Electronic device

• US 5,343,144 A
• Filed: 02/21/1992
• Issued: 08/30/1994
• Est. Priority Date: 02/28/1991
• Status: Expired due to Term

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Kobayashi, Yuji
• Primary Examiner(s): Karlsen, Ernest F.
• Application Number:
  US07/838,874
• Time in Patent Office: 921 Days
• Field of Search: 324/158 R, 324/23.1, 371/15.1, 371/22.5, 364/571.01, 364/571.03, 364/571.07, 364/579, 364/480-483
• US Class Current: 324/750.3
• CPC Class Codes: G01R 31/2825 in household appliances or professional audio/video equipment testing LAN's H04L43/50; testing TV systems H04N17/00; testing loudspeakers H04R29/00

Abstract

An electronic device has a main-wiring board with a control circuit and a plurality of sub-wiring boards connected to the main-wiring board. Each sub-wiring board has at least one circuit block having an operational setting, and a memory circuit in which operational setting data for the circuit block are stored. The control circuit on the main-wiring board controls the operation settings of the circuits on the respective wiring boards on the basis of the operation setting data stored in the memory circuit.

Claims

1. An electronic device comprising:

a plurality of sub-wiring boards each having mounted thereon at least one circuit block with an operational setting and a memory circuit for storing operational setting data for said at least one circuit block;

a temperature detection element included in each of said sub-wiring boards for measuring a temperature of said each sub-wiring board; and

a main-wiring board respectively connected to said sub-wiring boards, said main-wiring board having a control circuit for controlling said operational setting of said at least one circuit block mounted on each of said plurality of sub-wiring boards on the basis of said operational setting data stored in said memory circuit on the respective sub-wiring board, and said control circuit corrects said operational setting data on the basis of the temperature measured by said temperature detection element.

2. The electronic device according to claim 1, wherein a first transmission form of data which are transmitted from said memory circuit mounted on said each sub-wiring board to said control circuit mounted on main-wiring board and a second transmission form of data which are transmitted from said control circuit mounted on said main-wiring board to said circuits mounted on said each sub-wiring board are a serial data transmission form.

3. The electronic device according to claim 1, wherein said memory circuit mounted on said each sub-wiring board further stores data for respectively indicating product information.

4. The electronic device according to claim 1, wherein said memory circuit mounted on said each sub-wiring board further stores data for self-diagnosing, said control circuit mounted on said main-wiring board detecting the abnormality of said circuits mounted on said each sub-wiring board on the basis of said data for self-diagnosing.

5. The electronic device according to claim 1, wherein said memory circuit mounted on said each sub-wiring board further stores identification data for said sub-wiring board, said control circuit mounted on said main-wiring board judging whether or not said each sub-wiring board houses at a correct position on the basis of said identification data.

6. The electronic device according to claim 1, wherein:

said control circuit mounted on said main-wiring board inputs or outputs transmission data through input/output circuits among predetermined external devices; and

said memory stores said input/output data in addition to said adjusting data for said sub-wiring board.