan pulses given to successive display lines for setting some of the discharge cells located on said display panel as light-emitting cells and some of non-emitting cells,

wherein said drive unit includes first switch (S21) and second switch (S22) which are connected to a power supply (B2), and scan pulses are outputted from a connection point between the first switch (S21) and the second switch (S22),

wherein when said detection device detects that said connector is disconnected, the first switch (S21) is set to ON state and the second switch (S22) is set to OFF state.

2. A display-panel-drive comprising:

a drive process of driving the display panel;

a control process of outputting control signals for controlling said drive process;

a transmission process of transmitting said control signals from a control board to a drive board by way of the removable connector; and

a detection process of detecting when said connector is disconnected,

wherein said control process stops said drive process when said detection process detects that said connector is disconnected;

said detection process detects that said connector is disconnected by detecting when the connection terminals which are included in said connector are disconnected; and

said control signals are signals that cause said drive process to output scan pulses given to successive display lines for setting some of the discharge cells located on said display panel as light-emitting cells and some as non-emitting cells'"'"'

wherein a part of said drive process executed by a first switch (S21) and a second switch (S22) which are connected to a power supply (B2), and scan pulses are outputted from a connection point between the first switch (S21) and the second switch (S22),

wherein when said detection process detects that said connector is disconnected, the first switch (S21) is set to ON state and the second switch (S22) is set to OFF state.