Data input apparatus

• US 4,887,082 A
• Filed: 11/16/1987
• Issued: 12/12/1989
• Est. Priority Date: 03/15/1984
• Status: Expired due to Term

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Yamada, Yasuaki
• Primary Examiner(s): Moore, David K.
• Assistant Examiner(s): FATAHI YAR, MAHMOUD
• Application Number:
  US07/120,787
• Time in Patent Office: 757 Days
• Field of Search: 340/365 E, 340/365 R, 340/365 S, 340/365 VL, 178/17 C, 178/18, 400/368, 400/299, 235/145 R, 364/706, 364/709, 341/22, 341/23, 341/24, 341/25, 341/26
• US Class Current: 341/26
• CPC Class Codes: B41J 25/02 Key actions for specified purposes

Abstract

A data input apparatus comprising a plurality of input keys. A determiner determines whether the time required for executing the function of a pressed key is long or short. In response to the results of determination of the determiner, a first timekeeping device produces a first predetermined time signal, and a second timekeeping device produces a second time signal shorter in duration than the predetermined time signal. A CPU receives data representative of the pressed key at the end of the first or second time signal. In response to receipt of the data by the CPU, a third timekeeping device produces a third time signal shorter in duration than the second time signal. At the end of this third time signal, the CPU receives the data for as long as the key continues to be pressed. The third timekeeping device may include two different timekeeping elements which produce different time signals in order to be used in conjunction with the first and second timekeeping devices, respectively. Alternatively, a computer may perform the same function as mentioned above, using software techniques.

Claims

1. A key input apparatus comprising:

key input means including a plurality of keys;

key data producing means for producing key data each associated with one of said keys, each said key datum being produced by said key data producing means in response to the operation of said associated key, each said key datum being capable of performing a repeated operation;

identification means for identifying an operated key in said key input means; and

control means, in response to the identifying of an operated key by said identification means, for varying the repeat waiting time for starting the repeated operataion.

2. A key input apparatus according to claim 1, wherein said key input means comprises a matrix.

3. A key input apparatus comprising:

a plurality of keys each capable of performing a corresponding repeat operation of the corresponding key by continuous depression thereof;

determining means for determining whether the time required for the repeat operation of said apparatus corresponding to a depressed key is long or short; and

control means for varying the repeat waiting time for starting the repeat operation according to the length of an operation time period corresponding to the depressed key.

4. A key input apparatus according to claim 3, wherein said keys are arranged as a maatrix.

5. A key input apparatus according to claim 3, wherein said control means includes plurality of one-shot multivibrators.

6. A key input apparatus comprising:

key input means comprising a plurality of keys, adapted to perform either a quick repeat operation or a slow repeat operation;

identification means for identifying whether an operated key is adapted to perform a quick repeat operation or a slow repeat operation; and

control means for varying the repeat waiting time for starting the repeat operation of an operated key in response to the identifying by said identification means.

7. A key input apparatus according to claim 6, wherein said keys are arranged in a matrix.

8. A key input apparatus according o claim 6, wherein said plurality of keys include a space key and a carriage return key, wherein said space key performs a quick repeat operation and said carriage return key performs a slow repeat operation.

9. A key input apparatus according to claim 6, further comprising:

means for generating a signal for executing repeat operation of said apparatus for a predetermined period upon start of the repeat operation after the period of time set by said control means.

10. A key input apparatus comprising:

key input means comprising a plurality of keys associated with a short time repeat operation and a plurality of keys associated with a long time repeat operation, a repeat operation being performed by the continuous depression of at least one of said plurality of keys;

identification means for identifying whether a depressed key is associated with the repeat operation and for identifying whether said depressed key is a long time repeat operation key or a short time repeat operation key; and

control means for varying a repeat waiting time for starting the repeat operation associated with said depressed key, in response to the identifying by said identifying means.

11. A key input apparatus according to claim 10, wherein said key input means has a matrix configuration.

12. A key input apparatus according to claim 10, wherein said plurality of keys associated with the short time repeat operation comprise a space key, wherein said plurality of keys associated with the long time repeat operation comprise a carriage return key.

13. A key input apparatus comprising:

key input means including a plurality of keys for respectively executing a plurality of functions, wherein at least one of said plurality of keys executes a repeat operation;

function identification means for identifying the function of an operated key;

repeat identification means for identifying whether the "function identified by the function identification means of the" operated key is a repeat operation; and

control means for varying a repeat waiting time for starting the repeat operation according to the identifying of the function of an operated key by said function identification means when said repeat identification means identifies that the operated key executes the repeat operation.

14. A key input apparatus according to claim 13, wherein said key input means has a matrix configuration.

15. A key input apparatus according to claim 13, wherein said key input means inputs a key code signal into said apparatus and said function identification means identifies the function of an operated key by referring to the input key code signal.

16. A key input apparatus according to claim 13, wherein said key input means inputs a key code signal into said apparatus and said repeat identification means identifies whether the operated key executes the repeat operation by referring to the input key code signal.